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Biodegradable in-situ nano composite material as well as preparation method and application thereof

A nanocomposite material and biodegradable technology, which is applied in the field of biodegradable in-situ nanocomposite materials and their preparation, can solve problems affecting the mechanical properties of composite materials, achieve both biodegradability and mechanical properties, improve mechanical properties, and improve The effect of mechanical properties

Pending Publication Date: 2020-10-20
ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent literature with application number CN201410519180.4 reports a preparation method of sisal cellulose nano whiskers / polylactic acid biocomposite material, which is to disperse sisal cellulose nano whiskers in the In polylactic acid, there is a problem of uniform dispersion of nano whiskers in polylactic acid, which affects the mechanical properties of composite materials
The Chinese patent literature with the application number CN201610177805.2 reports a preparation method of sisal cellulose nano-whiskers reinforced polylactic acid / polyethylene succinate biocomposite material, the method is to sisal cellulose nano-crystal The whisker / polylactic acid compound is dissolved in ethanol, blended with polyethylene succinate by solution blending, and the ethanol solution of the blend is spun. This method is not suitable for melt blending processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] A biodegradable material is prepared by the following steps:

[0065] (1) Prepare the first resin:

[0066] (1.1) Add 1.00 mol of terephthalic acid, 2.5 mol of adipic acid, 3.0 mol of 1,4-butanediol, 0.05 mol of glycerol and 0.08 mol of pentaerythritol, and the mass fractions are aliphatic diols, Aliphatic polyhydric alcohol and 0.6% of the total mass of dibasic acid are mixed with nanocellulose with an aspect ratio of 50 to obtain a slurry. The slurry is transported to the raw material storage tank at 70 ºC, and the slurry in the raw material storage tank passes through the raw material The conveying pipeline is continuously transported to the esterification reactor, and at the same time, a 75 ºC solution containing 0.004 mol tetrabutyl titanate is transported from the catalyst pipeline; the internal reaction temperature of the esterification reactor is 158 ºC, and the atmospheric pressure nitrogen atmosphere collects the ester through the pipeline. Put the water and ...

Embodiment 2

[0075] (1) Prepare the first resin:

[0076] (1.1) Add 1.00 mol of terephthalic acid, 1.5 mol of succinic acid, 3.0 mol of ethylene glycol, 0.05 mol of pentaerythritol and 0.2 mol of trimethylolethane, the mass fraction is aliphatic diol, Aliphatic polyols and 9.5% of the total mass of dibasic acids are mixed with cellulose nanofibers with a particle size of 100 to obtain a slurry. The slurry is transported to the raw material storage tank at 70 ºC, and the slurry in the raw material storage tank passes through the raw material The pipeline is continuously transported to the esterification reactor, and at the same time, 75 ºC containing 0.024 mol ethylene glycol antimony is transported from the catalyst pipeline; the internal reaction temperature of the esterification reactor is 180 ºC, and the atmospheric pressure nitrogen atmosphere collects the esterification water through the pipeline And the by-products and the remaining polymerized monomer mixture and the rectification t...

Embodiment 3

[0085] (1) Prepare the first resin:

[0086] (1.1) Mix 1.00 mol of terephthalic acid, 1.5 mol of succinic acid, 3.0 mol of butanediol, 0.05 mol of xylitol and 0.2 mol of sorbitol in mass fractions of aliphatic dihydric alcohol, aliphatic polyhydric alcohol 2% of the total mass of alcohol and dibasic acid is mixed with cellulose nanocrystals with an aspect ratio of 20 and cellulose nanofibers with an aspect ratio of 80 according to a mass ratio of 1:1 to obtain a slurry, and the slurry is heated at 70 ºC The slurry in the raw material storage tank is continuously transported to the esterification reactor through the raw material delivery pipeline. At the same time, 75 ºC containing 0.012 mol ethylene glycol antimony is transported from the catalyst pipeline; the inside of the esterification reactor The reaction temperature is 200 ºC, atmospheric nitrogen atmosphere, the esterification water and by-products and the remaining polymerized monomer mixture are collected through the ...

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PUM

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Abstract

The invention relates to the field of biodegradable materials, and discloses a biodegradable in-situ nano composite material as well as a preparation method and application thereof. The nano compositematerial comprises first resin and second resin, wherein the first resin is prepared from the following components in percentage by mass: 0.1 to 15 percent of a nano filler and 85 to 99.9 percent ofresin with a number-average molecular weight of 500 to 10,000 kDa; and the second resin includes a resin having a number average molecular weight of 10,000 to 100,000 kDa. The nano filler is dispersedin the first resin with a low molecular weight, the first resin is prepared by adopting an in-situ synthesis method, and then the first resin is mixed with the second resin with higher molecular weight, so that the agglomeration of the nano filler can be effectively prevented, the mechanical property of the nano composite material is improved, and meanwhile, the effects of strengthening and toughening are achieved.

Description

technical field [0001] The invention relates to the field of biodegradable materials, in particular to a biodegradable in-situ nanocomposite material and its preparation method and application. Background technique [0002] With the increasing "white pollution", the preparation and application of biodegradable materials have received more and more attention. Biodegradable polymers refer to polymer materials that can be degraded by microorganisms (such as fungi, bacteria, algae, etc.) or their secretions under enzymatic or chemical decomposition under certain time and appropriate natural conditions. Currently commercialized biodegradable polymers mainly include aliphatic polyesters, polyvinyl alcohol and polysaccharides. [0003] Currently widely used biodegradable polymers mainly include polybutylene adipate / terephthalate (PBAT), poly(butylene succinate-co-butylene adipate) (PBSA), polybutylene adipate Lactic acid (PLA), polycaprolactone (PCL), polyhydroxy fatty acids (PHA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L69/00C08L1/02C08L97/00C08K3/34C08J5/18C08G63/20C08G63/78C08G63/86C08G63/85C08G63/08C08G63/84C08G63/83C08G63/87
CPCC08J5/18C08G63/20C08G63/78C08G63/866C08G63/85C08G63/08C08G63/823C08G63/84C08G63/83C08G63/87C08J2367/02C08J2467/04C08J2367/04C08J2469/00C08J2467/02C08K3/34C08K2201/011
Inventor 王文俊王松林刘平伟来蕾吴海强徐锦龙
Owner ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD
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