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Method for preparing weather-resistant synthetic paper

A synthetic paper and weather-resistant technology, which is applied in the field of preparation of weather-resistant synthetic paper, can solve the problems of poor weather resistance, easy yellowing, cracking, etc., and achieve the effect of simple preparation process, delay aging, and not easy aging

Inactive Publication Date: 2015-03-25
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, synthetic paper is mainly used to make outdoor advertisements, fishery paper, nautical charts, water-resistant newspa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take by weighing 40 kilograms of aliphatic thermoplastic polyurethane granules (aliphatic polyether type TPU, Shore hardness is 80A), 60 kilograms of inorganic composite fillers (wherein 600 mesh calcium carbonate powder 40 kilograms, 600 mesh sericite powder 20 kilograms) Mixing and granulation; the above-mentioned granules are blown into a film by blown film method, and the thickness of the sample is controlled to 0.20mm; after the film is cooled, it is cut by a cutting machine to obtain a weather-resistant synthetic paper product.

[0019] The mass percentage of aliphatic thermoplastic polyurethane particles in the resulting synthetic paper produced in this example is 40.0%; the mass percentage of inorganic fillers is 60.0%, wherein the mass percentage of calcium carbonate is 40.0%, sericite The mass percentage of powder is 20.0%. The color of the synthetic paper product is white, the thickness is 0.20mm, and the mass (based on the area of ​​A4 paper) is 2.55g.

Embodiment 2

[0021] Weigh 50 kilograms of aliphatic thermoplastic polyurethane granules (aliphatic polyether type TPU, Shore hardness is 90A), 50 kilograms of inorganic composite fillers (35 kilograms of 800 mesh calcium carbonate powder, 15 kilograms of 1000 mesh sericite powder) Mixing and granulation are carried out; the above-mentioned granules are cast into a film, and the thickness of the sample is controlled to 0.10 mm; after the film is cooled, it is cut with a cutting machine to obtain a weather-resistant synthetic paper product.

[0022] The mass percentage of aliphatic thermoplastic polyurethane particles in the synthetic paper produced in the present embodiment is 50.0%; the mass percentage of inorganic filler is 50.0%, wherein the mass percentage of calcium carbonate is 35.0%, sericite The mass percentage of powder is 15.0%. The color of the synthetic paper product is white, the thickness is 0.10mm, and the mass (based on the area of ​​A4 paper) is 1.50g.

Embodiment 3

[0024] Take by weighing 45 kilograms of aliphatic thermoplastic polyurethane granules (aliphatic polyether type TPU, Shore hardness is 83A), 55 kilograms of inorganic composite fillers (wherein 1000 mesh calcium carbonate powder 35 kilograms, 1250 mesh sericite powder 20 kilograms) Mixing and granulation; the above-mentioned granules are blown into a film by blown film method, and the thickness of the sample is controlled to 0.15mm; after the film is cooled, it is cut with a cutting machine to obtain a weather-resistant synthetic paper product.

[0025] The mass percentage of aliphatic thermoplastic polyurethane particles in the synthetic paper produced in the present embodiment is 45.0%; the mass percentage of inorganic filler is 55.0%, wherein the mass percentage of calcium carbonate is 35.0%, sericite The mass percentage of powder is 20.0%. The color of the synthetic paper product is white, the thickness is 0.15mm, and the mass (based on the area of ​​A4 paper) is 1.95g.

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Abstract

The invention discloses a method for preparing weather-resistant synthetic paper. The method disclosed by the invention comprises the following steps: mixing and granulating aliphatic thermoplastic polyurethane particles and an inorganic composite filler according to a certain ratio; preparing a film from the prepared particles by adopting blow molding or rolling or tape casting, and controlling the thickness of the film to be 0.10-0.20mm; and cooling the film, and cutting the film product to a proper size according to the requirement in the field of actual application, thereby obtaining the weather-resistant synthetic paper. The product disclosed by the invention is simple in preparation process, and the obtained product is not yellowing for a long time and is difficult to age and excellent in weather resistance.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic composite material production, and in particular relates to a preparation method of weather-resistant synthetic paper. Background technique [0002] Synthetic paper, also known as chemical film paper, polymer paper, plastic paper, etc. It is usually made of polyolefin and other resins and inorganic fillers as the main raw materials, and is processed by extrusion technology, and it is a multifunctional material with both plastic and paper characteristics. Synthetic paper has high tensile strength, is not afraid of water, is not insect-eaten, is elastic, can insulate heat, is dimensionally stable, and has a smooth surface, making it suitable for writing and printing. [0003] At present, synthetic paper is mainly used to make outdoor advertisements, fishery paper, nautical charts, water-resistant newspapers, product labels, etc. Its disadvantages are poor weather resistance and easy yello...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L75/08C08K3/26C08K3/34
Inventor 周虎李宁余斌周智华吴科建寻瑞平李文奎姜绮梦
Owner HUNAN UNIV OF SCI & TECH