Esterification process of cyanate ester resin

A cyanate ester resin and esterification technology, which is applied in the direction of control/adjustment process, chemical instruments and methods, chemical/physical process, etc., can solve the problems of unfavorable reaction uniformity and heat exchange, fixed stirring frequency, and increased viscosity of materials, etc. , to avoid large fluctuations in temperature control and improve heat transfer efficiency

Active Publication Date: 2019-09-13
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 tra...

Method used

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  • Esterification process of cyanate ester resin
  • Esterification process of cyanate ester resin
  • Esterification process of cyanate ester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A cyanate ester resin esterification process includes the following steps:

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

[0040] Step S2. Diphenol propane and triethylamine are added to a beaker containing acetone, heated in a water bath at 45°C, stirred at a rotation speed of 100r / min for 45 minutes, and allowed to stand for 30 minutes to prepare a mixture A;

[0041] Step S3, the reaction is carried out through the reactor, and the specific steps are as follows:

[0042] The first step is to add anhydrous ethanol and cyanogen chloride into the second storage tank of the reactor to form materials. The feed controller controls half of the materials to enter the kettle body, turn on the stirring motor, and the stirring motor drives the transmission rod to rotate, driving the U-shape The stirrer rotates to control the temper...

Embodiment 2

[0046] A cyanate ester resin esterification process includes the following steps:

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

[0048] Step S2. Diphenol propane and triethylamine are added to a beaker containing acetone, heated in a water bath at 45°C, stirred at a rotation speed of 100r / min for 45 minutes, and allowed to stand for 30 minutes to prepare a mixture A;

[0049] Step S3, the reaction is carried out through the reactor, and the specific steps are as follows:

[0050] The first step is to add anhydrous ethanol and cyanogen chloride into the second storage tank of the reactor to form materials. The feed controller controls half of the materials to enter the kettle body, turn on the stirring motor, and the stirring motor drives the transmission rod to rotate, driving the U-shape The stirrer rotates to control the temper...

Embodiment 3

[0054] A cyanate ester resin esterification process includes the following steps:

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

[0056] Step S2. Diphenol propane and triethylamine are added to a beaker containing acetone, heated in a water bath at 45°C, stirred at a rotation speed of 100r / min for 45 minutes, and allowed to stand for 30 minutes to prepare a mixture A;

[0057] Step S3, the reaction is carried out through the reactor, and the specific steps are as follows:

[0058] The first step is to add anhydrous ethanol and cyanogen chloride into the second storage tank of the reactor to form materials. The feed controller controls half of the materials to enter the kettle body, turn on the stirring motor, and the stirring motor drives the transmission rod to rotate, driving the U-shape The stirrer rotates to control the temper...

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PUM

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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 high molecular polymer synthesis, and is specifically a cyanate ester resin esterification process. Background technique [0002] Cyanate ester resin is a phenol derivative containing two or more cyanate ester functional groups (-OCN). It undergoes a tricyclic reaction under the action of heat and a catalyst to form a high crosslink density network containing triazine rings Structural high-performance resin. The cured cyanate ester resin has high glass transition temperature (240℃-280℃), low dielectric constant (2.8-3.2) and dielectric loss (0.002-0.008), high thermal stability and low moisture absorption ( <1.5%), excellent mechanical properties and bonding properties, can be applied to prepreg / autoclave, resin transfer molding (RTM), winding and other molding processes. [0003] Chinese invention patent CN105457586A discloses a resin reaction kettle, including a resin reaction kettle body, the resin reaction kettle...

Claims

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Application Information

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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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