They are frequently used to replace metal for applications in which light weighting, improved impact strength, elastic modulus, and material strength are required.

injection molding pbt recycle material pbt compound material.

PBT materials Polybutylene terephthalate (PBT) is a thermoplastic polyester and one of the top five engineering plastics. PBT has excellent overall performance, is one of the toughest engineering plastics, and has high dimensional stability, good chemical resistance, excellent electrical insulation, good mechanical properties and elasticity, low water absorption, etc. PBT filling Long glass fiber compounds PBT (polybutylene terephthalate) is a polyester-based plastic, while glass fiber is a reinforcing material that is usually added to plastics in fiber form to enhance their mechanical properties. When PBT is combined with glass fibers, the following effects occur: 1. Enhanced strength and stiffness: glass fiber has excellent strength and stiffness, and adding it to PBT can significantly increase the mechanical properties of the plastic. This makes the material of PBT with glass fiber more strong and rigid when it is subjected to force or stress, and less likely to deform or break. 2. Improve heat resistance: glass fiber has a high melting point and good heat resistance performance. When glass fiber is added to PBT, it can improve the heat resistance of PBT, so that it can keep better performance at higher temperature and prevent softening or melting. 3. Improve corrosion resistance: Glass fiber has excellent corrosion resistance, and adding it to PBT can improve its resistance to chemicals, solvents and other corrosive media. This makes PBT with glass fiber have longer service life in some special environments. 4. Improve insulation performance: PBT itself has good insulation performance, and the addition of glass fiber further improves the insulation performance of PBT material. This makes the PBT with glass fiber more suitable for electrical and electronic applications, which can effectively isolate the current and reduce leakage and electromagnetic interference. All in all, PBT with glass fiber can enhance the mechanical properties, heat resistance, corrosion resistance and insulation properties of plastics, making them more widely used in various applications. However, the performance of the material may vary depending on the specific glass fiber content and the addition process. Fiber specification Grade Fiber specification Characteristics Application Length Color Package General grade 20%-60% High toughness, Low warpage Electronic appliances, mechanical parts, etc. About 12mm,  or customzied Natural color,  or customized 25kg/bag The difference between LGF & SGF Short glass fiber particles: Size size is about 3-4mm, length to width ratio 50-250 Long glass fiber particles: Size is about 10-12mm, aspect ratio >400 In addition, the distribution of glass fiber in the two kinds of particles is also different. Compared with SGF, the rigidity, strength and modulus of LGF have been improved, especially the notched impact performance has got a qualitative leap. Application Datasheet for reference About us Xiamen LFT composite plastic Co., Ltd. is a brand-name company that focuses on LFT&LFRT. Long Glass Fiber Series (LGF) & Long Carbon Fiber Series (LCF). The company's thermoplastic LFT can be used for LFT-G injection molding and extrusion, and can also be used for LFT-D molding. It can be produced according to customer requirements: 5~25mm length. The company's long-fiber continuous infiltration reinforced thermoplastics have passed ISO9001&16949 system certification, and the products have obtained lots of national trademarks and patents.

What is PBT? Polybutylene terephthalate (PBT) is a thermoplastic polyester and one of the five engineering plastics. PBT has excellent comprehensive performance, is one of the toughest engineering plastics, and has high dimensional stability, good chemical corrosion resistance, excellent electrical insulation, good mechanical properties and elasticity, low water absorption and so on. What is PBT-LGF? As one of the engineering plastics, most of the PBT needs to be modified to meet the corresponding requirements in the practical application field. PBT modification is mainly divided into: flame retardant PBT, glass fiber reinforced flame retardant PBT, glass fiber reinforced PBT. The modified PBT material is mainly used in the field of lighting (such as LED lamp shell), electronic and electrical fields (such as relay shell and spinner, socket, optical fiber connector, etc.) and automotive manufacturing (such as junction box, ignition system parts, external door handles, etc.). The difference between Long glass fiber & Short glass fiber Long glass fibers range in length from 6 to 25mm, while staple fibers are usually less than 6mm, or even between 0.2 and 0.6mm. Long glass fiber has more excellent performance in machanical properties. It is more suitable for large products and structural parts. It has 1-3 times higher (toughness) than short fiber, and the tensile strength (strength and rigidity) is increased by 0.5-1 times. What is the application of PBT-LGF? In the lighting industry, most of the lamp shell is used for enhanced flame retardant PBT material, whose performance requirements are easy to process and form, good mechanical properties, high and low temperature cycle resistance, flame retardant level UL94 3.0mm or 1.5mm V0, high temperature resistance, yellowing resistance effect is good. Its appearance requires transparent color or porcelain white shading, smooth surface, no floating fiber. In the field of automobile manufacturing, the modified PBT is mainly used in such as automobile wiper bracket, automobile headlight lighting ring, automobile transmission gear box, windshield pillar, motor shell and so on. TDS for reference only Injection molding About us Xiamen LFT composite plastic Co., Ltd. is a brand-name company that focuses on LFT&LFRT. Long Glass Fiber Series (LGF) & Long Carbon fiber Series (LCF). The company's thermoplastic LFT can be used for LFT-G injection molding and extrusion, and can also be used for LFT-D molding. It can be produced according to customer requirements: 5~25mm in length. The conpany's long-fiber continuous infiltration reinforced thermoplastics have passed ISO9001&16949 system certification, and the products have obtained lots of national trademarks and patents. Contact us

