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Anti-ageing polypropylene film and preparation method therefor

An anti-aging, polypropylene technology, applied in the field of polypropylene anti-aging film and its preparation, can solve the problems of PP aging resistance, light transmittance, tensile strength and low bending degree

Inactive Publication Date: 2015-09-09
苏州市德莱尔建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above technical problems, the present application provides a polypropylene anti-aging film and its preparation method, which solves the technical problems of the existing PP not aging resistance, light transmittance, tensile strength and bending degree etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put PP, kaolin, calcium carbonate, 2,6-di-tert-butyl-p-cresol and carbon black into the reaction kettle, heat to 50°C, stir for 15 minutes, add the remaining raw materials, raise the temperature to 70°C, and stir for 30 minutes.

[0023] Put the mixed material into a twin-screw extruder for extrusion, the barrel temperature is 170°C, 175°C, 180°C, 185°C and 185°C, the screw speed is 70r / min, and the film blowing conditions are 170°C, 200°C, 225°C, 230°C, screw speed 30r / min, traction speed 6m / min.

[0024] The tensile strength of the product is 35MPa, the bending strength is 45MPa; the heat distortion temperature is 120°C, the 500h light aging impact strength retention rate is 100%; the light transmittance is 97%, the Shore hardness is 92, and the elongation at break is 500%.

[0025] Example 2:

Embodiment 2

[0027] Put PP, kaolin, calcium carbonate, 2,6-di-tert-butyl-p-cresol and carbon black into the reaction kettle, heat to 70°C, stir for 35 minutes, add the remaining raw materials, raise the temperature to 90°C, and stir for 50 minutes.

[0028] Put the mixed material into a twin-screw extruder for extrusion, the barrel temperature is 170°C, 175°C, 180°C, 185°C and 185°C, the screw speed is 90r / min, and the film blowing conditions are 170°C, 200°C, 225°C, 230°C, screw speed 40r / min, traction speed 8m / min.

[0029] The tensile strength of the product is 40MPa, the bending strength is 50MPa; the heat distortion temperature is 125°C, the 500h light aging impact strength retention rate is 100%; the light transmittance is 97%, the Shore hardness is 93, and the elongation at break is 510%.

[0030] Embodiment 3:

Embodiment 3

[0032] Put PP, kaolin, calcium carbonate, 2,6-di-tert-butyl-p-cresol and carbon black into the reaction kettle, heat to 50°C, stir for 15 minutes, add the remaining raw materials, raise the temperature to 70°C, and stir for 30 minutes.

[0033] Put the mixed material into a twin-screw extruder for extrusion, the barrel temperature is 170°C, 175°C, 180°C, 185°C and 185°C, the screw speed is 70r / min, and the film blowing conditions are 170°C, 200°C, 225°C, 230°C, screw speed 30r / min, traction speed 6m / min.

[0034] The tensile strength of the product is 45MPa, the bending strength is 55MPa; the heat distortion temperature is 130°C, the 500h light aging impact strength retention rate is 100%; the light transmittance is 98%, the Shore hardness is 94, and the elongation at break is 520%.

[0035] Embodiment 4:

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Abstract

The present application discloses an anti-ageing polypropylene film and a preparation method therefor. The method comprises: weighing out the following components in parts by weight: PP, kaolin clay, calcium carbonate, 2,6-di-tert-butyl-p-cresol, carbon black, oleic acid, an antioxidant, BPO, talc powder, calcium stearate, an ultraviolet absorber, ethylene, titanium dioxide, propylene and dioctyl phthalate; mixing the components; and extruding the mixture to perform film blowing. For a product, the tensile strength is 35-55 MPa, and the bending strength is 45-65 MPa; the heat distortion temperature is 120-140 DEG C, and the retention rate of the impact strength after 500 h of photoaging is 100%; and the light transmittance is 97-99%, the Shore hardness is 92-96, and the elongation at break is 500-540%.

Description

technical field [0001] The application belongs to the field of polypropylene film preparation, and in particular relates to a polypropylene anti-aging film and a preparation method thereof. Background technique [0002] Polypropylene is a thermoplastic resin produced by the polymerization of propylene. According to the position of the methyl group, it is divided into three types: isotactic polypropylene, atactic polypropylene and syndiotactic polypropylene. When the methyl groups are arranged on the same side of the molecular main chain, it is called isotactic polypropylene. If the methyl groups are arranged randomly on both sides of the molecular main chain, it is called atactic polypropylene. When the methyl groups are arranged alternately on both sides of the molecular main chain, it is called interstitial polypropylene. Regular polypropylene. In the polypropylene resin produced in general industry, the isotactic structure content is about 95%, and the rest is atactic o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/04C08K3/26C08K3/34C08K5/12C08K3/22B29C47/92B29L7/00B29C48/92
CPCC08K13/02B29C48/92B29C2948/92209C08J5/18C08J2323/12C08K3/04C08K3/22C08K3/26C08K3/34C08K3/346C08K5/12C08K2003/2237C08K2003/265C08L2201/08C08L2203/16C08L23/12
Inventor 计慷
Owner 苏州市德莱尔建材科技有限公司
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