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Manufacturing method of polyvinylidene difluoride special-purposed white master batch for solar-energy backboard membrane

A polyvinylidene fluoride, solar back sheet film technology, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems of coloring efficiency and uniformity failing to meet quality requirements, unsatisfactory titanium dioxide dispersion ability, etc. The effect of low cost, high coloring efficiency and high coloring uniformity

Active Publication Date: 2012-06-27
江苏昊华光伏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, people generally use tung oil or some low-molecular-weight paraffin as the surface treatment agent of titanium dioxide, but these treatment agents are not ideal for the dispersion ability of titanium dioxide in the plastic body. Cannot meet quality requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 28 dry grams of titanium dioxide to the high-speed mixer, then add 50 kg of polyvinylidene fluoride, 5 kg of polymethyl methacrylate, 3 kg of low molecular weight polyethylene wax and 2 kg of ammonium perfluorooctanoate , stirred and mixed for 10 minutes, and then internally kneaded for 20 minutes at 80° C. with a three-roll internal mixer. The banburying product was crushed with a crusher, and then extruded and granulated with a twin-screw extruder at 200°C to prepare a film-making special color masterbatch with an inorganic titanium dioxide content of 31%.

Embodiment 2

[0021] Add 40 dry grams of titanium dioxide to the high-speed mixer, then add 55 kg of polyvinylidene fluoride, 10 kg of polymethyl methacrylate, 15 kg of low molecular weight polyethylene wax and 10 kg of ammonium perfluorooctanoate , stirred and mixed for 10 minutes, and then internally kneaded for 20 minutes at 100° C. with a three-roll internal mixer. The banbury-mixed product was crushed with a crusher, and then extruded and granulated with a twin-screw extruder at 180°C to prepare a film-making special color masterbatch with an inorganic titanium dioxide content of 30%.

Embodiment 3

[0023] Add 40 dry grams of titanium dioxide to the high-speed mixer, then add 50 kg of polyvinylidene fluoride, 5 kg of polymethyl methacrylate, 3 kg of low molecular weight polyethylene wax and 2 kg of ammonium perfluorooctanoate , stirred and mixed for 10 minutes, and then internally kneaded for 20 minutes at 90° C. with a three-roll internal mixer. The banbury-mixed product was crushed with a crusher, and then extruded and granulated with a twin-screw extruder at 160°C to prepare a film-making special color masterbatch with an inorganic titanium dioxide content of 40%.

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Abstract

The invention discloses a manufacturing method of polyvinylidene difluoride special-purposed white master batches for a solar-energy backboard membrane. According to the invention, polyvinylidene difluoride, polymethyl methacrylate and inorganic titanium pigment are adopted as raw materials; low-molecular-weight polyethylene wax and a fluorine-containing active dispersant are adopted as a dispersant and a surface modifier for the inorganic titanium pigment; the materials are subject to high-speed mixing and dispersion; the mixture is subject to extrusion granulation by using a double-screw extruder, such that a finished product is obtained. The special-purposed coloring master batches provided by the invention are advantaged in that: coloring capacity of the titanium pigment is high; dispersion uniformity of the titanium pigment in a membrane product is high; the cost is low; and the preparation technology is simple. The method has a good application prospect in the field of solar-energy backboard membrane processing.

Description

technical field [0001] The invention relates to a method for manufacturing a color masterbatch, in particular to a method for manufacturing a special white masterbatch for polyvinylidene fluoride solar backboard film. Background technique [0002] With the development of the photovoltaic industry, the demand for solar backplane films made of polyvinylidene fluoride has increased sharply. At present, there is no domestic company that uses polyvinylidene fluoride to prepare solar backplane films. The domestic photovoltaic industry mainly relies on imports, let alone The back sheet film is prepared by mixing domestic polyvinylidene fluoride masterbatch. Therefore, the special color masterbatch for polyvinylidene fluoride developed by our company has a leading position in the industry. [0003] Pure polyvinylidene fluoride film products are colorless and transparent, with high light transmittance and easy to be penetrated by sunlight. The solar backplane film requires a light t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08L33/12C08K9/04C08K3/22H01L31/048H01L31/049
CPCY02E10/50
Inventor 龚福根邓志刚王卫国王海林
Owner 江苏昊华光伏科技有限公司
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