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改性塑料

Briefly describe the effects of mismatched thermal expansion coefficients of filled modified plastics

发布日期: 2019.12.02 Source: Sino-Singapore Huamei official websiteRelease date: 2019.12.02
Information summary:
In recent years, China's demand for modified plastics has continued to increase. In 2018, China's output of modified plastics was 18.78 million tons, a year-on-year increase of 6.4%, and the modification rate was 20.8%; the demand was about 11.89 million tons ...

2018年我国改性塑料产量为1783万吨,同比增长6.4%,改性化率为20.8%;需求量约为1189万吨。 In recent years, China's demand for modified plastics has continued to increase. In 2018, China's output of modified plastics was 18.78 million tons, a year-on-year increase of 6.4%, and the modification rate was 20.8%. The development potential of the modified plastics market is huge, and the modification technology has also received increasing attention. 热膨胀系数不匹配时产生的效应。 Huamei Xiaobian will share with you the effect of the thermal expansion coefficient of filled modified plastics .

填充改性塑料热膨胀系数不匹配产生的效应

Zhongxin Huamei Products--Modified Plastic Particles

The thermal expansion coefficient of polymers is generally much larger than that of inorganic fillers. : When an inorganic filler with a small thermal expansion coefficient is used to fill a modified plastic with a large thermal expansion coefficient, due to the mismatch of the thermal expansion coefficients between the components, the following important effects will occur :

1, When cooling from the processing molding temperature or curing temperature, the large shrinkage of the resin matrix will cause the filling material to be squeezed.

2, The resin matrix near the surface of the filling material may be subjected to a large tangential tensile force, resulting in a decrease in the strength of the filled modified plastic.

3. The coefficient of thermal expansion of the filled modified plastic is much smaller than that of the corresponding pure matrix resin, which can reduce the molding shrinkage and improve the dimensional stability of the product.

4. “挠曲”现象,制品的尺寸稳定性反而因此变差。 For filling materials with large aspect ratios, they often have a certain form and a certain degree of oriented composite structure in filled modified plastics or products, which results in anisotropy of the coefficient of thermal expansion in the orientation direction and perpendicular to the orientation direction. The change may cause "deflection", and the dimensional stability of the product is worsened.

是生产改性塑料颗粒、染色塑料颗粒的厂家, 23年的热塑性塑料定制加工经验, 拥有华北地区仅一台套的奇美配色品管系统,保证颜色的一致性。 Qingdao Zhongxin Huamei Plastic Co., Ltd. is a manufacturer of modified plastic granules and dyed plastic granules. With 23 years of experience in custom processing of thermoplastics, it has only one set of Chi Mei color matching quality control system in North China to ensure color consistency. 30人,保障材料性能的稳定性。 30 technical research and development teams to ensure the stability of material properties. 核心优势就是个性化定制,小批量生产,而且是厂家直销,反映迅速,对于中小型企业来说能够获得高的性比价。 The core advantages of Qingdao Zhongxin Huamei are personalized customization, low-volume production, and direct factory sales, which are reflected quickly and can obtain high sex parity for small and medium-sized enterprises.

填充改性塑料热膨胀系数不匹配产生的效应 详情请致电: If you want to know the effects of mismatched thermal expansion coefficients of filled modified plastics , please call:   400-606-8757, 13792886757 (same number on WeChat) or online consultation . 可以为您提供定制方案、免费报价! Qingdao Zhongxin Huamei Plastic Co., Ltd. is a manufacturer of modified plastics and dyed plastics. We can provide customized solutions and free quotes for you!

The above is the original of Qingdao Zhongxin Huamei Plastic Co., Ltd. Please indicate the source when reprinting: http://wwwatandt.com/

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