东莞TPV塑料厂,供应TPV,供应TPV弹性体 TPV材料
倍韧/BESTPERNE® TSV70N
热塑性弹性体Thermoplastic Elastomer
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产品说明Product description |
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·TSV70N是一款新型的高分子复合材料，韧性和强度平衡，耐磨，抗污，丝滑细腻，超耐黄变，耐化学性，导热性符合穿戴产品的要求.TSV70N is a new kind of polymer material which has excellent wear resistance，stain resistance ，yellowing resistance，chemical resistance ，smooth and exquisite touch，high thermal conductivity，toughness and strength of the balance.It is very suitable for wearable products. |
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关键特性Key characteristic |
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1.舒适的触感，柔韧细腻、爽滑Comfortable feel，flexible ，exquisite and smooth touch. 2.粘接强度高，可粘接材质ABS、PC、TPU Very high bonding strength，adhesive materials：ABS、PC、TPU. 3.实用性，耐脏、耐油、耐汗、耐变色It is very practical，for excellent stain resistance，oil resistance，sweat resistance and discoloration resistance. 4.具有超强的耐黄变性能Excellent yellowing resistance performance. 5.绝对可靠的安全性，无毒、过敏性Reliable security ，non-toxic，non-allergic. |
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功能Function |
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产品应用 Main application |
苹果手表带Apple watchbands |
高档手机护套High-end phone protective covers |
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医疗器材Medical device |
智能手环Smart Bracelet |
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加工方法Processing method |
注塑成型Injection molding |
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环保认证 Environmental certification |
ROHS |
REACH |
EN71-3 |
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PAHS |
ASTM-F963 |
Phthalate |
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颜色Color |
本色Natural |
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气味Smell |
少许树脂味A little resin smell |
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外型Appearance |
圆球形小颗粒Cylindrical particle，about 3mm×1.5mm |
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储藏期Storage period |
常温下通风干燥，12个月Ventilated dry at normal temperature，about 12 months |
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包装方式Packaging method |
25公斤/袋 25kg/bag |
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物理性能Physical properties |
结果Result |
单位Unit |
方法Method |
成型条件Molding condition |
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比重Specific gravity |
1.08±0.02 |
g/cm3 |
ASTM D792 |
干燥温度Drying temp 90℃ |
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硬度Hardness |
70±5 |
shoreA |
ASTM D2240 |
干燥时间Drying time 3Hours |
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拉伸强度Tensile strength |
>7 |
Mpa |
ASTM D412 |
射嘴温度Nozzle temp 190℃ |
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断裂延伸Elongation at break |
<750 |
% |
ASTM D412 |
螺筒一段温度Screw 1 temp 200℃ |
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撕裂强度Tearing strength |
>35 |
Kn/m |
ASTM D624 |
螺筒二段温度Screw 2 temp 190℃ |
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熔融指数Melt index |
>1 |
g/10min |
ASTM D1238 |
螺筒三段温度Screw 3 temp 180℃ |
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压力
注塑过程是压力包括塑化压力（背压）和注射压力。螺杆后退时，其顶部熔料所受到的压力即为背压，通过溢流阀来调节。增加背压会提高熔体温度，减低塑化速度，使熔体温度均匀，色料混合均匀，并排出熔体气体，但会延长成型周期。TPU的背压通常在0。3～4MPa。
注射压力是螺杆顶部对TPU所施的压力，它的作用是克服TPU从料筒流向型腔的流动阻力，给熔料充模的速率，并对熔料压实。TPU流动阻力和充模速率与熔料粘度密切相关，而熔料粘度又与TPU硬度和熔料温度直接相关，即熔料粘度不仅决定于温度和压力，还决定于TPU硬度和形变速率。剪切速率越高粘度越低；剪切速率不变，TPU硬度越高粘度越大。
在剪切速率不变的条件下，粘度随温度增加而下降，但在高剪切速率下，粘度受温度的影响不像低剪切速率那样大。TPU的注射压力一般为20~110MPa。保压压力大约为注射压力的一半，背压应在1。4MPa以下，以使TPU塑化均匀。
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