Low-temperature stone chip-resistant automobile refinishing paint varnish and preparation method thereof
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An automobile refinish paint and anti-stone chip technology, which is applied in the field of automobile refinish paint, can solve the problems of unsatisfactory anti-stone chip effects, and achieve excellent stone chip resistance, low VOC, and environmental friendliness
Inactive Publication Date: 2018-03-27
DONGLAI COATING TECH SHANGHAI
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Problems solved by technology
Although the repair paint varnish of this patent has good environmental protection performance, the anti-stone impact effect after its film formation is not ideal
Method used
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preparation example Construction
[0030] The preparation method of low-temperature anti-stone chip automobile refinish paint varnish preferably comprises the following steps:
[0031] (1) Take hydroxyacrylic resin and solvent according to the formula, stir at 600-800rpm for 5-15min, and disperse evenly;
[0032] (2) Add leveling agent, ultraviolet absorber and catalyst in turn under the low-speed stirring condition of 150-300rpm, stir and disperse at high speed at 1000-1500rpm for 30 minutes, and obtain the target product.
Embodiment 1
[0034] (1) The formula of anti-stone chip varnish is as follows:
[0035] raw material name
weight
Setalux 1910 BA-75 Hydroxypropylene Resin
30
FS-4660 Hydroxypropylene Resin
35
PMA
7.0
Xylene
10
n-Butyl acetate
13
BYK361N
0.5
BYK301
0.3
TINUVIN234
1.0
DABCO T120
0.2
[0036] (2) Preparation process:
[0037] Add Nupace 1910 BA-75 hydroxypropylene resin, FS-4660 hydroxypropylene resin, PMA, xylene, n-butyl acetate in the formula to the stirring tank, stir at 600-800r / min for 5-15 minutes, then Slowly add BYK361N, BYK301, TINUVIN234, and DABCO T120 in the formula to the above dispersion in sequence. The stirring speed is 1000-1500r / min, stirring for 30min, and filtering to obtain the anti-stone chipping varnish.
[0038] (3) Construction inspection:
[0039] Add 55 parts of N-3390 and 45 parts of PMA into the stirring tank, stir at 600-800r / min for 25-3 minutes, and fi...
Embodiment 2
[0045] Compared with Example 1, except that the formula of anti-stone chip automotive refinish paint varnish is changed as follows, all the others are the same.
[0046] raw material name
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Abstract
The invention relates to a low-temperature stone chip-resistant automobile refinishing paint varnish and a preparation method thereof. The low-temperature stone chip-resistant automobile refinishing paint varnish comprises the following components in parts by weight: 60-70 parts of hydroxy acrylic resin, 10-30 parts of a solvent, 0.5-1.5 parts of a levelling agent, 0.1-0.5 parts of a catalyst, and0.5-1.5 parts of an ultraviolet ray absorber; while in preparation, the hydroxy acrylic resin and the solvent are weighed according to a formula, the materials are mixed and uniformly dispersed, under low-speed stirring condition, the levelling agent, the ultraviolet ray absorber, and the catalyst are added in order, the materials are stirred and mixed at a high speed, and the target product canbe obtained. Compared with the prior art, after the varnish is subjected to solidification at low temperature and film forming, the refinishing paint varnish has excellent stone chip-resistant performance, can achieve stone chip-resistant performance of an automobile original paint, has low VOC, and is environmentally friendly.
Description
technical field [0001] The invention relates to the field of automobile refinishing paints, in particular to a low-temperature stone chip-resistant automobile refinishing paint varnish and a preparation method thereof. Background technique [0002] When the car is running, it will inevitably splash the sand and gravel on the road surface, which will cause damage to the surface coating of the car. Once the coating is broken, the corrosion will start from the defect and spread to the inside of the steel plate. This in turn leads to corrosion of the substrate, so for automotive surface systems, the ability to resist damage to coatings by gravel strikes is an important performance indicator. However, for the field of automotive refinish paint, the conventional varnishes used in the market cannot meet the requirements of stone chip resistance. [0003] In recent years, because automobile companies such as Volkswagen have adopted the coating process without intermediate coating, ...
Claims
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Application Information
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