Normal-temperature solidifiable single-component liquid sealing material
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A sealing material and curing technology, applied in the field of materials, can solve the problems of low reliability of thread sealing, complicated operation process, poor environmental friendliness, etc. Effect
Inactive Publication Date: 2014-03-26
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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Description
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Problems solved by technology
[0002] At present, the joints of metal water pipes or air pipes are generally sealed with paint and hemp silk or PTFE raw material tape. The operation process is complicated, the cost is relatively high, the bonding strength is low, and the reliability of thread sealing is not high. There is a certain amount of VOC (hazardous solvent) released in the process, which is poor in environmental friendliness
Method used
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[0021] Step 2: Add polyvinyl butyral silica and stir well;
[0022] Step 3: After 30 minutes, add materials other than cumene hydroperoxide and stir for 2 hours;
[0023] Step 4: Cool to room temperature, add propylbenzene hydroperoxide, and continue stirring for 30 minutes;
[0024] Step 5: Subpackage after vacuum defoaming.
Embodiment 2
[0026] Polyurethane methacrylic resin, methacrylic acid or acrylic acid, cumene hydroperoxide, acetophenhydrazine, polyvinyl butyral, plastic filler; the mass proportion of each component: polyurethane methacrylic resin accounts for 70%, formazan Hydroxypropyl acrylate 10%, hydroxyethyl methacrylate 2%, cumene hydroperoxide 5%; acrylic acid 5%, fumed silica 1%, cumene hydroperoxide 3%, polyvinyl butyrate Aldehyde 4%, acetylphenylhydrazine 0.2%.
[0027] The preparation process is as follows:
[0028] Step 1: First heat the resin to 60°C;
[0029] Step 2: Add polyvinyl butyral silica and stir well;
[0030] Step 3: After 30 minutes, add materials other than cumene hydroperoxide and stir for 2 hours;
[0031] Step 4: Cool to room temperature, add propylbenzene hydroperoxide, and continue to stir for 30 minutes;
[0032] Step 5: Subpackage after vacuum defoaming.
[0033] Using a metal-induced anaerobic curing system, the material is packaged in one component to achieve stab...
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Abstract
The invention provides a normal-temperature solidifiable single-component liquid sealing material. The normal-temperature solidifiable single-component liquid sealing material comprises methacrylic resin, polyurethane methacrylic resin, methacrylic acid or acrylic acid, isopropyl benzene hydroperoxide, acetylphenylhydrazine, polyvinyl butyral and plastic filler, wherein according to mass proportions, at least one of epoxy methacrylic resin and polyurethane methacrylic resin is selected and accounts for 60%-80%, at least one of hydroxypropyl methacrylate and hydroxyethyl methacrylate is selected and accounts for 10%-40%, isopropyl benzene hydroperoxide accounts for 2%-10%, methacrylic acid or acrylic acid accounts for 1%-8%, fumed silica accounts for 1%-5%, isopropyl benzene hydroperoxide accounts for 1%-10%, polyvinyl butyral accounts for 0%-20%, and acetylphenylhydrazine accounts for 0.02%-0.4%. Compared with analogue materials, the normal-temperature solidifiable single-component liquid sealing material has the advantages that the bonding strength can be adjusted, after being sealed, components can be dismantled, the sealing property of the sealing material is stable, the price of raw materials is low, the storage stability of the sealing material is good, and the production technology of the sealing material is simple.
Description
technical field [0001] The invention relates to a room temperature curable single-component liquid sealing material, which belongs to the field of materials. Background technique [0002] At present, the joints of metal water pipes or air pipes are generally sealed with paint and hemp silk or PTFE raw material tape. The operation process is complicated, the cost is relatively high, the bonding strength is low, and the reliability of thread sealing is not high. There is a certain amount of VOC (hazardous solvent) released in the process, which is poor in environmental friendliness. Contents of the invention [0003] Aiming at the problems existing in the existing products, the invention provides a novel room-temperature curable single-component liquid sealing material with the advantages of environmental friendliness and high sealing reliability. [0004] The technical scheme of the present invention: a room temperature curable single-component liquid sealing material, whi...
Claims
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Application Information
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