Processing

Please wait...

Settings

Settings

Goto Application

1. WO2017028413 - GRAFT MODIFICATION METHOD OF RICE STRAW FIBERS

Publication Number WO/2017/028413
Publication Date 23.02.2017
International Application No. PCT/CN2015/097221
International Filing Date 13.12.2015
IPC
C08H 8/00 2010.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
HDERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
8Macromolecular compounds derived from lignocellulosic materials
C08G 18/48 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
48Polyethers
CPC
C08G 18/4825
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
48Polyethers
4825Polyethers containing two hydroxy groups
C08G 18/4833
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
48Polyethers
4833Polyethers containing oxyethylene units
C08G 18/6484
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
64Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
6484Polysaccharides and derivatives thereof
C08G 18/6492
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
28characterised by the compounds used containing active hydrogen
40High-molecular-weight compounds
64Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
6492Lignin containing materials; Wood resins; Wood tars; Derivatives thereof
C08G 18/7621
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
74cyclic
76aromatic
7614containing only one aromatic ring
7621being toluene diisocyanate including isomer mixtures
C08G 18/7657
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
74cyclic
76aromatic
7657containing two or more aromatic rings
Applicants
  • 江南大学 JIANGNAN UNIVERSITY [CN]/[CN]
Inventors
  • 黄丹 HUANG, Dan
  • 甄莉莉 ZHEN, Lili
  • 任学宏 REN, Xuehong
  • 王鸿博 WANG, Hongbo
Priority Data
201510509119.618.08.2015CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) GRAFT MODIFICATION METHOD OF RICE STRAW FIBERS
(FR) PROCÉDÉ DE MODIFICATION DE GREFFE DE FIBRES DE PAILLE DE RIZ
(ZH) 稻草纤维的一种接枝改性方法
Abstract
(EN)
The present invention relates to a thermoplastic polymer preparation process using rice straw graft polyethylene glycol (PEG). Pulverized and pretreated rice straw powder is firstly reacted with diisocyanate for 60 min under ultrasonic-microwave synergy, then a certain proportion of PEG is added, followed by a 70 min reaction, and the rice straw/PEG graft polymer is prepared. The advantages of the present invention are that in the overall process of the rice straw fiber pretreatment and grafting reaction, an efficient green ultrasonic-microwave synergy technique is used, which improves the accessibility of the rice straw fiber modification reaction and the effect of the graft modification reaction; and PEG is grafted onto the rice straw fibers through the bridging of diisocyanate, which greatly improves the thermal properties of rice straw fibers, and endows the rice straw with thermoplasticity. The modified rice straw fibers can be prepared into a self-reinforced composite material by hot-pressing in the case where a plasticizer is not added, which overcomes the problems of waste and pollution in the traditional straw refuse recycling methods, and realizes the purpose of full utilization of straw.
(FR)
La présente invention concerne un procédé de préparation d'un polymère thermoplastique utilisant du polyéthylène glycol (PEG) greffé de paille de riz. On met d'abord à réagir de la poudre de paille de riz pulvérisée et prétraitée avec un diisocyanate pendant 60 minutes sous une synergie ultrasons-micro-ondes, puis une certaine proportion de PEG est ajoutée, suivi par une réaction de 70 minutes, et le polymère greffé paille de riz/PEG est préparé. Les avantages de la présente invention résident dans le fait que dans le procédé global de prétraitement de fibres de paille de riz et de réaction de greffage, une technique synergique ultrasons-micro-ondes verte et efficace est utilisée, qui améliore l'accessibilité de la réaction de modification de la fibre de paille de riz et l'effet de la réaction de modification de greffe ; et le PEG est greffé sur les fibres de paille de riz par pontage de diisocyanate, ce qui permet d'améliorer considérablement les propriétés thermiques des fibres de paille de riz, et confère une certaine thermoplasticité à la paille de riz. Les fibres de paille de riz modifiées peuvent être préparées en un matériau composite auto-renforcé par pressage à chaud lorsqu'aucun plastifiant n'est ajouté, ce qui permet de résoudre les problèmes de déchets et de pollution dans les procédés classiques de recyclage de déchets de paille, et remplit l'objectif d'une utilisation totale de la paille.
(ZH)
本发明涉及一种利用稻草接枝聚乙二醇(PEG)制备热塑性聚合物的工艺。经粉碎、预处理后的稻草粉,在超声微波协同作用下首先与二异氰酸酯反应60min,然后加入一定比例的PEG,继续反应70min,制得稻草/PEG接枝聚合物。本发明的优点是稻草纤维的预处理和接枝反应的全过程中采用了一种绿色高效的超声-微波协同作用技术,提高了稻草纤维改性反应的可及度和接枝改性反应效果;通过二异氰酸酯的桥接在稻草纤维上接枝了PEG,很好地改善了稻草纤维的热性能,赋予了稻草纤维热塑性。该改性稻草纤维能在不添加增塑剂的情况下热压制得自增强复合材料,克服了传统秸秆废弃物再利用方法的浪费和污染问题,实现了秸秆全利用的目的。
Also published as
Latest bibliographic data on file with the International Bureau