Low-temperature stone chip-resistant automobile refinishing paint varnish and preparation method thereof
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
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[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
10
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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