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PVDF管材阀门的制作加工流程

1、 挤塑 高分子量级的PVDF的熔融强度较好,可以用挤塑的方法成型加工成薄膜、片材、管、棒和电源绝缘套等,根据所使用的设备和加工的制品形状,温度控制在 210~290摄氏度之间,成型温度控制在180~240摄氏度之间,必须严格控制温度不能使温度长期超过其熔融温度。挤塑成型设备可选用一般螺杆挤塑 机。
1, extrusion of polymer melt strength of the magnitude of the PVDF is better, can use the method of extrusion molding into films, sheets, tubes, rods and electrical insulation sleeve, according to the equipment and processing by the use of the product shape, temperature control in 210~290 degrees Celsius, molding temperature between 180~240 degrees Celsius, must be strictly controlled not the temperature of the long-term temperature exceeds the melting temperature. Extrusion molding equipment can be used in general screw extruder.
2、注塑 低分子量级的PVDF熔融流动速度高,可以用喷射注塑的加工方法进行加工,一般采用通用注塑机,但料筒柱塞、喷嘴等必须采用耐腐蚀Ni基合金。
PVDF 2, the low molecular weight melt injection velocity is high, can be machined by using injection method, using general injection, but the barrel plunger and nozzle must be used for corrosion resistance of Ni alloy.

QQ截图20160810102318.png3、浇注 浇注成型是以二甲基乙酰胺为溶剂,将PVDF配置成固含量为20%溶液,流延在铝箔上,经过205 ~315摄氏度热熔后,用水急冷即可制成厚0.05~0.075mm的连续强韧膜。
3, casting molding with two DMF as solvent, PVDF will be configured to 20% solid solution, cast in aluminum foil, after 205 ~315 degrees Celsius hot melt after water quenching can be made of 0.05~0.075mm thick film continuous strengthening.
4、 模塑成型 一般先将PVDF粒料放在烘箱或预热炉中预热,预热温度215~235摄氏度,然后将预热好的物料加到事先预热好的180~195摄氏度的模具中,在 14MPa下施压、保压,保压时间视熔融和流动所需时间而定。厚壁制品必须保压冷却到90摄氏度以下才能脱模,以避免制品产生真空气泡或发生变形。
4, the first general PVDF molding pellets arranged in the preheating oven or preheating furnace, the preheating temperature of 215~235 degrees Celsius 180~195 degrees Celsius, mold and then preheated prior to material preheated, pressure 14MPa, holding pressure, holding time as required and melt flow and. Thick wall products must be kept to a minimum of 90 degrees Celsius in order to prevent the product from producing vacuum bubbles or deformation.
5、传递模塑成型 一般先采用挤出机塑化,然后将物料输送到储料缸中,通过柱塞泵将储料缸中的物料注入到模具里,并保压冷却。不管是模塑成型还是传递成型,主要用来生产体积较大、壁厚较厚的产品。
5, the transfer molding is generally the use of extruder plasticizing, and then the material is transported to the storage cylinder, through the plunger pump will be stored in the cylinder material into the mold, and keep pressure cooling. It is mainly used to produce products with larger volume and thicker wall thickness.
6、其它加工方法 加工PVDF还可采用浸渍、共挤出、符合等加工工艺。
6, other processing methods can also be used PVDF impregnation, CO extrusion, in line with the processing technology.
本文的精彩内容来自: CPVC管材管件阀门批发更多的详细内容请点击我们的官方网站:http://www.sdcpvc.com谢谢您的到来
The highlights of this article are: CPVC pipe fittings valve wholesale more details please click on our official website: http://www.sdcpvc.com thank you for coming

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