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Low-expansion automobile spot welding sealant

A sealant, intumescent technology, used in adhesives, film/flake adhesives, etc., can solve the problems of poor oil resistance and heat resistance, unstable welding, etc., to ensure sealing performance, simple structure, automotive Stable spot welding effect

Pending Publication Date: 2018-06-01
浙江普利斐特汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-expansion automotive spot welding sealant to solve the problems of unstable welding and poor acid resistance, oil resistance and heat resistance proposed in the above-mentioned background technology

Method used

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  • Low-expansion automobile spot welding sealant

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] see Figure 1-3 , the present invention provides a technical solution:

[0021] A low-expansion sealant for automotive spot welding, comprising a sealing film 1, the thickness of the sealing film 1 is 0.1mm to 0.5mm, preferably 0.1mm in this embodiment, the sealing film 1 is a polypropylene resin material, and the polypropylene resin is A thermoplastic resin prepared by the polymerization of propylene, due to its regular structure and high crystallizat...

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Abstract

The invention relates to the technical field of automobile spot welding and especially provides a low-expansion automobile spot welding sealant. The spot welding sealant includes a seal film. An acid-resistant layer is arranged on the upper side of the seal film. An anti-oil layer is arranged on the surface of one side, which is far away from the seal film, of the acid-resistant layer. An anti-corrosion layer is arranged on the surface of one side, which is far away from the acid-resistant layer, of the anti-oil layer. A heat-resistant film is arranged on the surface of one side, which is faraway from the anti-oil layer, of the anti-corrosion layer. The spot welding sealant has simple structure and is convenient to use, by means of the seal film, the sealing performance of the sealant isguaranteed during an adhesive application process, so that automobile spot welding has more stable effects; by means of the acid-resistant layer, anti-oil layer and anti-corrosion layer, the sealant has performances of acid resistance, oil resistance and heat resistance, so that spot welding effect of the sealant in automobile spot welding is greatly enhanced. The spot welding sealant has great practicability and is convenient to promote.

Description

technical field [0001] The invention relates to the technical field of automobile spot welding, in particular to a low-expansion sealant for automobile spot welding. Background technique [0002] Spot welding refers to a welding method in which a columnar electrode is used to form a solder joint between the contact surfaces of two overlapping workpieces during welding. During spot welding, pressurize first to make the workpieces in close contact, and then turn on the current. Under the action of resistance heat, the contact parts of the workpieces melt and form solder joints after cooling. Spot welding is mainly used for the welding of stamping parts of thin plate members with a thickness of less than 4mm. It is especially suitable for the welding of automobile bodies, compartments, and aircraft fuselages, but it cannot weld containers with sealing requirements. [0003] Spot welding sealants are required for spot welding of automobiles. There are many types of spot welding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29
Inventor 黄利群张建徐争勇许迪张翼飞
Owner 浙江普利斐特汽车科技有限公司
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