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Soft environment-friendly polyvinyl chloride film with self-cleaning properties

A polyvinyl chloride film, self-cleaning technology, applied in the field of PVC calendered film, can solve the problems of easy peeling, poor compatibility, complex process, etc., and achieve the effect of improving hydrophobicity, reducing film surface energy, and low surface energy

Inactive Publication Date: 2019-06-14
TIANJIN TIANSU SCI & TECH GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although better self-cleaning function can be obtained by using PVDF, there is a problem of complex process, and the compatibility between PVDF and PVC substrate is poor, and it is easy to peel off. It is necessary to achieve the adhesion between the two through a transition layer or multiple coatings. knot, and PVDF is commonly used as a solvent with Class II toxicity (poisoning hazard) and volatile DMF, therefore, environmental pollution problems will also occur at the same time

Method used

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  • Soft environment-friendly polyvinyl chloride film with self-cleaning properties
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  • Soft environment-friendly polyvinyl chloride film with self-cleaning properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw materials and ratio:

[0031]

[0032]

[0033] Among them, the PVDF resin is the 761 model of the French Arkema company;

[0034] Preparation:

[0035] (1) Kneading material preparation: After measuring polyvinyl chloride resin, PVDF resin, main plasticizer, auxiliary plasticizer, stabilizer, light stabilizer, antioxidant, compatibilizer, processing aid, colorant, Put into a high-speed mixer, perform high-speed mixing in the high-speed mixer, and transfer it to a cooling mixer for cooling after high-speed mixing; wherein, the high-speed mixing termination temperature is 100-150°C; the cold stirring termination temperature is 20-70°C;

[0036] (2) Plasticizing: Feed the mixture obtained in step (1) into a planetary extruder for plasticization; wherein, the temperature in each zone of the planetary extruder is 140-200° C., and the extrusion speed is 40-60 rpm;

[0037] (3) Calendering: Put the fully plasticized material obtained in step (2) into a filter to f...

Embodiment 2

[0042] Raw materials and ratio:

[0043]

[0044]

[0045] Among them, the PVDF resin is the 761 model of the French Arkema company;

[0046] Preparation:

[0047] (1) Kneading material preparation: After measuring polyvinyl chloride resin, PVDF resin, main plasticizer, auxiliary plasticizer, stabilizer, light stabilizer, antioxidant, compatibilizer, processing aid, colorant, Put into a high-speed mixer, perform high-speed mixing in the high-speed mixer, and transfer it to a cooling mixer for cooling after high-speed mixing; wherein, the high-speed mixing termination temperature is 100-150°C; the cold stirring termination temperature is 20-70°C;

[0048] (2) Plasticizing: Feed the mixture obtained in step (1) into a planetary extruder for plasticization; wherein, the temperature in each zone of the planetary extruder is 140-200° C., and the extrusion speed is 40-60 rpm;

[0049](3) Calendering: Put the fully plasticized material obtained in step (2) into a filter to fi...

Embodiment 3

[0054] Raw materials and ratio:

[0055]

[0056]

[0057] Among them, the PVDF resin is the 761 model of the French Arkema company;

[0058] Preparation:

[0059] (1) Kneading material preparation: After measuring polyvinyl chloride resin, PVDF resin, main plasticizer, auxiliary plasticizer, stabilizer, light stabilizer, antioxidant, compatibilizer, processing aid, colorant, Put into a high-speed mixer, perform high-speed mixing in the high-speed mixer, and transfer it to a cooling mixer for cooling after high-speed mixing; wherein, the high-speed mixing termination temperature is 100-150°C; the cold stirring termination temperature is 20-70°C;

[0060] (2) Plasticizing: Feed the mixture obtained in step (1) into a planetary extruder for plasticization; wherein, the temperature in each zone of the planetary extruder is 140-200° C., and the extrusion speed is 40-60 rpm;

[0061] (3) Calendering: Put the fully plasticized material obtained in step (2) into a filter to f...

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Abstract

The invention relates to a soft environment-friendly polyvinyl chloride film with self-cleaning properties, which comprises the following components: 100 parts by mass of polyvinyl chloride resin; 10-30 PHR of PVDF resin; 33-62 PHR of a main plasticizer; 4-13 PHR of an auxiliary plasticizer; 2.2-4 PHR of a stabilizer; 0.3-1 PHR of a light stabilizer; 0.5-2 PHR of an antioxidant; 3-8 PHR of a compatilizer; 0.5-2 PHR of a processing aid; and 0.10-0.3 PHR of a coloring agent; the stabilizer is a calcium zinc stearate stabilizer; and the compatilizer is chlorinated polyethylene CPE. Based on the lotus leaf effect principle, the compatilizer chlorinated polyethylene CPE is used for carrying out compatibility modification on a PVDF / PVC blended film, so that the compatibility of a blended systemis improved; the calcium zinc stearate stabilizer can further reduce the surface energy of the film and improve the hydrophobicity of the material surface.

Description

technical field [0001] The invention belongs to the technical field of PVC calendered films, and in particular relates to a soft, environment-friendly polyvinyl chloride film with self-cleaning properties. Background technique [0002] Soft PVC film is mainly used in membrane structure buildings. It has the advantages of low price, soft material and easy construction, and has a wide range of applications. During the long-term use of soft PVC film, with the migration of small molecular substances such as plasticizers in PVC to the surface and the irradiation of ultraviolet rays, the surface of the film is easily polluted by dust in the air, automobile exhaust, acid rain, etc., affecting the film material. beauty and use. At present, the method of surface treatment of PVC membrane structural materials to improve its antifouling and self-cleaning performance is mainly to coat PVC coating with polyacrylic resin, and to use fluororesin (mainly PVDF resin) for surface treatment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L27/16C08L91/00C08L23/28C08K5/00C08K5/12C08K5/10C08J5/18
Inventor 张虹王俊影刘亚丽于姗姗李云王琦
Owner TIANJIN TIANSU SCI & TECH GROUP
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