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Polyamide composite material and preparation method and application thereof

A composite material and polyamide technology, applied in the field of composite materials, can solve problems such as no solution, and achieve the effect that the preparation method is simple and feasible, and is suitable for large-scale production and application

Active Publication Date: 2020-06-23
GUANGZHOU CHENDONG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the current popular white and light color appearance, there is no solution in the market

Method used

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  • Polyamide composite material and preparation method and application thereof
  • Polyamide composite material and preparation method and application thereof
  • Polyamide composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0026] The polyamide composites in Examples 1 to 11 are mainly prepared by the following steps: Weigh the corresponding amount of components by weight percentage, then mix the components, and granulate them with a twin-screw extruder to obtain polyamide composites. The granulation temperature is 250~270℃. Wherein, the weight percentage of each component in Examples 1-11 and the transmittance of the prepared polyamide composite are shown in Table 1 below.

[0027] Table 1 The dosage of each component in Examples 1-11 and the permeability of the prepared polyamide composite

[0028]

[0029] In the experiment, the selectivity ratio was used as the main parameter to examine the selective transmittance of the material to infrared light and visible light. Define selectivity ratio = infrared light transmittance / visible light transmittance, the higher the selectivity ratio, the stronger the selectivity for infrared light and visible light. It can be seen from the experimental da...

Embodiment 12～22

[0031] The polyamide composite materials in Examples 12 to 22 are mainly produced by the following steps: Weigh the corresponding amount of each component by weight percentage, then mix the components, and use a twin-screw extruder to granulate to obtain polyamide Compound, the granulation temperature is 250-270°C. Wherein, the weight percent of each component in Examples 12-22 and the transmittance of the obtained polyamide composite material are shown in Table 2.

[0032] Table 2 The weight percent of each component in Examples 12-22 and the transmittance of the obtained polyamide composite material

[0033]

[0034] It can be seen from Table 2 that when barium sulfate and sodium acetate with different particle sizes are used in combination, the selectivity ratios of almost all examples increase. Especially when barium sulfate with D50=500nm is used, the selectivity is greatly increased to more than 5, while the infrared transmittance remains above 30%, and the visible l...

Embodiment 23～26

[0036] The polyamide composite materials in Examples 23 to 26 are mainly made by the following steps:

[0037] The respective components are weighed according to the weight percentage, and then the components are mixed and granulated by a twin-screw extruder to obtain a polyamide compound. The granulation temperature is 260-320°C. Wherein, the weight percentage of each component in Examples 23-26 and the transmittance of the obtained polyamide composite material are shown in Table 3.

[0038] Table 3 The weight percent of each component in Examples 23-26 and the transmittance of the obtained polyamide composite material

[0039]

[0040] It can be seen from the data in Table 3 that the combination of barium sulfate and sodium acetate is not only effective for PA6, but also effective for PA66, PA610, PA6T / 66 and PA9T. The infrared-visible selectivity ratio of each system has been greatly improved, while maintaining a high Infrared transmittance and low visible transmittance...

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Abstract

The invention belongs to the technical field of composite materials, and discloses an infrared-permeable white opaque polyamide composite material as well as a preparation method and application thereof. The polyamide composite material is prepared from the following components in percentage by weight: 78 to 95% of polyamide, 1 to 20% of barium sulfate, 0.05 to 2% of acetate, 0.05 to 0.5% of an antioxidant and 0.1 to 2% of a release agent. Polyamide is used as a raw material and interacts with barium sulfate, acetate, an antioxidant and a release agent to prepare the composite material which has infrared light transmission capability and is white and opaque. By adopting the technical scheme mentioned above, toner can be added according to color requirements on the basis of white color to prepare infrared-transmitting and visible-light opaque materials with various colors, and the limitation that the existing infrared-transmitting and visible-light opaque materials are black is broken through. The preparation method is simple and feasible and is suitable for large-scale production and application.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to an infrared-permeable and white opaque polyamide composite material and its preparation method and application. Background technique [0002] Infrared photography, infrared remote sensing, infrared remote control, laser welding and many other fields are using infrared light, especially with the arrival of 5G communication and smart home, more and more application equipment based on infrared light. Since the infrared receivers are placed inside the device, more and more materials that can pass through infrared light but not pass through visible light are increasingly used as the first choice for the casing of this type of device. Traditional plastic materials that penetrate infrared light but are opaque to visible light use organic dyes that absorb visible light but not infrared light as a solution. Since most visible light is absorbed, it can only be made into black a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08K13/02C08K3/30C08K5/098C08K3/34
CPCC08K13/02C08K3/30C08K5/098C08K3/34C08K2003/3045C08K2201/003C08L77/02C08L77/06
Inventor 李东阵袁会宁
Owner GUANGZHOU CHENDONG NEW MATERIALS
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