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All-biomass composite modified foamed material and preparation method thereof

A technology of composite modified and foamed materials, which is applied in the field of ecological environment materials and new materials

Inactive Publication Date: 2013-06-12
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the pores in the foam matrix, these foams have low mechanical strength and poor dimensional stability, and the tendency of the mechanical properties of the foamed materials to decline is more obvious with the increase of the foaming rate.

Method used

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  • All-biomass composite modified foamed material and preparation method thereof
  • All-biomass composite modified foamed material and preparation method thereof
  • All-biomass composite modified foamed material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of above-mentioned a kind of whole biomass composite modified foam material, it comprises the steps:

[0034] ①According to mass percentage, 3% of cellulose nanocrystals, 92% of polybutylene succinate, 3% of foaming agent AC (ie, azodicarbonamide) and 2% of zinc oxide were selected and mixed to obtain blends.

[0035] ② Banbury the blend in an internal mixer (China Changzhou Suyan Technology Co., Ltd., the following examples are the same). The technical conditions for banburying are: temperature 130°C, rotation speed 72rpm (rev / min), and time of 15min, to obtain a solid mixture;

[0036]③The solid mixture is hot-compressed and composite-molded in a hot-press machine (Tianjin Keqi High-tech Co., Ltd., the following examples are the same), the temperature is 170°C, the pressure is 10MPa, and the time is 10min. After cooling and forming, vacuum at 40°C Dry for 12 hours to remove moisture, and obtain the cellulose nanocrystal modified polyester foam...

Embodiment 2

[0041] The preparation method of above-mentioned a kind of whole biomass composite modified foam material, it comprises the steps:

[0042] ①Based on mass percentage, 5% of cellulose nanocrystals, 90% of polybutylene succinate, 3% of foaming agent AC, and 2% of zinc oxide were selected and mixed to obtain a blend.

[0043] ② Banbury the blend in a banbury mixer. The technical conditions of banbury mixing are: temperature 120°C, rotation speed 48rpm, time 30min, to obtain a solid mixture;

[0044] ③Put the solid mixture in a hot press for hot-compression composite molding at a temperature of 160°C, a pressure of 20MPa, and a time of 3 minutes. After cooling and molding, it is vacuum-dried at 40°C for 12 hours to remove moisture, and the modified cellulose nanocrystals are obtained. Polyester foam material, that is, all biomass composite modified foam material.

[0045] The obtained all-biomass composite modified foam material, according to GB / T 9431-2000, when the maximum bend...

Embodiment 3

[0048] The preparation method of above-mentioned a kind of whole biomass composite modified foam material, it comprises the steps:

[0049] ①Based on mass percentage, 7% of cellulose nanocrystals, 88% of polybutylene succinate, 3% of foaming agent AC, and 2% of zinc oxide were selected and mixed to obtain a blend.

[0050] ② Banbury the blend in a banbury mixer. The technical conditions for banbury mixing are: temperature 130°C, rotation speed 96rpm, time 10min, to obtain a solid mixture;

[0051] ③Put the solid mixture in a hot press for hot-compression composite molding at a temperature of 180°C, a pressure of 5MPa, and a time of 20 minutes. After cooling and molding, it is vacuum-dried at 40°C for 12 hours to remove moisture, and the modified cellulose nanocrystals are obtained. Polyester foam material, that is, all biomass composite modified foam material.

[0052] The obtained all-biomass composite modified foam material, according to GB / T 9431-2000, when the maximum ben...

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Abstract

The invention belongs to the technical field of novel materials, and particularly relates to an all-biomass composite modified foamed material and a preparation method thereof. The all-biomass composite modified foamed material is prepared from the following raw materials in percentage by mass: 3-10% of cellulose nanocrystal, 83-93% of poly(butylene succinate), 3-5% of foaming agent AC and 1-2% of zinc oxide. The invention has the advantages of simple technique, wide material sources, lower density and favorable mechanical properties, and can be used as a cushioning material, sound-proof material or packaging material.

Description

technical field [0001] The invention relates to an all-biomass composite modified foam material and a preparation method thereof, which belongs to the technical field of new materials and also belongs to the field of ecological environment materials. Background technique [0002] In recent years, the modification of polymer materials by nano-sized cellulose nanocrystals has attracted widespread attention at home and abroad. Cellulose nanocrystals are rod-shaped crystalline nanoparticles with a high aspect ratio and widely exist in plant cell walls. This kind of biomass nanofiller has unique advantages in biodegradability and biocompatibility, and because of its Its own rigidity can enhance the strength and modulus of the material, so it is widely used to strengthen polymer materials. [0003] Foam is a low-density material containing a large number of pores, which can be obtained by physical and chemical foaming methods, and is widely used in sound insulation, adsorption, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L1/02C08K3/22C08J9/10C08B15/08
Inventor 黄进陈佑立杨光正车圆圆林立
Owner WUHAN UNIV OF TECH
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