Silane coupling agent and preparation method thereof

The technology of a silane coupling agent and coupling agent, which is applied in the field of chemical engineering, can solve the problems of volatilization and migration of antioxidants, incompatibility between inorganic fillers and organic materials, etc., and achieves simplified processing, outstanding anti-aging performance, and simple preparation method. easy effect

Inactive Publication Date: 2012-07-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another object of the present invention is to solve the problem that the inorganic filler is incompatible with the organic material, and the anti-aging agent volatilizes and migrates from the product

Method used

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  • Silane coupling agent and preparation method thereof
  • Silane coupling agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix the coupling agent γ-glycidyl etheroxypropyl trimethoxysilane and p-aminodiphenylamine (PPDA) in the three-necked flask at a molar ratio of 1:1, and start to pass into the three-necked flask from 5 minutes before starting to heat up Nitrogen until the end of the reaction, raise the temperature to 135°C, and continue the reaction for 3.5 hours under magnetic stirring to obtain the product. Infrared detection shows 910cm -1 The epoxy group absorption peak disappeared, and the HPLC-MS results showed that the product only contained anti-aging silane coupling agent and a small amount of PPDA.

Embodiment 2

[0021] Mix the coupling agent γ-glycidyl etheroxypropyltrimethoxysilane and p-aminodiphenylamine (PPDA) in the three-necked flask at a molar ratio of 1:1.1, and start to pass into the three-necked flask from 10 minutes before starting to heat up Nitrogen until the end of the reaction, the temperature was raised to 140 ° C, and the reaction was continued for 3 hours under magnetic stirring to obtain the product. Infrared detection shows 910cm -1 The epoxy group absorption peak disappeared, and the HPLC-MS results showed that the product only contained anti-aging silane coupling agent and a small amount of PPDA.

Embodiment 3

[0023] Mix the coupling agent γ-glycidyl etheroxypropyl trimethoxysilane and p-aminodiphenylamine (PPDA) in the three-necked flask at a molar ratio of 1:1.2, and start to pass into the three-necked flask from 15 minutes before starting to heat up. Nitrogen until the end of the reaction, the temperature was raised to 145 ° C, and the reaction was continued for 2.5 hours under magnetic stirring to obtain the product. Infrared detection shows 910cm -1 The epoxy group absorption peak disappeared, and the HPLC-MS results showed that the product only contained anti-aging silane coupling agent and a small amount of PPDA.

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Abstract

The invention discloses a silane coupling agent and a preparation method thereof. The method comprises the steps of: mixing a coupling agent (gamma-glycidyl ether oxopropyl trimethoxy-silane) and aminophenol p-diphenylamine (PPDA) according to a certain molar ratio; before temperature raising and heating, introducing nitrogen till the end of reaction, and continuously reacting for a period of time under the condition of magnetic force stirring, thus obtaining the silane coupling agent. The prepared silane coupling agent can be used for inorganic filler such as white carbon black and argil; compared with white carbon black modified with the common silane coupling agent, white carbon black modified with the silane coupling agent disclosed by the invention has an excellent aging-preventing function besides the enhancement of the compatibility between the filler and plastic matrixes, and thus the service life of mad products can be prolonged; and when applied to butylbenzene and hevea rubber, the silane coupling agent has excellent performance superior to 2-(gamma-( triethoxy) propyl group) tetrasulfide, so the silane coupling agent can completely replace the 2-(gamma-( triethoxy) propyl group) tetrasulfide to be applied to some rubber.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a silane coupling agent and a preparation method thereof. Background technique [0002] Silane coupling agent is a coupling agent with dual functional groups. Its hydrophilic group can produce chemical bonding and physical adsorption with the surface of inorganic fillers, and its lipophilic group can entangle or react with polymer resin. Its unique molecular bridge properties make inorganic fillers with widely different surface properties compatible with polymer materials, thereby greatly improving the physical and mechanical properties, electrical properties, thermal properties and optical properties of composite materials. [0003] While polymer materials have outstanding performance, they are very easy to lose their use value due to degradation or crosslinking. Therefore, how to delay the aging of products has always been a research hotspot in this field. P-pheny...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08K5/544C08L7/00C08L9/06
Inventor 潘其维梅雪赵建青王兵兵
Owner SOUTH CHINA UNIV OF TECH
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