The good application of silica sol in coatings (water-based willow weaving paint)
#Industry News ·2025-08-21 17:59:49
China is the world's largest willow textile base, and its main production areas are mainly distributed in the Huang-Huai-Hai region, including Jun 'an County, Hedong County,Linshu County, Tancheng County, Gongxian County, Funan County in Shandong Province, Gushi County in Henan Province, Xiangfan County in Hubei Province, etc. Among them, the export volume of willow weaving handicrafts from Shandong Province accounts for 80% of the national total. Willow weaving products are pure handicrafts, featuring natural fashion and environmental friendliness. They are deeply loved by people all over the world and sell well in Europe, America, Asia and other parts of the world, with consumption increasing day by day. With the enhancement of people's environmental awareness, the requirements for special coatings for willow weaving products are getting higher and higher. Developed countries have strictly limited the content of volatile organic compounds in environmental protection regulations. Currently, low-volatile and zero-VOC coatings are highly favored by consumers. Inorganic materials have the advantages of low pollution, low cost, high hardness, aging resistance, solvent resistance and abundant resources, while they have the disadvantage of poor film-forming property. Therefore, the combined use of inorganic materials and organic materials has the advantages of good adhesion, good water resistance, high air permeability and moisture permeability, and good mechanical properties.
Silica sol is low in cost and can be used in water-based willow varnish to improve product performance. When the content of silica sol is 30 to 40‰, the initial adhesion and high-temperature back adhesion of the primer and topcoat of the willow tree are good, the stain resistance and scrub resistance are good, and the storage stability is excellent. When the dosage of silica sol is 50‰, the varnish has good initial adhesion resistance, high-temperature back adhesion resistance, stain resistance and excellent storage stability. In addition, the pH value is an important factor affecting the stability of the coating. The pH value of the Liushu knitted series products is controlled at around 9. In conclusion, silica sol, as a non-toxic, environmentally friendly and inexpensive inorganic material, will be involved in the application of various fields of coatings.