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    施工环境对环氧地坪涂料性能的影响有哪些

    2018-10-19 10:42:29 无锡盛发地坪科技有限公司 阅读

    环氧树脂涂料的功能随环氧树脂固化促进剂品种的差异而有较大分辨,重点呈现在下面几个方面:改进环氧树脂涂料的力学功能.环氧树脂涂料的反应活性高、交联密度大,故涂膜抗蚀性好.但同时也存在物理机械功能不及,如弹性较差、脆性偏大等问题,可以通过引入带柔性链段的固化剂,如带长链脂肪酸的聚酰胺给与改进.

    The function of epoxy resin coatings can be distinguished by the variety of epoxy resin curing accelerators. The emphasis is put on the following aspects: improving the mechanical function of epoxy resin coatings. Poor and brittle problems can be improved by introducing curing agents with flexible segments, such as polyamides with long chain fatty acids.

    改进环氧树脂涂料的工艺功能.环氧树脂涂料常在现场大规模施工,存在挥发物的毒性以及在润湿及低温环境下的可操作性问题.近年来国内外开辟了多种无毒或低毒,且拥有良好的施工性、力学功能以及抗蚀性的改性固化剂,如改性酮亚胺类固化剂.

    Improving the technological function of epoxy resin coatings. Epoxy resin coatings are often used in large-scale construction on site. There are toxicity of volatiles and maneuverability problems in wetting and cryogenic environments. In recent years, a variety of non-toxic or low-toxic curing agents with good workability, mechanical function and corrosion resistance have been developed at home and abroad, such as modification. Keto imide curing agents.

    改进环氧树脂涂料的耐蚀性.差异环氧固化系统的耐蚀性也有较大分辨.胺类固化剂固化的环氧树脂耐碱性好而耐酸性较差,因固化后造成的叔胺结构易与酸反应生成叔铵盐.而酸酐固化剂固化的环氧树脂刚好相反,耐酸性好而耐碱性较差,因固化后造成的酯基在碱性前提下产生不可逆的水解反应.

    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. It is poor because of the irreversible hydrolysis reaction of ester groups caused by curing.

    改进环氧树脂涂料的耐温性.选用脂肪族胺固化剂固化的环氧树脂,其热变形温度较低,平常仅为70~80℃.选用适合的芳香族固化剂或酸酐类固化剂,可使热变形温度升高至150℃控制,但后两类固化剂独自运用平常需在加热前提下固化.

    The temperature resistance of epoxy resin coatings is improved. Aliphatic amine curing agent is selected to curing epoxy resin, and its thermal deformation temperature is low, usually only 70-80 C. Selecting suitable aromatic curing agent or anhydride curing agent can raise the thermal deformation temperature to 150 C, but the latter two curing agents usually need to be cured under heating alone.

    改进环氧树脂涂料的介电功能.当环氧树脂用于绝缘涂料时,可挑选运用偏苯二酸酐的改进共聚物作固化剂,可显然升高涂料的耐热性以及介电功能.

    The dielectric function of epoxy resin coatings can be improved. 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 function of the coatings.


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