快速脱漆剂配方

2025-04-02 20:27:44
推荐回答(1个)
回答1:

溶剂的选择:要采用分子量低的,因为它能够在脱漆时迅速渗透到涂层中去,使漆膜软化膨胀,尽快脱落,但溶解力又要居中,能使被剥离的涂层在脱漆剂中不被溶化,有助于脱漆剂的使用寿命,如二氯甲烷、三氯甲烷等;

助溶剂:助溶剂虽然没有脱漆效果,但与二氯甲烷等配合用,可增进脱漆效果,而且助溶剂价格便宜,可降低成本方面献,如甲醇、乙醇就是很理想的助溶剂;

活化剂:一般活化剂多选用有机酸中的甲酸,它可加速脱漆效果,是脱漆剂中主要成分之一,不过单独使用一种甲酸,活化效果还不够理想,若再配以甲酚或苯酚,效果就会明显增加;

增稠剂:用它的目的是使脱漆剂增加粘度,减少脱漆剂流动性和降低脱漆剂挥发速度,有利于大面积涂敷时脱漆效果,如纤维素、有机玻璃等;

阻挥发剂:如石腊、平平加等,加入它们,使脱漆剂在徐在旧漆膜表面后,形成一层薄膜,封闭着表面,使脱漆剂中的溶剂难以挥发,可提高脱漆效果。

几种脱漆剂配方

(1)T-1脱漆剂:

醋酸乙酯26;丙酮10;甲苯56;石腊8

(2)T-2脱漆剂:

乙二醇缩甲醛52.48,丙酮9.54;甲苯28.63;乙醇4.77;硝化棉(70%)3.44;石腊1.14。

(3)T-3脱漆剂

二氯甲烷72;甲基纤维素3;乙二醇乙醚4;甲醇6;烷基苯磺酸钠5;乙醇胺5;石腊2;水3。

(4)特种脱漆剂

二氯甲烷44;烷基苯磺酸钠4;胶淀粉乙醇胺12;醋酸丁酯20;四氯化碳4;乙醇10;石腊6。

(5)特种脱塑剂

二氯甲烷86;苯酚3.5;甲酸(纯度85%-88%)6;乙基纤维素1.5;有机玻璃(碎末)1l;石腊2。

(6)碱液脱漆剂(钢铁件专用)

(氢氧化钠80;碳酸钠20)20%;水80%

(7)酸液脱漆剂(铝合金专用)

无水工业硝酸(有烟)100%。

T-1脱漆剂、T-2脱漆剂对油性漆、酚醛磁漆、醇酸磁漆类有较好的脱漆效果,因为这类漆的主要基料是于性油和少量树脂,漆膜硬度不高,脱漆剂内的镕剂容易渗透到涂层内部,从而使旧漆膜很快膨胀脱落。T-3脱漆剂对硝基纤维漆、过氯乙烯漆、热塑型丙烯酸漆等脱漆效果较好,因为这类漆以溶剂挥发为干操持性,也称挥发性漆,能被强溶剂很快溶解,T-3脱漆剂内就含有二氯甲烷强溶剂,所以能很快脱除这类旧漆膜。

氨基漆、聚氨酯漆、热固型丙烯酸漆,其漆膜硬度较高,附着牢固,用T-1脱漆剂、T-2脱漆别是难以脱除这类旧漆膜的,即使用T-3脱漆剂效果也较差,只有选用特种脱漆剂才行。粉末涂料和电泳涂料,其涂层硬度和附着力都较高,需配制一种专用脱塑剂才能达到理想的要求。

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