Coating material for improving low temperature explosion performance of PVC slush molded skin, and spraying method thereof

A coating material and skin technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve problems such as unsatisfactory spraying effect, skin cracking, construction difficulties, etc., to reduce design constraints, solve chipping, spraying temperature Wide range of effects

Active Publication Date: 2017-11-03
CHANGCHUN FAWAY ADIENT AUTOMOTIVE SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a coating material that improves the low-temperature blasting performance of PVC slush-plastic skin, and solves the difficulty in construction when the existing polyurethane is sprayed on the PVC skin, the spraying effect is not ideal, and the skin is still broken in low-temperature blasting problem

Method used

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  • Coating material for improving low temperature explosion performance of PVC slush molded skin, and spraying method thereof
  • Coating material for improving low temperature explosion performance of PVC slush molded skin, and spraying method thereof
  • Coating material for improving low temperature explosion performance of PVC slush molded skin, and spraying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Coating material ratio: water-based polyurethane 85 wt%, color paste wt 5%, film-forming aid (dipropylene glycol methyl ether) wt4%, defoamer (water-based molecular grade defoamer) 0.2 wt%, wetting agent ( Alkyne diol ethoxylate) 0.4 wt%, thickener (water-based polyurethane thickener) 0.4 wt%, and the rest is water.

[0044] Coating preparation method:

[0045] Step 1. Add 50 grams of color paste to 850 grams of pure water-based polyurethane paint (APU-390), stir and mix well;

[0046] Step 2. Mix 40 grams of film-forming aids and 50 grams of water into the system of step 1, stir and mix well.

[0047] Step 3. Add 2 grams of defoamer to the system in step 2, stir and mix well.

[0048] Step 4. Add 4 grams of wetting agent to the system in step 3, and mix well.

[0049] Step 5. Add 4 grams of thickener to the system in step 4, stir and mix well.

[0050] Step 6. Take an appropriate amount of the compounded paint and add it to the spray gun for use.

[0051] Spraying...

Embodiment 2

[0055] Coating material ratio: water-based polyurethane 78 wt%, color paste wt 14%, matting powder 0.5%, film-forming aid (dipropylene glycol methyl ether) wt3.8%, defoamer (water-based molecular grade defoamer) 0.18 wt %, wetting agent (alkyne glycol ethoxylate) 0.37 wt %, thickener (water-based polyurethane thickener) 0.37 wt %, and the rest is water.

[0056] Coating preparation method:

[0057] Step 1. Add 140 grams of color paste to 780 grams of pure water-based polyurethane paint (APU-390), stir and mix well;

[0058] Step 2. Add 5 grams of matting powder to the system in step 1, and mix well.

[0059] Step 3. Mix 38 grams of film-forming aids and 27.8 grams of water into the system of step 2, stir and mix evenly.

[0060] Step 4. Add 1.8 grams of defoamer to the system in step 3, stir and mix evenly.

[0061]Step 5. Add 3.7 grams of wetting agent to the system in step 4, stir and mix well.

[0062] Step 6. Add 3.7 grams of thickener to the system in step 5, stir and...

Embodiment 3

[0068] Coating material ratio: water-based polyurethane 86.5 wt %, color paste 5 wt %, coalescent (dipropylene glycol methyl ether) 4 wt %, defoamer (water-based molecular grade defoamer) 0.35 wt %, wetting agent (Alkyne glycol ethoxylate) 0.4 wt %, thickener 0.4 (Alkyne glycol ethoxylate) wt %, and the rest is water.

[0069] Coating preparation method:

[0070] Referring to Example 1.

[0071] Spraying molding method of coating material on PVC skin:

[0072] Referring to Example 1.

[0073] Results: The coating material is sprayed smoothly, the thickness of the film is uniform, the high and low temperature blasting results are qualified, the skin has no cracks and splashes, and the low temperature blasting performance of the PVC skin is significantly improved (results see Figure 5 , Figure 6 ).

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Abstract

The invention relates to a coating material for improving the low temperature explosion performance of a PVC slush molded skin, and a spraying method thereof. The coating material comprises 70-87% of aqueous polyurethane, 5-20% of a color paste, 0.5-6% of a film forming assistant, 0.05-0.5% of an antifoaming agent, 0.1-0.8% of a wetting agent, 0.05-1% of a thickener, and the balance of water. The spraying method concretely comprises the following steps: (1) blending components of the coating material according to proportioning requirements to prepare the coating material; (2) adding a proper amount of the mixed coating material into a spray gun; and (3) preheating a slush molded skin in a 50-80 DEG C heating furnace for 3-15 min, removing the heated skin, arranging the heated skin on a fixing clamp in a back up manner, fixing and flattening an airbag area, uniformly spraying the prepared coating material on the back side of the skin complete airbag area by the spray gun, and allowing the coating layer to be completely dry. When the coating material is sprayed on the B surface of the PVC slush molded skin, the problems of difficult construction of a pure polyurethane coating and fragmentation of the PVC slush molded skin at a low temperature are solved.

Description

technical field [0001] The invention relates to a composite material sprayed on the skin, in particular to a coating material and a spraying method for improving the low-temperature blasting performance of the PVC slush plastic skin. Background technique [0002] Nowadays, the trend of using slush-molded skins for automotive interiors continues to rise. Lightweight and thin-walled slush-molded skins have become an inevitable trend in the innovative development of slush-molded processes. [0003] However, due to the high glass transition temperature of the PVC slush-plastic skin, the material becomes brittle at low temperatures. When the car dashboard airbag formed by the 1.0-1.4mm thick slush-plastic skin is blasted at low temperature, the skin is prone to cracking and splashing. , there are certain safety hazards, which seriously restrict the application space of slush-plastic skin and the development process of thin-walled slush-plastic skin. [0004] Although existing li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
CPCC08K5/06C08K5/103C08K2201/014C08L2205/025C09D175/04C08L75/04C08K13/02C08K3/36
Inventor 母丹张继堂王实王林冯绍立乔立明许东华陈龙王阳
Owner CHANGCHUN FAWAY ADIENT AUTOMOTIVE SYST CO LTD
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