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Modified nanocellulose/polypyrrole composite material and preparation method thereof, and antistatic rubber composition and preparation method thereof

A technology of nanocellulose and rubber composition, which is applied in the field of tire rubber formulation, can solve the problems affecting the compatibility and dispersion of non-polar rubber, poor compatibility, poor hydrophobicity, etc., to increase the binding effect and improve the electrical conductivity , Improve the effect of antistatic performance

Pending Publication Date: 2021-11-19
SAILUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of formulation design, compounding nanocellulose with polypyrrole and using it in rubber formulations as an antistatic agent can effectively improve the antistatic performance of tires; however, there are a large number of hydroxyl groups on the surface and inside of nanocellulose, and its hydrophobicity is poor. , affecting its compatibility and dispersion in non-polar rubber, and the special π-bond macromolecular chain structure in polypyrrole leads to its poor compatibility in elastomers, resulting in the composite material of nanocellulose and polypyrrole It is difficult to be compatible with the rubber system, so how to solve the dispersion of the composite material of nanocellulose and polypyrrole in the rubber system, so that it can be uniformly dispersed in the rubber system, so as to improve the antistatic performance of the rubber material is a difficult point

Method used

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  • Modified nanocellulose/polypyrrole composite material and preparation method thereof, and antistatic rubber composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method of modified nanocellulose / polypyrrole composite material A, specifically comprising the following steps:

[0045] S1. Preparation of modified nanocellulose: 100 parts by weight of nanocellulose is formulated into a 2 g / L aqueous solution of nanocellulose, and the aqueous solution of nanocellulose, 0.5 parts by weight of initiator and 20 parts by weight of styrene are placed in a flask , stirred at 70°C for 17 minutes, added dropwise 40 parts by weight of acrylic acid, and reacted at the reaction temperature for 120 minutes to obtain a modified nanocellulose suspension;

[0046] S2. Add 60 parts by weight of pyrrole and 22 parts by weight of toluene-4-sulfonic acid into the modified nanocellulose suspension, stir magnetically for 1.5 hours in an ice-water bath, and add 19 parts by weight of 0.1mol / L FeCl dropwise 3 , reacted for 9 hours under ice-water bath conditions, and obtained modified nanocellulose / polypyrrole composite material A after suction...

Embodiment 2

[0048] A preparation method of modified nanocellulose / polypyrrole composite material B, specifically comprising the following steps:

[0049] S1. Preparation of modified nanocellulose: 90 parts by weight of nanocellulose are formulated into a 2 g / L aqueous solution of nanocellulose, and the aqueous solution of nanocellulose, 0.4 parts by weight of initiator and 15 parts by weight of styrene are placed in a flask , stirred at 60°C for 15 minutes, added dropwise 30 parts by weight of acrylic acid, and reacted at the reaction temperature for 60 minutes to obtain a modified nanocellulose suspension;

[0050] S2. Add 50 parts by weight of pyrrole and 15 parts by weight of toluene-4-sulfonic acid into the modified nanocellulose suspension, stir magnetically for 1 h under ice-water bath conditions, and add 17 parts by weight of 0.1mol / L FeCl dropwise 3 , reacted for 8 hours under ice-water bath conditions, and obtained modified nanocellulose / polypyrrole composite material B after suc...

Embodiment 3

[0052] A preparation method of modified nanocellulose / polypyrrole composite material C, specifically comprising the following steps:

[0053] S1. Preparation of modified nanocellulose: 110 parts by weight of nanocellulose are formulated into a 2g / L aqueous solution of nanocellulose, and the aqueous solution of nanocellulose, 0.6 parts by weight of initiator and 25 parts by weight of styrene are placed in a flask , stirred at 85°C for 20 minutes, added dropwise 50 parts by weight of acrylic acid, and reacted at the reaction temperature for 180 minutes to obtain a modified nanocellulose suspension;

[0054] S2. Add 70 parts by weight of pyrrole and 25 parts by weight of toluene-4-sulfonic acid into the modified nanocellulose suspension, stir magnetically for 2 hours in an ice-water bath, and add 22 parts by weight of 0.1mol / L FeCl dropwise 3 , reacted for 10 hours under ice-water bath conditions, and obtained modified nanocellulose / polypyrrole composite material C after suction ...

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Abstract

The invention discloses a modified nanocellulose / polypyrrole composite material and a preparation method thereof, and an antistatic rubber composition and a preparation method thereof, the modified nanocellulose / polypyrrole composite material comprises the following components by weight: 90-110 parts of nanocellulose, 15-25 parts of styrene, 30-50 parts of acrylic acid, 50-70 parts of pyrrole, and 0.4-0.6 part of an initiator; and the method is characterized by adding the modified nano cellulose / polypyrrole composite material into the rubber composition to prepare the antistatic rubber composition; the styrene and the acrylic acid is used for modifying the nano cellulose, so that the nano cellulose is uniformly dispersed in a rubber matrix; a hydrogen bond is formed between the polypyrrole and the nanocellulose, and a multi-layer cross-linked network structure is formed on a rubber matrix along with the nanocellulose, so that a conductive path is formed, and the conductivity of the rubber composition is improved; a tire produced from the rubber composition can well export static electricity generated in the running process of the tire, so that the antistatic performance of the rubber tire is improved.

Description

technical field [0001] The invention relates to the technical field of tire rubber formulations, in particular to a modified nanocellulose / polypyrrole composite material and a preparation method, an antistatic rubber composition and a preparation method. Background technique [0002] With the development of the tire industry and the improvement of consumer demand, the development trend of tires pays more attention to quality and performance, including safety, fuel economy and wear resistance. In the 1990s, the concept of "green tires" was proposed. By using a high proportion of silica in the tread formula to optimize the tread compound formula, the effects of low rolling resistance, improved wet skid resistance, and improved wear resistance were achieved. However, tires are prone to static electricity accumulation during driving. Both rubber and silica are non-conductive materials, which cannot lead out charges, resulting in poor antistatic performance of tires. [0003] Na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/02C08L79/04C08F251/02C08F212/08C08F220/06C08G73/06C08L9/06C08L9/00B29B7/74
CPCC08L51/02C08F251/02C08G73/0611B29B7/7466C08L9/06C08L9/00C08L2201/04C08L79/04C08F212/08C08F220/06Y02T10/86
Inventor 汤晶云霄王伟任衍峰周天明
Owner SAILUN GRP CO LTD
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