Elastic anti-corrosion adhesive, elastic anti-corrosion adhesive tape and preparation method thereof
The present invention discloses an elastic anti-corrosion adhesive, an elastic anti-corrosion adhesive tape and a preparation method thereof, which belongs to the technical field of anti-corrosion adhesive tape materials, comprising: by weight, 5 to 8 parts of elastic rubber, 3 to 5 parts of high molecular weight polyisobutylene, 20 to 35 parts of medium molecular weight polyisobutylene, 5 to 10 parts of elastic fiber, 40 to 60 parts of inorganic powder and 1 to 5 parts of anti-aging agent. The elastic anti-corrosion adhesive provided by the present invention possesses excellent extensibility and resilience. The extensibility thereof allows it to be applied to irregular surfaces, forming a tight bond with the substrate surface, and reducing voids. And the resilience thereof gives the anti-corrosion adhesive self-tightening properties, promoting its penetration into the microscopic surface of the substrate, effectively isolating air and moisture, thereby enhancing its corrosion resistance.
1 . An elastic anti-corrosion adhesive, comprising the following components in parts by weight: 5 to 8 parts of elastic rubber, 3 to 5 parts of first polyisobutylene, 20 to 35 parts of second polyisobutylene different from the first polyisobutylene, and 5 to 10 parts of elastic fiber, 40 to 60 parts of inorganic powder and 1 to 5 parts of anti-aging agent, wherein:
the elastic rubber is a mixture of EPDM rubber and butyl rubber,
the elastic fibers are a mixture of polyolefin elastic fibers and polyester composite elastic fibers, and
the inorganic powder is a mixture of: calcium carbonate, barium sulfate, mica powder, and talc powder.
2 . The elastic anti-corrosion adhesive according to claim 1 , wherein the elastic rubber is the mixture of the EPDM rubber and the butyl rubber in equal proportions.
3 . The elastic anti-corrosion adhesive according to claim 1 , wherein the elastic fibers are the mixture of the polyolefin elastic fibers and the polyester composite elastic fibers in equal proportions.
4 . The elastic anti-corrosion adhesive according to claim 1 , wherein the inorganic powder further comprises: wollastonite powder and kaolin.
5 . A method for preparing the elastic anti-corrosion adhesive according to claim 1 , characterized in that it comprises the following steps:
mixing elastic rubber, first polyisobutylene, second polyisobutylene, elastic fiber, inorganic powder and anti-aging agent at a temperature below 130° C. for 1 to 4 hours to obtain an elastic anti-corrosion adhesive.
6 . An elastic anti-corrosion adhesive tape, characterized in that it comprises: a first elastic anti-corrosion adhesive layer ( 1 ), an elastic reinforcing rib ( 2 ), a second elastic anti-corrosion adhesive layer ( 3 ) and a composite backing layer ( 4 ) arranged in sequence;
wherein the first elastic anti-corrosion adhesive layer ( 1 ) and the second elastic anti-corrosion adhesive layer ( 3 ) are made of the elastic anti-corrosion adhesive according to claim 1 ;
wherein, the elastic reinforcement rib ( 2 ) comprises: a plurality of tows, which are laid between the first elastic anti-corrosion adhesive layer ( 1 ) and the second elastic anti-corrosion adhesive layer ( 3 ) in a parallel and spaced manner along the longitudinal direction of the elastic anti-corrosion adhesive tape;
the tows comprise: polyolefin elastic fiber bundles or polyester composite elastic fiber bundles.
7 . The elastic anti-corrosion adhesive tape according to claim 6 , characterized in that the composite backing layer ( 4 ) comprises: a first backing layer ( 41 ) and a second backing layer ( 42 ), wherein the first backing layer ( 41 ) and the second backing layer ( 42 ) are bonded through an adhesive layer ( 43 ), and the first backing layer ( 41 ) is provided on the side of the second elastic anti-corrosion adhesive layer ( 3 ) away from the side of the first elastic anti-corrosion adhesive layer ( 1 ).
8 . The elastic anti-corrosion adhesive tape according to claim 6 , characterized in that the elastic anti-corrosion adhesive tape further comprises an anti-adhesion isolation layer ( 5 ), and the anti-adhesion isolation layer ( 5 ) is provided on the first elastic anti-corrosion adhesive layer ( 1 ) on the side away from the second elastic anti-corrosion.
9 . The elastic anti-corrosion adhesive according to claim 1 , wherein the inorganic powder is the mixture of the calcium carbonate, the barium sulfate, the mica powder, and the talc powder in equal proportions.