促進劑對环氧地坪漆的影響有哪些

环氧地坪漆的性能隨环氧樹脂固化促進劑種類的不同而有較大差異，主要表現在以下幾個方面：(1)改進环氧樹脂塗料的力學性能。环氧樹脂塗料的反應活性高、交聯密度大，故塗膜抗蝕性好。但同時也存在物理機械性能不足，如彈性較差、脆性偏大等問題，可以通過引入帶柔性鏈段的固化劑，如帶長鏈脂肪酸的聚酰胺予以改進。
The performance of epoxy floor paint varies greatly with the types of epoxy resin curing accelerators, mainly in the following aspects: (1) Improving the mechanical properties of epoxy resin coatings. The epoxy resin coating has high reactivity and high crosslinking density, so the coating has good corrosion resistance. But at the same time, there are some problems such as po环氧地坪or elasticity and brittleness, which can be improved by introducing curing agent with flexible segments, such as polyamide with long chain fatty acids. (2)改進环氧樹脂塗料的工藝性能。
(2) improve the technological properties of epoxy coatings.
环氧樹脂塗料常在現場大規模施工，存在揮發物的毒性和在潮濕及低溫环境下的可操作性問題。近年來國內外開發瞭多種無毒或低毒，且具有優良的施工性、力學性能和抗蝕性的改性固化劑，如改性酮亞胺類固化劑。
Epoxy resin coatings are often used in large-scale construction in the field. There are toxicity of volatiles and operability problems in humid and low temperature environment. In recent years, a variety of non-toxic or low toxic curing agents with excellent workability, mechanical properties and corrosion resistance have been developed at home and abroad, such as modified ketimide curing agents.
(3)改進环氧樹脂塗料的耐蝕性。
(3) improve the corrosion resistance of epoxy coatings.
不同环氧固化體系的耐蝕性也有較大差別。胺類固化劑固化的环氧樹脂耐堿性好而耐酸性較差，因固化後形成的叔胺結構易與酸反應生成叔銨鹽。而酸酐固化劑固化的环氧樹脂正好相反，耐酸性好而耐堿性較差，因固化後形成的酯基在堿性條件下發生不可逆的水解反應。
彩色沥清地坪The corrosion resistance of different epoxy curing systems is also quite different. The epoxy resin cured with amine curing agent has good alkali resistance and poor acid resistance. The tertiary amine structure formed after curing is easy to react with acid to form tertiary ammonium salt. On the contrary, the epoxy resin cured with anhydride curing agent has good acid resistance and poor alkali resistance. The ester group formed after curing reacts irreversibly under alkaline conditions.
(4)改進环氧樹脂塗料的耐溫性。
(4) improve the temperature resistance of epoxy coatings.
采用脂肪族胺固化劑固化的环氧樹脂，其熱變形溫度較低，通常僅為70~80℃。采用合適的芳香族固化劑或酸酐類固化劑，可使熱變形溫度提高至150℃左右，但後兩類固化劑單獨應用一般需在加熱條件下固化。
The thermal deformation temperature of epoxy resin cured with aliphatic amine curing agent is low, usually only 70 ~ 80 C. The suitable aromatic curing agent or anhydride curing agent can raise the hot deformation temperature to about 150 C, but the latter two kinds of curing agent should be cured under heating condition.
(5)改進环氧樹脂塗料的介電性能。
(5) improve the dielectric properties of epoxy coatings.
當环氧樹脂用於絕緣塗料時，可選擇使用偏苯二酸酐的改進共聚物作固化劑，可明顯提高塗料的耐熱性和介電性能。
When epoxy resin is used in insulating coatings, the modified copolymer of trimellitic anhydride can be selected as curing agent, which can obviously improve the heat resistance and dielectric properties of the coatings.