Composite material for automobile spoiler and preparation method thereof
A composite material and spoiler technology, which is applied in the field of auto parts manufacturing, can solve the problems of poor environmental stress resistance, good diversion and heat dissipation effects, and difficult material processing, and achieves performance such as impact resistance and heat and cold resistance. Improve, enhance paint adhesion and paintability, solve the effect of poor dimensional stability
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Embodiment 1
[0040] A preparation method for a composite material for an automobile spoiler, comprising the following specific steps:
[0041] 1) Crush the CFRP waste to a particle size of 200 mesh, sieve it, and then calcinate it at 400°C for 1.5 hours under the protection of nitrogen to remove the resin, then immerse it in concentrated nitric acid for 0.5 hour, then rinse it with clean water, and then Put it in an oven at 85°C for 0.5h, take it out, and then soak it in the surface treatment solution, and then irradiate it with ultraviolet light for 1.5h, then put it in a vacuum oven at 85°C for 1h, and remove the solvent. Obtain the CFRP waste of secondary treatment; the wavelength of irradiated ultraviolet light is 300nm, and the ultraviolet irradiance is 30W / m 2 The solvent of the above-mentioned surface treatment liquid is acetone, which also includes 23wt% silane coupling agent, 1.2wt% benzylsulfonyl acetic acid and 0.8wt% dibenzyl sulfoxide; the above-mentioned CFRP waste and silane...
Embodiment 2
[0046] The preparation method of the composite material that is used for automobile spoiler, during work, the difference of specific steps and embodiment 1 is only: in step 3), ABS, PC, polyglycidyl methacrylate, mica powder, two The CFRP wastes treated for the first time were mixed, and then the first melting treatment was carried out at a temperature of 240° C., and the melting time was 3 hours; then vulcanized modified isoprene rubber, 1.5 parts by weight of nonylphenol polyether-6 phosphoric acid The ester and 2.5 parts by weight of pentaethylene glycol monodecyl ether are added to the product system of the first melting treatment, and the second melting treatment is carried out at a temperature of 235° C., and the melting time is 45 minutes to obtain a molten product; the above Each raw material was dried and dehydrated at 130° C. for 60 minutes and then melted; other steps were the same as in Example 1 to obtain a composite material.
Embodiment 3
[0048] The preparation method of the composite material that is used for automobile spoiler, when working, the specific steps differ from embodiment 1 only in that: in step 1), after the CFRP waste of secondary treatment is oxidized by concentrated acid, after surface treatment liquid It is prepared by activation treatment, that is, it is not combined with ultraviolet radiation; specifically: after high-temperature degreasing and concentrated acid oxidation of CFRP waste, it is then immersed in a surface treatment solution for activation treatment for 1.5 hours, and then placed in a vacuum oven at 85 ° C to fully dry 1h, remove the solvent to obtain the CFRP waste of secondary treatment; the solvent of the above surface treatment liquid is acetone, which also includes 23wt% silane coupling agent, 1.2wt% benzylsulfonyl acetic acid and 0.8wt% dibenzyl sulfoxide; the weight ratio of the CFRP waste to the silane coupling agent was 1:0.25; other steps were consistent with those in E...
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