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High-brightness black scratch-resistant spraying-free nylon material and preparation method thereof

A bright black scratch-resistant, black scratch-resistant technology, applied in coatings and other directions, can solve the problems of difficult to achieve high gloss black, low gloss, increase the scratch resistance of nylon materials, etc., to achieve easy processing, The effect of good compatibility and good scratch resistance

Active Publication Date: 2021-04-02
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the method of compounding aniline black and carbon black, using the good dyeing effect of aniline black and the blackness of carbon black to obtain high-gloss black nylon materials, and introducing a specially treated organic clay on the surface can significantly increase the nylon material. Scratch resistance, but the matrix resin is opaque nylon 6 and nylon 66, the gloss of the material is not high, and it is difficult to achieve the effect of high gloss black

Method used

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  • High-brightness black scratch-resistant spraying-free nylon material and preparation method thereof
  • High-brightness black scratch-resistant spraying-free nylon material and preparation method thereof
  • High-brightness black scratch-resistant spraying-free nylon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] The preparation method of the high-brightness black scratch-resistant spray-free nylon material of embodiment 1-4 comprises the following steps:

[0047] Dry the flexible transparent polyamide and the rigid transparent polyamide in an oven at 100°C for 4 hours, and set aside.

[0048] Mix fumed silica, silicone powder, antioxidant 1098, antioxidant 168, anti-ultraviolet agent UV234, lubricant 540A, and high-concentration carrier-free carbon black masterbatch KO 3300 in a high-speed mixer to obtain a mixture.

[0049] The flexible transparent polyamide after drying, the rigid transparent polyamide after drying and the above mixture are mixed uniformly by a high-speed mixer, and then added to a twin-screw extruder through the main feed port (the diameter of the screw is 25mm, and the ratio of length to diameter is L / D=40), the control temperature of each section of the twin-screw extruder (from the feeding port to the outlet of the machine head) is 250°C, 260°C, 275°C, 2...

Embodiment 4

[0084] Comparing Example 4 with Examples 1-3, it was found that after adjusting the amount of black masterbatch, it was found that the amount of black masterbatch in Example 4 was less than that of Examples 1-3, and its L value increased to 28.3, indicating that its blackness decreased.

[0085] By comparing Example 3, Comparative Example 4, Comparative Example 5, and Comparative Example 3, it can be seen that when no scratch-resistant agent (fumed silica, silicone powder) was added in Comparative Example 3, the gloss of the material prepared in Comparative Example 3 Highest degree, but its wear resistance and scratch resistance are not satisfactory. Due to its small particle size, fumed silica has little effect on the gloss after adding, and it is filled in the resin to further improve the mechanical properties and wear resistance of the material. Adding silicone powder alone has little effect on gloss, but it can significantly improve the scratch resistance of the material. ...

Embodiment 1

[0094] The performance test data of embodiment 1 and comparative examples 6~10 are as shown in table 4:

[0095] Table 4

[0096]

[0097]

[0098] It can be seen from the data in Table 4 that compared with Example 1, Comparative Example 6 does not add silicone powder, and compared with Example 1, the fluidity and scratch resistance performance of Comparative Example 6 are both reduced.

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Abstract

The invention discloses a high-brightness black scratch-resistant spraying-free nylon material. The material is prepared from the following components in parts by weight: 10-80 parts of flexible transparent polyamide, 10-80 parts of rigid transparent polyamide, 3-8 parts of a scratch-resistant agent, 0.5-4 parts of black masterbatch and 0.3-1.8 parts of an additive. The scratch-resistant agent isprepared from 2.5 to 6 parts by weight of fumed silica and 0.5 to 2 parts by weight of silicone powder; and the additive is prepared from the following components in parts by weight: 0.1-0.6 part of an antioxidant, 0.1-0.6 part of an anti-ultraviolet agent and 0.1-0.6 part of a lubricant. The high-brightness black scratch-resistant spraying-free nylon material provided by the invention has good scratch resistance, the technical problem that a high-brightness black appearance part in the current market is easy to scratch is solved, and the selected scratch-resistant agent has good compatibilitywith the nylon material, is not separated out and does not influence mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of automobile polymer material preparation, and in particular relates to a high-gloss black scratch-resistant spray-free nylon material and a preparation method thereof. Background technique [0002] With the continuous promotion of the concept of automobile lightweight, the proportion of plastic products in auto parts continues to expand, and the interior and exterior parts of automobiles are basically made of plastic. Nowadays, car interiors with black as the main color are being favored by the younger generation of consumers, and the effect of high-gloss black interior parts adds a dreamy luxury to the atmosphere in the entire car. The high-gloss black interior style is full of sense of technology, especially shining under the illumination of the lights, which looks very high-end. At present, the most used parts are: switch panel, door trim panel, steering wheel combination switch, instrument panel trim ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L83/04C08K13/02C08K3/36C08K5/526C08K5/20C08K3/04B29C45/00
CPCC08L77/06B29C45/0001C08K2201/011C08L2201/08C08L2205/03C08L2205/025C08L83/04C08K13/02C08K3/36C08K5/526C08K5/20C08K3/04
Inventor 李玉增赵志刚程方清张毅王伟黄金华夏镭
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC