Study On Preparation Of Coatings From The Renewable Plant Resources

In recent years, the use of plant oil as substitute for petrochemicals completely or partly have been developed in paint industry. This is because of the people's attention to friendly paint and the increased demand for it, and the volatilization of the organic matter and the discharge of the waste in the paint production.By the development of organic chemistry and paint physical chemistry knowledge, the difficulties in plant production is tackled gradually, thus the performance of paint product using plant oil material is improved greatly.The studies in the thesis are summarized as follows:(1) This study concerns on a new technology on preparation of alkyd industrial primer paint with tall oil obtained from waste fluid in papermaking. The tall oil from waste fluid in papermaking, first purified by reduced pressure distillation, then some composite additives were added. After reaction, industrial primer paint with good quality has been obtained. Mechanical properties and appearance of the cast film formed by this paint mainly depend on the addition of alkyd and industrial primer paint, as well as the esterization temperature. The product with good appearance has been acquired, with the drying period ≤ 10h. No changes will occur under 24h resistant tests with water. The product prepared in this way is in good performance, with other features as simple, economy and environmental friendly.(2) In this paper, rice bran oil, tung oil, epoxy resin and iron oxide red were used to prepare epoxy priming paint of iron oxide red. Mechanical properties and appearance of the cast film formed by this paint mainly depend on the addition of epoxy ester and priming paint of iron oxide red, as well as the...