GSO ISO 294-4:2021
塑料 热塑性材料试样的注射成型 第4部分：成型收缩率的测定

Plastics — Injection moulding of test specimens of thermoplastic materials — Part 4: Determination of moulding shrinkage

GSO ISO 294-4:2021 发布历史

GSO ISO 294-4:2021由GSO 发布于 2021-07-01。

GSO ISO 294-4:2021在国际标准分类中归属于: 83.080.20 热塑性塑料。

GSO ISO 294-4:2021 塑料 热塑性材料试样的注射成型 第4部分：成型收缩率的测定的最新版本是哪一版？

最新版本是 GSO ISO 294-4:2021 。

GSO ISO 294-4:2021的历代版本如下：

• 2021年 GSO ISO 294-4:2021 塑料 热塑性材料试样的注射成型 第4部分：成型收缩率的测定

This document specifies a method of determining the moulding shrinkage and post-moulding shrinkage of injection-moulded test specimens of thermoplastic material in the directions parallel to and normal to the direction of melt flow. For the determination of shrinkage of thermosets, see ISO 2577[2]. Moulding shrinkage as defined in this document excludes the effects of humidity uptake. This is included in post-moulding shrinkage and thus in total shrinkage. For cases when post-moulding shrinkage is caused by the uptake of humidity only, see ISO 175[1]. Moulding shrinkage as defined in this document represents the so-called free shrinkage with unrestricted deformation of the cooling plates in the mould during the hold period. It is considered, therefore, as the maximum value of any restricted shrinkage.

标准号

GSO ISO 294-4:2021

发布

2021年

发布单位

GSO

当前最新

GSO ISO 294-4:2021

 

 

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