Preparation and application of modified kaolinic

A kaolin, modified technology, applied in fibrous fillers, tire parts, dyed low-molecular-weight organic compounds, etc., can solve the problems of high price, large storage, high pollution, etc., and achieve high filling and energy consumption. Low, simple process effect

Inactive Publication Date: 2011-01-12
WUHAN UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, compared with kaolin, carbon black reinforcing agent is expensive, has high pollution and high energy consumption, and cannot fully meet the low-carbon environmental protection requirements of the "two-oriented society". Therefore, kaolin with large storage capacity, economical and environmental protection can completely replace or partially Replacing reinforcing agents such as carbon black has become the focus of research at home and abroad

Method used

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  • Preparation and application of modified kaolinic
  • Preparation and application of modified kaolinic

Examples

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preparation example Construction

[0028] The preparation method of modified kaolin for bicycle tire cover tire provided by the invention, its steps comprise:

[0029] (1) Kaolin surface modification:

[0030] Put kaolin in a high-speed mixer, add a certain amount of medicament, stir at high speed while heating, and obtain modified kaolin at a certain temperature and time. The specific method is: when the temperature reaches 60°C, add cetyltrimethylammonium bromide (1632) with a mass fraction of 1.5%, and dilute the activator with ethanol (the mass ratio of 1632 to ethanol is 1:1-1: 3) Continue heating and stirring. When the temperature reaches 70°C, add a mixture of silane WD-81 and engine oil with a mass fraction of 2%; when the temperature reaches about 78°C, add titanate with a mass fraction of 2% (plus 1% ethanol diluted titanate); start timing at a temperature of 80°C, keep the temperature between 75°C and 90°C, and continue stirring for 20 minutes to obtain a modified kaolin product.

[0031] (2) Prepa...

Embodiment 1 and Embodiment 2

[0035] 1. Embodiment 1 and Embodiment 2 (Table 1)

[0036] The particle size of Maoming kaolin 1# sample was measured by a laser particle size tester. -2μm accounted for 60%, 2-5μm accounted for 37%, and -15μm accounted for 100%. The particle size of Maoming kaolin 2# sample was measured by a laser particle size tester. -2μm accounted for 4%, 5-10μm was 80%, and -15μm was 100%.

[0037] The specific modification process is as follows: put kaolin in a high-speed mixer, add a certain amount of medicament, stir at high speed while heating, and obtain modified kaolin at a certain temperature and time. The specific method is: when the temperature reaches 60°C, add cetyltrimethylammonium bromide (1632) with a mass fraction of 1.5%, and dilute the activator with ethanol (the mass ratio of 1632 to ethanol is 1:1-1: 3) Continue heating and stirring. When the temperature reaches 70°C, add a mixture of silane WD-81 and engine oil with a mass fraction of 2%; when the temperature reaches ...

Embodiment 3-- example 6

[0042] 2. Embodiment 3--Example 6 (Table 2 and Table 3)

[0043]Guangxi Beihai Changle Kaolin No. 1 sample was measured by a laser particle size tester, and the particle size was -2μm accounting for 32%, 2-5μm was 42%, and -15μm was 100%. The particle size of Changle kaolin is measured by the 2# sample laser particle size tester, -2μm accounts for 21%, 2-5μm accounts for 39%, and -15μm accounts for 98%. The particle size of Changle kaolin 3# sample was measured by laser particle size tester, and the particle size was -2μm, 38%, 2-5μm, 35%, and -15μm, 98%. The particle size of Changle kaolin 4# sample was determined by sedimentation method, and -2μm was 80%.

[0044] The specific modification process is as follows: put kaolin in a high-speed mixer, add a certain amount of medicament, stir at high speed while heating, and obtain modified kaolin at a certain temperature and time. The specific method is: when the temperature reaches 60°C, add cetyltrimethylammonium bromide (1632...

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Abstract

The invention relates to a preparation method of modified kaolinic, which comprises the steps of surface modification and vulcanization of the kaolinic, particularly comprises the steps of: adding the kaolinic to a high-speed mixer to be stirred; and sequentially adding 1.5% of hexadecyl trimethyl ammonium bromide, the mixture of 2% of engine oil and 2% of silane, 2% of titanate in parts by mass of the karolinic at 50 to 80 DEG C and continuously stirring for 20min to prepare modified kaolinic products. The modified kaolinic is filled into butadiene styrene rubber to prepare kaolinic/butadiene styrene rubber composite materials by utilizing the vulcanization formula; and the mechanical property of the composite materials reaches the requirements on Import and Export Bicycle Tyre Physical and Mechanical Property National Standards GB/T1153-2002. The invention provides a simple modification technology and an industrial modification medicament to the surface modification of the kaolinic; the modification effect is good; and the prepared kaolinic/butadiene styrene rubber composite materials have the advantages of excellent mechanical properties, high cost performance and wide application prospects.

Description

technical field [0001] The invention belongs to the application field of mineral materials and relates to the preparation of inorganic materials and composite material technology, specifically including the kaolin surface modification and the preparation process of kaolin / styrene-butadiene rubber composite materials. Background technique [0002] As a reinforcing agent in the rubber industry, the reinforcing effect of carbon black has an irreplaceable position. However, compared with kaolin, carbon black reinforcing agent is expensive, and has high pollution and high energy consumption, which cannot fully meet the low-carbon environmental protection requirements of the "two-oriented society". Therefore, kaolin with large storage capacity, economical and environmental protection can completely replace or partially Replacing reinforcing agents such as carbon black has become the focus of research at home and abroad. [0003] After surface treatment of kaolin, the kaolin / styre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08K13/06C08K9/06C08K9/04C08K3/34C08K5/09C08K3/22C08K3/06C09C1/42C09C3/12C09C3/08B29C35/00B60C1/00
Inventor 管俊芳杨文曾伟能杨增良高惠民张凌燕
Owner WUHAN UNIV OF TECH
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