Qualitative detection method for vulcanization accelerator in rubber and application of qualitative detection method

A technology of vulcanization accelerator and qualitative detection, which is applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of difficult qualitative detection of vulcanization accelerators, inability to qualitatively detect vulcanization accelerators, etc., and achieves improved qualitative accuracy and high grinding efficiency. , The effect of high qualitative detection accuracy

Active Publication Date: 2021-05-25
上海微谱检测科技集团股份有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most rubbers (including natural rubber and various synthetic rubbers) need to be vulcanized. However, with the compound use of vulcanization accelerators in the rubber vulcanization process, it is difficult to qualitatively detect vulcanization accelerators. The current detection The method is still unable to qualitatively detect various vulcanization accelerators in rubber

Method used

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  • Qualitative detection method for vulcanization accelerator in rubber and application of qualitative detection method
  • Qualitative detection method for vulcanization accelerator in rubber and application of qualitative detection method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1 of the present invention provides a kind of qualitative detection method of vulcanization accelerator in rubber, specifically as follows:

[0055] (1) 3g of mixed rubber is frozen, ground and pulverized for 15s;

[0056] (2) Use 10 mL of organic solvent to ultrasonically wash the rubber ground and pulverized in step (1) at 35° C. for 3 times, each time for 30 minutes, to obtain an extract;

[0057] (3) The extract is subjected to GC-MS test analysis.

[0058] The organic solvent is methanol and chloroform with a volume ratio of 1:2.

[0059] The resulting GC-MS spectrum is shown in figure 1 , see MS spectrum figure 2 .

[0060] From figure 1 and figure 2 According to the analysis, the vulcanization accelerators in the mixed rubber are 2,2'-dithiodibenzothiazole (DM), tellurium diethyldithiocarbamate (TDEC), tetramethyl Qiumonosulfide Lamb (TMTM), tetramethylthiuram disulfide (TMTD), the accuracy rate reaches 100%.

Embodiment 2

[0062] Embodiment 2 of the present invention provides a kind of qualitative detection method of vulcanization accelerator in rubber, specifically as follows:

[0063] (1) 3g of mixed rubber is frozen, ground and pulverized for 15s;

[0064] (2) Use 20 mL of organic solvent to ultrasonically wash the ground rubber in step (1) at 35° C. for 3 times, each time for 30 minutes, to obtain an extract;

[0065] (3) The extract is subjected to GC-MS test analysis.

[0066] The organic solvent is methanol and chloroform with a volume ratio of 1:1.

[0067] The vulcanization accelerator obtained by GC-MS analysis is consistent with the theoretical value, and the accuracy rate reaches 100%.

Embodiment 3

[0069] Embodiment 3 of the present invention provides a kind of qualitative detection method of vulcanization accelerator in rubber, specifically as follows:

[0070] (1) 3g of mixed rubber is frozen, ground and pulverized for 15s;

[0071] (2) Use 15 mL of organic solvent to ultrasonically wash the ground rubber in step (1) at 35° C. for 3 times, each time for 30 minutes, to obtain an extract;

[0072] (3) The extract is subjected to GC-MS test analysis.

[0073] The organic solvent is methanol and chloroform with a volume ratio of 1:3.

[0074] The vulcanization accelerator obtained by GC-MS analysis is consistent with the theoretical value, and the accuracy rate reaches 100%.

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Abstract

The invention relates to the field of rubber detection, in particular to a qualitative detection method for a vulcanization accelerator in rubber and application of the qualitative detection method, and the qualitative detection method for the vulcanization accelerator in the rubber comprises the following steps: (1) grinding and crushing the rubber; (2) carrying out ultrasonic washing on the rubber ground and crushed in the step (1) for n times by using an organic solvent to obtain an extracting solution, n being greater than or equal to 2; and (3) performing GC-MS test analysis on the extracting solution. The qualitative detection method for the vulcanization accelerator in the rubber is simple to operate, suitable for qualitative detection of the vulcanization accelerator in various kinds of rubber, and high in qualitative detection accuracy.

Description

technical field [0001] The invention relates to the field of rubber detection, more specifically, the invention relates to a qualitative detection method and application of a vulcanization accelerator in rubber. Background technique [0002] Since the rubber structure contains double bonds, it is easily oxidized and its mechanical properties are reduced. If you want to improve the stability of the mechanical properties of rubber products, you must vulcanize the rubber to increase the degree of crosslinking of the rubber. Vulcanization refers to the formation of a three-dimensional three-dimensional network structure by chemically cross-linking the linear macromolecules of rubber under certain conditions such as temperature, pressure and vulcanization time. The vulcanization accelerator is mixed in the rubber compound, which can shorten the vulcanization time, lower the vulcanization temperature, reduce the amount of sulfur used, and increase the physical and mechanical prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/88
CPCG01N30/06G01N30/88Y02W30/62
Inventor 吴杰耿遥杰李亚威李亚楠
Owner 上海微谱检测科技集团股份有限公司
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