Product grade: General grade Fiber specification: 20%-60% Product feature: High toughness, Low warpage Product application: Electronic appliances, Machinery parts etc.

Product grade: General grade Fiber specification: 20%-60% Product feature: High toughness, Low warpage Product application: Electronic appliances, Machinery parts etc.

PBT materials Polybutylene terephathalate (PBT) is a crystalline thermoplastic engineering plastic made by polymerizing dimethyl terephthalate (DMT) and 1,4 butanediol (1,4-Butanediol). Due to the growth of the -CH2- chain of PBT resin, the molecular chain is easy to flex, so the glass transfer temperature is lower than that of PET, and the crystallization speed increases. PBT can also be called thermoplastic polyester plastics, applicable to different processing industries, generally more or less will add additives, or blended with other plastics, with different proportions of additives, can be manufactured with different specifications of the product. Because PBT has heat resistance, weather resistance, chemical resistance, good electrical properties, low water absorption, good gloss, widely used in electronic and electrical appliances, automotive parts, machinery, household goods, etc.. PBT's downstream applications include the automotive, electronics/electrical appliance, and machinery industries. Datasheet for reference Application LGF & SGF Advantages of Long glass fiber reinforced materials Glass fiber reinforced plastic is based on the original pure plastic, adding glass fibers and other additives, so as to improve the scope of use of the material. Generally speaking, most of the glass fiber reinforced materials are used in the structural parts of the products, which is a kind of structural engineering materials, such as: PP, ABS, PA66, PA6, PC, POM, PPO, PET, PBT, PPS and so on. Advantages After glass fiber reinforcement, glass fiber is a high temperature resistant material, therefore, the heat-resistant temperature of reinforced plastics is much higher than before without glass fiber, especially nylon plastics. After glass fiber reinforcement, due to the addition of glass fiber, it restricts the mutual movement of the polymer chain of the plastic, therefore, the shrinkage of the reinforced plastic decreases a lot and the rigidity is greatly improved. After glass fiber reinforced, the reinforced plastic will not stress cracking, at the same time, the impact resistance of the plastic improves a lot. After the glass fiber reinforcement, the glass fiber is a high strength material, which also greatly improves the strength of the plastic, such as: tensile strength, compression strength, bending strength, improve a lot. After glass fiber reinforcement, due to the addition of glass fiber and other additives, the combustion performance of the reinforced plastics decreases a lot, most of the materials can not be ignited, it is a kind of flame-retardant material. Warehouse & Lab Customers & Us Catalog

