Preparation method of high-dispersion white carbon black

A high-dispersion white carbon black, a certain amount of technology, applied in the field of rubber additives, can solve the problems such as the inability to meet the development needs of high-performance green tires, the comprehensive performance of easy-to-agglomerate rubber composite materials, and the poor dispersibility. Rubber properties, the effect of reducing agglomeration and increasing crosslinking density

Pending Publication Date: 2022-05-27
江苏爱特恩高分子材料有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, nano-silica (SiO2) used to prepare green tires 2 ) That is, silica always has problems such as poor dispersion, easy agglomeration and unsatisfactory comprehensive properties of rubber composites.
Therefore, nano silicon dioxide (SiO 2 ) as a single filler in rubber can no longer meet the needs of the development of high-performance green tires

Method used

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  • Preparation method of high-dispersion white carbon black

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of high-dispersion white carbon black for rubber reinforcement, the specific steps are as follows:

[0022] S1: The nano-SiO 2 and D-sodium gluconate (0.05%) were dispersed in deionized water, after ultrasonic dispersion for 0.5-1.5h, anhydrous Na was added to the suspension 2 CO 3 And stir and dissolve completely to obtain solution A;

[0023] S2: Weigh a certain amount of Mg(NO 3 ) 2 ·6H 2 O, Ca(NO 3 ) 2 ·6H 2 O, Al (NO 3 ) 3 ·9H 2 O was dissolved in deionized water to form solution B, in which SiO 2 and Mg x-nCanAl - The mass ratio of LDH is 5:1, the value of x is 3, and the value of n is 0.2, indicating that n (Mg 2+ +Ca 2+ ): n (Al 3+ ) is 3:1, n(Ca 2+ ): n(Al 3+ ) is 0.2:1;

[0024] S3: Slowly add solution B to solution A at room temperature, stir slowly, and add 1 mol / L NaOH solution to control the pH value of the solution to 11. After aging for 18 hours, wash, centrifugal spray and dry to obtain nano-SiO 2 -Mg 2.8 Ca 0.2...

Embodiment 2

[0027] A preparation method of high-dispersion white carbon black for rubber reinforcement, the specific steps are as follows:

[0028] S1: The nano-SiO 2 and D-sodium gluconate (0.8%) were dispersed in deionized water, after ultrasonic dispersion for 1 h, anhydrous Na was added to the suspension 2 CO 3 And stir and dissolve completely to obtain solution A;

[0029] S2: Weigh a certain amount of Mg(NO 3 ) 2 ·6H 2 O, Ca(NO 3 ) 2 ·6H 2 O, Al (NO 3 ) 3 ·9H 2 O was dissolved in deionized water to form solution B, in which SiO 2 and Mg x-nCanAl - The mass ratio of LDH is 5:3, the value of x is 3, and the value of n is 0.4, indicating that n (Mg 2+ +Ca 2+ ): n (Al 3+ ) is 3:1, n(Ca 2+ ): n(Al 3+ ) is 0.4:1;

[0030] S3: slowly add solution B to solution A at room temperature, stir slowly, and add 1 mol / L NaOH solution to control the pH value of the solution to be 11, after aging for 18h, wash, centrifugal spray and dry to obtain nano-SiO 2 -Mg 2.6 Ca 0.4 Al-LDH...

Embodiment 3

[0033] A preparation method of high-dispersion white carbon black for rubber reinforcement, the specific steps are as follows:

[0034]S1: The nano-SiO 2 and sodium D-gluconate (1%) were dispersed in deionized water, after ultrasonic dispersion for 1 h, anhydrous Na was added to the suspension 2 CO 3 And stir and dissolve completely to obtain solution A;

[0035] S2: Weigh a certain amount of Mg(NO 3 ) 2 ·6H 2 O, Ca(NO 3 ) 2 ·6H 2 O, Al (NO 3 ) 3 ·9H 2 O was dissolved in deionized water to form solution B, in which SiO 2 and Mg x-nCanAl - The mass ratio of LDH is 1:1, the value of x is 3, and the value of n is 0.8, indicating that n (Mg 2+ +Ca 2+ ): n (Al 3+ ) is 3:1, n(Ca 2+ ): n(Al 3+ ) is 0.8:1;

[0036] S3: slowly add solution B to solution A at room temperature, stir slowly, and add 1 mol / L NaOH solution to control the pH value of the solution to be 11, after aging for 18h, wash, centrifugal spray and dry to obtain nano-SiO 2 -Mg 2.2 Ca 0.8 Al-LDH co...

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Abstract

The invention discloses a preparation method of high-dispersion white carbon black for rubber reinforcement, and the preparation method specifically comprises the following steps: S1, dispersing nano SiO2 and D-sodium gluconate into deionized water, after ultrasonic dispersion, adding anhydrous Na2CO3 into a turbid liquid, and stirring for completely dissolving to obtain a solution A; s2, weighing a certain amount of Mg (NO3) 2.6 H2O, Ca (NO3) 2.6 H2O and Al (NO3) 3.9 H2O, and dissolving in deionized water to prepare a solution B; s3, slowly adding the solution B into the solution A at room temperature, slowly and uniformly stirring, controlling the pH value of the solution to be 11, aging for 16-24 hours, washing, centrifugally spraying and drying to obtain a composite material; and S4, adding the composite material obtained in S3 into an aqueous solution, uniformly mixing to obtain a suspension, then adding p-toluenesulfonic acid into the suspension, washing, centrifugally spraying and drying to obtain the modified high-dispersion white carbon black. According to the invention, nano silicon oxide and hydrotalcite are compounded, the surface of the composite material is modified, and the tire rubber with high wear resistance, low rolling resistance and high wet skid resistance is prepared by virtue of the characteristics and mutual synergistic effect of all the components.

Description

technical field [0001] The invention relates to a preparation method of highly dispersed white carbon black, and belongs to the field of rubber additives. Background technique [0002] Due to the excessive use of fossil energy, energy shortage and environmental protection have become the focus of attention. As one of the main sources of energy consumption and environmental pollution, the automobile industry is gradually developing in the direction of safety, energy saving and environmental protection. Therefore, high-performance "green tires" with high wear resistance, low rolling resistance and high wet skid resistance have become the focus of research in the rubber industry. At present, nano-silica (SiO2) is used to prepare green tires. 2 ), that is, white carbon black always has problems such as poor dispersibility, easy agglomeration and unsatisfactory comprehensive properties of rubber composite materials. Therefore, nano-silica (SiO 2 ) as a single filler into rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/30C09C3/06C09C3/08C08K9/04C08K7/26C08K3/22C01B33/18C01F7/785
CPCC09C1/3045C09C1/3063C09C1/309C09C3/06C09C3/08C09C3/006C01B33/18C08K9/04C08K7/26C08K3/22Y02T10/86
Inventor 张莉娜唐英俊方春平
Owner 江苏爱特恩高分子材料有限公司
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