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Automobile noncaking type sealant and preparation method thereof

A non-bonding, sealant technology, applied in the direction of adhesive types, chemical instruments and methods, non-polymer adhesive additives, etc., can solve problems such as being unfavorable to large-scale production, complex processes, etc., and achieve good sealing , the preparation process is simple, the production cost is low

Inactive Publication Date: 2015-01-21
江门好立得实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical scheme is complex and unfavorable for large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1), take by weighing 50 parts of EPDM rubber, 30 parts of polyurethane resin, 2 parts of talcum powder, 1 part of angelica oil, 1 part of paraffin wax, 2 parts of polyethylene glycol, join in the internal mixer, Mix at 120-130°C for 15-20 minutes, then add 1 part of foaming aid, 1 part of cross-linking accelerator, 2 parts of flame retardant, 0.5 parts of anti-yellowing agent and 3 parts of filler in sequence, at 120-130°C Next, mix for 15-20 minutes to form a uniform mixture and set aside;

[0023] (2) Add the mixture prepared in step (1) into a three-roller machine, grind for 2 to 3 times, filter through a filter, vacuumize and defoam for 20 minutes to obtain the product.

[0024] In this embodiment, the foaming aid is stearic acid, the crosslinking accelerator is zinc diethyldithiocarbamate, the filler is calcium carbonate, and the anti-yellowing agent is V76P.

Embodiment 2

[0026] (1), take by weighing 55 parts of EPDM rubber, 33 parts of polyurethane resin, 4 parts of talc powder, 1.2 parts of angelica oil, 1.2 parts of paraffin, 3 parts of polyethylene glycol, join in the internal mixer, Mix at 120-130°C for 15-20 minutes, then add 2 parts of foaming aid, 1 part of cross-linking accelerator, 4 parts of flame retardant, 0.7 parts of anti-yellowing agent and 5 parts of filler in sequence, at 120-130°C Next, mix for 15-20 minutes to form a uniform mixture and set aside;

[0027] (2) Add the mixture prepared in step (1) into a three-roller machine, grind for 2 to 3 times, filter through a filter, vacuumize and defoam for 20 minutes to obtain the product.

[0028] In this embodiment, the foaming aid is polyethylene wax, the crosslinking accelerator is dithiodimorpholine, the filler is calcium carbonate, and the anti-yellowing agent is V76P.

Embodiment 3

[0030] (1), take by weighing 60 parts of EPDM rubber, 35 parts of polyurethane resin, 4 parts of talc powder, 1.4 parts of angelica oil, 1.4 parts of paraffin, 3 parts of polyethylene glycol, join in the internal mixer, Mix for 15-20min at 120-130°C, then add 3 parts of foaming aid, 2 parts of cross-linking accelerator, 6 parts of flame retardant, 1 part of anti-yellowing agent and 7 parts of filler in sequence, at 120-130°C Next, mix for 15-20 minutes to form a uniform mixture and set aside;

[0031] (2) Add the mixture prepared in step (1) into a three-roller machine, grind for 2 to 3 times, filter through a filter, vacuumize and defoam for 20 minutes to obtain the product.

[0032] In this embodiment, the foaming aid is calcium silicate, the crosslinking accelerator is tetramethylthiuram disulfide, the filler is expanded vermiculite, and the anti-yellowing agent is V76P.

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Abstract

The invention provides an automobile noncaking type sealant and a preparation method thereof. The sealant comprises the following compositions: EPDM (Ethylene-Proylene-Diene monomer) rubber, polyurethane resin, talc powder, a foaming assistant, a cross-linking accelerant, an anti-yellowing agent, a filler, angelica oil, paraffin and polyethylene glycol. The preparation method comprises the following steps: weighing EPDM rubber, polyurethane resin, talc powder, angelica oil, paraffin and polyethylene glycol according to a proportion, adding into an internal mixer, blending to form a uniform mixed body for later use; and (2) adding the mixed body prepared in the step (1) into a three-roll machine, grinding for twice to three times, filtering through a filter screen, vacuumizing and defoaming for 20 minutes, thus obtaining the automobile noncaking type sealant. The automobile noncaking type sealant has the advantages of being good in sealing property, strong in adhesive force, flame-retardant and the like, and the method is simple in preparation technology and low in production cost.

Description

technical field [0001] The invention relates to a polymeric material and a preparation method thereof, in particular to a non-adhesive sealant for automobiles and a preparation method thereof. Background technique [0002] In the production and later maintenance of automobiles, most of the joint surfaces will be deformed and damaged to varying degrees after use and disassembly, so the requirements for sealing are very high. Due to the characteristics of pressure resistance, temperature resistance and easy disassembly, sealants have been more and more widely used in order to solve the "three leaks" problem of various sealing parts of automobiles. [0003] At present, there are two types of sealants used in automobiles. One is non-adhesive sealants, which are viscous liquid substances based on polymer compounds. , Stable, continuous adhesive thin-layer peelable film, and can be fully filled into the depressions and gaps on the joint surface; the second type is adhesive sealan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/16C09J175/04C09J11/04C09K3/10
Inventor 翟红波杨振枢韦洪屹
Owner 江门好立得实业有限公司
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