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Ultraviolet barrier plastic and preparation method thereof

A UV blocking and plastic technology, applied in the field of plastic materials, can solve the problems of shortened UV blocking timeliness, narrow effective wave band, limited blocking effect, etc., and achieve excellent UV blocking effect

Pending Publication Date: 2022-04-08
王晖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the UV blockers with a blocking effect of 70% (such as the UV-absorbing blocking materials produced by German basf and Japan) mainly sacrifice the effective structure to achieve the purpose of absorbing ultraviolet rays. The energy of ultraviolet rays is high and it is easy to damage the structure of the material.
The UV blocking products on the market have the problem of narrow effective band and limited blocking effect, and as the UV exposure time increases, the blocking effect of the material will decrease rapidly, resulting in shortened UV blocking timeliness

Method used

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  • Ultraviolet barrier plastic and preparation method thereof
  • Ultraviolet barrier plastic and preparation method thereof
  • Ultraviolet barrier plastic and preparation method thereof

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preparation example Construction

[0028] The present invention also provides a preparation method for the ultraviolet blocking plastic described in the above technical solution, comprising the following steps:

[0029] Mix resin materials, UV absorbers, additives, colorants and mineral powders to obtain premixed materials;

[0030] The premixed material is extruded through an extruder to obtain a UV-blocking plastic.

[0031] The invention mixes the resin material, the ultraviolet absorber, the additive, the colorant and the mineral powder to obtain the premixed material. In the present invention, the mixing is preferably carried out in a high-speed mixer; the mixing speed is preferably 100-200r / min, more preferably 120-170r / min; the mixing time is preferably 2-10min, more preferably 4-6 minutes; the mixing temperature is preferably 30-80°C.

[0032] After the premix is ​​obtained, the present invention extrudes the premix through an extruder to obtain an ultraviolet blocking plastic. In the present inventi...

Embodiment 1

[0035] In parts by weight, 98 parts of HDPE resin, 0.3 part of ultraviolet absorber BASF TinUvin1130, 0.8 part of additive (the specific composition is 10100.1 part of antioxidant, 0.3 part of silane coupling agent, 0.4 part of erucamide), 0.4 part Pigment titanium yellow and 0.5 parts of 600 mesh TiO 2 Mixed, all added to a high-speed mixer, stirred at 150r / min for 5 minutes to obtain a premix; the premix was added to a twin-screw extruder through the main feed port for co-extrusion, and the twin-screw extruder barrel The temperature is 110-150° C., the rotational speed of the screw is 300-400 r / min, and the vacuum degree is 0.5-0.8 MPa to obtain an ultraviolet-blocking plastic.

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Abstract

The invention provides an ultraviolet barrier plastic and a preparation method thereof, and relates to the technical field of plastic materials. The ultraviolet barrier plastic provided by the invention comprises the following preparation raw materials in parts by weight: 84-99.3 parts of a resin material; 0.1 to 3 parts of an ultraviolet absorbent; 0.2 to 2 parts of an additive; 0.3 to 1 part of pigment; and 0.1 to 10 parts of mineral powder. According to the invention, the mineral powder and the ultraviolet absorbent are compounded and added into the resin material, so that the effect of efficiently blocking ultraviolet rays can be achieved, and the ultraviolet blocking timeliness is improved through the synergistic effect by controlling the addition amount of the raw materials. Results of the embodiment show that the UV barrier rate of the ultraviolet barrier plastic provided by the invention is 95% or above, and the ultraviolet barrier plastic still has an excellent ultraviolet barrier effect after two weeks of ultraviolet radiation.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to an ultraviolet blocking plastic and a preparation method thereof. Background technique [0002] At present, the UV blocking agent with a blocking effect of 70% (such as the UV-absorbing blocking materials produced by Germany basf and Japan) mainly sacrifices the effective structure to achieve the purpose of absorbing ultraviolet rays. The energy of ultraviolet rays is high and it is easy to damage the structure of the material. The UV blocking products on the market have the problem of narrow effective band and limited blocking effect, and as the UV exposure time increases, the blocking effect of the material will decrease rapidly, resulting in shortened UV blocking timeliness. Contents of the invention [0003] The object of the present invention is to provide an ultraviolet-blocking plastic, which has a high UV-blocking rate and high UV-blocking timeliness. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/3475C08K3/22
Inventor 王晖
Owner 王晖
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