High-strength single-component room temperature vulcanized silicone rubber

2012 
The invention discloses a high-strength single-component room temperature vulcanized silicone rubber, which belongs to the technical field of single-component room temperature vulcanized silicone rubber sealants, and mainly solves the problem that the tensile strength of organosilicone rubber in the prior art is low (less than 2MPa). The high-strength single-component room temperature vulcanized silicone rubber is mainly characterized by comprising (a) 100 parts of hydroxyl-terminated poly (dimethyl siloxane) polymer; (b) 90-150 parts of a reinforcing filler; (c) 4-10 parts of a thixotropic agent; (d) 15-33 parts of a silicone oil plasticizer; (e) 6-14 parts of a crosslinking agent; (f) 1.7-4 parts of a coupling agent; (g) 0-2.5 parts of a catalyst; and (h) 0.3-3 parts of a pigment. The tensile strength of the high-strength single-component room temperature vulcanized silicone rubber can reach above 3.0MPa, the elongation at break of is greater than 400%, the aluminum sheet, steel sheet adhesion force can reach 2.0Mpa, and the high-strength single-component room temperature vulcanized silicone rubber has the features of being simple in preparation process, low in cost, and easy to use.
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