<<返回上一页

Stuck up

发布时间:2019-03-08 09:16:03来源:未知点击:

A strong, water-resistant glue made from soya beans has emerged as a cheap, less damaging alternative to fume-producing glues derived from petroleum products. Xiuzhi Sun of Kansas State University, Manhattan, chemically modified soya protein so that it partially unfolds, allowing hydrophobic regions to come to the surface of the molecule and make the glue water-resistant. She found that when the glue is used as a wood adhesive the joint is stronger than the wood itself. And after three cycles of soaking for 48 hours and drying for 48 hours,