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Preparation method of super-dispersed nano white carbon black

A nano-silica, ultra-dispersion technology, applied in chemical instruments and methods, dyeing polymer organic compound treatment, fibrous fillers, etc., can solve problems such as easy agglomeration

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 not only solves the problem of easy agglomeration of nano-silica, but also eliminates the problem of re-agglomeration due to high temperature, high shear, and long-term storage conditions, and also improves the phase between nano-silica and solution-polymerized styrene-butadiene rubber. Capacitance, endowing nano-silica with hyperdispersibility in solution-polymerized styrene-butadiene rubber system

Method used

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  • Preparation method of super-dispersed nano white carbon black
  • Preparation method of super-dispersed nano white carbon black
  • Preparation method of super-dispersed nano white carbon black

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of silicone / polyether polyol copolymer: first add 100 parts of KH-550 and 100 parts of cyclohexane into the reactor, stir for 1.0 hr, then add 10 parts of PPG, continue stirring and heating the reactor When the temperature reaches 95°C, 1.0 parts of potassium hydroxide is quickly added under stirring condition, and after reacting for 11 hours, it is depressurized and distilled to obtain KH-550 / PPG copolymer a.

[0044] (2) Preparation of haloacylated solution-polymerized styrene-butadiene mortar: first add 100 parts of solution-polymerized styrene-butadiene glue SSBR2564s and 100 parts of cyclohexane into the polymerization kettle, stir and heat, and when the temperature of the polymerization kettle reaches 40°C, Quickly add 0.08 part of AlCl under stirring condition 3 , until the system turns orange red, add 5 parts of phthalic anhydride, stir for 1 hr, then add 4 parts of liquid bromine, and drop 0.1 parts of HCl-CH 3 OH solution (the molar concentrat...

Embodiment 2

[0047] (1) Preparation of organosilicon / polyether polyol copolymer: same as Example 1.

[0048] (2) Preparation of haloacylated solution-polymerized styrene-butadiene mortar: same as in Example 1.

[0049] (3) Preparation of ultra-dispersed nano-silica: Take 100 parts of nano-silica (40nm), 6 parts of KH-550 / PPG 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 7 parts of haloacylated solution polystyrene-butadiene mortar a, stirring and reacting for 2.6hr, and then flashing, drying and grinding to obtain ultra-dispersed nano-silica. Sampling and analysis: standard samples were made, and the tested properties are shown in Table 1.

Embodiment 3

[0051] (1) Preparation of organosilicon / polyether polyol copolymer: same as Example 1.

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

[0053] (3) Preparation of ultra-dispersed nano-silica: Take 100 parts of nano-silica (40nm), 7 parts of KH-550 / PPG copolymer a, and 270 parts of cyclohexane into the polymerization kettle, and heat up to 48°C , stirring and reacting for 1.8hr; then adding 9 parts of haloacylated solution polystyrene-butadiene mortar a, stirring and reacting for 2.9hr, and then flashing, drying and grinding to obtain ultra-dispersed nano-silica. Sampling and analysis: standard samples were made, and the tested properties are shown in Table 1.

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Abstract

A purpose of the invention is to provide a preparation method of super-dispersed nano white carbon black filled in a solution polymerized styrene-butadiene rubber. The preparation method comprises thefollowing steps: carrying out a copolymerization reaction on polyether polyol and a silane coupling agent; carrying out multi-point anchoring modification on the surfaces of nano white carbon black particles by the generated product organosilicon / polyether polyol copolymer; carrying out acylating halogenation treatment on a solution polymerized styrene-butadiene rubber slurry by using anhydride and a halogenating agent; and finally coating the surfaces of the nano white carbon black particles with the solution polymerized styrene-butadiene rubber slurry to form a barrier layer with high connection strength to separate the nano white carbon black particles. The method improves the compatibility of nano white carbon black and a solution polymerized styrene-butadiene rubber, endows the nanowhite carbon black with super-dispersity in a solution polymerized styrene-butadiene rubber system, and is low in modification cost and small in environmental pollution.

Description

technical field [0001] The invention relates to a preparation method of nano white carbon black, in particular to a preparation method of super-dispersed nano white carbon black used for filling rubber. 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 with 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K9/06C08K3/36C08L9/06C09C1/28C09C3/12C09C3/10
CPCC08K9/10C08K9/06C08K9/08C08K3/36C09C1/28C09C3/12C09C3/10C09C3/006C08K2201/011C08L9/06
Inventor 徐典宏赵燕牛承祥魏绪玲马朋高杨绮波赵洪国
Owner PETROCHINA CO LTD
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