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當前位置:首頁 > 新聞中心 > 決定水性保定環氧地坪漆固化程度的四個因素

決定水性保定環氧地坪漆固化程度的四個因素

2021-12-21

水性保定環氧地坪漆為多相體系,環氧樹脂和固化劑以分散相形式分散在水相中,交聯固化過程是在水分蒸發的過程中微粒之間的相互滲透內部擴散交聯反應過程,因此水性保定環氧地坪漆的固化程度取決于以下四個因素:a)相容性:水性環氧樹脂與水性環氧固化劑的相容性越好,越有利于固化劑微粒與環氧樹脂微粒相互內部擴散,有利于固化反應的進行;

Waterborne epoxy floor paint is a multiphase system. Epoxy resin and curing agent are dispersed in aqueous phase in the form of dispersed phase. The cross-linking and curing process is a process of internal diffusion and cross-linking between particles in the process of water evaporation. Therefore, the curing degree of waterborne epoxy floor paint depends on the following four factors: a) water compatibility: The better the compatibility of waterborne epoxy resin and epoxy curing agent, the more conducive to the internal diffusion of curing agent particles and epoxy resin particles, conducive to the curing reaction. b)粒徑:粒徑較小時,水性環氧樹脂與水性環氧固化劑分散相粒子能夠較充分地相互滲透到內核從而達到較完全的固化程度;

B) Particle size: when the particle size is small, the dispersed phase particles of water-borne epoxy resin and water-borne epoxy curing agent can penetrate into the core more fully to achieve a more complete degree of curing.

c)親水親油平衡值:水性環氧樹脂與水性環氧固化劑的親水親油平衡值接近,在水相中達到一致的共存 穩定狀態,如果差異較大,親水性較強的組分會逐漸聚集于水相中,從而導致樹脂相和固化劑相分離;

C) Hydrophilic-lipophilic equilibrium value: the hydrophilic-lipophilic equilibrium value of waterborne epoxy resin and waterborne epoxy curing agent is close to each other, reaching a consistent coexistence and stability state in the water phase. If the difference is large, the hydrophilic components will gradually accumulate in the water phase, resulting in the separation of the resin phase and curing agent phase.

d)分散均勻程度:在多相分離的狀態下,只有通過一定的機械攪拌作用, 才能將樹脂相和固化劑相均勻分布于水相中; (環氧在應用中攪拌混合均勻非常重要)(有些朋友在使用油性環氧過程中認為只要簡單攪拌甚至不攪拌也能 成膜,其實這存在很大的誤區,因為所使用的油性環氧是由固體環氧溶解而成如75%的E-20,即使不加固化劑,溶劑揮發后可形成很硬的干膜狀態,但這種干膜是未經固化劑交聯固化的,受熱后變成液態,干膜毫無性能可言) 。

D) Dispersion uniformity: in the state of multi-phase separation, only through a certain mechanical stirring can the resin phase and curing agent phase be evenly distributed in the water phase; (epoxy in the application of mixing uniformity is very important) (some friends in the use of oily epoxy that as long as simple stirring or even not stirring There is a big mistake in forming film because the oily epoxy used is dissolved by solid epoxy as 75% of E-20. Even if no hardener is used, the solvent can be volatilized to form a very hard dry film, but this dry film is not cured by curing agent cross-linking and becomes liquid after heating, and the dry film has no performance. ).



標簽:   保定環氧地坪 地坪 保定環氧地坪漆 保定環氧地坪施工 水性保定環氧地坪
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