Primer coating for single-component room-temperature vulcanized silicone rubber and preparation method thereof
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A technology of room temperature vulcanization and silicone rubber, which is applied in the direction of coating to achieve the effect of enhancing adhesion
Active Publication Date: 2013-07-24
SHENZHEN XINYA NEW MATERIALS CO LTD
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Abstract
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Problems solved by technology
[0003] The primers in the prior art are still unsatisfactory in improving the adhesion of one-component room tempe
Method used
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Embodiment 1
[0020] A primer for one-component room temperature vulcanized silicone rubber, the formulation of which is as follows:
[0021] Table 1: Formula composition of primer
[0022]
[0023]
[0024] The corresponding preparation method is:
[0025] Step 1: Put all the raw materials except essence into the stirring tank, and stir at room temperature for 30-60 minutes to disperse them evenly;
[0026] Step 2: Add essence and stir at room temperature for 10-20 minutes to disperse evenly;
[0027] The third step: filter the solution to obtain the finished product.
Embodiment 2
[0029] A primer for one-component room temperature vulcanized silicone rubber, the formulation of which is as follows:
[0030] Table 2: Formula composition of primer
[0031]
[0032] The corresponding preparation method is:
[0033] Step 1: Put all the raw materials except essence into the stirring tank, and stir at room temperature for 30-60 minutes to disperse them evenly;
[0034] Step 2: Add essence and stir at room temperature for 10-20 minutes to disperse evenly;
[0035] The third step: filter the solution to obtain the finished product.
Embodiment 3
[0037] A primer for one-component room temperature vulcanized silicone rubber, the formulation of which is as follows:
[0038] Table 3: Formula composition of primer
[0039]
[0040] The corresponding preparation method is:
[0041] Step 1: Put all the raw materials except essence into the stirring tank, and stir at room temperature for 30-60 minutes to disperse them evenly;
[0042] Step 2: Add essence and stir at room temperature for 10-20 minutes to disperse evenly;
[0043] The third step: filter the solution to obtain the finished product.
[0044] For the primer prepared in the embodiment of the present invention, the primer is directly coated on the substrate to be bonded, and the sizing process can be performed after 20 seconds to 45 seconds.
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Abstract
The invention discloses a primer coating for single-component room-temperature vulcanized silicone rubber. The primer coating is composed of the following components: A, 0.01-20 parts by weight of at least one of the following materials: polysiloxane, silane coupling agent, silicate ester, titanate and silicon resin; B, 10.00-85.00 parts by weight of organic solvent; and C, 0.01-1.20 parts by weight of essence. The preparation method of the primer coating for the single-component room-temperature vulcanized silicone rubber comprises the following steps of: A) evenly mixing the component A with the component C; 2) adding the component B and evenly mixing the mixture; and 3) filtering. The primer coating provided by the invention is directly applied to a substrate to be bonded in use and the process of applying glue can be performed in 20-45 seconds. The primer coating prepared by the method provided by the invention is capable of achieving the 100% cohesive failure of the single-component room-temperature vulcanized silicone rubber when the single-component room-temperature vulcanized silicone rubber is bonded with a plurality of kinds of surfaces; and as a result, the adhesion of the substrate with the single-component room-temperature vulcanized silicone rubber is enhanced.
Description
technical field [0001] The invention relates to a primer for one-component room temperature vulcanized silicone rubber. Background technique [0002] The vulcanization reaction of one-component RTV silicone rubber is to vulcanize into an elastomer by reacting with moisture in the air. The vulcanization reaction proceeds gradually from the surface to the depth, the thicker the glue layer, the slower the curing. The vulcanization time of one-component room temperature vulcanized silicone rubber depends on the vulcanization system, temperature, humidity and the thickness of the silicone rubber layer. Increasing the temperature and humidity of the environment can speed up the vulcanization process. One-component room temperature vulcanized silicone rubber does not absorb or release heat during curing, has a small shrinkage rate after curing, and has good adhesion to materials. Therefore, it is mainly used as an adhesive and sealant, but other applications include form-in-place...
Claims
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Application Information
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