1. Alkalineresin

EVA guduro ne thecopolymerization dauki na ethylene da vinyl acetate a karkashin high zafin jiki da kuma high matsa lamba, kuma shi ne ainihin guduro na EVA zafi narkewa m. EVA resini shine babban bangaren hko narke m. Dangane da rabon da ake buƙata, gabaɗaya yana lissafin 40% -60% na manne narke mai zafi. A rabo daga cikin baseresin kayyade asali Properties na zafi narke m, kamar thebonding ikon, narkewa zafin jiki, da zabi da kuma shirye-shiryen Additives, da dai sauransu, duk sun dogara da rabo daga tushe guduro.

2. Tackifier

Tackifier yana ɗaya daga cikin manyan abubuwan ƙari na EVA zafi narke m. Idan aka yi amfani da resin alkaline kawai, zai sami mannewa ne kawai lokacin da aka narke a wani yanayin zafi. Da zarar yanayin zafi ya faɗi, ba zai iya haɗawa da ƙarfi ba, ko ma rasa haɗin kai. Danshi permeability ne matalauta da manufa bonding sakamako ba za a iya samu. Ƙara wasu abubuwan da za su iya narkewa tare da resin alkaline yana inganta aikin haɗin gwiwa, wanda ke buƙatar ƙarin tackifier. Ƙara adadin da ya dace na tackifier zuwa EVA zafi narke manne zai iya inganta ruwa na colloid, game da shi inganta wettability da permeability na colloid zuwa manne, yana ƙara ƙarfin haɗin gwiwa, da saduwa da buƙatun littafin don ƙarfin haɗin gwiwa. Tackifier gabaɗaya suna amfani da rosin da resin terpene, kuma rabon yana tsakanin 15% da 20%.

3. Viscosityregulator

Lokacin zabar aviscosity modifier, ya kamata ka zaɓi wani abu tare da ƙaramin narkewa, kamar paraffin, wanda wurin laushi (madaidaicin narkewa) yake tsakanin 65 da 105 ° C, wanda ya fi ƙasa da resin tushe (madaidaicin laushi na baseresin yana sama. 100°C). Sabili da haka, kakin zuma shine mafi dacewa mai gyaran danko.Ya kamata a ba da hankali ga ma'auni mai ma'ana lokacin motsawa. Yawan paraffin ko kuma kadan zai shafi ingancin mannen narke mai zafi na EVA, don haka ya kamata a daidaita shi da sauran abubuwan da ake buƙata. Ana sarrafa kashi na gaba ɗaya a kusan 10%.

4. Antioxidants

Colloid zai zama oxidized kuma bazuwa saboda yawan zafin jiki a lokacin tsarin narkewa.Ƙara maganin antioxidants masu dacewa zai iya hana tsufa na EVA zafi meltadhesive. Bugu da ƙari, a yanayin zafi mai girma, ƙara adadin da ya dace na antioxidants ba zai canza mannewar abin da ke ɗaure ba, wanda ya isa ya tabbatar da tasirin ɗan littafin. Di-tert-butyl p-methylphenol (BHT) ana amfani da shi azaman antioxidant. kyakkyawan sakamako. Ana sarrafa adadin BHT gabaɗaya a kusan 0.5%.

5. Sanyi da zafi

EVA zafi meltadhesive wani nau'i ne na kayan mannewa na thermoplastic, wanda ke buƙatar tsauraran yanayi a cikin amfani. Ƙara wani wakili mai jurewa sanyi zai iya hana lokacin buɗewa da lokacin warkarwa na gel daga ci gaba a ƙananan yanayin zafi a cikin hunturu, ta haka yana rinjayar mannewar littafin. Saboda yawan zafin jiki a lokacin rani da bambance-bambancen yanki, ƙara wakili mai jurewa zafi zai iya hana gel daga wuyar ƙarfafawa da sanyi, wanda zai shafi ingancin yankewa da bayyanar littafin.