PBT materials Polybutylene terephthalate (PBT) is a thermoplastic polyester and one of the top five engineering plastics. PBT has excellent overall performance, is one of the toughest engineering plastics, and has high dimensional stability, good chemical resistance, excellent electrical insulation, good mechanical properties and elasticity, low water absorption, etc. PBT filling Long glass fiber compounds PBT (polybutylene terephthalate) is a polyester-based plastic, while glass fiber is a reinforcing material that is usually added to plastics in fiber form to enhance their mechanical properties. When PBT is combined with glass fibers, the following effects occur: 1. Enhanced strength and stiffness: glass fiber has excellent strength and stiffness, and adding it to PBT can significantly increase the mechanical properties of the plastic. This makes the material of PBT with glass fiber more strong and rigid when it is subjected to force or stress, and less likely to deform or break. 2. Improve heat resistance: glass fiber has a high melting point and good heat resistance performance. When glass fiber is added to PBT, it can improve the heat resistance of PBT, so that it can keep better performance at higher temperature and prevent softening or melting. 3. Improve corrosion resistance: Glass fiber has excellent corrosion resistance, and adding it to PBT can improve its resistance to chemicals, solvents and other corrosive media. This makes PBT with glass fiber have longer service life in some special environments. 4. Improve insulation performance: PBT itself has good insulation performance, and the addition of glass fiber further improves the insulation performance of PBT material. This makes the PBT with glass fiber more suitable for electrical and electronic applications, which can effectively isolate the current and reduce leakage and electromagnetic interference. All in all, PBT with glass fiber can enhance the mechanical properties, heat resistance, corrosion resistance and insulation properties of plastics, making them more widely used in various applications. However, the performance of the material may vary depending on the specific glass fiber content and the addition process. Fiber specification Grade Fiber specification Characteristics Application Length Color Package General grade 20%-60% High toughness, Low warpage Electronic appliances, mechanical parts, etc. About 12mm,  or customzied Natural color,  or customized 25kg/bag The difference between LGF & SGF Short glass fiber particles: Size size is about 3-4mm, length to width ratio 50-250 Long glass fiber particles: Size is about 10-12mm, aspect ratio >400 In addition, the distribution of glass fiber in the two kinds of particles is also different. Compared with SGF, the rigidity, strength and modulus of LGF have been improved, especially the notched impact performance has got a qualitative leap. Application Datasheet for reference About us Xiamen LFT composite plastic Co., Ltd. is a brand-name company that focuses on LFT&LFRT. Long Glass Fiber Series (LGF) & Long Carbon Fiber Series (LCF). The company's thermoplastic LFT can be used for LFT-G injection molding and extrusion, and can also be used for LFT-D molding. It can be produced according to customer requirements: 5~25mm length. The company's long-fiber continuous infiltration reinforced thermoplastics have passed ISO9001&16949 system certification, and the products have obtained lots of national trademarks and patents.

PBT plastic Polybutylene terephthalate, (PBT), belongs to the polyester series, is made of 1.4-pbt butylene glycol (1.4-Butylene glycol) and terephthalic acid (PTA) or terephthalic acid ester (DMT) polycondensation, the molecular formula is (C8H8-C4H6-C3H3N)x, and through the blending process made of milky white translucent to opaque Crystalline thermoplastic polyester resin. PBT is one of the toughest engineering thermoplastics, it is a semi-crystalline material with very good chemical stability, mechanical strength, electrical insulation properties and thermal stability. Specific gravity: 1.31g/cm. Melting point: 225~275℃ Glass transfer temperature (Tg): 22-43℃ Rockwell hardness (R scale): 118 Water absorption: 0.34% Molding shrinkage: 1.7~2.3% PBT-LGF reinforced plastic Excellent mechanical properties, high mechanical strength, fatigue resistance and good dimensional stability, creep is also small. These properties also rarely change under high temperature conditions. The production of PBT consumes less energy. Excellent heat resistance, with a UL temperature index of 120 to 140°C after reinforcement, and excellent long-term outdoor aging. Good solvent resistance and no stress cracking. PBT can be easily flame-retarded up to UL94V-0 level, and it is easy to develop reactive or additive flame retardant grades because of its good affinity with flame retardants. Flame-retardant products are widely used in the electrical and electronic industry. Select PBT is easy to decompose when it meets water, so it should be used with caution in high temperature and high humidity environment. Borrowing excellent electrical properties, high volume resistivity and dielectric strength, excellent arc resistance, minimal moisture absorption, and stable electrical properties even in humid and high temperature environments, making it an ideal material for electronic and electrical parts. It is easy to be molded and secondary processed, and can be injection molded or extruded with common equipment. Due to the fast crystallization speed and good fluidity, the mold temperature is lower than other engineering materials, and it takes only a few seconds to process thin-walled parts, and only 40-60s for large parts. Datasheet for reference Application 1、Electronic appliances: fuseless wire breakers, electromagnetic switches, Chie transformers, appliance handles, connectors, shells, etc. 2、Automobile: door handle, bumper, distributor cover, fender, wire guard shell, wheel cover, etc. 3、industrial parts: OA fan, keyboard, fishing reel, parts, lampshade, etc. Product processing Injection molding Details Number Color Length Sample MOQ Package Port of Loading Delivery time PBT-NA-LGF30 Natural color (can be customized) 12mm (can be customized) Available 1 ton 25kg/bag Xiamen Port 7-15 days after shipment Lab & Factory Frequently asked questions Q. Does long glass fiber and long carbon fiber injection have special requirements for injection molding machines and molds? A. There are certainly requirements. Especially from the product design structure, as well as the injetion molding machine screw nozzle and mold structure injection molding process must consider the requirements of long fiber. Q. After long glass fiber reinforced, glass fiber can enter the surface of the plastic product during injection molding process, so that surface of the product become rough and floating fiber. How to make the surface of the material smoothly? A. During injection molding process need to ensure that the plastic particles are well plasticized and dispersed, also ensure that the dry of plastic particles have no moisture removal, mold temperature adjestment to the appropriate temperature, mold surface is polished in place.

