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Lignin/nitrile butadiene rubber composite and preparation method thereof

A technology of nitrile-butadiene rubber and composite materials, applied in the field of rubber materials, can solve the problems of reduced elongation at break and reduced toughness of composite materials, and achieve the effects of low cost, low cost, excellent anti-ultraviolet radiation and anti-aging functions

Active Publication Date: 2017-11-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, too many chemical bonds will prevent the lignin nanoparticles from slipping in the rubber matrix to dissipate energy, resulting in a decrease in elongation at break and a decrease in toughness of the composite.

Method used

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  • Lignin/nitrile butadiene rubber composite and preparation method thereof
  • Lignin/nitrile butadiene rubber composite and preparation method thereof
  • Lignin/nitrile butadiene rubber composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In parts by mass, preheat the internal mixer to 80°C, add 100 parts of dry NBR, 40 parts of dry alkali lignin powder, 5 parts of EHTPB, and 5 parts of ATA to the internal mixer in sequence, and mix for 15 minutes; Add 3 parts of ZnCl 2 , continue mixing for 15 minutes; cool the material to below 80°C, add vulcanization aids (5 parts of ZnO, 2 parts of stearic acid, 2.5 parts of elemental S, 1.5 parts of CBS, 1 part of DM), and continue mixing for 10 minutes Discharge. The material from the internal mixer continues to be milled on the double-roller open mill for 15 minutes to produce flakes, matured for 24 hours, and finally put into a flat vulcanizer, vulcanized at 160°C and 15MPa for 30 minutes to obtain lignin / Nitrile rubber compound. The acrylonitrile content in the selected nitrile rubber is 41%.

Embodiment 2

[0045] In terms of parts by mass, at 30°C, add 100 parts of dry NBR, 40 parts of dry enzymatic lignin powder, 5 parts of EHTPB, and 5 parts of ATA to the internal mixer, and mix for 15 minutes; add 3 parts ZnCl 2 After continuing to mix for 10 minutes; add vulcanization additives (5 parts of ZnO, 2 parts of stearic acid, 2.5 parts of elemental S, 1.5 parts of CBS, 1 part of DM) to the internal mixer, and continue mixing for 5 minutes to produce material. The material from the internal mixer continues to be milled on the double-roller open mill for 15 minutes to produce flakes, matured for 24 hours, and finally put into a flat vulcanizer, vulcanized at 160°C and 15MPa for 30 minutes to obtain lignin / Nitrile rubber compound. The acrylonitrile content in the selected nitrile rubber is 41%.

Embodiment 3

[0047] In parts by mass, preheat the internal mixer to 80°C, add 100 parts of dry NBR, 40 parts of dry alkali lignin powder, 5 parts of EHTPB, and 5 parts of dopamine to the internal mixer in sequence, and mix for 15 minutes; Add 3 parts of ZnCl 2 , continue mixing for 15 minutes; cool the material to below 80°C, add vulcanization aids (5 parts of ZnO, 2 parts of stearic acid, 2.5 parts of elemental S, 1.5 parts of CBS, 1 part of DM), and continue mixing for 10 minutes Discharge. The material from the internal mixer continues to be milled on the double-roller open mill for 15 minutes to produce flakes, matured for 24 hours, and finally put into a flat vulcanizer, vulcanized at 160°C and 15MPa for 30 minutes to obtain lignin / Nitrile rubber compound. The acrylonitrile content in the selected nitrile rubber is 41%.

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Abstract

The invention belongs to the technical field of rubber materials and discloses a lignin / nitrile butadiene rubber composite and a preparation method thereof. The composite is prepared from components in parts by mass as follows: 100 parts of nitrile butadiene rubber, 10-100 parts of lignin, 1-15 parts of a reactive compatilizer, 0-15 parts of a modifier A, 0-10 parts of a modifier B and 5-15 parts of a vulcanizing agent through reactions. The composite with different mechanical performance is obtained by adjusting the use amounts of the lignin, the reactive compatilizer, the modifier A and the modifier B and has the tensile strength of 10-30 MPa and the elongation at break of 250%-800%. The non-covalent bonded energy sacrifice bond function is constructed between lignin and nitrile butadiene rubber phase interfaces under the effects of the reactive compatilizer and modifiers, the excellent comprehensive mechanical performance is obtained, the lignin can enhance and toughen rubber, and the problem of poor physical performance of composites due to poor compatibility is solved.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, in particular to a lignin / nitrile rubber composite material and a preparation method thereof. Background technique [0002] Lignin is the second largest biomass resource after cellulose in plants, and is known as one of the most abundant green resources that can be utilized by humans in the 21st century. Rubber is an important material indispensable to the development of national economy and high technology, and has a wide range of uses. During the manufacturing process of rubber products, a large amount of reinforcing / filling agents (such as carbon black, etc.) need to be added to improve their physical and mechanical properties. At the same time, the resistance to thermal oxygen aging and ultraviolet aging of the rubber itself is insufficient. At present, the most commonly used method is to add small molecule antioxidants and light stabilizers, such as hindered phenols, hindered amine...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L97/00C08L63/08C08K13/02C08K3/16
CPCC08K2003/168C08L9/02C08L97/005C08L2201/08C08L2205/03C08L2205/08C08L97/00C08L63/08C08K13/02C08K3/16
Inventor 邱学青刘伟峰王海旭黄锦浩楼宏铭杨东杰
Owner SOUTH CHINA UNIV OF TECH
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