描述

工厂价格Pmma颗粒原料聚甲基丙烯酸甲酯Pmma颗粒Pmma树脂价格

PMMA塑料材料

优良的透明度和优异的耐老化性

PMMA具有重量轻、成本低、易于成型的优点

Pmma颗粒原料聚甲基丙烯酸甲酯颗粒Pmma树脂价格

产品详细信息

工厂价格pmma颗粒原料聚甲基丙烯酸甲酯pmma颗粒pmma树脂价格

pmma模塑焦点

1）成品重量，必须在管容量的70%以下成型，超过更大机器的需要，因此，高硬度、高粘度，油压马达通常需要增加一级驱动力矩就足够了

（2）物料在进料管中流动的阻力小，压力损失小。孔可以是jg A，电镀0.03-0.04 mm，对于管组，通过增加硬度和平滑度可以获得较小的阻力

（3）其流动性不如abs，abs必须增加喷射压力和速度变化才能形成，容易出现凹陷和内部气泡，所有这些都难以降低温度，压力难以传递

（1）熔化速度可降低约40%至50%，为了增加熔化热，压力在70~90 kg/cm2之间是合适的，因此可以调节材料温度

（2）当出现收缩或真空气泡时，当其他条件无法解决时，背压，以解决5 kg/cm2~20 kg/cm2之间的问题，如果背压过高，则会过热，驾驶困难

（3）如果它在加热管中停留太长时间，气体太多，有时由于气体阻力，螺钉很难驱动，可以通过连续喷射和注射来消除气体

（4）如果冷却时间缩短，肉厚的成品不会变形，可以在温水中浸泡慢慢冷却，表皮和中心之间的温差不要太大，这样可以防止收缩真空气泡的发生

（5）当产品中存在残余应力时，暴露在溶剂中，成品的强度将降低，以消除内应力，热模塑可产生更高的材料温度，降低顶出压力，如果使用压缩模塑，则几乎不存在内应力

（6）如果成品已经大量生产，可以进行火处理，以免因内应力过高而报废，以缓解外表面的张力和内应力。（7） 丙烯酸二次材料回收，用于清洁最好的台地材料，设定在240°C左右。（8）如果在低温下成型，管后部的温度较高，螺杆不会产生尖锐的异常声音

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Factory Price Pmma Pellets Raw Materials Polymethyl Methacrylate PMMA Granules Pmma Resin Price

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PMMA Plastic Material
Excellent transparency and outstanding aging resistance
PMMA has the advantages of light weight, low cost and easy molding.

Factory Price Pmma Pellets Raw Materials Polymethyl Methacrylate PMMA Granules Pmma Resin Price

Product Details

Factory price pmma pellets raw materials polymethyl methacrylate PMMA Granules pmma resin price

PMMA molding focus

1) finished product weight, Must be formed below 70% of the tube capacity, In excess of the need for a larger machine, Therefore, high hardness, high viscosity, oil pressure motor usually need to increase the first-class driving torque is enough.

(2) The resistance of the material flowing in the feed pipe is small, Less pressure loss. And the holes can be jg A, Electroplating 0.03-0.04 mm, for tube group A smaller resistance | force can be obtained by increasing hardness and smoothness.

(3) its fluidity is not as good as that of the abs where the ejection pressure and velocity changes must be increased to form, prone to depression and internal bubbles, All are difficult to reduce the temperature pressure difficult to convey.

(1) The melting rate can be reduced by about 40% to 50%, To increase the melting heat, The pressure between 70~90 kg/cm2 is appropriate, Thus, the material temperature can be adjusted.

(2) When a shrinkage or vacuum bubble occurs, When other conditions can not be resolved, Back pressure, To solve the problem between 5 kg/cm2~20 kg/cm2, if the back pressure is too high, it will overheat and drive difficult.

(3) if it stays in a heated tube for too long, Too much gas, Sometimes the screw is hard to drive because of gas resistance, The gas can be eliminated by continuous ejection and injection.

(4) If the meat-thick finished product will not deform if the cooling is shortened, Can be soaked in warm water slowly cooling, The temperature difference between the epidermis and the center is not too large, This can prevent the occurrence of shrinkage vacuum bubble.

(5) When residual stress is present in the product, Exposure to solvents, The strength of the finished product will be reduced in order to eliminate internal stress can be produced by thermal mold, Higher material temperature, The ejection pressure is reduced, If compression molding is used, the internal stress almost does not exist.

(6) If the finished product has been produced in large quantities, fire treatment may be carried out in order not to be scrapped because the internal stress is too high, so as to ease the tension on the outer surface and the internal stress. (7) Acrylic secondary material recovery, for cleaning the best tableland material, set about 240°C. (8) If formed at low temperature, the temperature of the back section of the tube is higher, and the screw will not produce sharp abnormal sound.

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