无标题文档
Welcome to visit Dongguan Zhongting Plastics Chemical Co., Ltd. official website!
A specialized supplier of plastic raw materials
Approved by ROHS, REACH, UL94 , FDA and other relevant certification!
CHINESE
ENGLISH
Contacts
PRODUSTS
Plastic materials
Contact us

Contacts

Contacts:Elena
Phone:+86-769-88029572
Skype:china.elena22
E-mail:china_elena@163.com
Address:No. 138, First Sutong Road, Dajingjiu Plastic Market, Changping Town, Dongguan City, Guangdong Province, China

PPA physical properties of materials


Terephthalamide, in hot and humid state, PPA tensile strength than nylon 6 20% higher than nylon 66; nylon PPA flexural modulus of the material is 20% greater hardness, resistant to long the tensile creep; and PPA resistance to gasoline, oil and coolant resistance ability is also stronger than PA; a high temperature nylon, this material can withstand continuous high temperature of 200 ℃, and also to maintain good dimensional stability . [2] Polyphthalamide (referred to as PPA) resins are phthalic acid or terephthalic acid as a raw material semi-aromatic polyamide. Both semi-crystalline state, the amorphous state have a glass transition temperature of 255 ° F or so. PPA amorphous state requirements mainly for barrier properties are needed; semi-crystalline PPA resin is mainly used for injection molding, but also for other melt processing. Below describes the latter - semi-crystalline PPA resin, unless otherwise noted. PPAS semi-crystalline melting point of about 590 ° F, in order to form an opaque rectangular slices of supply. Due to outstanding physical, thermal and electrical properties of PPA resin, it has a broad range of applications. These properties and excellent chemical resistance together to make PPA to become a candidate for the automotive industry many purposes. Trend better aerodynamic body design along with more high-performance motor, will raise the temperature of the engine compartment, the traditional thermoplastics seem endless apply. These new requirements make production of PPA to become one of the following components candidate materials: automotive headlight reflector, bearing, pulley, sensor housing, fuel line components and electrical components.
江苏快3 江苏快三 江苏快3 江苏快3 广西快3 江苏快3 广西快3 江苏快3 玖玖彩票 江苏快3