描述

聚甲基丙烯酸甲酯塑料注射

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塑料注射

产品详细信息

聚甲基丙烯酸甲酯塑料注射

加工技术

聚甲基丙烯酸甲酯可进行铸造、注射、挤出、热成型等工序

1。铸造成型，

铸造用于形成有机玻璃板材、棒材和其他型材，也就是说，型材是通过本体聚合形成的。铸造后的产品需要进行PMMA注塑后处理，后处理条件为60C保温2h，120C保温2h。注射成型

注射成型使用悬浮聚合制成的颗粒，并在普通柱塞或螺杆注射成型机上成型。表1是聚甲基丙烯酸甲酯注射成型的典型工艺条件

表1聚甲基丙烯酸甲酯注射成型工艺条件

工艺参数注射成型机柱塞注射成型机

桶芯后部温度180-200 180-200

中部190-230

前部180-210-240

喷嘴温度C 180-210-240

模具温度C 40-80-80

注射压力MPa 80-12080-130

保持压力MPa 40-60 40-60

螺杆转速rp.m-1 20-30

注塑制品也需要后处理以消除内应力。处理在70-80℃的热风循环干爆箱中进行。加工时间取决于产品的厚度。一般来说，两者都需要4小时左右

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刘凯蒂

PMMA plastic injection

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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.

PMMA plastic injection

Product Details

PMMA plastic injection

Processing technology

Polymethyl methacrylate can be cast, injection, extrusion, thermoforming and other processes.

1. Casting molding,

Casting is used to form plexiglass plates, bars and other profiles, that is, the profiles are formed by bulk polymerization. Products after casting need to be carried out PMMA plastic injection

Post-treatment, post-treatment conditions are heat preservation at 60C for 2h and heat preservation at 120C for 2h

2. Injection molding

Injection molding uses pellets made by suspension polymerization and molding on a common plunger or screw injection molding machine. Table 1 is polymethacryl

Typical process conditions for injection molding of methyl acid esters.

Table 1 Polymethyl methacrylate injection molding process conditions

Process parametersScrew injection molding machine Plunger injection molding machine

Rear part of barrel core temperature 180-200 180-200

Central 190-230

Front 180-210 210-240

Nozzle temperature C 180-210 210-240

Mold temperature C 40-80 40-80

Injection pressure MPa 80-120 80-130

Holding pressure MPa 40-60 40-60

Screw speed rp.m-1 20-30

Injection molding products also need post-processing to eliminate internal stress. The processing is carried out in a 70-80C hot air circulation dry explosion box. The processing time depends on the thickness of the product. Generally

Both need about 4h.

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