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Method for measuring and calculating storage temperature of rosin and modified resin thereof

A modified resin and storage temperature technology is applied in the field of measurement and calculation of the storage temperature of rosin and its modified resin, and can solve the problems that do not involve the measurement and calculation of the storage temperature of rosin and its modified resin products.

Active Publication Date: 2020-12-08
GUANGXI UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of these studies involved the determination and calculation of the storage temperature of rosin and its modified resin products and other related technologies, and the quality decline caused by other reactions was rarely involved in the literature.
[0006] It can be seen that there is currently no report on the use of C80 to study the reaction changes of rosin and its modified resins during storage, especially about the measurement and calculation methods of its storage temperature.

Method used

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  • Method for measuring and calculating storage temperature of rosin and modified resin thereof
  • Method for measuring and calculating storage temperature of rosin and modified resin thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Take 0.1 gram of rosin and put it into the C80 experimental sample container, fill it with oxygen 0.4MPa (4.0atm) at 25°C, and carry out the rosin reaction experiment. Using the H-T and dH / dt-T curves, the initial exothermic temperature of rosin is 43.5°C, that is, T onset =43.5°C (316.55K), T is calculated according to formula (1) 0 =26.9°C, that is, the storage temperature is below 26.9°C.

Embodiment 2

[0033] Take 0.2 grams of light-colored rosin and put it into the C80 experimental sample container, fill it with oxygen 1.0MPa (10atm) at 25°C, and carry out the oxidation reaction experiment. ℃. Using the H-T and dH / dt-T curves, the initial exothermic temperature of light-colored rosin is 48.3°C, that is, T onset =48.3°C, T is calculated according to formula (1) 0 =31.2°C, that is, the storage temperature is below 31.2°C.

Embodiment 3

[0035] Take 0.5 g of rosin pentaerythritol ester and put it into the C80 experimental sample container, fill it with oxygen at 1.2 MPa (12 atm) at 25 ° C, and carry out the oxidation reaction experiment. ℃. Using the H-T and dH / dt-T curves, the initial exothermic temperature of rosin pentaerythritol ester is 46.7°C, that is, T onset =46.7°C, T is calculated according to formula (1) 0 =29.8°C, that is, the storage temperature is below 29.8°C.

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Abstract

The invention discloses a method for measuring and calculating the storage temperature of rosin and modified resin thereof, which comprises the following steps: measuring the reaction heat release conditions of rosin and modified resin thereof by using a thermal analyzer C80 to obtain a curve H-t of heat flow changing along with time, a curve H-T of heat flow changing along with temperature and acurve dH / dt-t of heat flow differential changing along with time, a dH / dtT curve of heat flow differential along with temperature changes; then, according to the characteristics of the curves Ht, HT,dH / dtt and dH / dtT, obtaining the initial temperature of reaction heat release of the rosin and the modified resin thereof, and calculating the proper storage temperature of the rosin and the modifiedresin thereof according to a specific formula. The method provides a scientific basis for the production, storage and transportation of rosin and rosin modified resin and the use of products, is beneficial to reducing the problem of quality reduction of rosin and rosin modified resin products caused by improper storage, and ensures the normal use and price of related products.

Description

technical field [0001] The invention belongs to the technical field of storage of rosin and its modified resin, and in particular relates to a method for measuring and calculating the storage temperature of rosin and its modified resin. Background technique [0002] Rosin is a product isolated from pine resin, which undergoes chemical transformation to obtain a series of rosin modified resins. They are widely used in inks, emulsions, adhesives, coatings, papermaking and other fields. [0003] Storage methods and conditions are very important for the storage, transportation and use of rosin and its modified resin products. In recent years, when rosin and its modified resin products are exported, because the storage method and storage conditions are not considered, the product quality has changed, resulting in returns or lower grades for sale. Although there are many ways to evaluate the product quality of rosin and its modified resins, such as softening point, acid value an...

Claims

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Application Information

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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 刘玭刘雄民李伟光黄品鲜马丽赖芳
Owner GUANGXI UNIV
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