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Preparation method for resin with free-spraying special texture effect

A spray-free, special technology, which is applied in the field of resin preparation with special spray-free texture effects, can solve the problems of flake pigments being shredded, losing appearance effects, etc., and achieve good compatibility

Inactive Publication Date: 2016-01-13
CHANGZHOU XUANMING NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result of such forced dispersion is that the pigment flakes are sheared and the appearance of the application is lost

Method used

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  • Preparation method for resin with free-spraying special texture effect
  • Preparation method for resin with free-spraying special texture effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Special Effect Pigment Surface Initiator Treatment

[0053] Add 100g of pearlescent pigment (Hangzhou Forward F8360, D50=150 microns), 0.4ml of ATRP surface initiator trimethoxysilylpropane bromide propionyl bromide (TMOSBMP) to 500mL three-necked flask equipped with mechanical stirrer and reflux tube, 400g of vinyl acetate solvent (PMAcetate), mixed and heated to 80 ° C for 3 hours, after the reaction, cooled to room temperature (25 ° C), the reactant was vacuum filtered, and washed with vinyl acetate solvent to obtain surface grafted Initiator pigments.

Embodiment 2

[0055] MMA resin coated special effect pigment

[0056] In the three-neck flask that mechanical stirrer and reflux tube are equipped with in 500mL, add the pigment (solid content is 20g) that 40g surface grafts prepared in embodiment 1 have initiator, 0.42g copper bromide CuBr, 200ml methacrylic acid Methyl ester monomer (MMA), 200g vinyl acetate solvent (PMAcetate), after mixing, fill the three-necked flask with nitrogen, and after heating to 80°C under a nitrogen atmosphere, add 0.5ml of nitrogen-degassed ligand pentamethyl Diethylenetriamine (PMDETA) continued to react for 1 hour. After the reaction, it was cooled to room temperature (25° C.), and the reactant was vacuum-filtered and washed with the solvent vinyl acetate to obtain a resin-coated pigment.

Embodiment 3

[0058] Preparation of Special-effect Plastic Particles by MMA Resin-coated Pearlescent Pigment

[0059] Calculated in parts by weight, 4 parts of pearlescent pigment coated with MMA resin prepared in Example 2, 1 part of titanium dioxide, 93 parts of Chimei ABS resin 707K, 1 part of antioxidant, 0.5 part of ultraviolet absorber, 0.5 part of lubricant Add a twin-screw extruder to mix, extrude and granulate. The extrusion temperature is 210°C to obtain spray-free special-effect plastic particles; then use a high-gloss mold to inject the prepared special-effect plastic particles into samples. The injection temperature is 220°C. 80°C.

[0060] A Minolta CM-3600A spectrophotometer was used to test the obtained spray-free special-effect plastic material, and the measured color L*a*b values ​​at D65 / 10° are shown in Table 1.

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Abstract

The invention belongs to the field of resin preparation technologies, and particularly relates to a preparation method for resin with the free-spraying special texture effect. According to the preparation method, an ATRP initiator is bonded on the surface of a metal pigment, monomers are precisely polymerized on the surface of the pigment one by one through controllable polymerization to form a uniform macromolecular coating, and therefore the problem that multiple flaky particles of a special-effect pigment are bonded in a crosslinking mode through traditional free radical polymerization and disorder polymerization is fundamentally solved. In addition, due to the fact that in the ATRP controllable polymerization process, the initiator is always located at the front end of a macromolecular chain and the activity of the initiator is continuously kept, the macromolecular coating can be regulated through design and selection of the monomers to enable the macromolecular coating to have the good compatibility with a resin substrate, and the dispersibility of the special-effect pigment in the resin substrate is effectively improved. The special-effect pigment coated in this way can be matched with multiple kinds of engineering plastic resin such as ABS, PC, PBT, PMMA and nylon to prepare the corresponding high-quality resin with the free-spraying special texture effect.

Description

technical field [0001] The invention belongs to the field of resin preparation technology, and in particular relates to a method for preparing a resin with a spray-free special texture effect. Background technique [0002] Special effect pigments are a new type of pigments. Different from ordinary pigments, it not only has color, but also has special texture effects, flop effects, and even functional effects. Special effect pigments mainly include metallic pigments (including colored metallic pigments), high-grade pearlescent pigments, new chip pigments, glass pigments, anti-counterfeiting pigments, infrared reflective (or transparent) pigments, and so on. Widely used in automotive coatings, plastic processing and high-grade ink and printing industries. At present, special effect pigments mainly include the following types: [0003] (1) Metallic pigments [0004] Metallic pigments are ground micron-sized aluminum flakes. It is characterized by smooth surface, concentrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08K9/10C08K3/36C08K3/22
Inventor 王巍胡一鸣韩敏潘丽静
Owner CHANGZHOU XUANMING NEW MATERIAL TECH CO LTD
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