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Preparation method of ultra-dispersed nano white carbon black for rubber filler

A nano-silica, rubber filler technology, applied in fibrous fillers, chemical instruments and methods, inorganic pigment treatment and other directions, can solve problems such as easy agglomeration, achieve less environmental pollution, improve compatibility, and reduce modification costs. Effect

Inactive Publication Date: 2020-04-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method endows nano-silica with super-dispersibility, which not only solves the problem of easy agglomeration of nano-silica, but also eliminates the problem of re-agglomeration due to long-term storage, high temperature, and high shear conditions, and also improves nano-silica. Compatibility between silica and solution-polymerized styrene-butadiene rubber ensures that nano-silica particles can be uniformly dispersed into solution-polymerized styrene-butadiene rubber matrix

Method used

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  • Preparation method of ultra-dispersed nano white carbon black for rubber filler
  • Preparation method of ultra-dispersed nano white carbon black for rubber filler
  • Preparation method of ultra-dispersed nano white carbon black for rubber filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Preparation of silicone / alkylphenol polyoxyethylene ether copolymer: first add 100 parts of KH-550 and 100 parts of cyclohexane into the reactor, stir for 1.0 hr, then add 5.0 parts of NPEO, continue stirring and heating When the temperature of the reactor reaches 50°C, quickly add 0.5 parts of sodium hydroxide under stirring conditions, react for 5.0 hours, reduce pressure and distill to obtain KH-550 / NPEO copolymer a.

[0048] (2) Preparation of acylated solution-polymerized styrene-butadiene mortar: first add 100 parts of solution-polymerized styrene-butadiene mortar SSBR2564s and 100 parts of CS in the polymerization kettle 2 , stirring and heating, when the temperature of the polymerization tank reaches 40°C, quickly add 0.09 parts of AlCl under stirring conditions 3 , add 5 parts of MAH until the system becomes orange-red, stir and react for 2hr, add 5 parts of formex to terminate the reaction, filter with suction and wash to obtain acylated soluble polystyren...

Embodiment 2

[0051] (1) Preparation of organosilicon / alkylphenol polyoxyethylene ether copolymer: same as Example 1.

[0052] (2) Preparation of acylated solution-polymerized styrene-butadiene mortar: same as Example 1.

[0053] (3) Preparation of ultra-dispersed nano-silica: Take 100 parts of nano-silica (40nm), 6 parts of KH-550 / NPEO copolymer a, and 230 parts of cyclohexane into the polymerization kettle, and heat up to 45°C , stirring and reacting for 1.5hr; then adding 14 parts of acylated styrene-butadiene mortar a, stirring and reacting for 2.5hr, and then flashing, drying and grinding to obtain super-dispersed nano-silica. Sampling and analysis: standard samples were made, and the tested properties are shown in Table 1.

Embodiment 3

[0055] (1) Preparation of organosilicon / alkylphenol polyoxyethylene ether copolymer: same as Example 1.

[0056] (2) Preparation of acylated solution-polymerized styrene-butadiene mortar: same as Example 1.

[0057](3) Preparation of ultra-dispersed nano-silica: Take 100 parts of nano-silica (40nm), 8 parts of KH-550 / NPEO copolymer a, and 280 parts of cyclohexane into the polymerization kettle, and heat up to 45°C , stirring and reacting for 1.9hr; then adding 19 parts of acylated styrene-butadiene mortar a, stirring and reacting for 2.8hr, and then flashing, drying and grinding to obtain super-dispersed nano-silica. Sampling and analysis: standard samples were made, and the tested properties are shown in Table 1.

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Abstract

The invention provides a preparation method of ultra-dispersed nano white carbon black for a rubber filler. The preparation method comprises the following steps: carrying out a copolymerization reaction on alkylphenol polyoxyethylene ether and a silane coupling agent; carrying out multi-point anchoring modification on the surfaces of nano white carbon black particles by using the generated productorganosilicon / alkylphenol polyoxyethylene ether copolymer; carrying out acylation treatment on solution polymerized styrene-butadiene rubber cement; and finally coating the surfaces of the nano whitecarbon black particles to form a barrier layer with high connection strength so as to prepare the super-dispersed nano white carbon black. According to the method, the problem that the nano white carbon black is agglomerated again under the conditions of long-term storage, high temperature and high shearing is solved, the nano white carbon black is endowed with super-dispersity, meanwhile, the compatibility of the nano white carbon black and solution polymerized styrene-butadiene rubber is also improved, and nano white carbon black particles can be uniformly dispersed into a solution polymerized styrene-butadiene rubber system. The method is low in modification cost and small in environmental pollution.

Description

technical field [0001] The invention relates to a preparation method of ultra-dispersed nano white carbon black for rubber filler. Background technique [0002] Nano-silica is a porous substance, and its composition can be SiO 2 ·nH 2 O represents, where nH 2 O exists in the form of hydroxyl groups on the surface. It is a white, non-toxic, amorphous, porous fine powder, which has the characteristics of large internal surface area, dispersibility, high quality hydroxyl, high temperature resistance, non-combustibility, and good electrical insulation. , chemically stable. As an environmentally friendly additive with excellent performance, white carbon black is mainly used in rubber products and other fields. The particle size of nano-silica is small, the specific surface is large, the surface energy is high, and the surface has a large number of hydroxyl groups, so that nano-silica is easy to agglomerate, and it is not easy to disperse evenly during the mixing process with ...

Claims

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Application Information

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IPC IPC(8): C09C1/28C09C3/12C09C3/10C08K9/04C08K3/36C08G65/336C08C19/00
CPCC09C1/28C09C3/006C09C3/10C09C3/12C08K9/08C08K3/36C08G65/336C08C19/00C08K2201/011C01P2004/64C01P2006/22C01P2006/37
Inventor 徐典宏赵燕牛承祥王真琴翟云芳王在花赵洪国
Owner PETROCHINA CO LTD
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