Biodegradable polyester composite catalyst, as well as preparation method and using method thereof

Abstract

The invention relates to the technical field of catalysts for biodegradable polyester and discloses a biodegradable polyester composite catalyst, as well as a preparation method and a using method thereof. The biodegradable polyester composite catalyst comprises the following raw materials in parts by weight: 50-98 parts of organic titanium compound, 1-30 parts of organic silicon compound and 0-10 parts of cocatalyst, and the biodegradable polyester composite catalyst is obtained through the following method: firstly stirring and uniformly mixing the organic titanium compound in the required quantity with the organic silicon compound in the required quantity, and then continuously stirring and uniformly mixing the cocatalyst in the required quality with the organic titanium compound in the required quantity and the organic silicon compound in the required quantity to get the biodegradable polyester composite catalyst. The biodegradable polyester composite catalyst disclosed by the invention has the characteristics of simple preparation process, simplicity and convenience in operation, lower preparation cost and easiness in industrial production, and by adopting the biodegradable polyester composite catalyst obtained in the invention, the reaction time is shortened, and the polyester with good color phase and high molecular weight can be prepared.

Description

technical field [0001] The invention relates to the technical field of preparing biodegradable polyester catalysts, and relates to a biodegradable polyester composite catalyst, a preparation method and a use method thereof. Background technique [0002] Marked by the invention of polyethylene by Karl Ziegler in Germany and polypropylene by Giulio Natta in Italy in the 1950s and 1960s, the plastics industry has begun to develop vigorously. Various plastic products have greatly facilitated and enriched people's lives. But what follows is the "white pollution" brought by traditional plastic products to the human living environment. With the ever-increasing demand for plastic products, the pressure on the human living environment has also intensified. Therefore, it is an urgent requirement to seek materials that are degradable and can replace traditional plastic products, so as to eliminate human's stigma on plastic products. The contradiction between demand and increasingly se...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a biodegradable polyester composite catalyst and its preparation method and use method, which overcomes the above-mentioned deficiencies in the prior art, and can effect