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Full-degradable cellulose foam material and preparation method thereof

A cellulose foam, fully degradable technology, applied in the field of fully degradable cellulose foam materials and its preparation, can solve the problems of cellulose not exceeding 30%, high foam density, insoluble in general solvents, etc., and achieve uniform cell diameter , good elasticity, good cross-linking effect

Active Publication Date: 2016-06-29
王美岭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since cellulose fiber is a porous non-thermoplastic material, and it is difficult to dissolve in common solvents, it is difficult to form a spatial network structure alone, and other media are needed.
Although there are patent reports on plant fiber foaming materials, the amount of cellulose added does not exceed 30%, and the foamed plastics obtained have high density, low tensile strength and poor resilience.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of composite crosslinking agent: 10 kilograms of di-tert-butyl peroxide cumene and 3 kilograms of triallyl isocyanurate are mixed uniformly to obtain 13 kilograms of composite crosslinking agent, which is used in the following embodiment 1 -2.

[0024] Preparation of composite blowing agent: 10 kg of diisopropyl azodicarboxylate and 6 kg of azodicarbonamide were mixed uniformly to obtain 16 kg of composite blowing agent, which was used in the following examples 1-2.

[0025] (1) Super finely pulverize 70 kg of wood fibers to 2500 mesh, add 0.7 kg of methionine and mix them in a high-mixer at 80°C, vigorously stir and mix, and perform fiber surface modification treatment for 1 hour to obtain 70.7 modified plant fibers Kilogram;

[0026] (2) 70.7 kilograms of modified plant fibers, 5 kilograms of hydroxypropyl starch, 5 kilograms of polyethylene succinate, 2 kilograms of nano-calcium carbonate, 1 kilogram of composite crosslinking agent, 1 kilogram of composi...

Embodiment 2

[0030] (1) Super finely pulverize 75 kg of corn stalk fibers to 2500 mesh, add 2.25 kg of methionine and mix them in a high-mixer at 80°C, vigorously stir and mix evenly, and perform fiber surface modification treatment for 1 hour to obtain modified corn stalks Fiber 77.25 kg;

[0031] (2) 77.25 kilograms of modified corn stalk fibers, 10 kilograms of hydroxypropyl starch, 10 kilograms of polyethylene succinate, 5 kilograms of nano calcium carbonate, 3 kilograms of composite crosslinking agents, 3 kilograms of composite foaming agents, 3 kg of stearic acid and 3 kg of liquid paraffin were added to a high mixer at 80°C, vigorously stirred and mixed to obtain a homogeneous body material;

[0032] (3) Extrude and granulate the stirred homogeneous material with a twin-screw extruder within a temperature range of 120-150° C. to obtain fully degraded plant fiber foamed pellets;

[0033] (4) The fully degraded plant fiber foam pellets are weighed and put into the mold. Set the tempe...

Embodiment 3

[0035] Preparation of composite crosslinking agent: 10 kilograms of di-tert-butyl peroxide cumene and 2.5 kilograms of triallyl isocyanurate are mixed uniformly to obtain 12.5 kilograms of composite crosslinking agent, which is used in the following embodiment 3 -4.

[0036] Preparation of composite blowing agent: 9 kg of diisopropyl azodicarboxylate and 6 kg of azodicarbonamide were mixed uniformly to obtain 15 kg of composite blowing agent, which was used in the following examples 3-4.

[0037] (1) Super finely pulverize 78 kg of wheat straw fiber to 2000 mesh, add 1.56 kg of methionine and mix, stir and mix vigorously in a high mixer at 80°C, and perform fiber surface modification treatment for 1 hour to obtain modified wheat straw Fiber 79.56 kg;

[0038] (2) 79.56 kilograms of modified straw fibers, 8 kilograms of hydroxypropyl starch, 7 kilograms of polyethylene succinate, 3 kilograms of nano-calcium carbonate, 2 kilograms of composite crosslinking agents, and 2 kilogra...

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Abstract

The invention discloses a full-degradable cellulose foam material and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing modified plant fibers, hydroxypropyl starch, polyethylene glycol succinate, nano calcium carbonate, a composite crosslinking agent, a composite foaming agent, stearic acid and liquid paraffin; carrying out extrusion granulation, and carrying out expansion or compression molding. The modified plant fibers are prepared by carrying out superfine pulverization on plant fibers to 2000 meshes or above and carrying out modification with methionine. The composite crosslinking agent is composed of di-tert-butyl cumene peroxide and triallyl isocyanurate. The composite foaming agent is composed of diisopropyl azodiformate and azobisformamide. The cellulose amount in the full-degradable cellulose foam material is 70% or above, and the product achieves the standard for polystyrene foam plastics and is fully biodegradable.

Description

technical field [0001] The invention relates to a fully degradable cellulose foam material and a preparation method thereof, belonging to the technical field of biochemical industry. Background technique [0002] With the increasing shortage of petroleum resources and a series of problems such as environmental pollution caused by the development of refined petrochemical products have become increasingly prominent, the development and application of "green buffer packaging materials" with good environmental compatibility have become an important issue in the 21st century. inevitable trend. Green cushioning packaging materials refer to materials that do not cause harm to the environment and human body during the entire life cycle of preparation, production, use, disposal and recycling, can be quickly and naturally degraded or reused after disposal, and will not damage the ecological balance. or products. [0003] my country's crop straw resources are very rich, with an annua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L3/08C08L67/02C08L91/06C08K13/02C08K5/14C08K5/3492C08K3/26C08K5/09C08J9/10C08H7/00
CPCC08H8/00C08J9/102C08J9/103C08J2203/04C08J2397/02C08J2403/08C08J2467/02C08K2201/011C08L97/02C08L2201/02C08L2201/06C08L2201/08C08L2203/14C08L2205/035C08L3/08C08L67/02C08L91/06C08K13/02C08K5/14C08K5/34924C08K2003/265C08K5/09
Inventor 王美岭
Owner 王美岭
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