一家国外公司最近开发出一种淀粉基处理剂,可以用于处理玻璃纤维屋面织物。这种处理剂虽然以淀粉为主要组分,但其耐水性和疏水性能很优良。 这种淀粉基处理剂含有60％～95％淀粉,19％疏水剂,6％金属盐和2.5％柠檬酸。所用的金属盐是元素周期表中3a,3b,4a,4b,5a或5b族金属的盐类。疏水剂虽然可以使用油或石 A foreign company has recently developed a starch-based treatment agent that can be used to treat fiberglass roofing fabrics. Although this treatment agent is mainly composed of starch, its water resistance and hydrophobic properties are excellent. This starch-based treatment contains 60% to 95% starch, 19% hydrophobic agent, 6% metal salt, and 2.5% citric acid. The metal salt used is a salt of a metal of the 3a, 3b, 4a, 4b, 5a or 5b group of the periodic table. Although water repellents can use oil or stone