Modified porous steel slag for rubber filler and preparation method thereof

A technology of porous steel slag and rubber filler, applied in the field of resource recycling, can solve the problems of rubber agglomeration, poor compatibility, high price of filler carbon black and silica, and achieve the effects of promoting efficiency, realizing recycling, and reducing costs

Active Publication Date: 2017-06-27
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that the price of the main filler carbon black and white carbon black in the existing rubber industry is relatively high, steel slag is directly added into the rubber and easily agglomerated, and the compatibility between the inorganic interface of steel slag and the organic interface of rubber is poor, the invention provides A modified porous steel slag used for rubber filler, in order to solve the above problems

Method used

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  • Modified porous steel slag for rubber filler and preparation method thereof
  • Modified porous steel slag for rubber filler and preparation method thereof
  • Modified porous steel slag for rubber filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0029]

[0030] The mass fraction of the phosphoric acid solution is 70%; the silane coupling agent is industrially pure; the stearic acid is analytically pure; the particle diameter of the steel slag is 5.48 μm~104.30 μm, and the chemical composition (mass fraction) is SiO 2 (11.06%), Fe 2 o 3 (24.40%), Al 2 o 3 (2.30%), CaO (46.78%), MgO (5.75%), P 2 o 5 (0.91%), MnO (2.19%), SO 3 (0.23%) and others (6.38%).

[0031] Firstly, the phosphoric acid solution and the steel slag were mixed, and stirred at room temperature for 4 hours with a constant temperature magnetic stirrer to obtain the porous steel slag. Then, the porous steel slag was mixed with the silane coupling agent and stearic acid, and stirred with a constant temperature magnetic stirrer at a stirring temperature of 65° C. and a stirring time of 40 minutes to obtain th...

Embodiment 2

[0033] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0034]

[0035]

[0036] The mass fraction of described phosphoric acid solution is 80%; Described silane coupling agent is industrial pure; Described stearic acid is analytical pure; The particle diameter of described steel slag is 5.04 μ m~105.30 μ m, and chemical composition (mass fraction) is SiO 2 (14.75%), Fe 2 o 3 (12.92%), Al 2 o 3 (10.97%), CaO (46.93%), MgO (3.06%), P 2 o 5 (0.50%), MnO (1.67%), SO 3 (1.26%) and others (7.94%).

[0037] Firstly, the phosphoric acid solution and the steel slag were mixed, and stirred at room temperature for 5 hours with a constant temperature magnetic stirrer to obtain the porous steel slag. Then the porous steel slag was mixed with a silane coupling agent and stearic acid, and stirred with a constant temperature magnetic stirrer at a stirring temperature of 75° C. and a stirring tim...

Embodiment 3

[0039] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0040]

[0041] The mass fraction of the phosphoric acid solution is 90%; the silane coupling agent is industrially pure; the stearic acid is analytically pure; the particle diameter of the steel slag is 2.68 μm~92.14 μm, and the chemical composition (mass fraction) is SiO 2 (12.31%), Fe 2 o 3 (25.08%), Al 2 o 3 (1.56%), CaO (47.00%), MgO (5.61%), P 2 o 5 (0.99%), MnO (1.80%), SO 3 (0.13%) and others (5.52%).

[0042]Firstly, the phosphoric acid solution and the steel slag were mixed, and stirred at room temperature for 6 hours by using a constant temperature magnetic stirrer to obtain the porous steel slag. Then the porous steel slag was mixed with the silane coupling agent and stearic acid, and stirred with a constant temperature magnetic stirrer at a stirring temperature of 70° C. and a stirring time of 20 minutes to obtain t...

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Abstract

The invention discloses a modified porous steel slag for rubber filler and a preparation method thereof, and belongs to the field of recycling utilization of resource. The modified porous steel slag comprises phosphoric acid solution, silane coupling agent, stearic acid and steel slag; the mass percent of the phosphoric acid solution is 70-90%, the grain diameter of the steel slag is 2.2 miu m-115.0 miu m. The modified porous steel slag is prepared by firstly mixing the phosphoric acid solution with the steel slag, and stirring it for 4h-6h under the constant temperature, and acquiring the porous steel slag; then mixing the porous steel slag with the silane coupling agent and stearic acid; and mixing the components by a constant temperature magnetic mixer and acquiring the modified porous steel slag. The modified porous steel slag solves the problems that price of the main fillers carbon black and white carbon black of the existing rubber industry is very high, the steel slag is directly added in the rubber and extremely easy to cause reuniting, and the compatibility between the inorganic interface of the steel slag and the rubber organic interface is bad, and the circular use of the industrial waste is realized.

Description

technical field [0001] The invention belongs to the field of resource recycling, and in particular relates to a modified steel slag used for rubber fillers and a preparation method thereof. Background technique [0002] Steel slag is solid waste produced in the steelmaking process, accounting for about 15% to 20% of steelmaking output. Steel slag is mainly composed of oxides of calcium, iron, silicon, magnesium and a small amount of aluminum, manganese, phosphorus, etc. The main mineral phase is a solid solution formed by tricalcium silicate, dicalcium silicate, calcium magnesium olivine, calcium aluminate ferrite and oxides of silicon, magnesium, iron, manganese and phosphorus, and also contains a small amount of free calcium oxide and metal iron etc. According to China, the steel slag produced in 2014 exceeded 120 million tons, and the steel slag produced in 2015 exceeded 150 million tons. At present, the cumulative stockpiled steel slag exceeds 1 billion tons. The stoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/02C08K9/06C08K9/04C08K3/36C08K3/22C08K3/30C08K3/32C08L9/06C08L7/00
CPCC08K3/22C08K3/30C08K3/32C08K3/36C08K9/02C08K9/04C08K9/06C08K2003/2206C08K2003/222C08K2003/2227C08K2003/2262C08K2003/2272C08K2003/3009C08K2003/329C08L9/06C08L7/00
Inventor 张浩龙红明顾恒星刘秀玉唐刚
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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