GPPS/лучшее качество по самой низкой

General-purpose grade polystyrene is a thermoplastic resin, which is colorless, odorless, tasteless and glossy, transparent bead or granular solid. Density 1.04 ~ 1.09, transparency 88% ~ 92%, refractive index 1.59 ~ 1.60. Under the action of stress, birefringence occurs, that is, the so-called stress-optical effect. The melting temperature of the product is 150 ~ 180℃, the thermal decomposition temperature is 300℃, the thermal deformation temperature is 70 ~ 100℃, and the long-term use temperature is 60 ~ 80℃. At 5 ~ 6℃ lower than the hot deformation temperature, after annealing treatment, the stress can be eliminated and the hot deformation temperature can be increased. The heat resistance of general polystyrene can be improved if a little α-methyl styrene is added in the production process.

hydrocarbons, aliphatic ketones and esters, but can only swell in acetone. Can be resistant to some mineral oil, organic acid, alkali, salt, low alcohol and its aqueous solution. Low water absorption, it can still maintain its mechanical properties and dimensional stability in wet environment. Its optical properties are second only to

acrylic resins. Excellent electrical performance, volume resistivity and surface resistivity are very high, and is not affected by temperature, humidity changes, also is not affected by corona discharge. The radiation resistance is also very good. Its main disadvantage is brittle, low impact strength, poor heat resistance, can not resist boiling water, can only be used at a lower temperature and a lower load. Light resistance is poor and flammable. Black smoke when burning, and have a special smell.

 

Packaging Details: 25kg/bag

Port: Tianjin

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Company Profile

Shijiazhuang Ceteng import and Export Trading Co., Ltd.

We offer specialized professional knowledge and services, stabilized quality production, and faster delivery control so that we can make every our product sent to customer with perfect quality, which is better than the others.