Automobile sealant, preparation method and use method thereof

A sealant, automotive technology, applied in the directions of adhesives, coatings, adhesive additives, etc., can solve the problems of affecting the appearance performance of the car body, long time for car body production, low production efficiency, etc. The effect of improving production efficiency

Active Publication Date: 2021-03-02
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional sealants are based on polyvinyl chloride, combined with figure 1 , the use of sealant must adopt the following process: electrophoresis treatment→drying→coating sealant→coating anti-stone impact coating→wiping treatment→sealant drying→grinding→water-based paint spraying→water-based paint pre-baking→varnish spraying →Topcoat drying→finishing. From the above, it can be known that the traditional sealant must be dried before the paint can be applied, which will lead to long body production time and low production efficiency.
If the water-based color paint is sprayed directly without drying the sealant, although the production efficiency can be improved, it will cause the treated car body to lose gloss, which will affect the appearance of the car body

Method used

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  • Automobile sealant, preparation method and use method thereof
  • Automobile sealant, preparation method and use method thereof
  • Automobile sealant, preparation method and use method thereof

Examples

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Embodiment approach

[0055] As an implementation manner of the embodiment of the present invention, the raw material of the sealant further includes 2-5 parts by weight of additives. Additives are used to adjust the finished state of automotive sealants and to assist other components in film formation. The auxiliary agent may include at least one of a thixotropic agent and a tackifier, wherein the thixotropic agent may be fumed silica, and the tackifier may be polyamide resin.

[0056] In the second aspect, the embodiment of the present invention provides the above-mentioned method for preparing an automobile sealant, wherein the method comprises:

[0057] The automobile sealant is prepared by mixing the raw materials of the automobile sealant, and the raw material of the automobile sealant includes the following components in parts by weight: benzene disulfonate: 14-18 parts; diisononyl phthalate: 12-16 parts; isoparaffin solvent: 2.5-3.5 parts; filler: 19-21 parts; PVC resin: 42-45 parts.

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Embodiment 1

[0070] Embodiment 1 provides an automobile sealant and its application method. The raw materials of the sealant are composed of the components shown in Table 1.

[0071] How to use automotive sealant, combined with figure 2 ,details as follows:

[0072] (1) On the painting production line of a certain vehicle factory, the body-in-white to be sprayed is dried after electrophoresis treatment, and then the body is polished, cleaned and repainted;

[0073] (2) Apply sealant to the welded seam of the car door and the welded seam of the bottom of the car after the above-mentioned process, and then apply the anti-stone chip coating; 5mm*3mm, 10mm*5mm, 10mm*1mm

[0074] (3) Wipe the body after the above process, and use alcohol to wipe the residual glue, glue traces, offset printing, oil stains, etc. on the outer surface;

[0075] (4) The body after the (3) process is transported to the spray booth for water-based color paint spraying. Color paint BC1 and BC2 are sprayed by robot...

Embodiment 2

[0080] Embodiment 2 provides an automobile sealant and its application method. The raw materials of the sealant consist of the components shown in Table 1.

[0081] How to use automotive sealant, combined with image 3 ,details as follows:

[0082] On the painting production line of a certain vehicle factory, the body-in-white to be painted is dried after electrophoresis treatment, and then the body is polished, cleaned and repainted;

[0083] (2) Apply sealant to the welded seam of the car door and the welded seam of the bottom of the car after the above-mentioned process, and then apply the anti-stone chip coating; 5mm*3mm, 10mm*5mm, 10mm*1mm

[0084] (3) Wipe the body after the above process, and use alcohol to wipe the residual glue, glue traces, offset printing, oil stains, etc. on the outer surface;

[0085] (4) The body after the (3) process is transported to the spray booth for water-based color paint spraying. Color paint BC1 and BC2 are sprayed by robots on the o...

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Abstract

The invention belongs to the technical field of automobile sealants, and particularly relates to an automobile sealant, a preparation method and a use method thereof. The raw materials of the sealantcomprise the following components by weight: 14-18 parts of benzene disulfonate; 12-16 parts of diisononyl phthalate; 2.5-3.5 parts of a solvent; 19-21 parts of filler; and 42-45 parts of PVC resin. By adopting the automobile sealant provided by the invention, wet-on-wet process treatment is realized, an automobile body has no gloss loss defect, the sealant drying procedure is omitted, the production efficiency is improved, the production cost and the carbon dioxide emission of a production line are reduced, and the automobile sealant is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of automobile sealants, in particular to an automobile sealant and its preparation method and use method. Background technique [0002] Automotive sealant is a polyvinyl chloride-based automotive paint sealant, which is divided into two types: colorable and non-colorable. Its main function is to keep the entire car body sealed and to isolate moisture, dust and smog from the outside. In addition, this kind of sealant also has the functions of anti-corrosion, sound insulation, and beautification of vehicle models. The paintable sealant can be applied in low-temperature and high-temperature paint baking processes, and can be applied to seal visible gaps on the outside without itself contaminating the dried topcoat. Non-pigmented sealant can be used to fill the gaps inside the car body, or to paint on the chassis of the car body for anti-corrosion. [0003] Traditional sealants are based on polyvinyl chloride...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J127/06C09J11/04C09J11/06B05D7/24B05D7/26
CPCC09J127/06C09J11/04C09J11/06B05D7/24B05D7/26B05D7/577C08K2003/265C08K13/06C08K9/04C08K3/26C08K5/12C08K5/42
Inventor 苏军王永炜李庆华王文文李啸
Owner DONGFENG MOTOR CORP HUBEI
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