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Fully-biodegradable air bubble film and preparation process thereof

A bubble film, all-biological technology, used in biological packaging, sustainable manufacturing/processing, flat products, etc., can solve the problem of large differences in solubility and melting temperature, reduction in heat sealing strength and impact resistance, shrinkage of heat sealing parts, Wrinkling and other problems, to achieve the effect of shortening crystallization time, improving degradation speed, and increasing hydrophilicity

Inactive Publication Date: 2020-05-08
周锐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The biodegradable bubble film is made of environmentally friendly biodegradable materials polylactic acid and polybutylene adipate-terephthalate with good biodegradability as raw materials. The prepared bubble film not only has degradability, but also has mechanical properties Excellent, but because of the large difference in solubility and melting temperature between polylactic acid and polybutylene adipate-terephthalate, the molten material is easily extruded during heat sealing, causing shrinkage and wrinkling of the heat-sealed part, making the heat Reduced seal strength and impact resistance

Method used

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  • Fully-biodegradable air bubble film and preparation process thereof
  • Fully-biodegradable air bubble film and preparation process thereof
  • Fully-biodegradable air bubble film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0046] In the preparation example 1-3, the titanate coupling agent is selected from the titanate coupling agent sold by Dongguan Lvwei Plastic Products Co., Ltd., and the model is NDZ-201. The nano-calcium carbonate is selected from the processing of Baifeng Mineral Products in Lingshou County. The article number sold by the factory is 14 nano-calcium carbonate, and the nano-silica is selected from the nano-silica of A200 sold by Quzhou Edhan Chemical Co., Ltd.

preparation example 1

[0047] Preparation Example 1: (1) Rotate lactic acid aqueous solution with a mass fraction of 88% at 65°C and an absolute pressure of 1000Pa for 2 hours, then mix it with stannous chloride and p-toluenesulfonic acid at 100°C under vacuum conditions, and then heat up React at 145°C for 2 hours, add pentaerythritol, then raise the temperature to 170°C for 2 hours, the mass ratio of polylactic acid, stannous chloride and p-toluenesulfonic acid is 1:0.005:0.005, and the mass ratio of lactic acid to pentaerythritol is 1:0.4 ;

[0048] (2) Add toluene to the resultant of step (1), heat up to 90°C, add acrylic acid, p-toluenesulfonic acid and hydroquinone, heat up to 120°C for 5 hours, vacuumize, and wash with acetone to obtain a semi-finished product Polylactic acid, the mass ratio of lactic acid and toluene is 1:2.5, the mass ratio of lactic acid, p-toluenesulfonic acid and hydroquinone is 3:0.01:0.003, the mass ratio of acrylic acid and pentaerythritol is 3:1;

[0049] (3) 2.3kg ...

preparation example 2

[0050] Preparation Example 2: (1) Rotate lactic acid aqueous solution with a mass fraction of 88% at 65°C and an absolute pressure of 1000Pa for 2 hours, then mix it with stannous chloride and p-toluenesulfonic acid at 110°C under vacuum conditions, and then heat up React at 150°C for 1.5h, add pentaerythritol, then raise the temperature to 175°C and react for 1.5h, the mass ratio of polylactic acid, stannous chloride and p-toluenesulfonic acid is 1:0.008:0.008, and the mass ratio of lactic acid to pentaerythritol is 1 :0.45;

[0051] (2) Add toluene to the resultant of step (1), heat up to 95°C, add acrylic acid, p-toluenesulfonic acid and hydroquinone, heat up to 135°C for 4 hours, vacuumize and wash with acetone to obtain a semi-finished product Polylactic acid, the mass ratio of lactic acid and toluene is 1:2.8, the mass ratio of lactic acid, p-toluenesulfonic acid and hydroquinone is 3:0.02:0.004, the mass ratio of acrylic acid and pentaerythritol is 4:1;

[0052] (3) 3....

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Abstract

The invention discloses a fully-biodegradable air bubble film and a preparation process thereof. The fully-biodegradable air bubble film comprises a surface layer, an air bubble layer and an inner layer which are compounded in sequence; the surface layer, the bubble layer and the inner layer are prepared from, by weight, 10 to 20 parts of polylactic acid, 70 to 80 parts of polybutylene adipate-terephthalate, 0.03 to 0.07 part of an antioxidant, 2 to 3 parts of a biocompatilizer, 3 to 5 parts of a heat sealing auxiliary agent, 1 to 2 parts of a toughening agent and 5 to 9 parts of an inorganicfiller; and the heat sealing auxiliary agent is prepared from nonylphenol polyoxyethylene ether, diacetyl epoxy vegetable oleic acid glyceride, acetyl tributyl citrate, 2,2'-(1,3-phenylene)-dioxazoline and 2,2,2-trifluoroethyl methacrylate. The fully-biodegradable air bubble film has the advantages of being high in degradation speed, excellent in mechanical property, high in heat sealing strength,good in heat preservation property and buffer shock resistance and capable of insulating sound and reducing noise.

Description

technical field [0001] The invention relates to the technical field of air bubble film, more specifically, it relates to a fully biodegradable air bubble film and a preparation process thereof. Background technique [0002] The bubble film is made of high-pressure polyethylene as the main raw material, and then added whitening agent, opening agent and other auxiliary materials, and is extruded and blistered into bubbles at a high temperature of about 230 ° C. It is a product with light texture, high transparency, non-toxic and tasteless. A new type of plastic packaging material, which can release moisture, buffer, and keep warm, is also called air bubble cushion, and is widely used in shock-resistant cushioning of electronic appliances, instrumentation, glass ceramics, artwork, hardware machinery, furniture, etc. Package. [0003] In the prior art, the Chinese invention patent application document with the application number 201610202026.3 discloses a film material for air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/18B32B27/20B32B27/06B32B33/00C08L67/02C08L67/04C08L71/02C08L97/02C08L3/02C08L75/08C08K13/02C08K5/11C08K5/1515C08K5/10C08K3/26C08K3/36C08K3/34C08K3/40C08K5/353C08J5/18B29D7/01B65D65/40B65D81/03
CPCB29D7/01B32B27/08B32B27/18B32B27/20B32B27/36B32B33/00B32B2250/03B32B2307/102B32B2307/304B32B2307/50B32B2307/558B32B2307/716B32B2307/7163B65D65/40B65D81/03B65D2581/055C08J5/18C08J2367/02C08J2403/02C08J2467/04C08J2471/02C08J2475/08C08J2497/02C08K3/34C08K3/36C08K3/40C08K5/10C08K5/11C08K5/1515C08K5/353C08K13/02C08K2003/265C08K2201/011Y02W90/10
Inventor 周锐李双利
Owner 周锐
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