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ABS透明管的电学性能及加工性能

作者:管理员 来源: 日期:2014/10/14 8:49:53 人气:17 评论:0 标签:
ABS透明管的电学性能及加工性能
电学性能
  ABS的电绝缘性较好,并且几乎不受温度、湿度和频率的影响,可在大多数环境下使用。
环境性能
  ABS不受水、无机盐、碱及多种酸的影响,但可溶于酮类、醛类及氯代烃中,受冰乙酸、植物油等侵蚀会产生应力开裂。ABS的耐候性差,在紫外光的作用下易产生降解;于户外半年后,冲击强度下降一半。
ABS electrical properties and processing properties of transparent tubes 
Electrical Properties 
ABS electrical insulation is better, and almost independent of temperature, humidity and frequency, can be used in most environments. 
Environmental performance 
ABS from water, inorganic salts, alkalis and a variety of effects of acid, but soluble in ketones, aldehydes, and chlorinated hydrocarbons by glacial acetic acid, vegetable oil will produce stress corrosion cracking. ABS poor weather, under the action of ultraviolet light easy to produce degradation; outdoor six months, the impact strength decreased by half.
ABS塑料的加工性能
  ABS同PS一样是一种加工性能优良的热塑性塑料,可用通用的加工方法加工。   ABS的熔体流动性比PVC和PC好,但比PE、PA及PS差,与POM和HIPS类似;ABS的流动特性属非牛顿流体;其熔体粘度与加工温度和剪切速率都有关系,但对剪切速率更为敏感。   ABS的热稳定性好,不易出现降解现象。ABS的吸水率较高,加工前应进行干燥处理。一般制品的干燥条件为温度80~85℃,时间2~4h;对特殊要求的制品(如电镀)的干燥条件为温度70~80℃,时间18~18h。ABS制品在加工中易产生内应力,内应力的大小可通过浸入冰乙酸中检验;如应力太大和制品对应力开裂绝对禁止,应进行退火处理,具体条件为放于70~80℃的热风循环干燥箱内2~4h,再冷却至室温即可。
ABS plastics processing performance 
ABS with PS is an excellent processability as thermoplastics, common processing methods can be processed. ABS melt flow ratio of PVC and PC good, but worse than PE, PA and PS, similar to the POM and HIPS; flow characteristics of the ABS is a non-Newtonian fluid; melt viscosity and processing temperature and shear rate have a relationship However, more sensitive to shear rate. ABS good thermal stability, and less prone to degradation phenomena. ABS high water absorption, should be dried before processing. General products, dry conditions for temperature 80 ~ 85 ℃, time 2 ~ 4h; special requirements of products (such as electroplating) drying conditions for temperature 70 ~ 80 ℃, time 18 ~ 18h. ABS products easy to produce in the processing of internal stress, the size of the internal stress can be immersed in glacial acetic acid test; such as stress too much stress cracking and articles for absolute prohibition, should be annealed, the specific conditions placed on the hot air circulation for 70 ~ 80 ℃ of the oven 2 ~ 4h, then cooled to room temperature.
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