成型收缩率

但其冲击强度较小，拉伸强度偏低，并且成型收缩率较大，这就大大限制了PP的应用。

However , it has limited impact strength and large mold shrinkage , which greatly limit its application .

同时增加润滑效果，使制品成型收缩率适当减小，提高制品的尺寸稳定性和美观性。

Meanwhile , it could promote the lubricating effects , moderately reduce the molding shrinkage ratio of products , and improve the dimensional stability and elegance of products .

PA成型收缩率与注射工艺条件的关系

Ralation Between Molding Shrinkage for PA Processing and the Injection Conditions

研究了熔体流动性、分子取向、填料等因素对聚碳酸酯（PC）成型收缩率的影响。

The effects of the fluidity of polymers melt , orientation , and the filler in the polymer on shrinkage of Polycarbonates were studied in this paper .

本文采用多元组分对PP进行了协同改性，以期制备高强、高韧且成型收缩率较小的改性聚丙烯复合材料。

In order to get PP composites with low mold shrinkage and high strength and toughness , multi-components were adopted in this work to co-modify PP.

注塑参数对聚碳酸酯成型收缩率的影响研究

Influence of injection molding parameters on the molding shrinkage of polycarbonate

HDPE/LLDPE/CaCO3共混物注射成型收缩率的研究

Study on Injection Moulding Shrinkage of HDPE / LLDPE / CaCO_3 Blend

聚酰胺1010精密注射成型收缩率的研究

Study on precision injection mould shrinkage of Polyamide 1010

此外还介绍了成型收缩率的评价方法。

A evaluative method of forming shrinkage was introduced .

GB/T15585-1995热塑性塑料注射成型收缩率的测定

Determination of shrinkage for injection moulding thermoplastics

本文介绍了小模数塑料齿轮模具型腔尺寸的设计原则和成型收缩率的处理方式。

The article discusses the design principle of the cavity of a mould for plastic gears with low module and the way to handle shrinkage rate during forming .

采用模拟实验的方法，在相同注射工艺条件下，保持浇口尺寸和位置不变，对不同厚度制品的成型收缩率进行模拟实验研究，绘制了模拟实验曲线。

Using simulation experiment , shrinkages of injection molding parts with different thickness are studied . Simulation experiments are performed with same parameter of process condition and fixed gate dimension and position .

但是聚丙烯本身韧性差、抗低温冲击性能差、成型收缩率大，限制了它在高压绝缘领域的应用。

But PP also has the disadvantages itself that its toughness is poor , its low temperature resistance is poor and its molding shrinkage is big , so that the application in the field of high-voltage insulation is limited .

试验结果表明：随着碳酸钙含量的不断增加，两种体系的成型收缩率都呈现不断减小的趋势，但是下降的趋势不是很明显，原因可能是由于碳酸钙的加入促进了聚丙烯的结晶；

The results showed that the mould shrinkage of the two systems was decreasing persistently with increasing the content of the calcium carbonate , but not significantly , the reason of which may be the addition of the calcium carbonate accelerated the crystallization of polypropylene .

注塑成型制品收缩率预测理论与方法的研究

Research on Prediction of Shrinkage for Injection Molded Parts

在这些应用场合，不仅要求塑料制品的精度高，而且塑料制品形状也比较复杂，这使得对注塑成型制品收缩率的控制变得十分重要。

Industrial plastic parts are usually requested to have high precision and complicated shapes , so it is important to control the shrinkage rates of injection-molded parts .

并就简化模具结构设计的优缺点与前后三次激光选区烧结（SLS）的成型工艺条件和收缩率进行了探讨，提出了SLS技术的现状、发展趋势与方向。

The advantages and disadvantages of simplifying the mould structure , and the molding condition and contraction rate of the successive SLS three times are discussed . Further more , the status in quo , the trend and direction for further development of SLS is put forward .

鼠标薄壁塑件成型过程中的收缩率探讨

The Research of the Shrinkage in Forming Process of the Thin-wall Plastic Products Mouse

本文分析了精密注塑成型过程中温度与制品收缩率的复杂关系，特别是在聚合物不同的情况下温度对精密注塑成型制品收缩率的综合影响。

The complex connections between temperature and shrinkage are described in this work , And how these connections are affected by the characteristics of plastics is discussed too .

结果表明，制品厚度对其成型收缩的影响很大，制品厚度增大时，注射成型收缩率增大，但这种增大的趋势是非线性的，而是随着厚度的增加而逐渐减缓。

The results show that the shrinkage of injection molding part is increased with thickness of parts in non-linearity , and the increase momentum is moderated with the increase of thickness .