PBT introduction Scientific name: polybutylene terephthalate, PBT, belongs to the polyester series, is made of 1.4-pbt butylene glycol and terephthalic acid (PTA) or terephthalic acid ester (DMT) polycondensation, and through the mixing process made of milky white translucent to opaque, crystalline thermoplastic polyester resin. Together with PET, they are referred to as thermoplastic polyesters, or saturated polyesters. Processes PBT crystallization speed is fast, the most suitable processing method is injection molding, other methods are extrusion, blow molding, coating and various secondary processing molding. Long glass fiber compounds Long glass fiber reinforced composites can solve your problems when other methods of reinforced plastics do not provide the performance you need or if you want to replace metal with plastic. Long glass fiber reinforced composites can cost-effectively reduce the cost of goods and effectively improve the mechanical properties of engineering polymers, and increase the durability by forming long fibers to form a long-fiber-reinforced internal skeleton network. TDS for your reference Application Other application filed you can contact us, we will provide professional technical advice. Other materials you may wonder                          PA12-LGF                             HDPE-LGF                                 TPU-LGF                                                                                 Details Number Color Length Sample MOQ Package Port of Loading Delivery time PBT-NA-LGF30 Original color (can be customized) 12mm about (can be customized) Available 25KG 25KG/BAG Xiamen Port 7-15 days after shipment Frequently asked questions Q. How to choose the reinforcement method and length of the material when using long fiber reinforced thermoplstic material? A. The selection of materials depend on the requirements of the products. It is necessary to assess how much the content is enhanced and how much length is more appropriate, which are depending on the performance requirements of the products. Q. In addition to being suitable for injection molding, long fiber products can be extruded or other processes? A. LFT long glass fiber and long carbon fiber are mainly used for injection molding, and also can also extrusion plate profile tube and mold edges a variety of thermoplastic molding methods. Q. The cost of long fiber products is higher. Does it has a high recycling value? A. The thermoplastic LFT long fiber material can be recycled and reused very well.

What is PBT? Polybutylene terephthalate (PBT) is a thermoplastic polyester and one of the five engineering plastics. PBT has excellent comprehensive performance, is one of the toughest engineering plastics, and has high dimensional stability, good chemical corrosion resistance, excellent electrical insulation, good mechanical properties and elasticity, low water absorption and so on. What is PBT-LGF? As one of the engineering plastics, most of the PBT needs to be modified to meet the corresponding requirements in the practical application field. PBT modification is mainly divided into: flame retardant PBT, glass fiber reinforced flame retardant PBT, glass fiber reinforced PBT. The modified PBT material is mainly used in the field of lighting (such as LED lamp shell), electronic and electrical fields (such as relay shell and spinner, socket, optical fiber connector, etc.) and automotive manufacturing (such as junction box, ignition system parts, external door handles, etc.). The difference between Long glass fiber & Short glass fiber Long glass fibers range in length from 6 to 25mm, while staple fibers are usually less than 6mm, or even between 0.2 and 0.6mm. Long glass fiber has more excellent performance in machanical properties. It is more suitable for large products and structural parts. It has 1-3 times higher (toughness) than short fiber, and the tensile strength (strength and rigidity) is increased by 0.5-1 times. What is the application of PBT-LGF? In the lighting industry, most of the lamp shell is used for enhanced flame retardant PBT material, whose performance requirements are easy to process and form, good mechanical properties, high and low temperature cycle resistance, flame retardant level UL94 3.0mm or 1.5mm V0, high temperature resistance, yellowing resistance effect is good. Its appearance requires transparent color or porcelain white shading, smooth surface, no floating fiber. In the field of automobile manufacturing, the modified PBT is mainly used in such as automobile wiper bracket, automobile headlight lighting ring, automobile transmission gear box, windshield pillar, motor shell and so on. TDS for reference only Injection molding About us Xiamen LFT composite plastic Co., Ltd. is a brand-name company that focuses on LFT&LFRT. Long Glass Fiber Series (LGF) & Long Carbon fiber Series (LCF). The company's thermoplastic LFT can be used for LFT-G injection molding and extrusion, and can also be used for LFT-D molding. It can be produced according to customer requirements: 5~25mm in length. The conpany's long-fiber continuous infiltration reinforced thermoplastics have passed ISO9001&16949 system certification, and the products have obtained lots of national trademarks and patents. Come and contact us

