描述
防静电PBT
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
抗静电PBT
产品详细信息
PBT塑料原材料的干燥过程：
这种材料在高温下容易水解，因此加工前的干燥处理非常重要。建议在空气中干燥6~8小时的温度为120°C，或2~4小时的温度为150°C。湿度必须小于0.03%。如果使用吸湿干燥器进行干燥，建议在150°C温度下干燥2.5小时。[2] 熔化温度：225~275℃，建议温度：250℃。模具温度：无加强材料为40~60℃。为了减少塑料件的弯曲，有必要设计好模具的冷却腔。热损失必须迅速且均匀。建议模具冷却通道的直径为12mm。注射压力：中等（高达1500巴）。注射速度：应使用尽可能快的注射速度（因为PBT固化很快）。流道和浇口：建议使用圆形流道来增加压力传递（经验公式：流道直径=塑料件厚度+1.5mm）。可以使用各种类型的闸门。也可以使用热流道，但必须注意防止材料泄漏和降解。浇口直径应在0.8到1.0t之间，其中t是塑料零件的厚度。如果是水下闸门，建议小直径为0.75mm。PBT是一种线性热塑性饱和聚酯，主链上有酯键。它的化学名称是聚对苯二甲酸丁二醇酯，简称PBT。它是一种与PET树脂类型相同的聚合物。由于其熔点和结晶度高，吸水率和热膨胀系数也很低，因此具有优异的尺寸稳定性。此外，它还具有优良的电气绝缘性、吸湿引起的电气性能变化小、绝缘电压高。在PBT的聚集结构中，有结晶区和非晶区。因此，通过添加其他物质使其具有多种功能，可以很容易地对其进行改性。有多种功能等级，如阻燃等级、高速成型等级和高冲击等级
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Electric & Electrical, Chemical Machinery,
Automobile Industry
Anti-static PBT
Product Details
Anti-static PBT
Drying process of PBT plastic raw materials:
This material is easily hydrolyzed at high temperatures, so the drying treatment before processing is very important. The recommended drying condition in the air is 120°C for 6~8 hours, or 150°C for 2~4 hours. The humidity must be less than 0.03%. If you use a moisture-absorbing dryer to dry, the recommended conditions are 150°C for 2.5 hours. [2] Melting temperature: 225~275℃, recommended temperature: 250℃. Mold temperature: 40~60℃ for unreinforced materials. It is necessary to design the cooling cavity of the mold well to reduce the bending of the plastic part. The heat loss must be fast and even. It is recommended that the diameter of the mold cooling channel is 12mm. Injection pressure: medium (up to 1500bar). Injection speed: The fastest possible injection speed should be used (because PBT solidifies quickly). Runner and gate: It is recommended to use a circular runner to increase the pressure transmission (empirical formula: runner diameter = plastic part thickness + 1.5mm). Various types of gates can be used. Hot runners can also be used, but care must be taken to prevent leakage and degradation of materials. The gate diameter should be between 0.8 and 1.0t, where t is the thickness of the plastic part. If it is a submerged gate, the small diameter is recommended to be 0.75mm. PBT is a linear thermoplastic saturated polyester with an ester bond in its main chain. Its chemical name is Polybutylene Terephthalte, or PBT for short. It is a polymer of the same type as PET resin. Because of its high melting point and crystallinity, water absorption and thermal expansion coefficient are also very low, so it has excellent dimensional stability. In addition, it also has excellent electrical insulation, little change in electrical properties caused by moisture absorption, and high insulation voltage. In the aggregated structure of PBT, there are crystalline regions and amorphous regions. Therefore, it can be easily modified by adding other substances to give it various functions. There are various grades with various functions, such as flame-retardant grades, high-speed molding grades, and high-impact grades.
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