Two-component sealant as well as preparation method and application thereof
A sealant, two-component technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of slow curing of two-component silicone sealant thin layers, and achieve colloidal The curing speed is normal, the preparation method is simple and easy to operate, and the effect of wide application
Pending Publication Date: 2022-06-10
GUANGZHOU JOINTAS CHEM
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Embodiment 1
[0064] In the planetary machine, 100 parts by weight of dimethicone with a viscosity of 12.5Pa s at 25°C, 20 parts by weight of carbon black,
[0065] During use, the component A and the component B are mixed uniformly and defoamed in a weight ratio of 14:1.
Embodiment 2
[0074] When in use, the component A and the component B are mixed uniformly and defoamed in a weight ratio of 14:1.
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Abstract
The invention relates to the field of high polymer materials, in particular to a two-component sealant as well as a preparation method and application thereof. The raw material of the double-component sealant contains a composite cross-linking agent, and the composite cross-linking agent is obtained by mixing a cross-linking agent monomer and a cross-linking agent polycondensate, heating and compounding. The cross-linking agent monomer and the cross-linking agent polycondensate are heated and compounded in advance to obtain the composite cross-linking agent, and the curing speed of the colloid and the hydrolysis speed of the cross-linking agent can be adjusted, so that the normal curing speed of the colloid in a glue line is ensured, and meanwhile, the curing speed of the edge thin-layer colloid is increased.
Description
Two-component sealant and preparation method and application thereof technical field The invention belongs to the field of polymer materials, in particular to two-component sealant and preparation method and application thereof. Background technique Two-component silicone sealant is based on hydroxyl-terminated polydimethylsiloxane, and is combined with cross-linking agent, coupling It is a kind of polymer material which is composed of additives, catalysts, fillers, plasticizers, etc., because of its excellent weather resistance, fast curing speed, Deep curing and other advantages, it is often used as adhesives, sealants and potting agents, etc., in the bonding of glass curtain wall structures, insulating glass two It has been widely used in the fields of road sealing, bonding and potting of electronic appliances, and joint sealing of rail transit. [0003] With the rapid development of adhesive technology, the demand for two-component silicone sealants has further exp...
Claims
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Login to View More IPC IPC(8): C09J183/04C09J11/04C09J11/06C09J11/08
CPCC09J183/04C09J11/04C09J11/06C09J11/08C08K2003/265C08K2201/011C08L83/04C08L83/06C08K5/5419C08K5/5415C08K3/26C08K3/04C08K5/544C08K5/5435
Inventor 刘正伟钱先庆徐文远尤必成
Owner GUANGZHOU JOINTAS CHEM