描述

PMMA的化学性质

PMMA塑料材料

优良的透明度和优异的耐老化性

PMMA具有重量轻、成本低、易于成型的优点

聚甲基丙烯酸甲酯的化学性质

产品详细信息

聚甲基丙烯酸甲酯的化学性质

耐化学性和耐溶剂性

聚甲基丙烯酸甲酯可以承受相对稀释的无机酸，但浓缩的无机酸会使其腐蚀，并且可以抵抗碱，但温暖的氢氧化钠和氢氧化钾会使其腐蚀，耐盐、耐油脂、耐脂肪烃，不溶于水、甲醇、甘油等，但会吸收酒精、膨胀并导致应力开裂。它对酮、氯代烃和芳香烃没有抵抗力。其溶解度参数约为18.8（J/CM3）1/2，可溶解于多种氯化烃和芳香烃中，如二氯乙烷、三氯乙烯、氯仿、甲苯等，醋酸乙烯和丙酮也可使其溶解

耐候性

聚甲基丙烯酸甲酯具有优异的耐大气老化性。经过4年的自然老化试验，样品的抗拉强度和透光率略有下降，颜色轻微变黄，抗开裂性下降。显然，冲击强度略有提高，其他物理性能几乎没有变化

聚甲基丙烯酸甲酯易于燃烧，其极限氧指数仅为17.3

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Chemical Properties Of PMMA

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PMMA Plastic Material
Excellent transparency and outstanding aging resistance
PMMA has the advantages of light weight, low cost and easy molding.

Chemical Properties Of PMMA

Product Details

Chemical properties of PMMA

Chemical resistance and solvent resistance

Polymethyl methacrylate can withstand relatively dilute inorganic acids, but concentrated inorganic acids can make it corrode, and it can be resistant to alkalis, but warm sodium hydroxide and potassium hydroxide can make it corrode and can be salt-resistant And grease, resistant to aliphatic hydrocarbons, insoluble in water, methanol, glycerin, etc., but can absorb alcohol and swell and cause stress cracking. It is not resistant to ketones, chlorinated hydrocarbons and aromatic hydrocarbons. Its solubility parameter is about 18.8 (J/CM3) 1/2, and it can be dissolved in many chlorinated hydrocarbons and aromatic hydrocarbons, such as dichloroethane, trichloroethylene, chloroform, toluene, etc., vinyl acetate and acetone can also make it Dissolve.

Chemical properties of PMMA

Polymethyl methacrylate has good resistance to gases such as ozone and sulfur dioxide.

Weather resistance

Polymethyl methacrylate has excellent atmospheric aging resistance. After 4 years of natural aging test, the sample has a slight decrease in tensile strength and light transmittance, a slight yellowing in color, and a decrease in crazing resistance. Obviously, the impact strength has been slightly improved, and other physical properties have hardly changed.

Combustibility

Polymethyl methacrylate is easy to burn, and its limiting oxygen index is only 17.3.

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