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Wood flour filled PVA film composition, wood flour filled PVA film and preparation method of the wood flour filled PVA film

A composition and wood flour technology are applied in the field of wood flour-filled PVA film and its preparation, and the field of wood flour-filled PVA film composition can solve the problems affecting continuous production and processing, PVA decomposition, and high processing costs, and achieve accelerated biodegradation. speed, improve environmental protection, and achieve the effect of thermoplastic processing

Inactive Publication Date: 2020-04-28
BEIJING YISIDE LOGISTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, PVA low-temperature water-soluble film is mostly produced by solution casting method, which has extremely high processing cost and low production capacity. The blow molding method using traditional plastic film bags is a processing method with low energy consumption and high production capacity, but due to The melting temperature of PVA is close to the decomposition temperature. During the blow molding process, PVA is prone to decompose and form blisters, and air leakage affects continuous production and processing.

Method used

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  • Wood flour filled PVA film composition, wood flour filled PVA film and preparation method of the wood flour filled PVA film

Examples

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preparation example Construction

[0045] The second aspect of the present invention provides a method for preparing a wood flour filled PVA film, the method comprising:

[0046] The PVA film composition filled with wood powder is pelletized and blow molded.

[0047] In the specific embodiment of the present invention, the preparation is carried out according to the following steps:

[0048] (1) Stir all the compositions in a high-speed mixer at room temperature for 5-20 minutes;

[0049] (2) Use the parallel twin-screw pelletizing unit to extrude and pelletize to obtain wood flour filled with PVA particles;

[0050] In a specific embodiment of the present invention, the temperature of each section of the twin-screw granulation unit is 60-190°C, and the screw speed is 200-450rpm;

[0051] (3) Use a PVA film blowing machine to blow wood powder filled PVA particles into wood powder filled PVA film;

[0052] In a specific embodiment of the present invention, the temperature of each section of the screw of the PVA film blowing...

Embodiment 1

[0064] Wood flour filled PVA film composition, including:

[0065] 80 parts by weight of PVA2088, 20 parts by weight of wood flour, 10 parts by weight of triglycerin, 10 parts by weight of sorbitol, 2 parts by weight of rare earth stabilizer, 1 part by weight of antioxidant 1010, 0.25 part by weight of DLTP, 1 part by weight of polyethylene wax .

Embodiment 2

[0067] Wood flour filled PVA film composition, including:

[0068] 70 parts by weight of PVA2088, 15 parts by weight of PVA0388, 15 parts by weight of wood flour, 10 parts by weight of sorbitol, 15 parts by weight of polyethylene glycol 200, 1 part by weight of epoxy soybean oil, 1 part by weight of phosphorous acid-benzenediisooctyl ester , Antioxidant 1076 0.75 parts by weight, DSTP 0.25 parts by weight, and 1.5 parts by weight of triglyceride monostearate.

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Abstract

The invention relates to the field of biodegradable materials, and discloses a wood flour filled PVA film composition, a wood flour filled PVA film and a preparation method of the wood flour filled PVA film. The composition comprises, relative to 100 parts of a mixture of PVA and a wood flour filler, 5 to 45 parts of a plasticizer, 1 to 10 parts of a heat stabilizer, 0.5 to 5 parts of an antioxidant and 0.1 to 5 parts of a lubricant. According to the wood flour filled PVA film composition, the wood flour filled PVA film and the preparation method provided by the invention, the problem that a PVA raw material is easy to decompose and carbonize in the thermoplastic processing process is solved, and the thermoplastic processing of PVA is realized; meanwhile, the addition amount of the wood powder filler in the PVA material and the film is increased, and the excellent performance of the prepared wood powder filled PVA plastic is ensured while the cost is reduced.

Description

Technical field [0001] The invention relates to the field of biodegradable materials, in particular to a wood flour filled PVA film composition, a wood flour filled PVA film and a preparation method thereof. Background technique [0002] Biodegradable plastic is a type of plastic that can be degraded by the action of microorganisms that exist in nature, such as bacteria, molds, fungi and algae. The ideal biodegradable plastic is non-toxic and harmless after degradation, and has excellent performance. Polyvinyl alcohol (PVA) not only has the performance and characteristics of traditional plastics, but also can be split and degraded in water with different water temperatures or under natural conditions, and finally returns to the natural environment in the form of carbon dioxide and water. It is an excellent biodegradable plastic. At present, PVA low-temperature water-soluble films are mostly produced and prepared by solution casting method, which has extremely high processing cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L97/02C08K5/06C08K5/053C08L71/02C08K5/17C08J5/18
CPCC08J5/18C08J2329/04C08J2397/02C08J2429/04C08J2471/02C08J2497/02C08L29/04C08L97/02C08L2201/06C08L2203/16C08K5/06C08K5/053C08L71/02C08K5/17
Inventor 常江
Owner BEIJING YISIDE LOGISTICS TECH