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铝塑复合板是以塑料为芯层,外贴铝板的三层复合板材。既然板材是多层材料粘结贴合而成,因此复合工艺、粘结剂的种类和质量将直接决定着板材的粘结性能。 复合生产工艺有冷复合和热复合两种。 冷复合是使用常温液体胶类(如聚氨酯类或低分子量环氧树脂类等)在常温或低温(一般不超过80℃)下涂布于板面上,加压贴合。由于此种复合方式的粘结层是在常温或低温下形成,没有经历高湿环境,因此板材的180°剥离强度差,一般仅在3～5N/mm,远低于国际GB/T17748—1999的要求;外墙板7.0N/mm;内墙板5.0N/mm的指标,耐温差性和耐沸水性也达不到
Aluminum-plastic composite board is a plastic core layer, the aluminum plate outside the three-tier composite sheet. Since the sheet is multi-layer material bonded together, so the composite process, the type and quality of the adhesive will directly determine the bonding performance of the sheet. Compound production process has two kinds of cold compound and thermal compound. Cold compound is the use of liquid glue at room temperature (such as polyurethane or low molecular weight epoxy resin, etc.) at room temperature or low temperature (usually not more than 80 ℃) coated on the board, the pressure bonding. Because of this composite bonding layer is formed at room temperature or low temperature, did not experience high humidity environment, so the sheet 180 ° peel strength difference, usually only 3 ~ 5N / mm, well below the international GB / T17748-1999 Of the requirements; exterior wall panels 7.0N / mm; interior wall panels 5.0N / mm index, the temperature difference and resistance to boiling water can not reach