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Infrared light-permeable black plastic as well as preparation method and application thereof

A technology of infrared light and black material, applied in the field of infrared light-transmitting black plastic and its preparation, can solve the problems of uneven dispersion of color material, influence of infrared transmittance, cumbersome overall process, etc., and achieve the effect of good dispersion uniformity

Inactive Publication Date: 2021-06-04
青岛中新华美塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the method of directly mixing the colored pigment with the resin is likely to cause uneven dispersion of the pigment and form agglomerations in the plastic to affect the infrared transmittance.
Patent application CN109553910A discloses a kind of infrared transmissive black plastic and its preparation method and application. Although this method overcomes the process of melting the resin twice when preparing black or colored plastic, it avoids the mechanical damage of high temperature to the resin. , but because the black resin masterbatch used in the formula needs to be extruded separately, and then mixed with colorless and transparent resin to make products, the overall process is more cumbersome

Method used

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  • Infrared light-permeable black plastic as well as preparation method and application thereof
  • Infrared light-permeable black plastic as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Black plastic that can transmit infrared light, containing the following components in mass percentage: 90% of carrier resin, 5% of black material powder, 3% of dispersant and 2% of lubricant, wherein, maleic anhydride grafted EVA in the carrier resin , The mass ratio of maleic anhydride grafted LDPE to ethylene vinyl acetate copolymer resin is 0.8:0.8:1.2.

[0030] Preparation:

[0031] According to the formula requirements, add maleic anhydride grafted EVA, maleic anhydride grafted LDPE and ethylene vinyl acetate copolymer resin to the reaction kettle in sequence at room temperature, stir and mix at a medium speed of 150r / min to obtain a carrier resin;

[0032] Add black material powder, dispersant and lubricant to the obtained carrier resin under medium-speed stirring state, and increase the stirring rate from 150-300r / min at medium speed to 500-650r / min at a stirring rate of 7-10r / min. Programmatically increase the temperature from room temperature to 40-45 °C at a...

Embodiment 2

[0035] Black plastic that can transmit infrared light, containing the following components in mass percentage: 87% of carrier resin, 6% of black material powder, 4% of dispersant and 3% of lubricant, wherein, maleic anhydride grafted EVA in the carrier resin , The mass ratio of maleic anhydride grafted LDPE to ethylene vinyl acetate copolymer resin is 0.8:0.8:1.

[0036] The preparation method is the same as in Example 1.

Embodiment 3

[0038] Infrared light-transmitting black plastic, containing the following components in mass percentage: carrier resin 85%, black material powder 7%, dispersant 5% and lubricant 3%, wherein, maleic anhydride grafted EVA in the carrier resin , The mass ratio of maleic anhydride grafted LDPE to ethylene vinyl acetate copolymer resin is 1:1:0.8.

[0039] The preparation method is the same as in Example 1.

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Abstract

The invention provides infrared light-permeable black plastic as well as a preparation method and application thereof, and belongs to the field of high polymer material engineering. The black plastic contains or consists of the following components in percentage by mass: 80-90% of carrier resin, 5-10% of black material powder, 3-5% of a dispersing agent and 2-5% of a lubricating agent, and the carrier resin is formed by mixing maleic anhydride grafted EVA, maleic anhydride grafted LDPE and ethylene vinyl acetate copolymer resin. The black plastic capable of transmitting infrared light has good mechanical properties and infrared light transmittance, namely the infrared light transmittance at 800nm reaches 90.8%, the infrared light transmittance at 2500nm reaches 91.4%, and a sound foundation is laid for subsequent market application of the black plastic.

Description

technical field [0001] The invention belongs to the field of polymer material engineering, and in particular relates to a black plastic capable of transmitting infrared light and its preparation method and application. Background technique [0002] With more research on infrared rays, at present, infrared rays have been applied to each of us, such as infrared ovens for homes, infrared lights for bathrooms, infrared for drying car paint in industry, and infrared for medical treatment. physiotherapy. [0003] Due to the wide use of infrared rays, it is particularly important to prepare infrared-transmitting materials. Among them, the demand for infrared-transmitting plastics is more extensive. The appearance color of infrared transmissive plastic is black, which can effectively cut off visible light and transmit infrared light, with stable optical performance and good applicability. Infrared transmissive plastics, although black in appearance, are actually very different fro...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K5/00
CPCC08L23/0853C08L51/06C08L2201/08C08L2203/16C08L2203/18C08L2205/025C08L2205/03C08K5/0041
Inventor 曹沛王东张彩城郭彬赵成方聂政单联滨常胜
Owner 青岛中新华美塑料有限公司
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