Pure organosilicone pressure sensitive adhesive and tape

In recent years, the research of high-temperature resistance, insulating pressure-sensitive adhesive, and adhesive tape mainly focuses on the preparation of pure organosilicon pressure-sensitive adhesive and adhesive tape

Because of the high investment, high difficulty, high cost, high coating curing temperature, and long time, and the substrate of adhesive tape needs special treatment, ordinary pressure-sensitive adhesive factory and tape factory is generally difficult to develop and produce.

According to the patent CN107965A, the curing temperature of the high-temperature pressure-sensitive adhesive coating is higher than 150C and the curing time is greater than 180 seconds. The primer is required and the process is complex. Therefore, many manufacturers use modified methods to modify natural rubber pressure-sensitive adhesive, synthetic rubber pressure-sensitive adhesive, natural and synthetic rubber pressure-sensitive adhesive, and acrylic pressure-sensitive adhesive, so as to achieve the high-temperature resistance and insulation properties of pure silicone pressure-sensitive adhesive and tape to replace the application of silicone pressure sensitive adhesive in high temperature and insulation.

According to the CN1152597A patent, the high-temperature pressure-sensitive adhesive is a chloroprene rubber type pressure-sensitive adhesive with heat resistant temperature of 220C and long curing time, and high curing temperature, the process is more complex; Compared with the technical reference of ordinary adhesive tape, its initial strength is low, and it is difficult to replace the application of silicone pressure-sensitive adhesive tape in insulation and high temperature. In accordance with U.S.STRA.3,756,848,1973, U.S.STRA.4,645,71,1987, U.S.STRA.5,385,783,1995 and the Adhesive Application Manual – Adhesive Design and Adhesives (1994 JD-22 and JD-24 tape recorded in 380 pages of the book, the heat resistant temperature is lower than 200C.

Therefore, we need to provide a new preparation method of silicone-modified acrylate high-temperature resistance, insulating pressure-sensitive adhesive, and adhesive tape, the prepared pressure-sensitive adhesive and adhesive tape show improved high-temperature resistance, through the high-temperature aging test at temperatures above 260C. The invention is characterized by a curing temperature of 90C-110C and curing time of 60-90 seconds when preparing adhesive tape by using silicone-modified acrylate with high-temperature resistance and insulating pressure-sensitive adhesive, and the production process is simple and convenient for industrial production.