Guangdong Chuang Sanfeng Insulation Material Co

First product name, polybutylene terephthalate, English name (abbreviation, or it is the condensation polymer of terephthalic acid and butylene glycol, which is produced by polycondensation by transesterification or direct esterification. Future development The trend is to produce direct esterification method, which is also called thermoplastic polyester in the polyester series. It is a milky white semi-finished polyester made from the polycondensation of diol and terephthalic acid or terephthalate, and is made through a mixing process. Transparent to opaque, crystalline thermoplastic polyester resin. Together with it, collectively referred to as thermoplastic polyester, or saturated polyester. It is milky white, translucent to opaque, crystalline thermoplastic polyester with high heat resistance, toughness, fatigue resistance, and self-lubricating , low friction coefficient, weather resistance, low water absorption, only maintains various physical properties (including electrical properties and electrical insulation, but large volume resistance, dielectric loss, hot water, alkalis, acids, oils) in a humid environment similar, but is easily corroded by halogenated hydrocarbons, has poor hydrolysis resistance, and can crystallize quickly at low temperatures. Its good formability is low notch impact strength, and most of the molding shrinkage is modified by glass fiber reinforcement or inorganic filling. Its tensile strength, bending The strength can be more than doubled, and the heat distortion temperature is also greatly increased to enable long-term operation at ℃. After glass fiber reinforcement, the longitudinal and transverse shrinkage rates of the product are inconsistent, which can easily cause the product to warp. The chain is composed of a rigid benzene ring and a repeating unit. It is composed of saturated linear molecules connected by flexible fatty alcohols. The high geometric regularity and rigid part of the molecules give the polymer high mechanical strength, outstanding resistance to chemical reagents, heat resistance and excellent electrical properties. There are no side chains in the molecules. The structure is symmetrical and meets the requirements of close packing, so that this polymer has a high degree of crystalline form and high melting point. The molecular structure determines its good comprehensive properties. It is the latest to be industrialized and the fastest to develop among the same engineering plastics. Variety, the reason why it has become a rising star of engineering plastics is that it has excellent comprehensive properties, as well as good molding processability and performance/price comparison. Therefore, although the plastic was not industrially produced until the 1990s, it quickly sold well in the market and is now It is one of the five fastest growing engineering plastics. Two characteristics
⒈Excellent mechanical properties, high mechanical strength, good fatigue resistance and dimensional stability. Creep is also small, and these properties are rare under high temperature conditions. There are changes.
2. The energy consumed in production is the lowest among engineering plastics, which is of great significance in the face of global energy shortage.
2. Excellent heat aging resistance, enhanced The final temperature index reaches ~℃. In addition, the long-term outdoor aging resistance is also very good.
⒋ Good solvent resistance and no stress cracking.
⒌ Easy to flame retardant, up to grade and good performance, so it is easy to develop reactive or additive flame retardant grades. Flame retardant products are widely used in the electronic and electrical industry.
⒍Easily decomposed when exposed to water, so use caution in high temperature and high humidity environments.
⒎Excellent electrical properties, high volume resistivity and dielectric strength, excellent arc resistance, minimal hygroscopicity, and stable electrical properties in humid and high-temperature environments. It is ideal for manufacturing electronic and electrical parts. Ideal material.
⒏Easy to molding and secondary processing, easy to use ordinary equipment for injection molding or extrusion. Due to the fast crystallization speed, good fluidity and lower mold temperature requirements than other engineering materials, it only takes a few seconds to process thin-walled parts and only a few seconds for large parts.
The Chinese name is polybutyl terephthalate, referred to as saturated polyester, which is a highly crystalline thermoplastic plastic.
Advantages, stable mechanical properties, tensile strength and tensile modulus similar to nylon, small friction coefficient and self-lubricating properties
, low water absorption, excellent electrical properties, good dimensional stability, chemical resistance , Excellent oil resistance.
Santu
, electronic and electrical fusible breakers, electromagnetic switches, flyback transformers, home appliance handles, connectors, casings, etc.
, car door handles, bumpers, distributor covers , fenders, wire shields, rim covers, etc.
, industrial parts fans, keyboards, fishing reels, parts, lampshades, etc.
The four-purpose fields are mainly used in automobiles, electronic appliances, industrial machinery and polymer alloys. The blending industry is used as distributors in automobiles, body parts, igniter coil bobbins, insulating covers, exhaust system parts, Motorcycle igniters, electronic and electrical industries such as TV deflection coils, picture tube and potentiometer brackets, audio output transformer skeletons, adapter skeletons, switch connectors, electric fans, refrigerators, washing machine motor end covers, shaft sleeve outer There are also transportation machinery parts, sewing machine and textile machinery parts, watch casings, lens barrels, iron covers, mercury lamp shades, baking oven parts, power tool parts, shielding sleeves, etc.
Five grid plate thickness*width*length* /*
Bar*
Color: milky white, black
Origin: Germany, Switzerland