A method and device for measuring the glass transition temperature of a resin cast body

A glass transition and resin casting technology, applied in the investigation phase/state change and other directions, can solve the problems of high cost, complexity and low demand, and achieve the effect of low equipment cost, small reading error and good reproducibility
CN105510376BInactive Publication Date: 2018-10-09CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
Publication Date
2018-10-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method and device for measuring the glass transition temperature of a resin casting body. The device comprises an oil bath pan, a dilatometer, a thermometer and a recording device. The oil bath pan comprises a heater and a pan body; oil is arranged in the pan body, and the heater is used for heating the pan body to keep the oil at the preset constant temperature. The dilatometer comprises a capillary tube and a sample pool, a ground opening is formed in the upper end of the sample pool, and the capillary tube is inserted into the sample pool in a sealed mode through the ground opening; the sample pool is used for containing sample grains and liquid media; the sample pool of the dilatometer and the lower end of the thermometer are both immersed into the oil of the oil bath pan. The recording device is arranged on one side of the oil bath pan and used for automatically recording and outputting the height of the liquid level in the capillary tube of the dilatometer and the temperature of the oil in the oil bath pan according to preset triggering conditions. By means of the method and device, the glass transition temperature of the resin casting body can be accurately measured, operation is easy, and device cost is extremely low.
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Description

technical field

[0001] The invention relates to the technical field of polymer glass transition temperature evaluation, in particular to a method and device for measuring the glass transition temperature of a resin cast body. Background technique

[0002] Glass transition temperature is a characteristic index to measure the use of polymer materials, and is an important parameter of amorphous polymer materials. In conventional adhesive testing, involving the use of the standard GB / T 2567-2008 "Resin Casting Body Performance Test Method", the internal stress must be eliminated at the glass transition temperature. At present, there are many methods for determining glass transition temperature, such as dilatometer method, thermal analysis method, nuclear magnetic resonance method, thermomechanical property method, reverse chromatography and so on.

[0003] During the glass transition process, various parameters such as thermal, mechanical, mechanical, and electrical changes wil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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