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Ionic liquid and method for homogeneous phase-modified reed-reinforced PE (polyethylene) composite material thereof

A technology of ionic liquid and composite materials, which is applied in the field of homogeneously modified reed/PE composite materials, can solve the problems of poor processability and low mechanical strength, achieve the effects of reducing surface polarity, excellent processing performance, and improving solvency

Inactive Publication Date: 2015-12-23
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of low mechanical strength and poor processability of reed and PE composite materials in the prior art, the purpose of the present invention is to provide a kind of ionic liquid for modifying reed, which can be used for homogeneously modifying reed, Overcome the problem of poor solubility of reeds and improve the comprehensive performance of reeds and PE composites

Method used

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  • Ionic liquid and method for homogeneous phase-modified reed-reinforced PE (polyethylene) composite material thereof
  • Ionic liquid and method for homogeneous phase-modified reed-reinforced PE (polyethylene) composite material thereof
  • Ionic liquid and method for homogeneous phase-modified reed-reinforced PE (polyethylene) composite material thereof

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Effect test

Embodiment 1

[0026] Ionic liquid synthesis method: Add N-vinylimidazole (0.60mol) into a 250ml four-neck flask, 90°C constant temperature oil bath, magnetic stirring, slowly drop 2-chloroethanol (0.60mol) into the flask under nitrogen protection During the reaction, the solution gradually changed from colorless to golden yellow. After continuous stirring for 10 h, the mixture was washed with ether for 3 times, and the synthesized golden yellow liquid was vacuum-dried in a vacuum oven at 80° C. for 12 h to obtain an ionic liquid.

[0027] Homogeneously modified reed method: Add 10g of ionic liquid into a three-necked flask, place in a constant temperature oil bath at 100°C, and stir with magnetic force. Add the powdery reed into the three-necked flask several times, dissolve gradually under constant stirring, and prepare a solution with a mass fraction of 5%. Add 78.5g acetyl chloride, in N 2 Heating to 80°C under protection, stirring magnetically for a predetermined time, precipitated a ...

Embodiment 2

[0030] Ionic liquid synthesis method: Add N-vinylimidazole (0.60mol) into a 250ml four-neck flask, 90°C constant temperature oil bath, magnetic stirring, slowly drop 2-chloroethanol (0.550mol) into the flask under nitrogen protection During the reaction, the solution gradually changed from colorless to golden yellow. After continuous stirring for 10 h, it was washed with ether for 3 times, and the synthesized golden yellow liquid was vacuum-dried in a vacuum oven at 80° C. for 12 h.

[0031] Homogeneously modified reed method: Add 10g of ionic liquid into a three-necked flask, place in a constant temperature oil bath at 100°C, and stir with magnetic force. Add the powdery reed into the three-necked flask several times, dissolve gradually under constant stirring, and prepare a solution with a mass fraction of 5%. Add 78.5g acetyl chloride, in N 2 Heating to 80°C under protection, stirring magnetically for a predetermined time, precipitated a white product with methanol, filte...

Embodiment 3

[0034] Ionic liquid synthesis method: Add N-vinylimidazole (0.60mol) into a 250ml four-necked flask, 90°C constant temperature oil bath, magnetic stirring, slowly drop 2-chloroethanol (0.50mol) into the flask under nitrogen protection During the reaction, the solution gradually changed from colorless to golden yellow. After continuous stirring for 10 h, it was washed with ether for 3 times, and the synthesized golden yellow liquid was vacuum-dried in a vacuum oven at 80° C. for 12 h.

[0035] Homogeneously modified reed method: Add 10g of ionic liquid into a three-necked flask, place in a constant temperature oil bath at 100°C, and stir with magnetic force. Add the powdery reed into the three-necked flask several times, dissolve gradually under constant stirring, and prepare a solution with a mass fraction of 5%. Add 78.5g acetyl chloride, in N 2 Heating to 80°C under protection, stirring magnetically for a predetermined time, precipitated a white product with methanol, filt...

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Abstract

The invention provides ionic liquid and a method for a homogeneous phase-modified reed-reinforced PE (polyethylene) composite material thereof, which belong to the field of synthesis and modification of materials. The ionic liquid is 1-vinyl-3-hydroxyethyl imidazole chlorine which is synthesized by N-vinyl imidazole and 2-chlorohydrin as raw materials according to the molar ratio of (1 to 1.5):1; the method adopts the ionic liquid, namely (1-vinyl-3-hydroxyethyl imidazole chlorine) to perform homogeneous phase modification on reeds, and the homogeneous phase-modified reed and PE are compounded, so that the homogeneous phase-modified reed-reinforced PE composite material is prepared. The ionic liquid designed by the invention can be used for effectively decreasing the surface polarity of the reeds, and increasing the dissolving capability of reed fibers. Compared with conventional methods, the method for performing homogeneous phase modification on the reeds by adopting the ionic liquid has the advantages of environment-friendly reaction solvents and recyclability; moreover, the homogeneous phase modification method improves the compatibility between the reeds and the PE, and the prepared homogeneous phase-modified reed-reinforced PE composite material has good mechanical property and excellent processability.

Description

technical field [0001] The invention belongs to the field of material synthesis and modification, and specifically relates to synthesizing a recyclable ionic liquid, and using the ionic liquid as a solvent to homogeneously modify reeds, and to apply homogeneously modified reeds to PE to prepare homogeneously modified Reed / PE composite material. Background technique [0002] Plant fiber is the most abundant natural polymer in nature, and the preparation of plant fiber / thermoplastic resin composites by blending technology is a new way to effectively develop and utilize this kind of renewable resources. Reed is a kind of natural plant fiber, which has the advantages of high yield, low requirement for growth environment and short growth cycle. Cellulose is the main component of reed. Due to the presence of a large number of hydroxyl groups in its structure, the reed fiber has strong polarity, which makes the interface wettability and interface adhesion between it and non-polar ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/60C08L23/06C08L97/02
CPCC07D233/60C08L23/06C08L2205/16C08L97/02
Inventor 夏英张锋锋任庆龙张伟明张卉郭静张鸿
Owner DALIAN POLYTECHNIC UNIVERSITY
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