Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of cellulose nanocrystal/carbon black/natural rubber composite

A nano-microcrystalline and natural rubber technology, applied in the field of rubber, can solve the problems of high pollution, high energy consumption, dependence on petroleum resources, etc., and achieve the effect of increasing cross-linking density, low cost, and superior mechanical properties

Inactive Publication Date: 2011-02-16
SOUTH CHINA UNIV OF TECH
View PDF1 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the most traditional and important reinforcing filler in the rubber industry, carbon black has excellent reinforcing properties, but at the same time it also has unavoidable shortcomings such as high pollution, high energy consumption, and dependence on petroleum resources.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of cellulose nanocrystal/carbon black/natural rubber composite
  • Preparation method of cellulose nanocrystal/carbon black/natural rubber composite
  • Preparation method of cellulose nanocrystal/carbon black/natural rubber composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In the first step, 169.5g mass fraction of 59% natural rubber latex (equivalent to 100g dry rubber) is placed in a 1L beaker, and stirred at room temperature for 15min;

[0062] In the second step, at 60°C, 5 g of nanocrystalline cellulose was added to 100 g of ethanol solution with a mass fraction of 95%, and the pH was adjusted to 5 with acetic acid, 0.5 g of coupling agent A151 was added, and the reaction was stirred for 90 min;

[0063] The third step is to add nano-microcrystalline cellulose to the evenly stirred natural rubber latex, and stir and mix at room temperature for 45 minutes;

[0064] The fourth step is to pour the well-stirred natural rubber / nano-microcrystalline cellulose mixture into the tray, and spray 10% CaCl in mass fraction 2 The solution was demulsified, co-precipitated, washed for 20 hours, and dried in a blast drying oven at 60°C to constant weight to obtain a solid natural rubber / nanocrystalline cellulose mixture;

[0065] The 5th step carri...

Embodiment 2

[0069] In the first step, 169.5g mass fraction of 59% natural rubber latex (equivalent to 100g dry rubber) is placed in a 1L beaker, and stirred at room temperature for 15min;

[0070] In the second step, at 60°C, 0g, 5g, 10g, 15g, 20g, and 25g of nanocrystalline cellulose were added to 0g, 50g, 100g, 150g, 200g, and 250g of ethanol solutions with a mass fraction of 95% as For 6 samples, adjust the pH to 7, add 0g, 0.5g, 1.0g, 1.5g, 2.0g, 2.5g of coupling agent Si-69 to the 6 samples respectively, and stir for 90min;

[0071] The third step is to add nano-microcrystalline cellulose to the evenly stirred natural rubber latex, and stir and mix at room temperature for 45 minutes;

[0072] The fourth step is to pour the well-stirred natural rubber / nano-microcrystalline cellulose mixture into the tray, and spray it with 10% CaCl 2 The solution is demulsified, co-precipitated and washed for 20 hours, and dried in a blast drying oven at 60°C to constant weight to obtain a solid natu...

Embodiment 3

[0075] In the first step, 169.5g mass fraction of 59% natural rubber latex (equivalent to 100g dry rubber) is placed in a 1L beaker, and stirred at room temperature for 20min;

[0076] In the second step, at 60°C, 0g, 5g, 10g, 15g, 20g, and 25g of nanocrystalline cellulose were added to 0g, 50g, 100g, 150g, 200g, and 250g of 95% ethanol solution (NCC's mass fraction) respectively. The mass is 10% of the mass of the ethanol solution), adjust the pH to 5 with acetic acid, then add 0 g, 0.5 g, 1.0 g, 1.5 g, 2.0 g, 2.5 g of coupling agent NDZ102 respectively, and stir for 120 min;

[0077] The third step is to add nano-microcrystalline cellulose to the evenly stirred natural rubber latex, and stir and mix at room temperature for 60 minutes;

[0078]The fourth step is to pour the well-stirred natural rubber / nano-microcrystalline cellulose mixture into the tray, and spray it with 10% CaCl 2 The solution was demulsified, co-precipitated, and washed for 24 hours, and dried in a blast...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Tear strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a nanocrystals cellulose / carbon black / rubber composite. The nanocrystals cellulose (NCC) is prepared through the acidolysis of microcrystalline cellulose, is a rod-like crystal product with the diameter of 20-60nm and the average length of 300nm, is characterized by reproducibility, low density, orientation, high strength and the like and can be used as the novel reinforced material of rubber; the NCC has simple preparation method and low price and is accessible. Researches prove that the reinforcing effect of the NCC to rubber is better than carbon black, the thermal-oxydative aging property of rubber can be well improved, the heat build-up of the composite can be reduced, and the traditional rubber process technology can also be adopted to prepare the NCC / carbon black / rubber composite. The NCC / carbon black / rubber composite prepared by the method can be used to prepare various vulcanized rubber products.

Description

technical field [0001] The invention belongs to the field of rubber, in particular to a preparation method of nano-microcrystalline cellulose / carbon black / natural rubber composite material. Background technique [0002] As the most traditional and important reinforcing filler in the rubber industry, carbon black has excellent reinforcing properties, but at the same time it also has unavoidable shortcomings such as high pollution, high energy consumption, and dependence on petroleum resources. Cellulose is a kind of polysaccharide biological material widely existing in nature, and the cellulose synthesized in nature every year in the world can reach 10 10 ~10 11 Ton. Microcrystalline cellulose produced by cellulose degradation has a relatively complete crystalline structure and excellent mechanical properties. Compared with traditional fillers such as carbon black, microcrystalline cellulose has the advantages of extensive sources, low cost, renewable, degradable, environm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08K3/04C08L1/02C08L7/00C08K13/02
Inventor 古菊林路徐苏华罗远芳贾德民
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com