PBT-LGF Polybutanediol terephthalate (PBT) has excellent comprehensive properties, such as high crystallinity, rapid prototyping, weather resistance, low friction coefficient, high thermal deformation temperature, good electrical properties, excellent mechanical properties, fatigue resistance, can be ultrasonic welding. However, its notched impact strength is low, forming shrinkage rate is large, hydrolysis resistance is poor, easy to be eroded by halogenated hydrocarbons, after glass fiber reinforcement, because of the product longitudinal and horizontal shrinkage is inconsistent easy to warping products. With its excellent comprehensive performance, PBT is widely used in electronic and electrical appliances, automobile industry, machinery, instruments and household appliances and other fields. Common problem & Solvement Glass fiber reinforced PBT material warps easily Reasons: Warping is the result of uneven shrinkage of the material. The warping of the product can be caused by the orientation and crystallization of the components in the material, the improper technological conditions used in the injection molding, the wrong shape and position of the gate in the mold design, and the uneven thickness of the wall in the product design. The warping of PBT/GF composites is mainly due to the fact that the orientation of the glass fiber in the flow direction restricts the shrinkage of the resin, and the induced crystallization of PBT around the glass fiber strengthens this effect, making the longitudinal (flow direction) shrinkage of the product less than the transverse (perpendicular to the flow direction). This uneven shrinkage leads to the warping of PBT/GF composites. Solution: 1. Add minerals and use the shape symmetry of mineral fillers to reduce the anisotropy caused by the glass fiber orientation; 2. Add amorphous materials to reduce the crystallinity of PBT and reduce the uneven shrinkage caused by crystallization, such AS ASA or AS, but they have poor compatibility with PBT, so appropriate compatibilizers need to be added; 3. Adjust injection molding process, such as increasing mold temperature and increasing injection cycle appropriately. Glass fiber reinforced PBT surface floating fiber problem Reasons: The causes of floating fiber are more complex, in short, there are mainly the following aspects 1. The compatibility of PBT and glass fiber is very poor, resulting in the two can not effectively bond together; 2. The viscosity of PBT and glass fiber is very different, resulting in a tendency of separation between the two in the flow process. When the separation effect is greater than the adhesive force, the separation will occur, and the glass fiber will float to the outer layer and leak out; 3. The existence of shear force will not only lead to local viscosity differences, but also destroy the interface layer melt viscosity on the glass fiber surface, the smaller the interface layer is damaged, the smaller the bonding force on the glass fiber. When the viscosity is low to a certain degree, the glass fiber will get rid of the PBT resin matrix and gradually accumulate to the surface and expose. 4. Influence of mold temperature. Due to the low temperature of the mold surface, the glass fiber with light weight and fast condensation is frozen instantaneously. If it is not fully surrounded by melt in time, it will be exposed and form "floating fiber". Solution: 1) Add compatibilizers, dispersants and lubricants to improve the floating fiber problem. For example, the use of special surface treatment of glass fiber, or adding compatibilizers (such as: SOG, a well-flowing PBT modified compatibilizer) through the "bridge" effect, increase the adhesion of PBT and glass fiber. 2) Optimize the molding process to improve the floating fiber problem. Higher injection molding temperature and mold temperature, larger injection molding pressure and back pressure, faster injection molding speed, lower screw speed, can improve the floating fiber problem to a certain extent. The glass fiber reinforced PBT injection molding process is easy to produce more mold scale Reasons: The formation of mold scale is caused by the high content of small molecules or the poor thermal stability of materials. Compared with other materials, PBT is easy to generate mold scale due to its oligomer and small molecule residue rate usually in the range of 1%-3%. And after the introduction of glass fiber, more obvious. This will lead to the continuous processing process, the need to clean the mold regularly, resulting in low production efficiency. Solution: 1) Reduce the amount of small molecule additives (such as lubricant, coupling agent, etc.), try to choose polymer additives; 2) Improve the thermal stability of PBT and reduce the small molecular products produced by thermal degradation during processing; PBT Application Widely used in machinery, electronic and electrical, automotive industry and household appliances and other fields. Rel...