滌綸、尼龍、棉及其混紡織物做防水防油需要注意什么?
1.前處理面料必須精煉干凈,殘留的表面活性劑會(huì)影響防水效果,整理前的面料要求pH不可偏堿;
2.選擇合適的焙烘溫度及時(shí)間,過(guò)高溫度及長(zhǎng)時(shí)間反而降低防水效果;
3.當(dāng)需要提高浸軋時(shí)的滲透效果,可加入2-5g/l異丙醇或0.2-0.5g/l非硅抑泡滲透劑;
4.柔軟劑可能會(huì)對(duì)防水效果造成極大的影響,如要同浴使用,必須先試驗(yàn);
5.后續(xù)加工比如軋光,抓毛,涂層可能會(huì)對(duì)防水效果影響大,需要預(yù)先試驗(yàn)并調(diào)整工藝;
6.加工時(shí)可能會(huì)有色變及色牢度的問(wèn)題,需要預(yù)先試驗(yàn)。
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