Saber basic innovative plastics (China) Co., Ltd. was established on February 23, 1994. The business scope of the company includes: wholesale of chemical products (except dangerous chemicals); wholesale of plastic products; wholesale of synthetic fiber; manufacturing of primary form plastics and synthetic resin (except for monitoring chemicals and dangerous chemicals); manufacturing of plastic film; manufacturing of plastic plates, pipes and profiles; manufacturing of plastic granules
PEI的注塑模工艺条件:
熔化温度:普通类型材料为340~400℃;增强类型材料为340~415℃。
模具温度:107~175℃,建议模具温度为140℃。压力:700~1500bar。
速度:使用尽可能高的速度。
干燥处理:PEI具有吸湿特性并可导致材料降解。要求湿度值应小于0.02%。建议干燥条件为150℃、4小时的干燥处理。
Pei has strong high temperature stability, even if it is non reinforced Pei, it still has good toughness and strength. Therefore, Pei can be used to make high temperature heat-resistant devices. Pei also has good flame retardant, chemical resistance and electrical insulation properties. The glass transition temperature is very high, up to 215 ℃. Pei also has low shrinkage and good isotropic mechanical properties. Adding glass fiber, carbon fiber or other fillers can achieve the pure of reinforcement and modification; it can also form heat-resistant polymer alloy with other engineering plastics, which can be used for a long time under the working temperature of - 160 ~ 180 ℃. UL stipulates that the long-term service temperature of polyetherimide resin is 338t and 356t. According to the grade, the combustion grade reaches ul94v-010 mil thickness. The oxygen index is 47, and Pei meets the FAA flame retardant and heat release material standards for aircraft internals. It has a glass transition temperature of 419f and allows intermittent use at 392f, resulting in short-term excursion at higher temperatures.
PEI具有很强的高温稳定性,即使是非增强型的PEI,仍具有很好的韧性和强度。因此利用PEI优越的热稳定性可用来制作高温耐热器件。具有优良的机械性能、电绝缘性能、耐辐照性能、耐高低温及耐磨性能,并可透过微波。PEI还有良好的阻燃性、抗化学反应以及电绝缘特性。玻璃化转化温度很高,达215℃。PEI还具有很低的收缩率及良好的等方向机械特性。加入玻璃纤维、碳纤维或其他填料可达到增强改性的目的;也可和其它工程塑料组成耐热高分子合金,可在-160~180℃的工作温度下长期使用。
由于PEI具有优良的综合平衡性能,卓有成效地应用于电子、电机和航空等工业部门,并用作传统产品和文化生活用品的金属代用材料。用PEI取代金属制造光纤连接器,可使元件结构化,简化其制造和装配步骤,保持更的尺寸。用于汽车领域,如用以制造高温连接件、高功率车灯和指示灯、控制汽车舱室外部温度的传感器(空调温度传感器)和控制空气和燃料混合物温度的传感器(有效燃烧温度传感器)。还可用作耐高温润滑油侵蚀的真空泵叶轮、在180℃操作的蒸镏器的磨口玻璃接头(承接口)、非照明的防雾灯的反射镜。
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