Ceramic nano injection molding polyamide and preparation method thereof

A technology for injection molding polyamide and polyamide, which is applied in the field of composite laser forming materials, can solve problems such as the difficulty of taking into account the bonding force and mechanical properties, and achieves the effect of simple and easy preparation method and improved mechanical properties.

Pending Publication Date: 2022-07-22
GUANGZHOU CHENDONG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a ceramic nano-injection polyamide and a preparation method thereof, so as to further solve the technical problem that it is difficult to balance the bonding force and mechanical properties of existing plastics by ceramic nano-injection molding

Method used

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  • Ceramic nano injection molding polyamide and preparation method thereof
  • Ceramic nano injection molding polyamide and preparation method thereof
  • Ceramic nano injection molding polyamide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation of the plastic-ceramic testing monolith used in the present invention:

[0030] In the present invention, the overall plastic ceramic test piece is prepared with reference to the related patent method of Japanese Dacheng nano injection molding. The details are as follows: figure 1 It is a schematic diagram of the overall structure of the ceramic plastic test piece. The size of the ceramic piece is 18mm×45mm×1.6mm, the size of the plastic part is 10mm×45mm×3mm, and the combined area of ​​plastic and ceramic is 0.5cm 2 . In all experiments, the injection molding kept the same injection molding conditions, the barrel temperature was 300-320 °C, and the mold temperature was 140 °C.

[0031] Plastic ceramic bonding performance test:

[0032] The test standard for the adhesion between ceramics and plastics used in the present invention refers to the standard in Japan's Taisei Chemical Patent, and the bonding area between plastics and ceramics is 0.5cm 2 , ...

Embodiment 1

[0035] This example discusses the effects of different proportions of PA106 / 10T, PA106, and common PA66 materials on the performance of polyamide composites, and provides 5 groups of test examples (Test Example 1 to Test Example 5) and 2 groups of comparative examples (Comparative Example 1 / 2), according to the above preparation method to prepare a polyamide composite, the proportions of its components and the corresponding properties of the obtained polyamide composite are shown in Table 1.

[0036] Table 1 Component ratio and performance data table of each polyamide compound in Example 1

[0037]

[0038] From the data in Table 1, it can be seen that compared with PA66, PA106 and PA106 / 10T with different composition ratios have higher binding capacity. In the ceramic NMT process, it is generally considered that a material with a binding force of more than 30 MPa is usable, and a binding force of more than 35 MPa indicates that the material has a wide range of applicabilit...

Embodiment 2

[0040]This example discusses the effect of toughening agents on the properties of polyamide composites, and provides 1 group of comparative examples (comparative example 3) and 10 groups of test examples (2, 6-14), and polyamides are prepared according to the above preparation method. The composite, the proportion of each component and the corresponding properties of the obtained polyamide composite are shown in Table 2.

[0041] Table 2 Component ratio and performance data table of each polyamide compound in Example 2

[0042]

[0043]

[0044] It can be seen from Table 2 that, first, both toughening agents can significantly improve the ceramic bonding force of the material. Secondly, under different glass fiber content, the ratio of the two toughening agents has a significant effect on the ceramic bonding force of the material. When maleic anhydride is not contained in copolymerized polyethylene methyl acrylate, although the binding force of the material is improved, ...

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Abstract

The invention discloses ceramic nano injection molding polyamide and a preparation method thereof, and relates to the technical field of composite laser forming materials, the ceramic nano injection molding polyamide comprises the following components by weight: polyamide PA XY/XZ; 2%-10% of a flexibilizer containing maleic anhydride; 10%-50% of glass fiber; 0.05%-0.5% of an antioxidant; 0.1%-2.0% of a release agent; the polyamide PA XY/XZ is formed by polymerizing the following components: X is aliphatic diamine which contains 8 to 14 carbon atoms and does not contain a side chain; y is aliphatic dicarboxylic acid which contains 4-10 carbon atoms and does not contain a side chain, and the total number of carbon atoms in X is at least 2 more than that in Y; z is aromatic dicarboxylic acid or/and aliphatic cyclic dicarboxylic acid. According to the polyamide composite material provided by the invention, ultra-low molecular weight polyamide does not need to be added, the polyamide composite material still has good ceramic binding force in ceramic nano injection molding, the binding force reaches 30 MPa or above, the polyamide composite material has usability, the mechanical property of the polyamide composite material is greatly improved, and the ceramic nano injection molding binding force and the mechanical property of plastic are both considered.

Description

technical field [0001] The invention relates to the technical field of composite laser forming materials, in particular to a ceramic nano-injection polyamide and a preparation method thereof. Background technique [0002] 5G communication has higher and higher requirements on the material of mobile phones. Metal materials will block signals and are no longer suitable for mobile phone back covers, but only for metal middle frames. High-end needs; and the most commonly used glass back cover is easy to break. The ceramic material has high hardness, wear resistance and high-end feeling, which can solve the above problems and become a better choice for the back cover of mobile phones. Nano-injection molding (NMT) technology is a process that achieves effective bonding of special-shaped materials through injection molding without using a medium. The frame of the mobile communication equipment represented by the mobile phone is an application field with high thin-wall requirement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L51/06C08K7/14C08K5/5313C08K3/32
CPCC08L77/06C08L2205/025C08L51/06C08K7/14C08K5/5313C08K3/32
Inventor 李东阵
Owner GUANGZHOU CHENDONG NEW MATERIALS
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