BS EN ISO 294-4-2003 塑料.热塑塑料试样的注射成形.第4部分:模型收缩率的测定

作者:标准资料网 时间:2024-05-15 01:40:36  浏览:8026   来源:标准资料网

【英文标准名称】:Plastics-Injectionmouldingoftestspecimensofthermoplasticmaterials-Determinationofmouldingshrinkage
【原文标准名称】:塑料.热塑塑料试样的注射成形.第4部分:模型收缩率的测定
【标准号】:BSENISO294-4-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-02-28
【实施或试行日期】:2003-02-28
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;处理;塑料;收缩;喷射铸造法;试样制备;定义;收缩特性;工具;试样;试件;注塑模;试验;注射成型机;热塑性聚合物
【英文主题词】:Definitions;Determination;Injectionmoulding;Injectionmouldingmachines;Injectionmoulds;Plastics;Processing;Shrinkage;Shrinkagebehaviour;Specimenpreparation;Testpieces;Testspecimens;Testing;Thermoplasticpolymers;Tools
【摘要】:ThispartofISO294specifiesamethodofdeterminingthemouldingshrinkageandpost-mouldingshrinkageofinjection-mouldedtestspecimensofthermoplasticmaterialinthedirectionsparalleltoandnormaltothedirectionofmeltflow.ForthedeterminationofshrinkageofthermosetsseeISO2577[2].MouldingshrinkageasdefinedinthispartofISO294excludestheeffectsofhumidityuptake.Thisisincludedinpost-mouldingshrinkageandthusintotalshrinkage.Forcaseswhenpost-mouldingshrinkageiscausedbytheuptakeofhumidityonly,seeISO175^.MouldingshrinkageasdefinedinthispartofISO294representstheso-calledfreeshrinkagewithunrestricteddeformationofthecoolingplatesinthemouldduringtheholdperiod.Itmaybeconsideredthereforeasthemaximumvalueofanyrestrictedshrinkage.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:22P;A4
【正文语种】:英语