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PVC film and its preparation method

A roll body and plasticizer technology, applied in the field of PVC film and its preparation, to achieve good temperature resistance, reduce the risk of high temperature thermal deformation, and excellent heat resistance

Active Publication Date: 2020-04-03
GUANGDONG TIANAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a PVC film and its preparation method, in order to reduce the problem that the PVC film is easy to shrink and produce thermal deformation under high temperature conditions

Method used

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  • PVC film and its preparation method

Examples

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preparation example Construction

[0017] The preparation method of above-mentioned PVC film of the present application, by adopting TOTM plasticizer, and its content is controlled in the scope of 30%~100% of plasticizer gross weight, then the time of stirring for the second time is controlled at 300~100%. Within 400s, the plasticizer and stabilizer are evenly dispersed in the PVC, each component can be mixed evenly, and the TOTM plasticizer has excellent heat resistance, so the prepared PVC film has good temperature resistance and reduces the Risk of thermal deformation at high temperatures.

[0018] In the preparation method of the above-mentioned PVC film, the step of stirring each component can adopt the existing two-stage stirring treatment method of low-speed stirring and high-speed stirring, and the speed and time of stirring can be appropriately adjusted according to the proportion of specific raw materials. . In the above preparation method, the first stirring speed and the second stirring speed can b...

Embodiment 1

[0031] Mix PVC, plasticizer and stabilizer to obtain mixture; wherein, in parts by weight, PVC is 100 parts, plasticizer is 36 parts, barium zinc stabilizer is 6 parts, plasticizer includes TOTM, and TOTM accounts for 100% of the total weight of the plasticizer, the mixing step includes the steps of the first stirring and the second stirring, wherein the speed of the first stirring is 500 rpm, and the speed of the second stirring is 1000 rpm. The time of the first stirring is 50s; the time of the second stirring is 400s.

[0032] The mixture is sequentially subjected to banburying, plasticization and calendering to obtain a PVC film; wherein, the temperature of the mixture is controlled to be 125°C before banburying; in the plasticizing step, the plasticization temperature is controlled to be 148°C. A five-roll calender is used for calendering, the temperature of the first roll body and the second roll body is 185°C, the temperature of the third roll body is 180°C, the tempera...

Embodiment 2

[0034]PVC, plasticizer and stabilizer are mixed, obtain mixture; Wherein, in parts by weight, PVC is 100 parts, TOTM plasticizer is 10.8 parts, DOTP plasticizer is 25.2 parts, barium zinc stabilizer is 1 part, TOTM accounts for 30% of the total weight of the plasticizer, and the mixing step includes a first stirring step and a second stirring step, wherein the speed of the first stirring is 200 rpm, and the speed of the second stirring is 700 rpm. The first stirring time is 10s; the second stirring time is 300s.

[0035] The mixture is sequentially subjected to banburying, plasticization and calendering to obtain a PVC film; wherein, the temperature of the mixture is controlled to be 100° C. before banburying; in the plasticizing step, the plasticizing temperature is controlled to be 132° C. A five-roll calender is used for calendering, the temperature of the first roll body and the second roll body is 178°C, the temperature of the third roll body is 175°C, the temperature of ...

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Abstract

The invention provides a PVC film and a preparation method thereof. The preparation method comprises mixing PVC, a plasticizer and a stabilizer to obtain a mixture; making the mixture sequentially undergo banburying, plasticizing and calendering to obtain a PVC film; in parts by weight, PVC is 100 parts, and plasticizer is 18 parts by weight. ~36 parts, the stabilizing agent is 1~6 parts, plasticizer comprises TOTM, and TOTM accounts for 30%~100% of plasticizer gross weight, mixing step comprises the step of stirring for the first time and the second time, the second time The stirring speed is higher than the first stirring speed, and the second stirring time is 300-400s. By adopting TOTM plasticizer and controlling its content within the above range, and controlling the time of the second stirring within the above range, each component can be mixed evenly and TOTM plasticizer has excellent heat resistance, thus making the The prepared PVC film has good temperature resistance, which reduces the risk of thermal deformation when encountering high temperature.

Description

technical field [0001] The invention relates to the field of PVC films, in particular to a PVC film and a preparation method thereof. Background technique [0002] During the application process of the existing PVC film, it will be used in different environments or undergo various post-treatments. However, many applications often encounter high temperature conditions, and under high temperature conditions, the existing PVC film is prone to shrinkage and thermal deformation, thereby affecting the quality of the PVC film. Contents of the invention [0003] The main purpose of the present invention is to provide a PVC film and its preparation method, so as to reduce the problem of thermal deformation caused by easy shrinkage of PVC film under high temperature conditions. [0004] In order to achieve the above object, according to one aspect of the present invention, a preparation method of PVC film is provided. The preparation method includes: mixing PVC, a plasticizer and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/12B29B7/00
CPCB29B7/005C08J5/18C08J2327/06C08K5/12C08L2201/08C08L2203/16C08L27/06
Inventor 谭荣汉徐芳林梅绪钟志锋张笑环罗伟炽
Owner GUANGDONG TIANAN NEW MATERIAL
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