倍韌/BESTPERNE® ZF55B
熱塑性彈性體Thermoplastic Elastomer
產(chǎn)品說明Product description | |||||||
一款高性能吸震材料,具有特別舒適的手感。 high performance shock absorption material,with a special and comfortable feel. | |||||||
關(guān)鍵特性Key characteristic | |||||||
1.表面微亮,手感細(xì)膩柔軟爽滑. A little bright on the surface,exquisite,smooth and soft touch feeling. 2.阻尼效果優(yōu)異. Damping effect is good. | |||||||
功能Function | |||||||
產(chǎn)品應(yīng)用 Main application | 手機(jī)保護(hù)套Phone protective cover | ||||||
密封墊片Sealing gasket | 電子器件粘膠配件Electronic plastic accessories | ||||||
加工方法Processing method | 注塑、擠出成型Injection and extrusion molding | ||||||
環(huán)保認(rèn)證 Environmental certification | ROHS | REACH | EN71-3 | ||||
PAHS | ASTM-F963 | Phthalate | |||||
顏色Color | 本色Natural | ||||||
氣味Smell | 少許樹脂味A little resin smell | ||||||
外型Appearance | 圓球形小顆粒Cylindrical particle,about 3mm×1.5mm | ||||||
儲(chǔ)藏期Storage period | 常溫下通風(fēng)干燥,24個(gè)月Ventilated dry at normal temperature,about 24 months | ||||||
包裝方式Packaging method | 25公斤/袋 25kg/bag | ||||||
物理性能Physical properties | 結(jié)果Result | 單位Unit | 方法Method | 成型條件Molding condition | |||
比重Specific gravity | 1.02±0.02 | g/cm3 | ASTM D792 | 干燥溫度Drying temp 60 ℃ | |||
硬度Hardness | 55±5 | shoreA | ASTM D2240 | 干燥時(shí)間Drying time 2h | |||
拉伸強(qiáng)度Tensile strength | >4 | Mpa | ASTM D412 | 射嘴溫度Nozzle temp 200℃ | |||
斷裂延伸Elongation at break | >300 | % | ASTM D412 | 螺筒一段溫度Screw 1 temp 190℃ | |||
撕裂強(qiáng)度Tearing strength | >22 | Kn/m | ASTM D624 | 螺筒二段溫度Screw 2 temp 180℃ | |||
熔融指數(shù)Melt index | >3 | g/10min | ASTM D1238 | 螺筒三段溫度Screw 3 temp 170℃ | |||
壓縮變形(高溫)Compression set (high temperature) | 103 | % | ISO 815 | 70℃/24h,壓縮量為25% | |||
壓縮變形(常溫)Compression set (normal temperature) | 57 | % | ISO 815 | 23℃/72h,壓縮量為25% | |||
脆化溫度Embrittlement temperature | -30 | ℃ | ISO 812 |
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塑料增韌的方法
塑料增韌的主要方法是以彈性體(TPE)為分散相,塑料為基體共混增韌,能大幅提高塑料的沖擊強(qiáng)度。彈性體增韌塑料主要要滿足三個(gè)條件:
1.彈性體與樹脂形成兩相結(jié)構(gòu),但也要有適度的相容性以保證兩相之間有良好的粘接力;
2.彈性體添加量要達(dá)到一定的份數(shù);
3.彈性體的分子鏈柔性要較低,也就是說需要較低的Tg,尤其是低溫增韌時(shí)彈性體的Tg越低,低溫韌性越好。
由于純彈性體是非極性材料,而塑料(如PA、PBT)是極性材料,二者不相容,純彈性體不能有效增韌塑料,故而需要通過接枝改性使POE形成POE接枝物,接枝的官能團(tuán)能夠與基材端基反應(yīng)從而提供一定的相容性,使兩相具有很好的粘接性,從而能夠使基材樹脂大幅提高沖擊強(qiáng)度。如CMG5805-L(POE-g-MAH)的MAH可與尼龍的端胺基反應(yīng),可以有效增韌PA,當(dāng)5805-L添加一定份數(shù)后,形成了超韌材料.