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A kind of fully shading polypropylene composite material for lamps and its preparation method

A composite material and polypropylene technology, which is applied in the field of full shading polypropylene composite material for lamps and its preparation, can solve the problem of reducing the reflectivity and gloss of the material, reducing the reflectivity of the material, difficult shading of the PP material, flame retardant and reflective properties and other problems, to achieve the effect of reducing adverse effects, reducing the amount of addition, and good scattering

Active Publication Date: 2020-12-22
上海日之升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for PP materials to have excellent light-shielding, flame-retardant and reflective properties at the same time.
[0004] For PP materials, flame retardancy often means the addition of a large amount of flame retardants, which will inevitably affect the surface properties of the final material and reduce the reflectivity and gloss of the material. At the same time, if the PP material is to achieve shading ( That is, opaque) also requires a large amount of titanium dioxide or other minerals, which will further reduce the reflectivity of the material

Method used

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  • A kind of fully shading polypropylene composite material for lamps and its preparation method
  • A kind of fully shading polypropylene composite material for lamps and its preparation method
  • A kind of fully shading polypropylene composite material for lamps and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A preparation method of a full-shade polypropylene composite material for lamps. Block copolymerized polypropylene, flame retardants, light reflection additives, light absorption additives, and high-gloss additives are mixed in a high-speed mixer for 5 minutes and then added to a twin-screw extruder. In the extruder, under the condition that the screw speed is 35HZ, it is melt-extruded and granulated to obtain a full-shade polypropylene composite material for lamps, wherein the mass content of the ethylene-containing block component in the block copolymerized polypropylene is 15%. The flame retardant is a compound of tris (tribromophenyl) cyanurate and zinc methyl ethyl hypophosphite with a mass ratio of 1:1. The melting temperature range of the flame retardant lies in the injection molding of block copolymer polypropylene Within the processing temperature range, the light reflection additive is rutile TiO with a particle size of 0.15-0.25 μm at a mass ratio of 1:1 2 an...

Embodiment 2

[0044] A method for preparing a full-shading polypropylene composite material for lamps, the steps of which are basically the same as in Example 1, the difference is that the mass content of the block component containing ethylene in the block copolymerized polypropylene, FeS 2 The particle size and the amount of each reactant added, the mass content of the ethylene-containing block component in the block copolymerized polypropylene is 20%, FeS 2 The particle diameter is 0.1-0.3 μ m, and by weight, the add-on of each reactant is as follows:

[0045]

[0046] The thickness of the finally prepared full-shading polypropylene composite material for lamps is 1.0 mm, the reflectance is 97%, the light transmittance is 0.05%, and the flame retardancy reaches the UL-94V2 level.

Embodiment 3

[0048] A method for preparing a full-shading polypropylene composite material for lamps, the steps of which are basically the same as in Example 1, the difference is that the mass content of the block component containing ethylene in the block copolymerized polypropylene, FeS 2 The particle size and the amount of each reactant added, the mass content of the ethylene-containing block component in the block copolymerized polypropylene is 18%, FeS 2 The particle diameter is 0.2-0.4 μm, and by weight, the add-on of each reactant is as follows:

[0049]

[0050] The finally prepared full-shading polypropylene composite material for lamps has a thickness of 1.0mm, a reflectivity of 93.7%, a light transmittance of 0%, and a flame retardancy of UL-94V0.

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Abstract

The invention relates to a full-light shading polypropylene composite material for lamps and a preparation method thereof. The method includes: subjecting polypropylene block copolymer and functionalassistants to melt blending to obtain the full-light shading polypropylene composite material for lamps. Specifically, the composite material comprises the following components: 80-100 parts of polypropylene block copolymer; 5-20 parts of a light reflection assistant; 0.1-0.9 part of a light absorption assistant; and 0.01-0.05 part of a high light assistant. And the mass content of the ethylene-containing block component in the polypropylene block copolymer is 15-20%. The method provided by the invention is simple and feasible, and the prepared composite material has excellent light shading and reflecting properties at the same time. By adding a special flame retardant, the method provided by the invention can significantly improve the flame retardant properties of the composite material without significantly reducing the light shading and reflecting properties, and the prepared polypropylene composite material has light shading performance, flame retardance and reflecting properties,and has excellent popularization value.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a full-shading polypropylene composite material for lamps and a preparation method thereof. Background technique [0002] The lighting industry, especially the LED lighting industry, is currently developing rapidly and has a large market size. The LED lighting industry is known as the future of LED applications. At present, the commonly used composite materials in the LED lighting industry are polycarbonate materials with high reflectivity and low addition amount to achieve flame retardancy. [0003] However, with the expansion of the market, fierce competition and continuous increase in production costs, many lighting manufacturers have begun to try to replace polypropylene with materials such as PS (polystyrene plastic) or PP (polypropylene) on parts that do not require too many requirements. Carbonate materials and PP materials have gradually become popular candidate material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/00C08K13/02C08K3/22C08K5/3492C08K5/5313C08K5/14C08K3/30C08K5/03
CPCC08K3/22C08K3/2279C08K3/30C08K5/03C08K5/14C08K5/34924C08K5/5313C08K13/02C08K2003/2241C08K2003/3009C08K2201/003C08K2201/014C08L2201/02C08L2203/20C08L53/00
Inventor 陈超
Owner 上海日之升科技有限公司
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