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Seal gum for vehicles and preparation method of seal gum

A technology of sealants and automobiles, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve problems such as difficult to meet immediate sealing performance, and achieve high immediate pressure-resistant sealing performance

Active Publication Date: 2014-09-24
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

However, with the acceleration of production tempo, the sealant is required to have better immediate sealing performance when assembling automobile engine parts, and the existing silicone rubber sealants are difficult to meet the demand for instant sealing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of sealant for automobile, comprising by weight: 20 parts of polysulfide rubber, 3 parts of carbon black, 0.1 part of dibutyl phthalate, 1 part of manganese dioxide, 2 parts of diphenylguanidine, E-20 ring 3 parts of epoxy resin, 0.3 parts of polyethylene polyamine, 1 part of hexamethylenetetramine, 3 parts of F-44 novolak epoxy resin, 0.4 parts of triacetin, 0.2 parts of calcium carbonate, vinyl tributanone 0.1 part of oxime silane, 0.1 part of methyl ethyl ketoxime, 2 parts of barium sulfate, 3 parts of silica sol, 0.32 part of tetraphenylresorcinol diphosphate, 0.5 part of dipentaerythritol, 0.4 part of diatomaceous earth, solvent 10 servings.

[0019] The preparation method of above-mentioned automobile sealant, comprises the following steps:

[0020] Step 1, add polysulfide rubber, dibutyl phthalate and epoxy resin to the solvent, program the temperature to 70°C, increase the temperature to 5°C per hour, stir evenly, and let it cool to obtain the mixture I;...

Embodiment 2

[0025] A sealant for automobiles, comprising in parts by weight: 24 parts of polysulfide rubber, 5 parts of carbon black, 0.3 part of dibutyl phthalate, 2 parts of manganese dioxide, 4 parts of diphenylguanidine, E-20 ring 5 parts of oxygen resin, 0.9 parts of polyethylene polyamine, 2 parts of hexamethylenetetramine, 5 parts of F-44 novolac epoxy resin, 0.7 parts of triacetin, 0.3 parts of calcium carbonate, vinyl tributanone 0.2 part of oxime silane, 0.3 part of methyl ethyl ketoxime, 4 parts of barium sulfate, 5 parts of silica sol, 0.6 part of tetraphenylresorcinol diphosphate, 0.8 part of dipentaerythritol, 0.7 part of diatomaceous earth, solvent 14 servings.

[0026] The preparation method of above-mentioned automobile sealant, comprises the following steps:

[0027] Step 1, add polysulfide rubber, dibutyl phthalate and epoxy resin to the solvent, program the temperature to 90°C, raise the temperature to 5°C per hour, stir evenly, and let it cool to obtain the mixture I...

Embodiment 3

[0032] A sealant for automobiles, comprising in parts by weight: 32 parts of polysulfide rubber, 8 parts of carbon black, 0.6 parts of dibutyl phthalate, 3 parts of manganese dioxide, 7 parts of diphenylguanidine, E-20 ring 5 parts of epoxy resin, 1.8 parts of polyethylene polyamine, 3 parts of hexamethylenetetramine, 8 parts of F-44 novolac epoxy resin, 1.6 parts of glyceryl triacetate, 0.5 parts of calcium carbonate, vinyl tributanone 0.4 parts of oxime silane, 0.3 parts of methyl ethyl ketoxime, 7 parts of barium sulfate, 11 parts of silica sol, 0.9 parts of tetraphenylresorcinol diphosphate, 0.7 parts of dipentaerythritol, 1.3 parts of diatomaceous earth, solvent 16 servings.

[0033] The preparation method of above-mentioned automobile sealant, comprises the following steps:

[0034] Step 1, add polysulfide rubber, dibutyl phthalate and epoxy resin to the solvent, program the temperature to 80°C, increase the temperature to 5°C per hour, stir evenly, and let it cool to o...

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PUM

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Abstract

The invention relates to seal gum for vehicles and a preparation method of the seal gum. The seal gum comprises polysulfide rubber, carbon black, dibutyl phthalate, manganese dioxide, diphenylguanidine, epoxy resin, polyethylene polyamine, hexamethylenetetramine, novolac epoxy resin, glycerol triacetate, calcium carbonate, vinyltris(methylethylketoximino)silane, methyl ethyl ketoxime, barium sulfate, silica sol, a phosphate flame retardant, dipentaerythritol, diatomite and a solvent. The preparation method comprises the following steps: adding the polysulfide rubber, dibutyl phthalate and the epoxy resin into the solvent and stirring; adding vinyltris(methylethylketoximino)silane, methyl ethyl ketoxime, barium sulfate, silica sol and the phosphate flame retardant and stirring; adding manganese dioxide, diphenylguanidine, the epoxy resin, polyethylene polyamine, hexamethylenetetramine and the novolac epoxy resin and stirring; adding the rest components and stirring to be uniform to obtain the seal gum. The seal gum is relatively good in instant pressure-resistant seal property and can be applied to a fast-paced production and preparation process.

Description

technical field [0001] The invention belongs to the technical field of sealing materials, and in particular relates to a sealant for automobiles and a preparation method thereof. Background technique [0002] Sealant is an adhesive used to fill the configuration gap to play a sealing role. It has the functions of anti-leakage, waterproof, anti-vibration, sound insulation and heat insulation. Sealants are widely used in the field of automobile manufacturing, which can simplify the production process, save materials, and enhance the strength of components, especially in shockproof heat insulation, anti-corrosion, anti-rust, leak-proof, anti-loosening, noise reduction, self-weight reduction, comfort and safety, etc. It has a special role and has become an indispensable material in automobile production. Sealant can be applied to different parts of the car, especially the most common one is applied to the engine of the car to solve the problems of water leakage, oil leakage and...

Claims

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Application Information

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IPC IPC(8): C09J181/04C09J11/08C09J11/04C09K3/10
Inventor 潘琳肖运根过俊宏
Owner 上海汉司实业有限公司
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