Process for determining residual monomers in adhesive

Abstract

The invention discloses a process for determining residual monomers in an adhesive. The process which adopts headspace gas chromatography concretely comprises the following steps: sampling through a headspace sample injector, separating through a DB-VRX chromatographic column or a chromatographic column with corresponding properties of the DB-VRX chromatographic column, detecting through a hydrogen flame ionization detector, and quantifying through an external standard method. The invention provides the process for determining residual monomers in the adhesive, and the process which has the advantages of accurate test, simple operation, high efficiency, rapidness, high precision and strong practicality is suitable for technicists in enterprises for producing tobaccos, buildings and adhesives to carry out qualitative and quantitative determination on the residual monomers of methyl methacrylate, ethyl methacrylate, methyl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, and vinyl acetate. Above technical field is improved to avoid harms of consumer bodies caused by the excess residual monomers.

Description

technical field [0001] The invention belongs to the detection field of harmful components in adhesives, and in particular relates to a method for simultaneously measuring residual monomers in adhesives by headspace gas chromatography. Background technique [0002] Adhesives are indispensable materials in industrial production processes. With the improvement of people's living standards, people's awareness of environmental protection and safety and health has gradually increased, and the quality requirements for adhesives have become higher and higher, and their safety and health have also received more attention. At present, most of the focus on adhesive detection is on benzene series, and there is insufficient attention to potentially toxic residual acrylic monomers. Residual monomers in adhesives will not only bring unpleasant pungent odors to products, but also seriously affect products. It is toxic and even carcinogenic. It is harmful to the human body after inhalation ...

AI Technical Summary

Problems solved by technology

At present, most of the focus on adhesive detection is on benzene series, and there is insufficient attention to potentially toxic residual acrylic monomers. Residual monomers in adhesives will not only bring unpleasant pungent odors to products, but also seriously affect products. It is toxic and even carcinogenic. It is harmful to the human body after inhalation or absorption through the skin. Long-term exposure can cause poisoning

At present, the methods for detecting residual monomers in adhesives include mechanical vibration extraction-gas chromatography for the analysis of vinyl acetate in white latex for cigarettes and HPLC for the determination of vinyl acetate, ethyl acrylate and n-butyl acrylate in acrylate pressure-sensitive adhesives. Esters and L.Beth Wilkinson use gas chromatography to determine the residual methacrylate, methyl methacrylate, ethyl acrylate, diisobutyl acrylate and n-butyl acrylate in the emulsion. The processing and operation are cumbersome, and the measurement will interfere with each other, while the direct sample injection method is difficult for adhesives, and the repeatability is poor, which is easy to cause errors in the analysis results

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