Spraying-free material and manufacturing method of spraying-free ornament for automotive interiors
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A technology for automotive interiors and manufacturing methods, applied in coatings and other directions, can solve the problems of weakening the special effect of parts, inability to achieve scratch resistance, gate marks, etc., to avoid flow marks or weld line defects, and avoid installation structure. Fracture, the effect of improving the manufacturing yield
Inactive Publication Date: 2021-02-26
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
However, the models we currently sell on the market do not use a large number of special-effect spray-free decorative parts. The main reason is that the materials for producing special-effect spray-free parts contain effect toners, which will be used in the production of relatively complex car decorations. When the parts are used, there will be retention, overlapping and other phenomena in some structures of the parts, which will show appearance defects such as flow marks, weld lines, and gate marks on the appearance of the parts.
At the same time, because many materials for the production of special-effect spray-free decorative parts have weak scratch resistance, they cannot reach or approach the scratch-resistant effect of paint, which makes the parts easy to scratch and bruise, which weakens the special effects of the parts
Furthermore, the current mold flow analysis software cannot completely and effectively support the CAE simulation analysis of spray-free material parts, which has an impact on the appearance defect prediction and improvement of the parts
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Embodiment 1
[0027] Embodiment 1, the manufacture of the outer cover plate of the silver column.
[0028] Three materials A were manufactured according to the formulation in Table 1.
[0029] Table 1 Spray-free material formula
[0030] serial number 1 2 3 Matrix resin PMMA, mass ratio is 95% ASA, 95% by mass SAN, 95% by mass effect toner 1.5％ 1.5％ 1.5％ basic toner 0.5％ 0.5％ 0.5％ Auxiliary Masterbatch 3％ 3％ 3％
[0031] The effect toner is a mixture of aluminum-silver powder and pearlescent pigments, wherein the aluminum-silver powder is in the shape of silver dollars or scales, with a particle size of 30-35 μm and a thickness of 0.2-1 μm. It is purchased from Shanghai Kaiyin Chemical Co., Ltd. and produced by German Eka; Pearlescent pigments are mica powder coated with titanium dioxide or other metal oxides on the surface, with a density of 3g / cm 3 , particle size 10-60μm, produced by Guangzhou United Materials Technology Co., Ltd.; alum...
Embodiment 2
[0048] Embodiment 2, the manufacture of the outer cover plate of the metal red column.
[0049] Three materials A were manufactured according to the formulation in Table 4.
[0050] Table 4 Spray-free material formula
[0051] serial number 1 2 3 Matrix resin PMMA, mass ratio is 95% ASA, 95% by mass SAN, 95% by mass effect toner 1.5％ 1.5％ 1.5％ basic toner 0.5％ 0.5％ 0.5％ Auxiliary Masterbatch 3％ 3％ 3％
[0052] The effect toner is a mixture of copper powder and pearlescent pigment, wherein the copper powder is in the form of silver flakes, with a particle size of 10-20 μm and a thickness of 0.3-1.2 μm, purchased from Shenzhen Licaiduo Technology Co., Ltd.; the pearlescent pigment is the surface Mica powder coated with titanium dioxide or other metal oxides, density 3g / cm 3 , particle size 10-60 μm, produced by Guangzhou United Material Technology Co., Ltd. Copper powder accounts for 90% of the effect toner.
[0053] The basi...
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Abstract
The invention discloses a spraying-free material. The spraying-free material comprises the following components in percentage by mass: 80-95% of matrix resin, 0.1-3% of effect toner, 0.1-3% of basic toner, 1-3% of auxiliary master batch and 0-20% of filler; and the spraying-free material has various different color effects and has good toughness. The invention further discloses a manufacturing method of a spraying-free ornament for automotive interiors. According to the manufacturing method, a double-color forming mold is adopted; a movable mold of the double-color forming mold is provided with a first color forming area and a second color forming area. The manufacturing method comprises the following steps that: S1, a material A and a material B are weighed correspondingly, the material Ais the spraying-free material, and the material B is an ornament framework injection molding material; S2, respectively putting the material A and the material B into corresponding gun barrels, closing the mold, and carrying out injection molding on the material A in the first color forming area to form an ornament surface layer; and S3, opening the mold, after rotating the mold to change the position of the mold, closing the mold again, carrying out injection molding on the material B on the second color forming area so as to form an ornament framework. The technological process is simple, and flow marks and weld line defects can be avoided.
Description
technical field [0001] The invention relates to the manufacture of automobile interior decoration, in particular to a method for manufacturing a spray-free material and a spray-free decorative part for automobile interior decoration. Background technique [0002] With the advancement of material industry technology and the development of material processing technology routes, more and more new materials and new processes have been fully used in all walks of life. In the field of automotive trim design, in order to meet consumers' needs for the diversity of CTF solutions for automotive trim, designers gradually use bright and colorful hues and effects such as pearlescent, flashing, metallic, colorful, and color-changing on automotive trim. , the usual way to achieve these effects is to spray special effect paint or film. However, spraying special effect paint is not only complicated and costly, but also has harmful effects on the ecological environment, air quality and the h...
Claims
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Application Information
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