Tensile properties of ICM polycarbonate part under low temperature

JIANG Jing; WANG Xiaofeng; HOU Jianhua; LI Qian; XU Yiyang

doi:10.11949/j.issn.0438-1157.20150292

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Tensile properties of ICM polycarbonate part under low temperature

更新时间：2025-12-10

- Tensile properties of ICM polycarbonate part under low temperature
- CIESC Journal Issue 10, Pages: 4268-4274(2015)
- 作者机构：
  
  1. 郑州大学材料科学与工程学院,河南,郑州,450001
  2. 微纳成型技术国际联合研究中心,河南,郑州,450001
  3. 河南省微成型技术重点实验室,河南,郑州,450001
  4. 郑州大学力学与工程科学学院,河南,郑州,450001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150292
  CLC： Q028.8
- Online First：05 October 2015，
  
  Published：05 October 2015
- 稿件说明：
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JIANG Jing, WANG Xiaofeng, HOU Jianhua, et al. Tensile properties of ICM polycarbonate part under low temperature[J]. CIESC Journal, 2015, (10): 4268-4274.
DOI：

JIANG Jing, WANG Xiaofeng, HOU Jianhua, et al. Tensile properties of ICM polycarbonate part under low temperature[J]. CIESC Journal, 2015, (10): 4268-4274. DOI： 10.11949/j.issn.0438-1157.20150292.

摘要

以聚碳酸酯为材料

利用自行设计带有压缩功能的模具

采用常规注塑成型(IM)和注射压缩成型方法(ICM)对比研究制品在常温和低温环境下的拉伸力学性能;基于单因素实验方法

研究熔体温度、模具温度、模板压缩距离、延迟时间和压缩力对ICM制品残余应力和低温拉伸性能的影响规律。结果表明:在相同的环境温度下

ICM制品较IM制品有较大的屈服应力和弹性模量;低温环境下样品的拉伸性能有所提升

并在-40℃附近出现了聚碳酸酯分子的次级玻璃化转变;残余应力是影响ICM制品低温拉伸性能的主要因素

较高的熔体温度、模具温度、模板压缩距离

以及较短的延迟时间

较小的压缩力会减小ICM制品的残余应力

提高制品的低温拉伸性能。

Abstract

Tensile properties of conventional injection molding (IM) PC (polycarbonate) and injection-compression molding (ICM) parts in room and low temperature were compared. The effect of five process parameters (melt and mold temperature

compression distance

delay time and compression force) on residual stress and tensile properties of ICM parts under low temperature was investigated systematically. The results showed that higher tensile yield stress and Modulus were found for ICM parts compared with IM part. Tensile properties of ICM or IM parts were improved under low temperature. Secondary transition were discovered around -40℃ for PC. As the most influenced morphology

the residual stress of ICM parts has the opposite variation as the function of process parameters. Higher melt and molding temperature

bigger compression distance

shorter delay time and smaller compression force can be helpful to give lower residual stress value

and thus to improve the tensile properties.

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Related Institution

School of Chemical Engineering and Energy, Zhengzhou University

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