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Ultraviolet curing in-situ polymerization reworkable water-proof sealant

A technology of waterproof sealing and ultraviolet light, which is applied in the direction of polyurea/polyurethane adhesives, non-polymer organic compound adhesives, adhesives, etc., can solve the problems of less waterproof sealants and no repairs, and achieve bonding The effect of moderate force, easy operation and simple construction process

Inactive Publication Date: 2019-10-22
上海汉司实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN104419011A provides a UV-cured acrylate gasket that forms a non-adhesive surface in situ. This product has good adhesion to a part of the bonding substrate and has a certain sealing effect, but does not mention the repair aspect application
At present, there are still few reports on UV-curable in-situ polymerization reworkable waterproof sealants.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An ultraviolet curing in-situ polymerization repairable waterproof sealant comprises the following raw materials in terms of mass percentage: 55% of acrylate resin prepolymer, 40% of reactive diluent, and 5% of photoinitiator.

[0023] Wherein, the acrylic resin prepolymer is polyurethane acrylate resin prepolymer, polyester acrylate resin prepolymer, epoxy acrylate resin prepolymer, silicone modified acrylate prepolymer, active amine modified Acrylate resin prepolymers are combined in equal proportions.

[0024] The functionality of the resin in the acrylic resin prepolymer is 1.

[0025] The active diluent is an active methacrylate monomer, and the methacrylate monomer is hydroxyethyl acrylate, hydroxyethyl methacrylate, isobornyl acrylate, tetrahydrofuryl acrylate, butyl acrylate, methyl Butyl acrylate, isooctyl acrylate, isodecyl acrylate, triethylene glycol dimethacrylate, alkoxylauryl acrylate, vinyl neodecanoate, N,N-dimethylpropylene Amides are composed in equ...

Embodiment 2

[0028] A UV-curable in-situ polymerization reworkable waterproof sealant, comprising the following raw materials according to mass percentage: 60.8% of polyurethane acrylate prepolymer, 33.8% of isobornyl acrylate, and 1% of 1-hydroxycyclohexyl phenyl ketone , 2,4,6-trimethylbenzoyl diphenylphosphine oxide 1%, talcum powder 3.35%, p-hydroxyanisole 0.05%.

Embodiment 3

[0030] An ultraviolet curing in-situ polymerization reworkable waterproof sealant, comprising the following raw materials according to mass percentage: 64.1% of polyurethane acrylate prepolymer, 7.7% of silicone modified acrylate prepolymer, 5.1% of isobornyl acrylate, N,N-dimethylacrylamide 5.1%, isodecyl acrylate 12.8%, 1-hydroxycyclohexyl phenyl ketone 1.3%, phenyl bis(2,4,6-trimethylbenzoyl) oxidation Phosphine 1.25%, paraffin 0.05%, fumed silica 2.6%.

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Abstract

The invention discloses an ultraviolet curing in-situ polymerization reworkable water-proof sealant and relates to the field of photocuring adhesives. The water-proof sealant comprises the following raw materials: an acrylate resin prepolymer, a reactive diluent, a photoinitiator, filling, a thixotropic agent, wax and a stabilizing agent. The ultraviolet curing in-situ polymerization reworkable water-proof sealant is suitable for various plastic substrates and various irregularly shaped sample pieces and can substitute a silica gel sealing material. At the same time, the ultraviolet curing sealant can be polymerized in situ; a construction process is simple and easy to operate; and full curing can be achieved only within tens of seconds. The cured sealant has moderate adhesive strength tothe substrates and can be reworked easily. After curing, the hardness is Shore A20-80; rupture strength is 2-10Mpa; and breaking elongation is 100-500%.

Description

technical field [0001] The invention relates to the field of light-curing adhesives, in particular to an ultraviolet light-curing in-situ polymerizable reworkable waterproof sealant. Background technique [0002] Silicone waterproof sealing products are widely used in hardware and plastics, HVAC, fire protection, water supply and drainage, ships, pharmaceuticals, piping systems, automobiles, toys, motorcycles, household appliances, electronics, various machinery, sports equipment, pneumatic components And sanitary ware and other fields. This type of silicone sealing material needs to go through a certain preparation process and endow it with a special shape before it can be applied in a specific field. However, for some samples with special shapes, the waterproof and sealing silicone materials of conventional specifications are not suitable, and special customization is required, which will cause cost pressure and waste of time. [0003] At present, many mature low-cost mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J167/06C09J163/10C09J4/06C09J4/02C09K3/10
CPCC09J4/06C09J163/10C09J167/06C09J175/14C09K3/10C08L33/04C08L91/06C08K3/34C08K5/13C08K3/36
Inventor 刘倩林孝蔚吴海平向劲松
Owner 上海汉司实业有限公司
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