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Anticorrosive sealant for hems in automobile manufacturing

A technology of automobile manufacturing and sealant, applied in the field of material science, can solve the problems of steel plate deformation, low viscosity of sealant, easy dissolution and loss, etc., and achieve the effect of low internal stress, good toughness of cured product, and low cost

Inactive Publication Date: 2015-02-04
三友(天津)高分子技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that ordinary sealant has low viscosity, is easy to dissolve and lose when subjected to the pre-treatment of the automobile manufacturing process, and causes stress concentration to cause deformation of the steel plate, and provides an environmentally friendly, good sealing, rust-proof, A low-stress anti-corrosion sealant for the folded edge in automobile manufacturing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] Its composition of example 1 is made up of following weight percent:

[0039] Bisphenol A type low molecular weight epoxy resin E51 12.5%

[0040] Novolak epoxy F-51 3.4%

[0041] PVC Paste Resin 7%

[0042] PVC blend resin 3%

[0043] Liquid polybutadiene 5%

[0044] Butadiene rubber 4%

[0045] Diisononyl Phthalate 8%

[0046] Dioctyl Adipate 1%

[0047] Dicyandiamide 1.25%

[0048] Sulfur 0.7%

[0049] Accelerator DM 0.7%

[0050] Accelerator TMTD 0.29%

[0051] N-(3,4-dichlorophenyl)-N',N'-dimethylurea 0.5%

[0052] Benzotriazole 0.5%

[0053] Fumed silica 2%

[0054] Carbon black 0.16%

[0055] Nano calcium carbonate 30%

[0056]Precipitate barium sulfate 20%.

example 2

[0057] Its composition of example 2 is made up of following weight percent:

[0058] Polyether epoxy resin 4000S 14%

[0059] Polyurethane epoxy resin EPU-73S 6%

[0060] PVC Paste Resin 5%

[0061] Polyvinyl chloride-vinyl acetate copolymer paste resin (8% vinyl acetate content) 5%

[0062] Nitrile rubber 7%

[0063] Dioctyl phthalate 5%

[0064] Diisodecyl phthalate 3%

[0065] Dioctyl Sebacate 2%

[0066] Dicyandiamide 2.0%

[0067] 40B 0.7%

[0068] 4,4'methylene-bis(phenyldimethylurea) 0.6%

[0069] Accelerator PZ 0.3%

[0070] Butylparaben 1%

[0071] Organic bentonite 2%

[0072] Rubber reinforcing agent A69 3.4%

[0073] Iron Oxide Black 10%

[0074] Aluminum hydroxide 10

[0075] Nano Calcium Carbonate 23%.

example 3

[0076] Its composition of example 3 is made up of following weight percent:

[0077] Bisphenol A medium molecular weight epoxy E-44 20%

[0078] PVC Paste Resin 10%

[0079] Polyvinyl chloride-vinyl acetate copolymer blended resin (8% vinyl acetate content) 2%

[0080] SBR 6%

[0081] Butyl benzyl phthalate 5%

[0082] Dioctyl phthalate 4%

[0083] Dioctyl Adipate 1%

[0084] Sebacic acid dihydrazide 2%

[0085] DCP 0.6%

[0086] Accelerator CZ 0.4%

[0087] Sodium Benzoate 1%

[0088] Hydrogenated Castor Oil 4%

[0089] Diatomaceous earth 4%

[0090] Nano Calcium Carbonate 22%

[0091] Glass fiber powder 8%

[0092] Ground calcium carbonate 10%

[0093] a. Plasticizing the synthetic rubber in the above-mentioned materials in the internal mixer for 10 minutes, adding a plasticizer and a filler therein, and mixing in the internal mixer for 10 minutes to obtain the rubber compound;

[0094] b. After mixing the epoxy resin, thermoplastic resin, latent curing agent,...

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Abstract

The invention relates to an anticorrosive sealant for hems in automobile manufacturing, particularly an anticorrosive sealants for hems of car doors, boot lids, hood shields and the like in the automobile manufacturing process, which has the functions of sealing, corrosion resistance and rust prevention. The anticorrosive sealant is a composition composed of an epoxy resin, a thermoplastic resin, synthetic rubber, a plasticizer, a latent curing agent, a vulcanizing agent, an accelerator, a preservative, a thixotropic agent and a filler. The sealant has the advantages of simple preparation technique, identical curing temperature and automobile production pipeline temperature, high storage stability, high toughness of the curing product, low cost and environmental protection. When being used for sealing, rust prevention and corrosion resistance of hems of car doors, boot lids, hood shields and the like, the sealant can greatly enhance the overall reliability and durability of the automobile. When in use, the sealant can be directly coated on the edge in need of sealing by an automatic coater or pressure spray gun, has the advantages of higher peel strength and lower internal stress, and is convenient to use.

Description

technical field [0001] The invention relates to an adhesive material and belongs to the technical field of material science. In particular, it relates to an anti-corrosion sealant for folds in automobile manufacturing, which is an anti-corrosion sealant used in the folds of doors, trunk lids, engine covers, etc. in the process of automobile manufacturing, and plays the role of sealing, anti-corrosion and anti-rust. Background technique [0002] The anti-corrosion sealant used in the folding of the automobile is widely used in the automobile manufacturing industry because of its advantages of simple construction and excellent performance of the cured product. In the sealing of the hem during the processing of the door by the automobile main engine factory or the door accessories factory, the sealant not only plays a sealing role, but also plays the role of antirust and anticorrosion. With the continuous development of the automobile industry, it is required that the sealant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J127/06C09J109/02C09J109/06C09J109/00C09J111/00C09J11/06C09J11/04
Inventor 高之香李远光李士学李建武王永明张卫军石震鹏
Owner 三友(天津)高分子技术有限公司
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