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Silicon-containing polymer treatment method and application thereof

A silicon polymer and processing method technology, which is applied in the preparation of test samples, thermal excitation analysis, material excitation analysis, etc., can solve the loss of silicon element, the difficulty of accurate processing of rubber containing trace silicon, and the qualitative analysis of coupling agent. , quantitative difficulties and other problems, to achieve the effect of zero loss

Inactive Publication Date: 2019-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small amount of coupling agent used, it is difficult to qualitatively and quantitatively determine the coupling agent
[0004] The existing quantification method of silicon content of solution-polymerized styrene-butadiene rubber is usually ashing method, and the ordinary ashing method will easily lead to the loss of silicon element in the sample processing process, which increases the difficulty of sample processing, and at the same time, the quantitative method of silicon element The analysis is also restricted by many factors, such as the external environment, reaction vessels, etc., which further increases the difficulty of accurate processing of rubber containing trace amounts of silicon.

Method used

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  • Silicon-containing polymer treatment method and application thereof
  • Silicon-containing polymer treatment method and application thereof

Examples

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Embodiment 1

[0052] This example is used to illustrate the treatment method and application of the silicon-containing polymer of the present invention.

[0053] (1) Cut the silicon-containing polymer sample into particles with a particle size of less than 2mm, weigh the silicon-containing polymer sample (accurate to 0.0001g) in the microwave digestion inner tank, then add acid, and shake the digestion tank to mix evenly; Wherein, the kind and consumption of each material are shown in Table 1;

[0054] (2) Place the digestion vessel in a microwave digestion apparatus, raise the temperature to the specified temperature under the specified power within the specified time, and keep it at this temperature for microwave digestion for a certain period of time. After the sample is cooled to below 60°C, take out the digestion vessel , after carefully releasing the pressure, take out the inner tank, see Table 1 for the digestion conditions of the samples; see Table 1 for the digestion conditions;

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Embodiment 2-6

[0058] This example is used to illustrate the treatment method and application of the silicon-containing polymer of the present invention.

[0059] According to the method described in Example 1, the difference is that the sample and microwave digestion treatment conditions adopted in the steps (1)-(2) are shown in Table 1; the digestion situation of the sample is shown in Table 1, and the obtained average silicon content, relative The standard deviation and spiked recovery are shown in Table 2.

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Abstract

The invention relates to the field of polymer sample treatment, in particular to a silicon-containing polymer treatment method and an application thereof. The treatment method comprises the steps of (1) mixing a silicon-containing polymer with acid, wherein the acid is concentrated nitric acid or a mixture of the concentrated nitric acid and concentrated sulfuric acid; and (2) in a closed system,carrying out microwave digestion treatment on the mixture obtained by mixing, wherein the temperature of the digestion treatment is 170-195 DEG C, and the time for microwave digestion treatment is more than 20 min. The silicon-containing polymer treatment method can be used for extracting trace silicon in the silicon-containing polymer in a simple, quick and zero-loss manner, and then is used forinductively coupled plasma emission spectrum measurement, so that the content of the trace silicon in the polymer can be measured in a high-stability manner; and the method has a guiding effect especially for production of solution polymerized styrene-butadiene rubber.

Description

technical field [0001] The invention relates to the field of polymer sample processing, in particular to a silicon-containing polymer processing method and application thereof. Background technique [0002] Solution-polymerized styrene-butadiene rubber is a copolymer of butadiene and styrene in a hydrocarbon solvent using organic lithium to initiate anionic polymerization. Solution-polymerized styrene-butadiene rubber has the advantages of wear resistance, cold resistance, low heat generation, high resilience, low shrinkage, good color, less ash, high purity and fast vulcanization speed. It has developed rapidly in developed countries in recent years. Solution-polymerized styrene-butadiene rubber is widely used in the manufacture of tires, industrial parts such as belts, wipers, window frame seals and radiator hoses, as well as daily necessities such as rubber shoes, raincoats, felt cloth, gloves, windbreakers and air mattresses. [0003] In the process of synthesizing solu...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/44G01N21/73
Inventor 姜涛伦志红黄铃杨娟
Owner CHINA PETROLEUM & CHEM CORP