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一种人造板用生物油淀粉胶粘剂及其制备方法

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项目单位

北京林业大学

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成果概况

本发明涉及一种人造板用生物油淀粉胶粘剂,属于人造板胶粘剂技术领域,该胶粘剂采用复合变性方法对淀粉进行变性处理,先加入盐酸和氧化剂对淀粉进行酸解氧化变性,降低淀粉分子量,提高其反应活性;再加入稳定剂和采用丙烯酰胺接枝单体,形成胶粘剂主剂的基本骨架结构;再加入生物油,利用生物油中的酸、醛物质对骨架结构中化学基团进行修饰,得到胶粘剂主剂;最后加入由二元醛和异氰酸酯组成的固化剂和填充剂制成生物油淀粉胶粘剂。本发明具有绿色环保、成本低、胶接性能好、粘度低、适用期长、制备工艺简单的诸多特点,可替代目前在人造板领域广泛使用的脲醛树脂,彻底解决人造板制品较为严重的甲醛污染问题。


专利情况

The invention relates to a bio-oil starch adhesive used for an artificial board, which belongs to the artificial board adhesive technical field. In a preparation method of the adhesive, a composite denaturation method is employed for performing denaturation treatment on starch, hydrochloric acid and an oxidizing agent are added for acidolysis and oxidation denaturation on the starch, the starch molecular weight is reduced, the reaction activity is enhanced; a stabilizing agent is added, an acrylamide grafting monomer is employed to form a basic frame structure of an main agent of the adhesive; the bio-oil is added, the acid and an aldehyde substance in the bio-oil is used for modifying a chemical group in the frame structure to obtain the main agent of the adhesive; and a curing agent composed of dialdehyde and isocyanate as well as a filler are added to prepare the bio-oil starch adhesive. The bio-oil starch adhesive used for artificial board has the characteristics of green environmental protection, low cost, good glued joint performance, low viscosity, long working life and simple preparation technology, and can replace urea resin widely used in the current artificial board field and thoroughly solve the severe formaldehyde pollution problem of the artificial board product.


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