Full-degradable plastic film with good freezing resistance and toughness and production method thereof

A plastic film, fully degradable technology, applied in the field of fully degradable plastic film, can solve the problems of poor processing performance, few research reports, high brittleness and water resistance, etc., achieve good frost resistance and toughness, wide source of raw materials, increase compatibility degree of effect

Inactive Publication Date: 2015-09-09
TONGLING FOUNDER PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of natural polymers: poor processing performance, brittleness and water resistance, etc., their application range is limited.
To solve this problem, a single modification method such as plasticizing, acid adjustment, crosslinking, filling or blending is often used. However, this single modification method is limited, and the fully degradable plastic film prepared has a single function and high cost. Industrial production
Nano-silica materials have special functional effects of nanoparticles, which can be used to improve the mechanical properties and water resistance of natural polymer films and polyvinyl alcohol films. There are very few research reports on composite films with polyvinyl alcohol

Method used

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Comparison scheme
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Embodiment Construction

[0013] The described fully degradable plastic film with good frost resistance and toughness is characterized in that it is made of the following raw materials in parts by weight: polyvinyl alcohol 107, plantain starch 74, nano silicon dioxide 2.4, zinc stearate 0.6, Hydroxybutadiene styrene latex 9, 1,2-propylene glycol 4, polyamide wax powder 1, Enteromorpha fiber 9, medical stone 3, appropriate amount of water.

[0014] The production method includes the following steps:

[0015] (1) Add plantain taro starch to a suitable amount of water and stir to form a paste, heat and pre-gelatinize for 10-20 minutes, add zinc stearate and 1,2-propanediol, stir and mix at constant temperature for 2-3 hours, and then naturally dry by suction Sex plantain starch;

[0016] (2) Dry Enteromorpha fiber in vacuum at 105°C for 2-4 hours, add hydroxybutadiene styrene latex and nano silica, stir and grind for 2-3 hours, and dry;

[0017] (3) Put the polyvinyl alcohol in a water bath at 80-90℃ for 30-40 m...

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Abstract

The invention discloses a full-degradable plastic film with good freezing resistance and toughness. Polyvinyl alcohol and canna edulis ker starch are adopted as main film forming matters, and compared with the traditional technology, a physical-chemical method is adopted for modifying nano silica and canna edulis ker starch and other active ingredients are combined, so that hydroxyls in the canna edulis ker starch and polyvinyl alcohol can be preferentially bonded with right amount of hydroxyls on the surface of nano silica to form hydrogen bonds, compatibility of the canna edulis ker starch and polyvinyl alcohol can be enhanced, part of hydroxyls in the canna edulis ker starch and polyvinyl alcohol are blocked, and the water resistance of the film is improved. The obtained full-degradable plastic film has the advantages of wide raw material source, simple technology, full biodegradability and good freezing resistance and toughness.

Description

Technical field [0001] The invention relates to the technical field of natural polymer materials, in particular to a fully degradable plastic film with good frost resistance and toughness and a manufacturing method thereof. Background technique [0002] Synthetic polymer materials bring great convenience to people’s lives, but also cause serious pollution to the environment. In addition to the continuous reduction of petroleum reserves for manufacturing traditional plastics, renewable environmentally friendly natural polymer materials have become a research hotspot. , Cellulose, starch, protein, etc. are the most practically researched and applied natural polymers at present, so natural polymer fully degradable materials have become one of the research hotspots of new environmentally friendly materials. [0003] Natural polymers have received widespread attention in the fields of food packaging and mulch film applications due to their wide sources of raw materials, strong biodegrad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08L9/08C08L77/00C08K13/02C08K3/36C08K5/098C08K5/053C08K3/34C08J5/18
Inventor 陈可夏陈可亮潮建平
Owner TONGLING FOUNDER PLASTICS TECH
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