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Application of waste polyester fibers in preparation of powder coating and powder coating
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A polyester fiber and powder coating technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of reducing the amount of pigment used in powder coatings and not having the effect of fiber powder dyeing
Active Publication Date: 2022-03-18
福建赛纤新材料有限公司
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At the same time, this patent does not have the dyeing effect of pigments and dyes in fiber powder, and will not reduce the amount of pigments used for dyeing powder coatings.
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Embodiment 1～2
[0071] Embodiment 1-2 Application of blue waste polyester fiber powder in the preparation of powder coating (dry mixing process)
[0072] 1. Preparation of powder coating
[0073] In embodiment 1~2, the preparation method of powder coating is as follows:
[0074] Preparation: Will figure 1 The waste polyester fibers shown are sorted and collected according to different colors, such as figure 2 The shown blue waste polyester fiber is ground into blue waste polyester fiber powder (see specific examples for fineness); the remaining raw materials are mixed, extruded, ground and sieved into powder;
[0075] Dry blending: According to the ratio of (2~5):(98~95), accurately weigh the blue waste polyester fiber powder and other raw material powders, mix and disperse evenly to obtain the powder coating.
[0076] The raw material composition table of table 1 embodiment 1~2 sand pattern powder coating
[0088] The application of embodiment 3~5 waste polyester fiber powder in the preparation powder coating (melt extrusion process)
[0089] 1. Preparation of sand grain powder coating
[0090] In Examples 3-4, the color of the waste polyester fiber is blue; in Example 5, the color of the waste polyester fiber is pink; the preparation method of the powder coating is the same as that of Examples 1-2.
[0091] The raw material composition table of table 3 embodiment 3~5 sand pattern powder coating
[0092]
[0093] In Examples 3-5, the pigments used are carbon black and titanium dioxide, the color is RAL7012 basaltic lime, and the curing condition of the sand grain powder coating is 200° C. / 15 minutes.
[0094] 2. Test of sand grain powder coating
[0095] The sand grain powder coatings prepared in Examples 3-5 were subjected to performance tests, and the test results are shown in Table 4.
[0096] The test result table of the sand pattern powder coating of table 4 embodiment...
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Abstract
The invention provides application of waste polyester fibers in preparation of a powdercoating and the powdercoating containing the waste polyester fibers. The application comprises the steps that the waste polyester fibers are subjected to color separation collection according to different colors and ground into waste polyester fiberpowder; according to the weight percentage of the powder coating, 2%-10% of the waste polyester fiber powder is weighed and added, and the powder coating is prepared. The powder coating prepared from the waste polyester fibers has special surface effect characteristics, and the use amount of the polyester resin and the pigment is small, so that the cost is reduced.
Description
technical field [0001] The invention relates to the technical field of polyester materials and powder coatings, in particular to the application of waste polyester fibers in the preparation of powder coatings and the powder coatings. Background technique [0002] Polyester (polyethylene terephthalate, PET) is the largest synthetic polymer material, widely used in powder coating main resin, fiber, textile fabric, clothing, polyester bottle, film, sheet and other products . Based on the enhancement of environmental awareness, resource conservation and sustainability needs, how to deal with the scraps produced in the manufacture of polyester textile products and the waste after use of polyester textile products has become an urgent problem to be solved, and the recycling of waste polyester fiber has become an important issue. Green textile development direction. [0003] At present, recycled waste polyester is widely used in chemical synthesis and textile processing. US Pate...
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