相關標簽:美國陶氏 HIPS、韓國錦湖 HIPS、MBA聚合物 GPPS塑料原料、注射成型 膠黏劑、復合 偏苯三酸三(2-乙基己基)酯、流動性低 PTFE+PPS塑料原料
這種缺點的呈現首要是選用色母粒上色的塑料制件較常呈現的問題,盡管色母粒上色在色型穩定性、色質純度和色彩遷移性等方面均優于干粉上色、染漿上色,但分配性,亦即色粒在稀釋塑料在混合均勻程度卻相對較差,制成品自然就帶有區域性色澤差異。首要解決辦法:(1)進步加料段溫度,特別是加料段后端的溫度,使其溫度挨近或略高于熔融段溫度,使色母粒進入熔融段時趕快熔化,促進與稀釋均勻混合,添加液態混合時機。(2)在螺桿轉速一定的情況下,添加背壓壓力使料筒內的熔料溫度、剪切作用都得到進步。(3)修正模具,特別澆注系統,如澆口過寬,融料通過期,紊流作用差,溫度提高不高,于是就不均勻,色帶模腔,應予改窄。 。以上文獻若需轉載請備注出處:PBT樹脂 //shanglikaiguan.cn/
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熔融指數 | 1 |
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