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Spraying-free high-impact PC alloy material with metallic luster and preparation method thereof

A technology of alloy materials and metallic luster, which is applied in the field of high-impact PC alloy materials and its preparation, can solve the problems of easy generation of flow marks, poor compatibility, and easy discoloration of molded products, and achieve the effect of improving the impact resistance of materials

Active Publication Date: 2018-05-04
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the technical solutions disclosed in the above-mentioned patents to achieve a metallic surface decoration effect by adding metal powder to the matrix resin all have the following deficiencies to varying degrees, which affect their use in various fields:
[0009] 1. The base resins used are non-engineering plastics with low heat resistance, which will seriously affect the mechanical properties and surface decoration effects of the prepared products, such as polypropylene, PMMA, ABS, etc.;
[0010] 2. The metal powder used is easy to oxidize and change color, resulting in a decrease in the metal texture of the molded product that is easy to change color;
[0011] 3. The metal powder is rod-shaped or spherical and has poor compatibility with resins, resulting in appearance defects such as flow marks, weld marks, and tiger skin patterns during molding; at the same time, the physical properties of the parts, especially the impact resistance, are seriously reduced
[0015] The above-mentioned patents only focus on the decorative appearance of PC parts, but do not mention the improvement of the mechanical properties of the parts, especially the impact resistance.

Method used

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  • Spraying-free high-impact PC alloy material with metallic luster and preparation method thereof
  • Spraying-free high-impact PC alloy material with metallic luster and preparation method thereof
  • Spraying-free high-impact PC alloy material with metallic luster and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0062] Preparation of pigment masterbatch:

[0063] Weigh each raw material component according to the corresponding data in Table 1 below (units are: gram), first stir the pigment and the pigment dispersant in a low-speed mixer at room temperature for 3 hours, let the pigment dispersant and the pigment act again, and add the pigment dispersant It helps the pigment to disperse more uniformly in the carrier resin and has better compatibility; then add the carrier resin, compatibilizer and antioxidant and stir at a low speed for 30 minutes, transfer to the twin-screw screw extruder, at 130-180 Extrusion and granulation at ℃ temperature, the length-to-diameter ratio of the extruder is 32, the shear is weak, and there are few kneading blocks, and various pigment masterbatches are prepared.

[0064] Table 1

[0065]

[0066] EMA resin is selected from DOW company brand 1125AC in the United States;

[0067] The pigment (pearl luster 1) is YZ323 (particle size 5-25um) selected f...

Embodiment 1～13

[0079] Embodiments 1-13 have the preparation of high-impact PC alloy material with metallic luster free from spraying

[0080] According to the corresponding example data in Table 2, weigh each raw material component (unit: kg), mix the other raw material components except the pigment masterbatch and compatibilizer I evenly, and send it to the main feed of the extruder , Pigment masterbatch and compatibilizer I are fed into the extruder through side feeding, mixed and plasticized at 220-260°C, the length-to-diameter ratio of the extruder is 36, the shear is weak, and there are few kneaded pieces, and then cooled The high-impact PC alloy material with metallic luster without spraying is prepared by pelletizing.

[0081] Table 2

[0082]

[0083]

[0084] The PC resin is injection molding grade PC resin of LG-DOW company brand 1201-10 and 1201-22;

[0085] Pigment (pearl 1) Zhejiang Wenzhou Yunzhu Pigment Factory YZ323 (particle size 5-25um);

[0086] Pigment (aluminum ...

Embodiment 1

[0103] Example 1 (PC pure resin) has the highest notched impact. And embodiment 2 (resin+pearl luster+antioxidant) and embodiment 6 (resin+aluminum strip+antioxidant) pearlescent pigment and aluminum strip pigment add and all cause material notched impact strength to drop significantly; Its reason is that PC and pearlescent or The poor compatibility of metallic pigments leads to a substantial decrease in the notch impact of the material.

[0104] In Examples 10-12, three kinds of purchased pigment masterbatches were respectively used, which were prefabricated color masterbatches coated and prefabricated by the purchased color masterbatch manufacturers. Compared with Example 2 and Example 6 in which pigments are directly added, the impact energy is improved by about 10%. The reason is that the dispersion of the pigment in the masterbatch is slightly better than that of the PC pure resin and the pearlescent pigment blended and extruded. In Example 13, PC resin is added with pu...

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Abstract

The invention discloses a spraying-free high-impact PC alloy material with metallic luster. The alloy material comprises the following raw materials in parts by weight: 70-90 parts of PC, 2-10 parts of pigment master batch, 3-10 parts of a compatilizer, 1-10 parts of a chain extender and 0.1-5 parts of other assistants. The invention discloses a PC alloy material formula. Due to matched use of thepigment master batch, the compatilizer and the chain extender, a spraying-free PC part with excellent appearance of obvious metal texture, pearlescent glitter and the like as well as high impact property is obtained after extruding granulation. The part has wide application prospects and is particularly suitable for being used in a stress environment.

Description

technical field [0001] The invention relates to the field of PC alloy materials, in particular to a high-impact PC alloy material with metallic luster without spraying and a preparation method thereof. Background technique [0002] The spray-free metal texture composite material is a new type of functional plastic, through extrusion or injection molding, decorative parts with metal texture can be prepared at one time. Compared with the traditional production technology of injection molding and then spraying to modify the appearance of parts, the spray-free technology does not need to carry out electroplating, painting and other decorative processes after molding. The environmental pollution problems such as toxic and volatile solvents that are ubiquitous in the process are products and new trends in the development of decorative materials such as automobiles and home appliances. [0003] At present, the spray-free metal texture composite material is mainly added to the matr...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L23/08C08L23/06C08K13/06C08K9/10C08K3/36C08J3/22
CPCC08J3/226C08J2369/00C08J2423/06C08J2423/08C08K3/36C08K9/10C08K13/06C08K2201/003
Inventor 周国剑黄瑞杰陈晓敏张正
Owner CGN JUNER NEW MATERIALS
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