Thermal insulation material glue content determination method

A thermal insulation material and measurement method technology, applied in the direction of weighing by removing certain components, can solve problems such as too much difference between the real content of the glue and the detected content, inaccurate test results, cumbersome test process, etc., to avoid violent reactions The effect of uncontrollable temperature, shortened test time, and high accuracy of test results

Inactive Publication Date: 2021-03-02
HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in industrial production, there is the TG loss-on-ignition analysis method for the determination of the glue content in T-1 thermal insulation materials. However, this method has a cumbersome test process, high

Method used

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  • Thermal insulation material glue content determination method
  • Thermal insulation material glue content determination method
  • Thermal insulation material glue content determination method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031]Example 1:

[0032]Weigh 2g of T-1 insulation material sample, accurate to 0.0001g, which is 2.0968g, place it in a 150mL beaker with constant weight, weigh the total mass of the sample and the beaker, it is 86.2641g, add acetone and ethyl acetate 40mL of ester mixed solvent prepared by weight ratio of 1:3 is placed in the beaker containing the sample, heated in a water bath at 35°C, and stirred for 1 min to make the sample fully dispersed in the beaker. After standing for 1 min, the turbid liquid is poured out after a slight precipitation. The black flocculent (carbon fiber braid) is placed in the beaker, and the mixed solvent is added repeatedly to dissolve 4 times, until the mixed solvent solution is clear and translucent after stirring and dissolving, and finally the liquid is poured out, and the beaker and the insoluble matter in the beaker are placed in a 130°C oven After drying for 0.5 h, the solution in the beaker is completely dry, transferred to a desiccator and cooled ...

Example Embodiment

[0041]Example 2:

[0042]Weigh 2g of T-1 insulation material sample, accurate to 0.0001g, which is 2.2282g, and place it in a 150mL beaker with constant weight. Weigh the total mass of the sample and the beaker, which is 85.0760g, add acetone and ethyl acetate 40mL of ester mixed solvent prepared by weight ratio of 1:2 in the beaker containing the sample, heated in a water bath at 40°C, first stirred for 2 minutes to make the sample fully dispersed in the beaker, let it stand for 2 minutes and then pour out the turbid liquid after a slight precipitation. The black floc (carbon fiber braid) is placed in the beaker, and the mixed solvent is repeatedly added to dissolve it 5 times, until the mixed solvent is clear and translucent after stirring and dissolving, and finally the liquid is poured out, and the beaker and the insoluble matter in the beaker are dried in a 150℃ oven Dry for 0.5 h, until the solution in the beaker is completely dry, move it into a desiccator to cool to room temper...

Example Embodiment

[0045]Example 3:

[0046]Weigh 2.0132g of T-1 insulation material sample and place it in a 150mL beaker with constant weight. Weigh the total mass of the sample and the beaker, which is 84.7808g, add acetone and ethyl acetate according to the weight ratio of 1:2 Mix 40 mL of the mixed solvent in the beaker containing the sample, heat it in a water bath at 40°C, stir for 2 minutes to make the sample fully dispersed in the beaker, let stand for 1 minute and then pour out the turbid liquid, leaving a black floc (carbon fiber braid) In the beaker, add the mixed solvent repeatedly to dissolve 4 times until the mixed solvent solution is clear and translucent after stirring and dissolving, and finally the liquid is poured out, and the beaker and the insoluble matter in the beaker are placed in an oven at 130°C for 1 hour to dry until the solution in the beaker is exhausted. Dried, moved into a desiccator and cooled to room temperature, weighed, and it was 83.9143 g. Calculate the glue content...

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Abstract

The invention discloses a thermal insulation material glue content determination method, which comprises: accurately weighing a thermal insulation material sample to be determined, placing in a constant weight container, adding a mixed solvent to the container, completely dispersing the sample in the solvent, carrying out standing precipitation, pouring out the liquid in the container, and remaining insoluble substances in the container; drying the container filled with the insoluble substances to completely volatilize the solution in the container, and weighing the mass of the container and the insoluble substances; and finally calculating the glue content of the thermal insulation material according to the reduced mass of the sample. The test method is simple and efficient, the test process and result are easy to judge and control, and the result with good accuracy and consistency can be obtained.

Description

technical field [0001] The invention relates to the technical field of solid rocket motor testing, in particular to a method for measuring the glue content of a T-1 thermal insulation material. Background technique [0002] The heat insulation layer is an important part of the heat-resistant structure of the solid rocket motor, which plays a role in preventing the temperature in the combustion chamber of the engine from reaching its structural integrity and resisting high temperature, high gas flow and particle erosion. [0003] Carbon fiber reinforced thermal insulation material (T-1 thermal insulation material) is made of carbon fiber braid impregnated with phenolic resin and nitrile rubber glue, which has good thermal insulation, ablation resistance, erosion resistance and other properties. The glue content of phenolic resin and nitrile rubber in T-1 thermal insulation material must be sufficient to ensure that the carbon fiber skeleton can be fully filled under the proce...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 王娜廖建苹冯晓欢黄曦徐红菊王艳艳黄水生闫志佳张炳林
Owner HUBEI SANJIANG AEROSPACE JIANGHE CHEM TECH
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