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A kind of cyanate ester resin esterification process

A cyanate resin, esterification technology, applied in control/adjustment process, chemical instrument and method, chemical/physical process, etc., can solve the problems of uniform reaction and heat exchange, fixed stirring frequency, low heat exchange efficiency, etc. , to avoid large fluctuations in temperature control and improve heat exchange efficiency

Active Publication Date: 2020-05-29
YANGZHOU TECHIA MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the heat exchange efficiency of the reaction kettle is low and the effect is poor, which is not conducive to quickly taking away the heat of reaction, and easily causes side reactions to occur; the stirring frequency is fixed and slow, and the mass transfer effect is poor. As the reaction progresses, the viscosity of the material becomes larger and more It is not conducive to uniform reaction and heat exchange; manual dripping, large fluctuations in temperature control, resulting in large fluctuations in product quality

Method used

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  • A kind of cyanate ester resin esterification process
  • A kind of cyanate ester resin esterification process
  • A kind of cyanate ester resin esterification process

Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] A kind of cyanate ester resin esterification process, comprises the steps:

[0039] Step S1, weighing the following raw materials in parts by weight: 10 parts of diphenolic propane, 0.5 parts of triethylamine, 35 parts of acetone, 25 parts of absolute ethanol, and 20 parts of cyanogen chloride;

[0040] Step S2, adding diphenolic propane and triethylamine into a beaker filled with acetone, heating in a water bath at 45°C, stirring at a speed of 100r / min for 45min, and standing for 30min to prepare a mixed solution A;

[0041] Step S3, reacting through the reactor, the specific steps are as follows:

[0042] The first step is to add absolute ethanol and cyanogen chloride to the second storage box of the reaction kettle to form materials. The feed controller controls half of the materials to enter the interior of the kettle body, and turns on the stirring motor. The stirring motor drives the transmission rod to rotate and drives the U-shaped The stirrer is rotated, and t...

Embodiment 2

[0046] A kind of cyanate ester resin esterification process, comprises the steps:

[0047] Step S1, weighing the following raw materials in parts by weight: 12 parts of diphenolic propane, 0.6 parts of triethylamine, 40 parts of acetone, 28 parts of absolute ethanol, and 22 parts of cyanogen chloride;

[0048] Step S2, adding diphenolic propane and triethylamine into a beaker filled with acetone, heating in a water bath at 45°C, stirring at a speed of 100r / min for 45min, and standing for 30min to prepare a mixed solution A;

[0049] Step S3, reacting through the reactor, the specific steps are as follows:

[0050] The first step is to add absolute ethanol and cyanogen chloride to the second storage box of the reaction kettle to form materials. The feed controller controls half of the materials to enter the interior of the kettle body, and turns on the stirring motor. The stirring motor drives the transmission rod to rotate and drives the U-shaped The stirrer is rotated, and t...

Embodiment 3

[0054] A kind of cyanate ester resin esterification process, comprises the steps:

[0055] Step S1, weighing the following raw materials in parts by weight: 13 parts of diphenolic propane, 0.8 parts of triethylamine, 45 parts of acetone, 32 parts of absolute ethanol, and 28 parts of cyanogen chloride;

[0056] Step S2, adding diphenolic propane and triethylamine into a beaker filled with acetone, heating in a water bath at 45°C, stirring at a speed of 100r / min for 45min, and standing for 30min to prepare a mixed solution A;

[0057] Step S3, reacting through the reactor, the specific steps are as follows:

[0058] The first step is to add absolute ethanol and cyanogen chloride to the second storage box of the reaction kettle to form materials. The feed controller controls half of the materials to enter the interior of the kettle body, and turns on the stirring motor. The stirring motor drives the transmission rod to rotate and drives the U-shaped The stirrer is rotated, and t...

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Abstract

The invention discloses an esterification process of cyanate ester resin. The process comprises the following steps: step S1, weighing the following raw materials in parts by weight: 10-15 parts of diphenolyl propane, 0.5-1.0 part of triethylamine, 35-50 parts of acetone, 25-35 parts of absolute ethanol, and 20-30 parts of cyanogen chloride; step S2, adding diphenolyl propane and triethylamine toa beaker containing acetone, performing heating in a 45 DEG C water bath, performing stirring for 45 min at a rotation speed of 100 r / min, performing taking out, and performing standing for 30 min toobtain a mixed liquid A; and step S3, carrying out a reaction through a reaction kettle. In the process, the reaction kettle has high heat exchange efficiency and good heat exchange effect, reaction heat can be quickly taken away, and thus occurrence of side reactions is not easy to cause. Materials can be subjected to cutting during stirring to avoid uneven reaction due to increased viscosity ofthe materials along a reaction is carried out, and heat exchange efficiency can be further improved by mixing with remaining materials after heat exchange is completed.

Description

technical field [0001] The invention belongs to the field of polymer synthesis, in particular to a cyanate ester resin esterification process. Background technique [0002] Cyanate resin is a phenol derivative containing two or more cyanate functional groups (-OCN), which undergoes a three-cyclization reaction under the action of heat and a catalyst to form a high cross-linking density network containing a triazine ring Structural high performance resin. Cured cyanate ester resin has high glass transition temperature (240°C-280°C), low dielectric constant (2.8-3.2) and dielectric loss (0.002-0.008), high thermal stability and low moisture absorption rate (<1.5%), excellent mechanical properties and bonding properties, and can be applied to various molding processes such as prepreg / autoclave, resin transfer molding (RTM), winding, etc. [0003] Chinese invention patent CN105457586A discloses a resin reactor, including a resin reactor body, the resin reactor body is provi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18B01J19/00B01J4/00C08G73/06
CPCB01J4/001B01J4/008B01J19/0013B01J19/002B01J19/0066B01J19/18C08G73/065
Inventor 范春晖朱芝峰邵家伟李平
Owner YANGZHOU TECHIA MATERIAL CO LTD
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