PPS PR37(粉)美国雪佛龙菲利普聚苯硫醚塑料
PPS PR37(粉)美国雪佛龙菲利普聚苯硫醚塑料
PPS特性:
1.一般性能
pps为一种外观白色,高结晶度,硬而脆的聚合物,纯pps的相对密度为1.3,但改性后会增大。pps有吸水率极小,一般只有0.3%左右。pps阻燃性好,其氧指数高达44%以上;与其他塑料相比,它在塑料中有属于高阻燃材料(纯pps的氧指数为47%,PSF为30%,PA66为29%,MPPO为25%)
PPS美国雪佛龙菲利普 R-4-200BL; 玻璃纤维增强材料, 40% 高强度黑色,UL94,阻燃VO,5VA
PPS美国雪佛龙菲利普 R-4-200NA, 玻璃纤维增强材料, 40% 高强度自然色UL94阻燃V0,5VA
PPS美国雪佛龙菲利普 R-4-230BL, 玻璃纤维增强材料, 40% 可加工性,良好UL94阻燃V0,5VA
PPS美国雪佛龙菲利普 R-4-230NA, 玻璃纤维增强材料, 40% 可加工性,良好UL94阻燃V0,5VA
PPS美国菲利浦R-4XT, 玻璃纤维增强材料, 40%抗撞击性,良好延展性UL94阻燃V0,5VA
PPS美国雪佛龙菲利普 R-402XT玻璃纤维增强材料, 40%抗撞击性,良好UL94阻燃V0,5VA
PPS美国雪佛龙菲利普 R-7玻璃 矿物黑色UL94阻燃V0,5VA
PPS美国雪佛龙菲利普 R-7-02玻璃 矿物黑色UL94阻燃V0,5VA
2.机械性能
纯pps的机械性能不高,尤其冲击强度比较低。以玻璃纤维增强后会大幅度提高冲击强度,由27J/m增大到76J/m,增大3 培;拉伸强度由6Mpa增大到137Mpa,增大1培。 pps的刚性很高,在工程塑料中少见。纯pps的弯曲模量可达3.8Gpa,无机填充改性后可达到12.6Gpa,增大5培之多。而以刚性煮称的ppo仅为2.55Gpa,pc仅为2.1Gpa。 pps在负荷下的耐蠕变性好,硬度高;耐磨性高,其1000转时的磨耗量仅为0.04g,填充F4及二硫化钼后还会进一步得到改善;pps还具有一定自润性。pps的机械性能对温度的敏感性能小。
3.热学性能
pps具有优异的热性能,短期可耐260度,并可在200~240度下长期使用;其耐热性与PI相当,仅次于F4塑料,这在热固性塑料中也不多见。
Huayun Plastic Company 4. The Electrical Properties of PPS are very outstanding, compared with other engineering plastics, its dielectric Changshu and dielectric loss angle tangent value is low, and in a relatively low frequency, temperature and humidity range, the resistance of PPS to arc is good, it's as good as thermosetting polymer. PPS is often used in electrical insulation materials, its dosage can account for about 30% .
5. Environmental Properties one of the characteristics of PPS is good chemical corrosion resistance, the chemical stability of PPS is second only to F4; PPS is stable to most acids, esters, ketones, aldehydes, phenols and aliphatic hydrocarbons, aromatic hydrocarbons, oxygen-substituted hydrocarbons, non-oxygen-substituted biphenyls and oxidizing acids, oxidant, Aqua Regia, peroxide and sodium hypoxylate, etc. . PPS has good radiation resistance.