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A method of improving the dispersion of hard carbon black in nr by peg

A technology of hard carbon black and dispersion, which is applied in the field of improving the dispersion of carbon black in NR, and can solve the problems of difficult dispersion and high surface activity.

Active Publication Date: 2018-04-27
烁元新材料(东营)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high reinforcement of carbon black also comes from the active groups on its surface. These groups have high surface activity and tend to aggregate with each other, making it difficult to disperse

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Example 1: Put 100g of natural rubber (NR SCR5) into the double-roller mill vertically, then add 1g of PEG2000, 5g of activator zinc oxide, 1g of stearic acid, and N-isopropyl- N'-phenyl-p-phenylenediamine (4010NA) 1g and 2,2,4trimethyl-1,2-dihydroquinoline (RD) 1g, paraffin 1.5g, reinforcing carbon black N33050g, vulcanization accelerator ( NOBS) 1.6g, and finally add 2.5g of sulfur, mix uniformly on the open mill to get the mixed rubber, then vulcanize it on a plate at 145°C to get the vulcanized rubber, measure its mechanical properties after punching, see Table 1.

example 2

[0017] Example 2: Put 100g of natural rubber (NR SCR5) into the double-roller mill vertically, then add 1g of PEG4000, 5g of zinc oxide as an activator, 1g of stearic acid, and N-isopropyl- N'-phenyl-p-phenylenediamine (4010NA) 1g and 2,2,4trimethyl-1,2-dihydroquinoline (RD) 1g, paraffin 1.5g, reinforcing carbon black N33050g, vulcanization accelerator ( NOBS) 1.6g, and finally add 2.5g of sulfur, mix uniformly on the open mill to get the mixed rubber, then vulcanize it on a plate at 145°C to get the vulcanized rubber, measure its mechanical properties after punching, see Table 1.

example 3

[0018] Example 3: Put 100g of natural rubber (NR SCR5) into the double-roller mill vertically, then add 1g of PEG6000, 5g of activator zinc oxide, 1g of stearic acid, and N-isopropyl- N'-phenyl-p-phenylenediamine (4010NA) 1g and 2,2,4trimethyl-1,2-dihydroquinoline (RD) 1g, paraffin 1.5g, reinforcing carbon black N33050g, vulcanization accelerator ( NOBS) 1.6g, and finally add 2.5g of sulfur, mix uniformly on the open mill to get the mixed rubber, then vulcanize it on a plate at 145°C to get the vulcanized rubber, measure its mechanical properties after punching, see Table 1.

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PUM

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Abstract

The invention relates to a method for improving dispersion of hard carbon black in NR with PEG. The method is characterized in that adopted matrix rubber is natural rubber (SCR5), an adopted vulcanization system is a sulfur vulcanization system, an adopted vulcanization accelerator is a sulfenamide accelerator (NOBS), an adopted antiager is an amine antiager (RD and 4010NA), an adopted reinforcing agent is N330, an adopted physical protective agent is paraffin, and an adopted carbon black dispersing agent is polyethylene glycol (PEG). According to the method, sulfur is used as a vulcanizing agent, all the properties of the obtained rubber material can reach national standards, and after an appropriate amount of carbon black dispersing agent is added, the mechanical property is improved.

Description

technical field [0001] The invention relates to a method for improving the dispersion of carbon black in NR, in particular to a method for improving the dispersion of hard carbon black in NR by using PEG. Background technique [0002] NR is widely used, and a large amount of carbon black is often added to the rubber compound to improve its physical and mechanical properties. However, carbon black, as an important filling and reinforcing additive in rubber products, has very fine particles and high surface activity, and it is prone to self-agglomeration tendencies to varying degrees during the rubber mixing process. The smaller the carbon black particle size, the better the reinforcing effect, the more serious the agglomeration tendency and the poorer dispersion effect. This has almost become a regular phenomenon in carbon black. The reason is that carbon black particles It is finer, the surface energy is larger, and it is easy to self-polymerize, which is one reason why car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L91/06C08L71/02C08K13/02C08K3/22C08K5/09C08K5/3437C08K3/04C08K3/06
CPCC08L7/00C08L2205/03C08L91/06C08L71/02C08K13/02C08K2003/2296C08K5/09C08K5/3437C08K3/04C08K3/06
Inventor 王重刘浩张舒雅武文斌孟唯
Owner 烁元新材料(东营)股份有限公司