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Light-shading infrared-transmitting polyethylene composite material as well as preparation method and application thereof

A technology of composite materials and polyethylene, applied in optics, optical components, instruments, etc., can solve problems such as shading and infrared transmission properties that cannot be solved

Pending Publication Date: 2021-05-11
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a light-shielding and infrared-transmitting polyethylene composite material by

Method used

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  • Light-shading infrared-transmitting polyethylene composite material as well as preparation method and application thereof
  • Light-shading infrared-transmitting polyethylene composite material as well as preparation method and application thereof

Examples

Experimental program
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Example

[0040]Examples 1 to 6, comparison 1 to 2

[0041]According to the formulation in Table 1, the polyethylene composite material is prepared according to the following method:

[0042]The polyethylene resin, the organic pigment, and the additive were added to the high-speed mixer for 10 to 15 min at 500 r / min; then the granulation was extruded into the twin screw extruder, i.e., the polyethylene composite material. The twin screw extruder from the feed section to the die temperature of 160 ° C, 170 ° C, 190 ° C, 195 ° C, 200 ° C, 200 ° C, 205 ° C, 205 ° C, 200 ° C, 190 ° C; screw speed 400R / min The screw has a length of 40: 1; the screw is 65 mm.

[0043]Table 1 Each component content (parts by weight) in each of the light-shielded infrared polyethylene composites in each of the embodiments

[0044]

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Abstract

The invention provides a light-shading infrared-transmitting polyethylene composite material as well as a preparation method and application thereof. The light-shading infrared-transmitting polyethylene composite material comprises the following components in parts by weight: 98-99 parts of polyethylene resin, 0.2-0.8 part of an organic pigment, and 0-2 parts of an additive, wherein molecules of the organic pigment contain one or a combination of several of a ketone group, a nitrogen-hydrogen bond or an indole unit. According to the light-shielding infrared-transmitting polyethylene composite material disclosed by the invention, the organic pigment containing a ketone group, a nitrogen-hydrogen bond or an indole unit in a molecule is selected as the light-shielding agent, and the stretching vibration of the ketone group (C=O) and the stretching vibration of the nitrogen-hydrogen bond (N-H) in the molecular structure are both within the wavelength range of 8-12 microns, so that the influence on the transmittance of infrared light in the material is relatively small. Through compounding of several pigments, a dark color material is obtained, and the infrared transmission performance is very excellent.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a light-shielding infrared-transmitting polyethylene composite material and a preparation method and application thereof. Background technique [0002] In the 5G era, smart homes have entered the fast lane of rapid development. Infrared sensors are very suitable for the sensor field of smart home because they can detect human activities. [0003] As an excellent infrared-transmitting material, plastic is widely used in home appliance housings, sensor lenses and other fields. The infrared wavelength range of human body heat radiation just falls in the "fingerprint area" in the infrared absorption that is often said by people, and the infrared spectrum fingerprint area (1300-400cm -1 , 7.69~25μm) The characteristic of the absorption peak is strong, which can be used to distinguish the slight difference in the structure of different compounds, just like a human fingerprint, so it ...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K5/00C08K5/3415H05K5/02G02B1/04
CPCC08K5/0091C08K5/3415C08K5/0041H05K5/02G02B1/04G02B1/041C08L2207/062C08L23/06
Inventor 李栋栋黄险波叶南飚丁明笃陆湛泉杨霄云
Owner KINGFA SCI & TECH CO LTD