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Baking varnish-imitating black high-gloss spraying-free aesthetic plastic and preparation method thereof

A spray-free, black technology, applied in the field of functional plastics, can solve the problems of poor dispersion of carbon black, difficulty in achieving high gloss and high brightness, and achieve the effects of easy dispersion, prevention of damage to the lamellar structure, and improvement of processing fluidity

Pending Publication Date: 2021-09-17
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to achieve high gloss and brightness due to poor dispersion of carbon black in high viscosity resins

Method used

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  • Baking varnish-imitating black high-gloss spraying-free aesthetic plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Add natural flake graphite, pigment black 28 with a particle size of less than 2 μm, dispersant sodium dodecylbenzene sulfonate, and ABS powder with a particle size of less than 20 μm into the mixer, stir and grind at 100 rpm for 30 minutes, and then add flash mica for grinding 1min, obtain the pretreatment pigment; Add the zirconia of 0.3mm in the mixer as the auxiliary grinding medium; Wherein the mass ratio of the natural flake graphite, flash mica, pigment black 28, dispersant, ABS powder, zirconia is 20 :5:5:0.5:50:70;

[0046] (2) According to the mass ratio of 100:3:1:0.05:0.1, add granular ABS, spherical barium sulfate with a particle size of less than 5 μm, paraffin, TH-944, and antioxidant 1010 into a high-speed mixer to disperse to obtain premixed ABS;

[0047] (3) Add pre-mixed ABS to the first-stage co-rotating parallel twin-screw extruder, add pre-treated pigments to the second-stage reciprocating screw extruder, and make the pre-treated pigment and pr...

Embodiment 2

[0049] (1) Add natural flake graphite, pigment black 28 with a particle size of less than 2 μm, dispersant sodium dodecylbenzene sulfonate, and ABS powder with a particle size of less than 20 μm into the mixer, stir and grind at 80 rpm for 60 minutes, and then add flash mica for grinding 3min, obtain pretreatment pigment; Add the zirconia that particle diameter is 0.3mm in the mixer as auxiliary grinding medium; Wherein the mass ratio of described natural flake graphite, flash mica, pigment black 28, dispersant, ABS powder, zirconia is 15 :10:3:1:60:70;

[0050] (2) According to the mass ratio of 100:8:0.5:0.1:0.05, add granular ABS, spherical barium sulfate with a particle size of less than 5 μm, silicone powder, UV-329, and antioxidant 168 into a high-speed mixer to disperse to obtain premixed ABS ;

[0051] (3) Add pre-mixed ABS to the first-stage co-rotating parallel twin-screw extruder, add pre-treated pigments to the second-stage reciprocating screw extruder, and make t...

Embodiment 3

[0053] (1) Add natural flake graphite, pigment black 28 with a particle size of less than 2 μm, dispersant sodium dodecylbenzene sulfonate, and ABS powder with a particle size of less than 20 μm into the mixer, stir and grind at 90 rpm for 40 minutes, and then add flash mica for grinding 2min, obtain the pretreatment pigment; Add the zirconia that particle size is 0.3mm in the mixer as auxiliary grinding medium; Wherein the mass ratio of described natural flake graphite, flash mica, pigment black 28, dispersant, ABS powder, zirconia is 18 :8:4:0.8:55:60;

[0054] (2) According to the mass ratio of 100:5:0.8:0.08:0.08, add granular ABS, spherical barium sulfate with a particle size of less than 5 μm, paraffin, UV-329, and antioxidant 1010 into a high-speed mixer to disperse to obtain premixed ABS;

[0055] (3) Add pre-mixed ABS to the first-stage co-rotating parallel twin-screw extruder, add pre-treated pigment to the second-stage reciprocating screw extruder, and make the pre-...

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Abstract

The invention relates to the field of functional plastics, and discloses a baking varnish-imitating black high-gloss spraying-free aesthetic plastic and a preparation method thereof. The spraying-free aesthetic plastic is prepared by the steps that natural crystalline flake graphite, flash mica, pigment black 28, a dispersing agent and ABS powder are mixed and ground into pretreatment pigment; granular ABS, spherical barium sulfate, a lubricant, a light stabilizer and an antioxidant are dispersed at a high speed to obtain premixed ABS; in the first stage, the premixed ABS is added by adopting a co-rotating parallel twin-screw extruder, and spherical barium sulfate and silicone powder are dispersed in ABS melt by utilizing the shearing force of the premixed ABS; and in the second stage, the pretreated pigment is added by adopting a reciprocating screw extruder, and good dispersion of the pigment can be realized through reciprocating, so that the pretreated pigment is dispersed in the ABS melt, the pretreated pigment is prevented from being excessively sheared by high shear, and the obtained plastic pigment is uniform in dispersion and high in glossiness. The black highlight effect similar to the gloss of baking varnish can be achieved.

Description

technical field [0001] The invention relates to the technical field of functional plastics, in particular to a paint-like black high-gloss spray-free aesthetic plastic and a preparation method thereof. Background technique [0002] Plastic materials have the advantages of low density, low price, and convenient manufacture, and are widely used in automobile manufacturing, electrical casings, daily necessities, aerospace, handicrafts and other fields. However, due to the disadvantages of uneven color, monotonous color, high scrap rate, and difficult recycling and reuse of plastic products when they are molded, they are often painted with paint and processed according to the requirements of color, luster, and pattern. Uneven color, monotonous color, mottled blemishes, scratches and other defects, and can greatly improve the antifouling, antistatic performance, hand feeling and aesthetics of the product. [0003] In order to further improve the quality of plastic products and o...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08K3/04C08K7/18B29B9/06B29C48/92
CPCC08L55/02B29B9/06B29C48/92B29C2948/92704C08L2205/025C08K2201/005C08K3/04C08K7/18
Inventor 曾军堂陈庆司文彬李钧
Owner CHENDU NEW KELI CHEM SCI CO LTD