描述

ABS塑料材料价格

建筑装饰行业

交通运输行业、广告行业

电气、化工机械、汽车行业

ABS塑料材料价格

产品详细信息

ABS塑料材料价格

再生材料的使用率不能超过30%，电镀级ABS不能使用再生材料

2。注塑机的选择可以使用华美达的标准注塑机（螺杆长径比为20:1，压缩比大于2，注塑压力大于1500bar）。如果使用母料或产品外观要求高材料，可以选择小直径的螺钉。夹紧力按4700-6200t/m2确定，具体需要根据塑料等级和产品要求确定

3。模具和浇口设计

模具温度可设置为60-65°C。流道直径为6-8mm。浇口宽度约3mm，厚度与产品相同，浇口长度应小于1mm。排气孔宽4-6mm，厚0.025-0.05mm

4。熔体温度可通过空气注入法准确测定。不同的等级有不同的熔化温度。建议设置如下：

冲击等级：220℃-260℃，优选250℃
电镀等级：250℃-275℃，优选270℃
耐热等级：240℃-280℃，优选265℃-270℃
阻燃等级：200℃-240℃，优选220℃-230℃
透明等级：230℃-260℃，优选245℃
玻璃纤维增强等级：230℃-270℃

对于表面要求高的产品，使用更高的熔体温度和模具温度

5。注射速度

耐火级使用慢速，耐热级使用快速。如果产品的表面要求相对较高，则应使用高速和多级注射速率控制

6。背压

一般来说，背压越低越好，常用背压为5bar，着色剂需要使用更高的背压才能使混色均匀

7。停留时间

在265°C的温度下，ABS在熔体筒中的停留时间不应超过5-6分钟。阻燃时间较短。如需停机，应先将设定温度降至100℃，然后用通用ABS清洗塑料熔体筒。清洁后的混合物应放入冷水中，以防止进一步分解。如果需要从其他塑料改为ABS，必须首先使用PS、PMMA或PE清洁熔融圆筒。一些ABS产品在刚脱模时没有问题，经过一段时间后才会变色。这可能是由于过热或塑料在熔化筒中停留时间过长造成的

8。产品后处理

一般情况下，ABS产品不需要后处理，只需对电镀产品进行烘焙（70-80℃，2-4小时）以钝化表面痕迹，需要电镀的产品不能使用脱模剂，产品取出后应立即包装

9。成型时需要特别注意的事项ABS有几个等级（尤其是阻燃等级）。塑化后，熔体与螺杆表面有很大的附着力，长时间后会分解。当出现上述情况时，需要拔出并擦拭螺钉的均质部分和压缩部分，并定期用PS等清洁螺钉。

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ABS Plastic Materials Price

Architecture Decoration Industry
Transportation Industry, Advertisement Industry
Electric & Electrical, Chemical Machinery,
Automobile Industry

ABS Plastic Materials Price

Product Details

ABS Plastic Materials price

1. Treatment of plastics

The water absorption rate of ABS is about 0.2%-0.8%. For general grade ABS, use an oven to bake at 80-85°C for 2-4 hours or use a drying hopper at 80°C for 1-2 hours before processing. For heat-resistant ABS containing PC components, the drying temperature should be appropriately increased to 100°C, and the specific drying time can be determined by air extrusion.

The use ratio of recycled materials cannot exceed 30%, and electroplating grade ABS cannot use recycled materials.

2. Selection of injection molding machine

Ramada’s standard injection molding machine can be used (the screw length to diameter ratio is 20:1, the compression ratio is greater than 2, and the injection pressure is greater than 1500bar). If you use masterbatch or the product appearance requires high material, you can choose a screw with a small diameter. The clamping force is determined according to 4700-6200t/m2, and the specific needs to be determined according to the plastic grade and product requirements.

3. Mold and gate design

The mold temperature can be set at 60-65°C. The diameter of the runner is 6-8mm. The gate width is about 3mm, the thickness is the same as the product, and the gate length should be less than 1mm. The exhaust hole is 4-6mm wide and 0.025-0.05mm thick.

4. The melt temperature can be accurately determined by the air injection method. Different grades have different melting temperatures. The recommended settings are as follows:

Impact level: 220℃-260℃, preferably 250℃
Electroplating level: 250℃-275℃, preferably 270℃
Heat resistance grade: 240℃-280℃, preferably 265℃-270℃
Flame retardant grade: 200℃-240℃, preferably 220℃-230℃
Transparent grade: 230℃-260℃, preferably 245℃
Glass fiber reinforced grade: 230℃-270℃

For products with high surface requirements, higher melt temperature and mold temperature are used.

5. Injection speed

Use slow speed for fire-resistant grade and fast speed for heat-resistant grade. If the surface requirements of the product are relatively high, high-speed and multi-stage injection rate control should be used.

6. Back pressure

In general, the lower the back pressure, the better, the commonly used back pressure is 5bar, and the coloring material needs to use a higher back pressure to make the color mixing uniform.

7. Detention time

At a temperature of 265°C, the residence time of ABS in the melt cylinder should not exceed 5-6 minutes. The flame-retardant time is shorter. If the machine needs to be shut down, the set temperature should be lowered to 100℃ first, and then the general-purpose ABS should be used to clean the plastic melt cylinder. The cleaned mixture should be put into cold water to prevent further decomposition. If you need to change from other plastics to ABS, you must first use PS, PMMA or PE to clean the melt cylinder. Some ABS products have no problems when they are just demolded, and they will only change color after a period of time. This may be caused by overheating or the plastic staying in the melt cylinder for too long.

8. Post-processing of products

Generally, ABS products do not need post-treatment, only electroplated products need to be baked (70-80℃, 2-4 hours) to passivate the surface traces, and the products that need electroplating cannot use mold release agents, and the products should be packaged immediately after being taken out. .

9. Matters needing special attention when forming

There are several grades of ABS (especially the flame retardant grade). After plasticization, the melt has a great adhesion to the screw surface, and it will decompose after a long time. When the above situation occurs, the homogenization section and compression of the screw need to be pulled out and wiped, and the screw should be cleaned regularly with PS, etc.

ContactnowformoredetailsaboutABS Plastic Materials price.

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