A kind of seps weather-resistant building waterproof sealant and preparation method thereof
A construction waterproof and sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of weak adhesion, unenvironmental protection, curing failure, etc. Elasticity and excellent weather resistance
Active Publication Date: 2016-07-06
大禹九鼎新材料科技有限公司
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Problems solved by technology
The production process of polyurethane sealant is complicated, the equipment requirements are high, and the investment is large. Moreover, due to the principle of moisture curing, the storage stability of polyurethane sealant is poor. If the airtightness is not strict or the temperature is slightly high, it is easy to cure and fail.
Polyurethane sealants have weak adhesion to vinyl materials such as PVC, EVA, PE and other common building materials, and the bonding strength often does not meet the requirements
In addition, because the residual isocyanate of polyurethane sealant is harmful to the human body, it is not environmentally friendly and has poor weather resistance.
Silicone rubber sealant has a wide range of applications, but silicone rubber sealant will release acetic acid when it is cured. Acetic acid not only has a strong pungent odor, pollutes the air, but also has a corrosive effect on metals. sticky function
Method used
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preparation example Construction
[0029] A preparation method of SEPS weather-resistant building waterproof sealant, the steps are as follows:
[0030] 1) Add solvent, coupling agent and UV absorber to the mixer, then add anti-aging agent, tackifier and SEPS resin, and stir until the SEPS resin is completely dissolved;
[0031] 2) Add the superfine filler into the mixer in 3-6 batches, and stir evenly;
[0032] 3) Then add thixotropic agent and thickener, and stir well.
Embodiment 1
[0035] A kind of SEPS weather-resistant building waterproof sealant, its formula composition is as follows:
[0036] Table 1:
[0037]
Embodiment 2
[0039] A kind of SEPS weather-resistant building waterproof sealant, its formula composition is as follows:
[0040] Table 2:
[0041]
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The invention discloses a SEPS weather-resistant building waterproof sealant, which is characterized in that it is composed of the following raw materials in mass percentage: 20-25% of SEPS, 30-35% of solvent, and 0.05-0.2% of coupling agent , 0.2-0.5% UV absorber, 1-3% anti-aging agent, 19.3-24.7% tackifier, 12-23% ultrafine filler, 1-1.5% thixotropic agent, 1.25-4% thickener. Its preparation method, the steps are: 1) add solvent, coupling agent, UV absorber to the mixer, then add anti-aging agent, tackifier, SEPS resin, stir until the SEPS resin is completely dissolved; 2) put the superfine filler in batches Add it to the mixer one at a time, and stir evenly; 3) Then add the thixotropic agent and thickener, and stir evenly. The sealant of the invention has better performance.
Description
technical field [0001] The invention relates to a SEPS weather-resistant building waterproof sealant and a preparation method thereof. Background technique [0002] At present, most of the building sealants commonly used at home and abroad are polyurethane sealants and silicone rubber sealants. The production process of polyurethane sealant is complicated, the equipment requirements are high, and the investment is large. Moreover, due to the use of moisture curing principle, the storage stability of polyurethane sealant is poor. If the airtightness is not strict or the temperature is slightly high, it is easy to cure and fail. Polyurethane sealants have weak adhesion to vinyl materials such as PVC, EVA, PE and other common building materials, and the bonding strength often fails to meet the requirements. In addition, because the residual isocyanate of polyurethane sealant is harmful to human body, it is not environmentally friendly and has poor weather resistance. Silicone...
Claims
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IPC IPC(8): C09J153/02C09J11/04C09J11/06C09J11/08
Inventor 周义
Owner 大禹九鼎新材料科技有限公司