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Method for improving sagging and slipping of automobile coating adhesive by adopting laponite

A coating and sagging technology, applied in the direction of coating, etc., can solve the problems of affecting moisture resistance, poor adhesion, and shedding of rubber materials, and achieve the effects of reducing moisture, increasing viscosity, and increasing viscosity

Active Publication Date: 2022-07-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the montmorillonite used in this technology is modified by octadecylamine hydrochloride, which is a surfactant with strong hygroscopicity, and adding it to the rubber will affect its moisture content. The moisture resistance and adhesion of the state, although the sagging is solved, the deterioration of the adhesion will intensify the slipping, especially when used in the PVC paste resin with poor adhesion, the glue is easy to be removed from the electrophoretic plate fall off

Method used

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  • Method for improving sagging and slipping of automobile coating adhesive by adopting laponite
  • Method for improving sagging and slipping of automobile coating adhesive by adopting laponite
  • Method for improving sagging and slipping of automobile coating adhesive by adopting laponite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Step 1: In parts by mass, add 30 parts of diisobutyl phthalate plasticizer, 30 parts of inorganic calcium carbonate filler, and 0.4 part of laponite XLS into the barrel of the mixer respectively, and mix and stir at a high speed for 30 minutes.

[0050] Step 2: On the basis of Step 1, in parts by mass, continue to add 2 parts of α-pinene terpene resin tackifier, and mix and stir at a high speed for 20 minutes.

[0051] Step 3: On the basis of Step 2, in parts by mass, continue to add 21 parts of PVC resin, and mix and stir at a high speed for 20 minutes.

[0052] Step 4: On the basis of Step 3, vacuum defoaming the obtained PVC coating glue, and then lay the board. When laying the board, choose a hollow inverted "L"-shaped template, the outer length and width of the template is 120 × 70mm, and the inner inverted "L" The size of the type is from large to small: 100×90×50×40×10mm, and the thickness is 5mm.

[0053] Step 5: On the basis of step 4, first place the rubber c...

Embodiment 2

[0057] Step 1: In parts by mass, add 32 parts of diisobutyl phthalate plasticizer, 34 parts of inorganic calcium carbonate filler, and 0.8 part of laponite XLS into the barrel of the mixer respectively, and mix and stir at a high speed for 30 minutes.

[0058] Step 2: On the basis of step 1, in parts by mass, continue to add 1.7 parts of β-pinene terpene resin tackifier, and mix and stir at a high speed for 20 minutes.

[0059] Step 3: On the basis of Step 2, in parts by mass, continue to add 21 parts of PVC resin, and mix and stir at a high speed for 20 minutes.

[0060] Step 4: On the basis of step 3, vacuum degassing the obtained PVC coating glue, and then lay the board. When laying the board, choose a hollow inverted "L" type template, the outer length and width of the template is 120 × 70mm, and the inner inverted "L" The size of the type is from large to small: 100×90×50×40×10mm, and the thickness is 5mm.

[0061] Step 5: On the basis of step 4, first place the rubber c...

Embodiment 3

[0065] Step 1: In parts by mass, add 34 parts of diisobutyl phthalate plasticizer, 32 parts of inorganic calcium carbonate filler, and 1.2 parts of laponite XLS into the barrel of the mixer respectively, and mix and stir at a high speed for 30 minutes.

[0066] Step 2: On the basis of Step 1, in parts by mass, continue to add 2.1 parts of β-pinene terpene resin tackifier, and mix and stir at a high speed for 20 minutes.

[0067] Step 3: On the basis of Step 2, in parts by mass, continue to add 23 parts of PVC resin, and mix and stir at a high speed for 20 minutes.

[0068] Step 4: On the basis of Step 3, vacuum defoaming the obtained PVC coating glue, and then lay the board. When laying the board, choose a hollow inverted "L"-shaped template, the outer length and width of the template is 120 × 70mm, and the inner inverted "L" The size of the type is from large to small: 100×90×50×40×10mm, and the thickness is 5mm.

[0069] Step 5: On the basis of step 4, first place the rubbe...

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Abstract

The invention discloses a method for improving sagging and slipping performance of an automobile coating adhesive by adopting laponite. The automobile coating adhesive is prepared from the following raw materials in parts by mass: 20-30 parts of polyvinyl chloride resin, 30-40 parts of a plasticizer, 30-50 parts of an inorganic filler, 0.4-2 parts of laponite XLS and 1-3 parts of a tackifier. According to the invention, the laponite is selected to replace fumed silica to adjust the viscosity of the coating adhesive, so that the sagging and slipping problems of the coating adhesive in the vertical placement and baking process are well relieved. And the wet film moisture resistance of the coating adhesive can be improved, and the problem of surface blistering in the heating and curing process of the coating adhesive is solved.

Description

technical field [0001] The invention relates to a PVC coating glue, in particular to a method for improving the sagging and slipping of automobile coating glue by using laponite. Background technique [0002] PVC coating adhesive is an adhesive mainly used for the protection of the welding seam between the body sheets and the underbody protection of the body. The rust resistance of the car body. PVC coating glue is a paste-like glue mainly composed of polyvinyl chloride resin, plasticizer, diluent, inorganic filler, tackifier and other additives. After heating and curing, it forms an elastomer with certain bonding ability. . [0003] PVC coating glue is prone to some problems with poor matching with electrophoretic plates during use. Among them, sagging and slipping are one of the most common and prominent phenomena. This defect often causes quality problems and affects the coating qualification rate. The lower the viscosity of the coating, the stronger the fluidity, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/06C09D7/61
CPCC09D127/06C09D7/61C08K2003/265C08K2201/005C08K3/26
Inventor 苏建洲刘平胡建华李艳徐自鹏刘俊邦艾良辉
Owner SOUTH CHINA UNIV OF TECH
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