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Starch-filled medium-temperature water-soluble PVA composition, particles and preparation method of particles

A technology of composition and starch, which is applied in the field of biodegradable materials, can solve the problems of high processing cost, low production capacity, and difficult processing of blown film, and achieve the effects of small investment, high production capacity, and increased use temperature

Inactive Publication Date: 2020-06-16
BEIJING YISIDE LOGISTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] PVA 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. However, due to the high production capacity of PVA The melting temperature is close to the decomposition temperature, and the processing of blown film is more difficult

Method used

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  • Starch-filled medium-temperature water-soluble PVA composition, particles and preparation method of particles

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preparation example Construction

[0050] In a second aspect, the present invention provides a method for preparing starch-filled medium-temperature water-soluble PVA particles, the method comprising:

[0051] The step of mixing and granulating the above-mentioned starch-filled medium-temperature water-soluble PVA composition.

[0052] In the method of the present invention, there is no particular limitation on the preparation method of the above-mentioned starch-filled medium-temperature water-soluble PVA particles, which can be various preparation methods conventionally adopted by those skilled in the art, and will not be described again. In a specific embodiment of the present invention, it is prepared according to the following steps:

[0053] (1) Stir all the compositions described in a high-speed mixer at room temperature for 5-20 minutes;

[0054] (2) Use parallel twin-screw granulator to extrude and granulate to obtain medium-temperature water-soluble PVA particles filled with starch.

[0055] In a sp...

Embodiment 1

[0065] A medium temperature water-soluble PVA composition filled with starch, comprising:

[0066] 80 parts by weight of PVA1788, 20 parts by weight of tapioca starch, 25 parts by weight of sorbitol, 2 parts by weight of organic tin heat stabilizer, 2 parts by weight of epoxy soybean oil, 1 part by weight of antioxidant 1010, 2 parts by weight of DSTP, N,N '-bis(2,6-diisopropylphenyl) carbodiimide 2 parts by weight, SHP-60 1 part by weight.

Embodiment 2

[0068] A medium temperature water-soluble PVA composition filled with starch, comprising:

[0069] 90 parts by weight of PVA2088, 10 parts by weight of potato starch, 15 parts by weight of mannitol, 20 parts by weight of glycerin, 2 parts by weight of rare earth heat stabilizer, 3 parts by weight of sorbitan stearate, 3 parts by weight of antioxidant 697, 168 0.5 parts by weight, polymerized carbodiimide UN-03 2 parts by weight, SHP-50 1.5 parts by weight.

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Abstract

The invention belongs to the field of biodegradable materials, and discloses a starch-filled medium-temperature water-soluble PVA composition, particles and a preparation method of the particles. Thestarch-filled medium-temperature water-soluble PVA composition comprises PVA, starch, a plasticizer, a thermal decomposition inhibitor, a thermo-oxidative aging resisting agent, a hydrolysis resistingagent and an organic silicon water repellent; relative to 100 parts by weight of PVA and starch, the content of the plasticizer is 15-55 parts by weight, the content of the thermal decomposition inhibitor is 1-8 parts by weight, the content of the thermo-oxidative aging resistant agent is 0.5-6 parts by weight, the content of the hydrolysis resistant agent is 2-6 parts by weight, and the contentof the organic silicon water repellent is 0.1-2 parts by weight. After the starch-filled medium-temperature water-soluble PVA particles provided by the invention are subjected to blow molding to forma film, the initial water-soluble temperature of the film is greater than 40 DEG C.

Description

technical field [0001] The invention relates to the field of biodegradable materials, in particular to a starch-filled medium-temperature water-soluble PVA composition, particles and a preparation method thereof. Background technique [0002] Polyvinyl alcohol (PVA) is soluble in water at different temperatures, has high mechanical properties, good transparency, high oil and corrosion resistance, and can be split and degraded under natural conditions, and finally biodegraded into carbon dioxide and water. The natural environment is a biodegradable environmentally friendly material. [0003] PVA low-temperature water-soluble film refers to a film that starts to dissolve in water at a relatively low temperature (23°C), also known as a normal-temperature water-soluble film, and its raw material is partially alcoholysed PVA; ) above the film that just begins to dissolve in water, its raw material is complete alcoholysis type PVA. [0004] PVA water-soluble film is mostly produ...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L3/02C08L91/00C08K5/053C08K5/134C08K5/372C08K5/103C08K5/20C08K5/526C08K5/17C08K5/1515C08K5/25C08K13/02C08K3/22C08J5/18
CPCC08J5/18C08J2329/04C08J2403/02C08J2429/04C08J2491/00C08K5/053C08K5/103C08K5/1345C08K5/1515C08K5/17C08K5/20C08K5/25C08K5/372C08K5/526C08K13/02C08K2003/2224C08K2201/014
Inventor 常江
Owner BEIJING YISIDE LOGISTICS TECH