Diphenyl sulfone-containing aminosilane coupling agent and preparing method thereof
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A technology of aminosilane coupling agent and diphenylsulfone, which is applied in the field of diphenylsulfone-containing aminosilane coupling agent and its preparation, and can solve the problems of inability to improve the dielectric properties of composite materials and the like.
Inactive Publication Date: 2008-01-16
NORTHWESTERN POLYTECHNICAL UNIV
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The above-mentioned coupling agent mainly aims to improve the mechanical properties of the
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Embodiment 1
[0023] Firstly, the instruments to be used in the reaction process are fully dried in an oven. Then, add the solvent dimethylformamide and 0.2 mol of 4,4'-diaminodiphenylsulfone into the three-necked flask successively, stir, and after the 4,4'-diaminodiphenylsulfone is completely dissolved, nitrogen gas is introduced, Heat slowly to 100-150°C, add 0.1mol of γ-chloropropylmethyldiethoxysilane dropwise, react at 150°C for 10 hours after the dropwise addition, distill under reduced pressure, and remove the solvent to obtain a yellow viscous liquid .
Embodiment 2
[0025] Firstly, the instruments to be used in the reaction process are fully dried in an oven. Then, add the solvent dimethylformamide and 0.3 mol of 4,4'-diaminodiphenylsulfone into the three-necked flask successively, stir, and after the 4,4'-diaminodiphenylsulfone is completely dissolved, nitrogen gas is introduced into the flask. Heat slowly to 100-150°C, add 0.1mol of γ-chloropropylmethyldiethoxysilane dropwise, react at 150°C for another 15h after the dropwise addition, distill under reduced pressure, remove the solvent, and obtain a yellow viscous liquid .
Embodiment 3
[0027] Firstly, the instruments to be used in the reaction process are fully dried in an oven. Then, add the solvent dimethylformamide and 0.2 mol of 4,4'-diaminodiphenylsulfone into the three-necked flask successively, stir, and after the 4,4'-diaminodiphenylsulfone is completely dissolved, nitrogen gas is introduced, Slowly heat to 100-150°C, add 0.1mol of γ-chloropropyltriethoxysilane dropwise, react at 150°C for 10h after dropwise addition, distill under reduced pressure, remove the solvent, and obtain a yellow viscous liquid.
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Abstract
The present invention relates to a coupling agent containing diphenylsulfone amino-silane and the related preparation method, which is technically characterized in that 4,4-diphenylsulfone and gamma-chloropropthyl type silane are taken as raw materials and dimethyl formamide is used as the solvent. Preparation steps are as follows: the solvent dimethyl formamide and the raw materials 4,4-diphenylsulfone are sequentially added to three flasks to be stirred until dissolved, then nitrogen gas is input to the flasks; when the flasks are slowly heated to 100 or 150 DEG C, a certain amount of gamma-chloropropthyl type silane are dropped into the flasks, after that, the liquid in the flasks is reflowed to 5 - 15 h at the right temperature; then, the coupling agent can be produced after decompression distillation and the removal of the solvent. The introduction of diphenylsulfone reduces the polarity of active amido, so that the coupling agent is provided with a low dielectric loss angle tangent value. When the coupling agent is used for glass fiber-reinforced epoxy resin or cyanate ester resin and other thermosetting resin composite materials, the dielectric performance of such composite materials can be increased, therefore, the coupling agent is widely applied to wave-transparent composite material field, such as antennas and radomes.
Description
technical field [0001] The invention relates to a diphenylsulfone-containing aminosilane coupling agent and a preparation method thereof, belonging to the field of organic synthesis. Background technique [0002] Controlling the chemical structure of the interfacial phase plays a very important role in optimizing the mechanical properties, electrical properties, and wear resistance of composite materials. Currently, the most common way to control the interfacial phase is to use coupling agents with different chemical structures. [0003] There are many kinds of existing coupling agents, and there are more than one hundred kinds of silane coupling agents with known structures. Amino silane coupling agent is one of the most commonly used silane coupling agents. According to the number of amino groups, it can be divided into monoamino, diamino, triamino and polyamino. The most commonly used aminosilane coupling agent is γ-aminopropyltriethoxysilane. [0004] Chinese patent C...
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