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Foaming sound-proof acrylic resin vehicle bottom protective plastisol and preparation method thereof

An acrylic resin and plastisol technology, applied in the direction of sound-producing equipment, instruments, etc., can solve the problems of reducing the price competitiveness of automobiles, increasing the cost of the whole vehicle, and the cost ratio is large, and achieving the effect of reducing van der Waals force, optimizing performance, and being easy to accept.

Inactive Publication Date: 2008-08-27
长春依多科化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like the above-mentioned PVC car underbody protective plastisol, there is also a large amount of construction and high unit consumption, which increases the cost of the whole vehicle, especially for low-end and medium-end vehicles, and reduces the competitiveness of automobile prices.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] With 20 kilograms of thermosetting acrylic paste resin (weight average molecular weight 1000000Da), 20 kilograms of thermosetting type end-capped polyurethane (average molecular weight is 12000), 4 kilograms of C 6 Aliphatic hydrocarbon, 1.5 kg of 4,4-oxo-p-benzenesulfonyl hydrazide blowing agent, 0.2 kg of fumed silica thixotropic agent, 10 kg of dioctyl phthalate, 10 kg of 1,2-phthalic acid- 2,2-Dimethyl-1-(1-methylethyl)-3-(isobutyryloxy)propylbenzyl ester (CAS: 16883-83-3), 34.3 Kilograms of synthetic fatty acid-coated nano-calcium carbonate and other raw materials were stirred and mixed at a temperature of 16°C, and stirred and mixed for 15 minutes; at the same temperature, three-rollers were ground, and after grinding, stirred for 2 hours; Hours, after filtering through a filter screen of more than 60 meshes, the plastisol of the present invention is obtained.

[0054] It was tested according to the construction requirements and the following methods, and the res...

Embodiment 2

[0057] With 25 kilograms of thermosetting acrylic paste resin (weight-average molecular weight 1300000Da), 15 kilograms of thermosetting type end-capped polyurethane (average molecular weight is 9000), 6 kilograms of C 7 Aliphatic hydrocarbon, 1.2 kg of 4,4-oxo-p-benzenesulfonyl hydrazide blowing agent, 0.6 kg of fumed silica thixotropic agent, 12 kg of dioctyl phthalate, 12 kg of 1,2-phthalic acid- 2,2-Dimethyl-1-(1-methylethyl)-3-(isobutyryloxy)propylbenzyl ester, 28.2 kg of raw materials such as synthetic fatty acid-coated nano-calcium carbonate, controlled temperature at 22°C , stirred and mixed for 30 minutes; at the same temperature, ground with a three-roller machine, after grinding, stirred for 3 hours; vacuumed for 3 hours with a vacuum degree of less than -0.05 MPa, and filtered through a filter screen of 60 mesh or more to obtain this product. Invented plastisols.

[0058] It was tested according to the construction requirements and the following methods, and the r...

Embodiment 3

[0061] With 30 kilograms of thermosetting acrylic paste resin (weight average molecular weight 1500000Da), 10 kilograms of thermosetting type end-capped polyurethane (average molecular weight is 6400), 6 kilograms of C 8 Aliphatic hydrocarbon, 0.9 kg of 4,4-oxo-p-benzenesulfonyl hydrazide blowing agent, 0.9 kg of fumed silica thixotropic agent, 15 kg of diisononyl phthalate, 15 kg of 1,2-phthalic acid -2,2-Dimethyl-1-(1-methylethyl)-3-(isobutyryloxy)propyl benzyl ester, 22.2 kg synthetic fatty acid-coated nano-calcium carbonate raw material, controlled temperature 28°C , stirring and mixing for 40 minutes; at the same temperature, grind on a three-roll machine, and stir for 3 hours after grinding. The plastisol of the present invention is obtained by vacuuming for 4 hours with a vacuum degree of less than -0.05 MPa and filtering with a filter screen of 60 mesh or more.

[0062] It was tested according to the construction requirements and the following methods, and the results...

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PUM

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Abstract

The invention relates to foaming sound-proof type acrylic resin car-bottom protection plastisol and the preparation process thereof. The foaming sound-proof type acrylic resin car-bottom protection plastisol comprises components with following percentage by weight, 4-8% volatile solvent, 20-40% plasticizing agent, 20-35% acrylic polymer, 5-20% polyurethane resin, 0.2-1.5% foaming agent, 0.2-1.5% thixotropic agent and 15-45% filling. The preparation process comprises mixing raw materials under controlled temperature, stirring, grinding with a three roll mill, stirring under -0.05-0.1MPa, screening and obtaining finished products. The plastisol of the invention has excellent sound-proof effect, less construction usage, safe construction condition and low cost.

Description

technical field [0001] The invention relates to an acrylic resin plastisol, in particular to a foaming sound-insulating type acrylic resin car bottom protection plastisol and a preparation method thereof. Background technique [0002] At present, the commonly used underbody protection plastisol is PVC underbody protection plastisol. In the automotive coating industry, underbody protection plastisol is sprayed onto the surface of the steel plate at the bottom of the car by airless spraying and other construction methods to form a protective film. Then it is pre-baked to make it surface dry, and then sprayed with paint such as intermediate coating for baking and molding, and finally becomes a uniform and stable protective film similar to plastic, which can effectively prevent the entry of water, dust, and noise. The bottom forms a good sealing layer, which protects the car, especially the bottom steel plate, from the impact of stones, etc., and reduces vibration noise. The pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08K5/42C08J9/02G10K11/16C08L75/04C08K5/12C08K3/36C08K3/26
Inventor 朱春伟谢雷韩庆国
Owner 长春依多科化工有限公司
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