利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN107151298A 苹果木E0级中密度纤维板的改性脲醛胶及其制备方法 无效 - 驳回

苹果木E0级中密度纤维板的改性脲醛胶及其制备方法
摘要：
本发明公开了一种苹果木E0级中密度纤维板改性脲醛胶，由甲醛、尿素、聚乙烯醇、三聚氰胺、三乙醇胺、甲酸、氢氧化钠制成，工艺采用碱‑酸‑酸‑碱式多次缩聚工艺。本发明的改性脲醛胶通过改进脲醛胶合成工艺，调整摩尔比、反应时间，采用低温工艺多次缩聚，增加胶水的初粘性和交织性能，使用时配用自制的消醛剂等工艺方法，使改性的脲醛胶完全达到了生产E0级纤维板的要求，降低了有害物，提高了产品质量和效益。
摘要（英）：

The invention discloses modified urea-formaldehyde adhesive for applewood level E0 medium-density fiberboards, prepared from formaldehyde, urea, polyvinyl alcohol, melamine, triethanolamine, formic acid and sodium hydroxide by means of alkali-acid-acid-alkali multiple condensation process. The modified urea-formaldehyde adhesive has the advantages that a modified synthetic process of urea-formaldehyde adhesive is utilized, the molar ratio and reaction time are adjusted, low-temperature multiple condensation is employed, initial adhesion and interweaving of the adhesive are increased, preparation of self-made formaldehyde removers and other techniques are utilized during use, the modified urea-formaldehyde adhesive fully meets the requirements for the production of level E0 fiberboards, the content of harmful substances is decreased, and product quality and benefit are increased.

0/0