描述

塑料椅用回收Pp树脂

PP材料的优势

1。比重低，吸水率低

二,。成本低，模具性能好

三,。优异的耐水性和耐热性

四,。平衡的机械性能

五,。优异的电气性能

六,。耐候性和抗水解性

七,。符合UL 94 V-0易燃性标准

塑料椅用回收聚丙烯树脂

产品细节

塑料椅用回收聚丙烯树脂

聚丙烯的加工特性

聚丙烯是一种相对容易注射成型的材料，尽管它具有半结晶性质。从机械性能的角度来看，对高分子量没有任何实际需求，导致熔体粘度低（易于流动）。聚丙烯的假塑性在高剪切速率（快速填充速率）下增强了这种效应

注塑成型的熔体温度通常在200到250摄氏度之间。尽管在短时间内温度可能高达280摄氏度，甚至300摄氏度。对于阻燃等级，建议不超过220℃。模具填充率通常较高，以确保良好的表面光洁度和牢固的模具无焊缝和流动前沿。模具的充分通风对防止烧伤痕迹至关重要

是一家专业的塑料椅用再生pp树脂制造商，您可以从我们工厂以优惠的价格订购高品质的塑料椅用再生pp树脂

Recycled Pp Resin For Plastic Chair

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PP Material Advantages
1. Low Specific Gravity and low Water Absorption.
2. Low-cost and high Mold-ability.
3. Excellent Water Resistance and Heat Resistance.
4. Balanced Mechanical properties.
5. Excellent Electrical properties.
6. Weather Resistance and Hydrolysis Resistance.
7. Conforms to UL 94 V-0 Flammability Standards.

Recycled Pp Resin For Plastic Chair

Product Details

Recycled pp resin for plastic chair

PP Processing Characteristics

Polypropylene is a relatively easy materials to injection mould in spite of its semicrystalline nature. The absence of any real need for high molecular weight, from the mechanical properties view point, leads to low melt viscosity (easy flow). The pseudoplastic nature of polypropylene enhances this effect at high shear rates (fast filling rates).

Typically melt temperatures for injection moulding are between 200 and 250oC. Though they can be as high as 280, or even 300oC, for short periods of time. With Flame Retardant grades it recommended that 220oC is not exceeded. Mould filling rates are generally on the high side, to ensure good surface finish and strong mouldings free of weld lines and flow fronts. Adequate venting of the mould is essential to prevent burn marks.

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