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Formula and preparation method for polymer diffuse reflection material

A polymer and diffuse reflection technology, applied in the field of optical materials, can solve the problems of complex preparation process, corrosion, and difficulty in realization, and achieve the effect of simple process and continuous production

Inactive Publication Date: 2013-05-15
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once any metal or reflector coated with chemical substances is in contact with the air for a long time, it will be oxidized and deteriorated or corroded by chemicals such as acids and alkalis in the air, or peeled off due to temperature and oxidation, and lose its reflective ability
U.S. Patent No. 4104102 has a detailed description of the production of reflective film, which adopts the accumulation layer composite process, but it is difficult to realize in large-scale production, and the yield is low; Chinese Patent No. CN201020032939. The reflective material with a structure has a complicated preparation process. Patent CN201010151111.4 first coats the reflective material on the substrate, and then coats the UV absorber on the reflective material. The preparation process includes a multi-layer coating process, which is difficult to achieve high efficiency. Continuous production
[0003] The existing research and application of reflective materials are mostly concentrated in the field of liquid crystal displays and engineering signs, while the research on diffuse reflective materials in the field of lighting is seldom

Method used

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  • Formula and preparation method for polymer diffuse reflection material
  • Formula and preparation method for polymer diffuse reflection material
  • Formula and preparation method for polymer diffuse reflection material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Formula: 90 parts of PP, titanium dioxide (TiO 2 ) 5 parts, antioxidant 0.1 part (the mass ratio of 1010 and 168 is 1:1), light stabilizer (JC-790A) 1 part, optical brightener (OB) 0.03 part, paraffin wax 2 parts. The particle size of titanium dioxide is 0.31 microns. Unless otherwise specified, the ratios mentioned below are all mass ratios, the dispersant refers to paraffin, and the particle size of titanium dioxide is 0.31 microns.

[0030] Preparation:

[0031] 1) Preparation of special material for polypropylene diffuse reflection plate

[0032] Polypropylene, titanium dioxide, antioxidant, light stabilizer, fluorescent whitening agent, paraffin wax according to 90 parts, 5 parts, 0.1 parts (the ratio of 1010 and 168 is 1:1), 1 part, 0.03 parts, 2 parts by weight After the proportioning is uniformly mixed in a mixer, melt, knead and granulate in a twin-screw extruder. Twin-screw extruder zone 1 temperature: 175°C, zone 2 temperature: 180°C, zone 3 temperature:...

Embodiment 2

[0038] Formula: PET 90 parts, titanium dioxide (TiO 2 ) 5 parts, antioxidant 0.1 part (the ratio of 1076 and 168 is 1:1), light stabilizer (JC-790A) 1 part, fluorescent whitening agent (OB-1) 0.03 part, paraffin wax 2 parts.

[0039] Preparation:

[0040] Preparation of special materials for PET diffuse reflectors

[0041] PET, titanium dioxide, antioxidant 1076, antioxidant 168, light stabilizer, fluorescent whitening agent and dispersing agent according to the weight ratio of 90 parts, 5 parts, 0.05 parts, 0.05 parts, 1 part, 0.03 parts, 2 After mixing uniformly in a mixer, melt, knead and granulate in a twin-screw extruder. Twin-screw extruder Zone 1 temperature: 220°C, Zone 2 temperature: 230°C, Zone 3 temperature: 240°C, Zone 4 temperature: 250°C, Zone 5 temperature: 250°C, Zone 6 temperature: 250°C, Zone 7 temperature : 250°C, eighth zone temperature: 255°C, ninth zone temperature: 255°C, tenth zone temperature: 255°C, twin-screw speed: 294r / min.

[0042] 2) Preparat...

Embodiment 3

[0047] Polypropylene PP, titanium dioxide TiO 2 , Antioxidant (the ratio of 1076 and 168 is 1:1), light stabilizer JC-790B, fluorescent whitening agent OB, dispersant according to 83.5 parts, 12 parts, 0.4 parts, 2 parts, 0.12 parts, 2 parts by weight After mixing evenly in a mixer, melt and knead in a twin-screw extruder to prepare a premix, and the twin-screw speed is 100r / min. The prepared premix is ​​mixed with the polymer PP at a ratio of 1:3, extruded by a single screw, the speed of the single screw is 70r / min, the temperature of the micro-imprinting double roller is set at 30°C, and the traction speed is 10m / min. min. Other processing steps for preparing the reflecting plate are the same as those in Embodiment 1. The components of the prepared reflectors are listed in Table 3.

[0048] Table three

[0049] PP (parts)

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Abstract

The invention provides a formula and a preparation method for a polymer diffuse reflection material, belonging to the field of optical materials and particularly relating to the formula and production and preparation method for a diffuse reflection material for illuminating devices. The polymer diffuse reflection material is characterized in that the diffuse reflection material comprises the following components in parts by weight: 85-97 parts of polymer PC (poly carbonate), 3-15 parts of titanium dioxide, 0.1-0.5 part of antioxygen, 0.5-2 parts of light stabilizer, 0.01-0.05 part of fluorescent brightener, and 0.5-5 parts of a dispersing agent. The polymer is polypropylene (PP), polyethylene glycol terephthalate (PET), acrylonitile-butadiene-styrene (ABS) copolymer, high impact polystyrene (HIPS), polymethyl methacrylate (PMMA) or makrolon PC (poly carbonate). The formula and preparation method have simple technology, the polymer diffuse reflection material can be produced continuously, and the highest reflectivity of the prepared reflection material can reach 102%, wherein the diffuse reflection rate is 96%.

Description

technical field [0001] The invention relates to the field of optical materials, in particular to a formulation of a diffuse reflection material applied to an illuminating device and a production and preparation method thereof. Background technique [0002] With the advancement of science and technology and the improvement of living standards, people have higher and higher requirements for environmental comfort. At present, most of the reflective materials used are aluminum, copper, nickel, chromium and other metal materials or metal-plated plastic surfaces. In this case, if the light source is a point light source, this reflective material will form a specular reflection, which is prone to problems such as glare and uneven illumination. Moreover, the oxidation of the metal material will also reduce the reflection efficiency. The design of general lighting reflective materials is only to use shiny metal on the surface (such as thin aluminum, or stainless steel), or coated wi...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L23/12C08L67/02C08L55/02C08L51/00C08L33/12C08K13/02C08K3/22C08K5/353B29C47/92B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 吴大鸣刘颖郑秀婷计红艳许红赵中里陈加山何慧华王伟
Owner BEIJING UNIV OF CHEM TECH
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