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Method for testing surface energy of high viscosity resin

A testing method and high-viscosity technology, applied in the direction of surface/boundary effects, measuring devices, instruments, etc., can solve problems such as blockage of equipment air passages, inability to test, and testing the surface energy of high-viscosity resins

Inactive Publication Date: 2012-01-25
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the resin has a certain viscosity, directly loading it into the chromatographic column will block the gas path of the equipment and make it impossible to test, so reversed-phase gas chromatography has not been used to test the surface energy of high-viscosity resins.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Take 5 g of high-viscosity Shuangma 5428 resin and dissolve it in chloroform solvent to completely dissolve it to prepare a 5428 high-viscosity resin solution with a concentration of 5 wt%. Soak 0.2g of silanized glass wool in 5wt% high-viscosity 5428 resin solution for 24 hours, take it out and dry it to constant weight at 100°C to obtain impregnated glass wool. The soaked glass wool is packed into the chromatographic column, and the volume of the soaked glass wool is 60% of the inner cavity volume of the chromatographic column. Put the chromatographic column into the chromatographic column box of the inverse gas chromatograph, and conduct the resin surface energy test. The probe liquids used in inverse gas chromatography are n-decane, n-nonane, n-octane, n-heptane, toluene, methylene chloride, ethanol, 1,4-dioxane and acetone; the carrier gas is helium , the flow rate is 10 sccm; the test temperature is 30°C. The surface energy of the high-viscosity Shuan...

Embodiment 2

[0025] Embodiment 2: Take 1 g of high-viscosity cyanate resin and dissolve it in an acetone solvent to completely dissolve it to prepare a cyanate resin solution with a concentration of 1 wt%. Soak 0.5 g of silanized glass wool in 1 wt % high-viscosity cyanate resin solution for 48 hours, take it out, and dry it to constant weight at 80° C. to obtain impregnated glass wool. The soaked glass wool is packed into the chromatographic column, and the volume of the soaked glass wool is 80% of the inner cavity volume of the chromatographic column. Put the chromatographic column into the chromatographic column box of the inverse gas chromatograph, and conduct the resin surface energy test. The probe liquids used in inverse gas chromatography are n-decane, n-nonane, n-octane, n-heptane, toluene, methylene chloride, ethanol, 1,4-dioxane and acetone; the carrier gas is helium , the flow rate is 10 sccm; the test temperature is 25°C. The surface energy of the high-viscosity cyanate este...

Embodiment 3

[0026] Example 3: Take 2 g of high viscosity polytriazole resin and dissolve it in acetone solvent to completely dissolve it to prepare a polytriazole resin solution with a concentration of 2 wt%. Soak 0.4g of silanized glass wool in 2wt% high-viscosity polytriazole resin solution for 48 hours, take it out and dry it to constant weight at 80°C to obtain impregnated glass wool. The soaked glass wool is packed into the chromatographic column, and the volume of the soaked glass wool is 70% of the inner cavity volume of the chromatographic column. Put the chromatographic column into the chromatographic column box of the inverse gas chromatograph, and conduct the resin surface energy test. The probe liquids used in inverse gas chromatography are n-decane, n-nonane, n-octane, n-heptane, toluene, methylene chloride, ethanol, 1,4-dioxane and acetone; the carrier gas is helium , the flow rate is 10 sccm; the test temperature is 30°C. The surface energy of the high-viscosity polytriaz...

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Abstract

The invention relates to an improvement to a method for testing the surface energy of high viscosity resin, belonging to resin surface energy testing technologies. The method is based on an inverse gas chromatograph and is characterized in by comprising the following steps of: preparing a resin solution; preparing impregnated glass fiber; preparing a chromatographic column; and testing the surface energy of the resin. The invention provides a method for testing the surface energy of high viscosity resin, which solves the difficulty of testing the surface energy of high viscosity resin.

Description

technical field [0001] The invention belongs to the resin surface energy testing technology, and relates to the improvement of the high-viscosity resin surface energy testing method. Background technique [0002] Resin-based composite materials have been widely used in various high-tech fields such as aviation, aerospace, weapons, ships, electronics, construction and medical equipment, and their dosage has become an important symbol for evaluating the advanced nature of products. Resin is the premise and basis for developing resin-based composite materials. Resin surface energy is an important physical quantity to describe the surface properties of resin. According to the different intermolecular forces, it is usually divided into dispersion surface energy and polar surface energy. With the deepening of the research, people realize that the surface energy of the resin has an important relationship with the interface performance between the resin and the reinforced material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00
Inventor 石峰晖张宝艳陈祥宝
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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