消失模铸造模样材料发气特性的研究

毛高波; 程诗桢; 饶群章

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消失模铸造模样材料发气特性的研究
Study on the Gas-Evolution Behavior of Pattern Material in Evaporative Pattern Casting
1998年第2期
纸质出版日期： 1998 ，
DOI：

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[1]毛高波,程诗桢,饶群章.消失模铸造模样材料发气特性的研究[J].特种铸造及有色合金,1998(02):12-14.

Mao Gaobo Cheng Shizhen Rao Qunzhang. Study on the Gas-Evolution Behavior of Pattern Material in Evaporative Pattern Casting[J]. Special Casting & Nonferrous Alloys, 1998,(2).
[1]毛高波,程诗桢,饶群章.消失模铸造模样材料发气特性的研究[J].特种铸造及有色合金,1998(02):12-14. DOI：

Mao Gaobo Cheng Shizhen Rao Qunzhang. Study on the Gas-Evolution Behavior of Pattern Material in Evaporative Pattern Casting[J]. Special Casting & Nonferrous Alloys, 1998,(2). DOI：

摘要

通过对ＥＰＳ和ＰＭＭＡ材料的对比试验，研究了两种材料在１００～３００℃时的热变化；系统研究了两种材料在高温下的发气量与时间、发气量与温度的关系。结果表明，ＰＭＭＡ试样在１５０℃左右时有体积膨胀现象；ＰＭＭＡ的发气温度要比ＥＰＳ高；ＰＭＭＡ在高温下的发气量、发气速度均比ＥＰＳ的大。

Abstract

A comparative experiment of EPS with PMMA has been made. The behaviors of EPS and PMMA under heating in the temperature range of 100-300 ℃ and the relationships between the amount of gas-evolution at high temperature

time and temperature have been systematically studied. The result showed that the PMMA test sample has volumetric expansion at about 150 ℃

the gas-evolution temperature and velocity of PMMA are higher than those of EPS

and the gasevolution amount of PMMA at high temperature is more than that of EPS.