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Environment-friendly type normal-temperature curing sealant and preparation method thereof

A room temperature curing and sealant technology, applied in the direction of chemical instruments and methods, adhesives, adhesive types, etc., can solve the problems of non-compliance with environmental protection, sustainable development strategy, environmental impact, etc., and achieve good scraping property and smooth surface Delicate, heat-resistant performance outstanding effect

Inactive Publication Date: 2015-02-04
三友(天津)高分子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the room temperature curing sealants used by automobile manufacturers all use a large amount of toxic solvents such as triphenyl and formaldehyde, which have a great impact on the human body and the environment, and do not conform to the strategy of environmental protection and sustainable development. However, water-based sealants have many properties. Compared with solvent-based sealants, there is a significant gap, so the development of an environmentally friendly, non-toxic room temperature curing sealant has a high application prospect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one (by weight percentage):

[0024] 9% for styrene-butadiene rubber;

[0025] Chloroprene rubber is 3%;

[0026] LG411 type thermoplastic elastomer SBS is 5.7%;

[0027] Terpene resin is 2.5%;

[0028] C 9 Petroleum resin is 6.3%;

[0029] Naphthenic oil is 4.9%;

[0030] Organic bentonite is 1.2%;

[0031] 264 anti-aging agent is 1.1%

[0032] Nano calcium carbonate filler is 18%;

[0033] Light calcium carbonate filler is 12%;

[0034] Naphthenic oil is 21.8%;

[0035] Butyl acetate is 14.5%.

[0036] The preparation method is:

[0037] a. Thinly pass 9% styrene-butadiene rubber and 3% chloroprene rubber in a two-roller machine for 10 times, and then set aside.

[0038] b. Soak the above-mentioned Botonghao rubber, 5.7% LG411, 4.9% naphthenic oil, 2.5% terpene resin, and 6.3% C9 petroleum resin in 21.8% cyclohexane and 14.5% butyl acetate 1-2 days, until completely dissolved and then stirred evenly.

[0039] c. Add 18% nano-calcium carbonate,...

Embodiment 2

[0042] Embodiment two (by weight percentage):

[0043] 11% for styrene-butadiene rubber;

[0044] LG411 type thermoplastic elastomer SBS is 4%;

[0045] Terpene resin is 3.75%;

[0046] C 9 Petroleum resin is 6.25%;

[0047] Naphthenic oil is 5%;

[0048] Organic bentonite is 1%;

[0049] 264 anti-aging agent is 1.5%;

[0050] Nano calcium carbonate filler is 14%;

[0051] Light calcium carbonate filler is 16%;

[0052] Naphthenic oil is 37.5%;

[0053] The preparation method is:

[0054] a. Thinly pass 11% styrene-butadiene rubber in a two-roller machine for 10 times, and then use it for later use.

[0055] b. Soak the above-mentioned Botonghao styrene-butadiene rubber, 4% LG411, 5% naphthenic oil, 3.75% terpene resin, and 6.25% C9 petroleum resin in 37.5% cyclohexane for 1-2 days , and stir until completely dissolved.

[0056] c. Add 14% nano-calcium carbonate, 16% light calcium carbonate, 1% organic bentonite, and 1.5% 264 anti-aging agent to the mixed solvent a...

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Abstract

The invention relates to an automobile sealant which comprises rubber, a thermal plastic elastomer, a plasticizing agent, tackifying resin, an anti-aging agent, a thickening agent, packing and a solvent. A preparation method comprises the following steps: thinning rubber in a two-roller machine 10 times for later use; soaking the thinned rubber, SBS, the plasticizing agent and the tackifying resin in the solvent for 1-2 days till being completely dissolved, and subsequently uniformly stirring; adding the packing, the anti-aging agent and the thickening agent into the soaked mixed solvent, and grinding for 3-5 times by using a three-roller machine till the materials are uniform; putting the uniformly grinded rubber into a defoaming machine, and defoaming for 20 minutes till the surface is fine in gloss; and packaging a finished product. The automobile sealant has the effects of environment-friendliness and no toxicity, and the solvent used in the sealant is an environment-friendly non-toxic solvent. The sealant is good in blade coating property, the surface is smooth and fine after blade coating, and the coating is uniform in thickness. The sealant is outstanding in thermal resistance and is free of crack or blister after being baked at 100 DEG C.

Description

technical field [0001] The invention relates to a sealant for automobiles, which is specifically used for sealing the welding seams of automobiles. Background technique [0002] With the development of automotive products in the direction of environmental protection and energy saving, safety and comfort, lightweight, low-cost dust removal cloth, long life and pollution-free, the development and application of new high-quality automotive adhesives / sealants has become an innovative topic that the automotive industry needs to pay attention to urgently. [0003] Weld seam sealant can prevent air, rainwater, and dust from entering the car, and play an important role in sealing, rust prevention, and leak prevention. At present, the room temperature curing sealants used by automobile manufacturers all use a large amount of toxic solvents such as triphenyl and formaldehyde, which have a great impact on the human body and the environment, and do not conform to the strategy of en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J109/06C09J111/00C09J153/02C09J145/00C09J157/02C09J11/04C09J11/06C09K3/10
Inventor 邱大鹏王永明高之香李崇吴金丽郭平胜李士学李程张金平
Owner 三友(天津)高分子技术有限公司
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