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A kind of micro-foamed polyvinyl chloride film and preparation method thereof

A polyvinyl chloride film and polyvinyl chloride technology are applied in the field of micro-foamed polyvinyl chloride film and its preparation, which can solve the problems affecting the use of the film, the deterioration of the film's toughness, the precipitation and the like, and achieve the advantages of large-scale production and improved flexibility. Effect

Active Publication Date: 2022-08-09
浙江东部塑胶股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, PVC calendered film uses a lot of plasticizers, which has the problem of precipitation and affecting the use of the film, and reducing the amount of plasticizer used will cause the toughness of the film to deteriorate

Method used

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  • A kind of micro-foamed polyvinyl chloride film and preparation method thereof
  • A kind of micro-foamed polyvinyl chloride film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mix 1 part by weight of foaming agent 4,4-oxobisbenzenesulfonyl hydrazide and 30 parts by weight of talc powder by weight, add a grinder to grind into nano-scale powder, and then mix with 100 parts by weight of Arkema's EVA18-500 was added to a kneader at 80°C for 10 minutes, then rolled out by an open mill, cooled and stacked as a foamed composite material for use;

[0036] (2) 100 parts by weight of film-grade polyvinyl chloride PVC-SG-3, 12 parts by weight of composite plasticizer (dioctyl phthalate, dibutyl phthalate, dioctyl sebacate) by weight The ester is compounded in a mass ratio of 100:20:5), 1 part by weight of barium stearate as heat stabilizer, and 3 parts by weight of lubricant stearic acid are added to a high-speed mixer, pre-dispersed at 80°C for 10 minutes, then discharged and cooled Sealed and placed for more than 12h, as a polyvinyl chloride composite material for standby;

[0037] (3) A counter-rotating twin-screw extruder with a length-to-diame...

Embodiment 2

[0041] (1) Mix 2 parts by weight of foaming agent 4,4-oxobisbenzenesulfonyl hydrazide and 40 parts by weight of talc powder by weight, add a grinder to grind into nanoscale powder, and then mix with 110 parts by weight of Arkema's EVA18-500 was added to a kneader at 80°C for 10 minutes, then rolled out by an open mill, cooled and stacked as a foamed composite material for use;

[0042] (2) 100 parts by weight of film-grade polyvinyl chloride PVC-SG-3, 12 parts by weight of composite plasticizer (dioctyl phthalate, dibutyl phthalate, dioctyl sebacate) by weight Ester is compounded in a mass ratio of 100:20:5), 1 weight part of barium stearate as heat stabilizer, and 2 weight parts of lubricant polyethylene wax are added to a high-speed mixer, pre-dispersed at 80°C for 10 minutes, then discharged and cooled Sealed and placed for more than 12h, as a polyvinyl chloride composite material for standby;

[0043] (3) A counter-rotating twin-screw extruder with a length-to-diameter ra...

Embodiment 3

[0047] (1) Mix 2 parts by weight of foaming agent 4,4-oxobisbenzenesulfonyl hydrazide and 50 parts by weight of talc powder by weight, add a grinder to grind into nanoscale powder, then mix with 120 parts by weight of Arkema's EVA18-500 was added to a kneader at 60°C for 10 minutes, then rolled out by an open mill, cooled and stacked as a foamed composite material for later use;

[0048] (2) 100 parts by weight of film-grade polyvinyl chloride PVC-SG-3, 12 parts by weight of composite plasticizer (dioctyl phthalate, dibutyl phthalate, dioctyl sebacate) by weight The ester is compounded in a mass ratio of 100:20:5), 1 part by weight of barium stearate as heat stabilizer, and 2 parts by weight of lubricant paraffin are added to a high-speed mixer, pre-dispersed at 80°C for 12min, then discharged, cooled and sealed. For more than 12h, it can be used as a polyvinyl chloride composite material for standby;

[0049] (3) A counter-rotating twin-screw extruder with a length-to-diamet...

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Abstract

The invention belongs to the field of polymer materials, and specifically discloses a micro-foamed polyvinyl chloride film and a preparation method. First, the foaming agent and talc powder are ground into nano powder, which is dispersed in EVA, and then mixed with polyvinyl chloride in the screw. Using the good elasticity and toughness of EVA, the foaming agent can be formed by high temperature during calendering. It is different from foaming in the screw to form open-celled cells. During the calendering process, the nano-bubbles in the polyvinyl chloride film are retained, so that the toughness of the polyvinyl chloride film is improved, and there is no need to use too much plasticization. The agent increases the flexibility of the PVC film. This is of great significance to solve the precipitation and sticking of the polyvinyl chloride film prepared by using a large amount of plasticizer.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to polyvinyl chloride polymer plastics, in particular to a micro-foamed polyvinyl chloride film and a preparation method. Background technique [0002] Polyvinyl chloride (PVC) is one of the five major thermoplastic synthetic resins and the second largest general-purpose plastic in the world. It is rich in sources, low in price and widely used in construction materials, packaging materials, electronic materials, agricultural films, transportation, etc. Field usage is huge. [0003] For example, the application of polyvinyl chloride pipes (PVC pipes) in building drainage pipes, threading pipes, etc., greatly facilitates building construction, reduces costs, and breaks the history of using cast iron sewer pipes for many years. In recent years, with the rapid development of the logistics industry, the application of PVC in the packaging field has developed rapidly. In particular, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/08C08L23/06C08L91/06C08K13/02C08K3/34C08K5/098C08K5/12C08K5/11C08K5/09C08J9/10
CPCC08J9/105C08J9/0061C08J9/0023C08J9/0071C08J9/0095C08J2327/06C08J2423/08C08J2423/06C08J2491/06C08J2203/04C08J2205/044
Inventor 徐卫根
Owner 浙江东部塑胶股份有限公司