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Pre-processing method of rubber material element detection

A technology of rubber materials and elements, which is applied in the field of pretreatment of rubber material element detection, can solve the problems of difficult dissolution in component analysis, element loss, and influence on the component analysis of rubber products, etc., to achieve fast digestion speed, clear solution, and save pretreatment costs Effect

Inactive Publication Date: 2012-01-18
SHANGHAI FALAB TEST
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Problems solved by technology

[0008] In order to solve the problem that the existing rubber product composition analysis is difficult to dissolve or cause element loss, thus affecting the rubber product composition analysis, the present invention proposes the following technical solutions:

Method used

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Embodiment Construction

[0021] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0022] In this embodiment, the rubber sole is taken as a material sample, and the pretreatment of element detection is carried out. The specific processing steps are as follows:

[0023] A. Sample preparation: take a small piece of rubber sample, make it into a size of 2cm×2cm, and grind it into powder with a grinder;

[0024] B. Sample digestion treatment: take 0.1g rubber powder sample, place it in a polytetrafluoroethylene microwave digestion tank, add 6mL concentrated nitric acid and 2mL concentrated hydrochloric acid, and let it stand for 10 minutes;

[0025] C. Use the polytetrafluoroethylene microwave digestion tank as the main control tank, set the microwave digestion program p...

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Abstract

The invention provides a pre-processing method of rubber material element detection. The method comprises steps that: A, a sample preparation step is carried out, wherein a small block of rubber sample is crushed into powder; B, a sample digestion step is carried out, wherein a small amount of rubber powder sample is placed in a polytetrafluoroethylene microwave digestion tank, concentrated nitric acid and concentrated hydrochloric acid are added into the tank, and the materials are stood; C, the polytetrafluoroethylene microwave digestion tank is adopted as a main controlling tank, microwave digestion program parameters are configured, and microwave digestion is carried out; D, when the microwave digestion program is finished, the material is cooled to room temperature, such that a completely digested solution of the rubber sample is obtained, and the rubber sample pre-processing procedure is finished. With the method provided by the invention, a polytetrafluoroethylene digestion tank explosion phenomena is avoided; uncontrollable losses of certain elements when rubber samples are processed through a high-temperature ashing method are avoided; the operation procedure is simple, the digestion speed is fast, and pre-processing cost is saved; and the digested solution is clear, such that confounding factors during a determination procedure are reduced.

Description

[0001] technical field [0002] The invention relates to the field of component analysis of materials, in particular to a pretreatment method for element detection of rubber materials. [0003] Background technique [0004] Rubber soles are soles made of rubber, which can be divided into natural rubber and synthetic rubber. Natural rubber is processed by extracting gum from rubber trees, rubber grass and other plants, and synthetic rubber is obtained by polymerization of various monomers. The advantages of rubber soles lie in their wear resistance and flexibility, and are widely used in footwear. [0005] While the technology of rubber soles is progressing and widely used, the impact of certain elements and various additives in rubber soles on human health has attracted more and more attention, and has gradually become one of the items that must be tested for rubber soles and their products. . However, rubber shoe soles are one of the most difficult samples to be dissolv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/38
Inventor 孙道元
Owner SHANGHAI FALAB TEST
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