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Thermoplastic polyvinyl alcohol composition with special surface properties, film and preparation method thereof

A polyvinyl alcohol and thermoplastic technology, applied in the field of processing and preparation of polymer materials, can solve the problems of poor film opening, low process cost, low transparency, etc.

Active Publication Date: 2021-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the technical problems to be solved by the present invention is the problem of poor opening and low transparency of films prepared from thermoplastic polyvinyl alcohol compositions in the prior art. A thermoplastic polyvinyl alcohol composition with special surface properties is provided, The composition is modified by blending thermoplastic polyvinyl alcohol and polyolefin, and the film prepared from the composition has special surface properties, excellent opening performance, and good transparency, and because polyolefin partially replaces polyvinyl alcohol, the process cost is lower

Method used

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  • Thermoplastic polyvinyl alcohol composition with special surface properties, film and preparation method thereof
  • Thermoplastic polyvinyl alcohol composition with special surface properties, film and preparation method thereof
  • Thermoplastic polyvinyl alcohol composition with special surface properties, film and preparation method thereof

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Embodiment 1

[0079] The compatibilizer used in the present invention selects the anhydride-modified linear low-density polyethylene particles produced by DuPont Company in the present embodiment, and the trade mark is 41E687. TPVA particle (comparative example 1), the linear low density polyethylene particle (embodiment 1) of acid anhydride modification, PE particle (comparative example 2) in the PolyLab HAAKE mentioned above TM Rheomex OS PTW16 co-rotating twin-screw extruder for melt blending extrusion pelletization. In the first section of the extruder, the calibrated feeder was used to feed the anhydride-modified LLDPE pellets at a rate of 90 g / hr, while the re-calibrated powder feeder was used For the feeding of the blend of TPVA particles and PE particles, the speed is: 910g / hr, of which TPVA is 810g / hr, and PE is 100g / hr. The temperatures of sections 2-11 of the extruder are respectively: 190°C, 200°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C and 200°C, and the screw speed ...

Embodiment 2

[0081] TPVA particles (comparative example 1), anhydride modified linear low density polyethylene particles (embodiment 1), PE particles (comparative example 2) in the PolyLab HAAKE mentioned above TM Rheomex OS PTW16 co-rotating twin-screw extruder for melt blending extrusion pelletization. In the first section of the extruder, the calibrated feeder was used to feed the anhydride-modified LLDPE pellets at a rate of 80 g / hr, while the re-calibrated powder feeder was used For feeding the blend of TPVA particles and PE particles, the speed is: 920g / hr, of which TPVA is 720g / hr and PE is 200g / hr. The temperatures of sections 2-11 of the extruder are respectively: 190°C, 200°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C and 200°C, and the screw speed is set at 250 rpm. This extruder is equipped with a circular die with a diameter of 3mm, and after the strip is extruded from the die through air cooling, it is cut into TPVA composition particles of about 3mm with a pelletizer...

Embodiment 3

[0083] TPVA particles (comparative example 1), anhydride modified linear low density polyethylene particles (embodiment 1), PE particles (comparative example 2) in the PolyLab HAAKE mentioned above TM Rheomex OS PTW16 co-rotating twin-screw extruder for melt blending extrusion pelletization. In the first section of the extruder, the calibrated feeder was used to feed the anhydride-modified LLDPE pellets at a rate of 70 g / hr, while the re-calibrated powder feeder was used For feeding the blend of TPVA particles and PE particles, the speed is: 930g / hr, of which TPVA is 630g / hr and PE is 300g / hr. The temperatures of sections 2-11 of the extruder are respectively: 190°C, 200°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C, 210°C and 200°C, and the screw speed is set at 250 rpm. This extruder is equipped with a circular die with a diameter of 3mm, and after the strip is extruded from the die through air cooling, it is cut into TPVA composition particles of about 3mm with a pelletizer...

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Abstract

The invention relates to a thermoplastic polyvinyl alcohol composition with special surface properties, a film and a preparation method thereof, and mainly solves the problems of poor opening property and low transparency of the film prepared from the thermoplastic polyvinyl alcohol composition in the prior art. The thermoplastic polyvinyl alcohol composition with special surface properties comprises thermoplastic polyvinyl alcohol, a compatilizer and polyolefin, the ratio of the total mass of the thermoplastic polyvinyl alcohol and the compatilizer to the mass of the polyolefin is (51-95): (5-49), the mass ratio of the thermoplastic polyvinyl alcohol to the compatilizer is (85-99): (1-15), so that the problems are better solved, and the product can be used for industrial production of polyvinyl alcohol films.

Description

technical field [0001] The invention belongs to the field of processing and preparation of polymer materials, and relates to a thermoplastic polyvinyl alcohol composition with special surface properties, a film and a preparation method thereof. [0002] technical background [0003] Polyvinyl alcohol is a general-purpose functional polymer material obtained by saponification and alcoholysis of polyvinyl acetate produced by the polymerization of vinyl acetate. The film made from it not only has the characteristics of soft quality, oil resistance, solvent resistance, and abrasion resistance. , also has the characteristics of safe and convenient use, heat-sealable, etc., and has been widely used in the fields of packaging materials such as pesticides, dyes, water treatment agents, mineral additives, pet cleaners, concrete additives, detergents, and fertilizers. more advantageous. At present, commonly used polyvinyl alcohol films are all solution forming methods. Solution proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L51/06C08L23/06C08J5/18B29B9/06B29B9/12B29C48/08B29C48/00
CPCC08L29/04C08J5/18B29B9/06B29B9/12B29C48/08B29C48/0018B29C48/0011C08L2205/03C08L2203/16C08L2205/08C08J2329/04C08J2451/06C08J2423/06C08L51/06C08L23/06Y02W30/62
Inventor 胡圳王洪学王宇遥白瑜肖田鹏飞
Owner CHINA PETROLEUM & CHEM CORP