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Method for testing contents of residual monomers in acrylate pressure sensitive adhesive by virtue of gas chromatography

A gas chromatography and acrylate technology, which is used in the field of gas chromatography to test the amount of various residual monomers in acrylate pressure-sensitive adhesives, can solve the problems of non-reported pressure-sensitive adhesives, etc., and achieve high sensitivity and operation Convenient, Highly Selective Effects

Active Publication Date: 2011-09-07
西安航天三沃化学有限公司
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Problems solved by technology

However, there is no reported test method for residual monomer content in pressure-sensitive adhesives

Method used

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  • Method for testing contents of residual monomers in acrylate pressure sensitive adhesive by virtue of gas chromatography
  • Method for testing contents of residual monomers in acrylate pressure sensitive adhesive by virtue of gas chromatography
  • Method for testing contents of residual monomers in acrylate pressure sensitive adhesive by virtue of gas chromatography

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Embodiment Construction

[0013] The reactive monomers of acrylate pressure-sensitive adhesives are mainly acrylates, among which isooctyl acrylate (EHA), butyl acrylate (BA), acrylic acid (AA), methyl methacrylate (MMA), acrylic acid Monomers such as hydroxyethyl ester (HEA). In this method, these monomers are successfully separated by gas chromatography, and the content of each residual monomer is determined.

[0014] Equipment: gas chromatograph with programmable temperature rise, equipped with FID hydrogen flame detector; high-purity hydrogen generator and low-noise air pump; ultra-pure nitrogen as carrier gas; high-purity hydrogen and dry air as auxiliary gas.

[0015] Chromatographic analysis conditions:

[0016] Chromatographic column: TM-FFAP 30m×0.32m×0.5μm; carrier gas flow rate: 10mL / min; split mode: splitless; H2: 40mL / min; air: 400mL / min; : 275°C; the column temperature adopts a temperature programming method: 100°C constant temperature for 5min-heating at a speed of 10°C / min to 200°C-co...

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Abstract

The invention relates to a method for testing the contents of residual monomers in an acrylate pressure sensitive adhesive by virtue of gas chromatography, in particular relating to a method for testing the contents of residual monomers in an acrylate pressure sensitive adhesive by virtue of gas chromatography. An FID (flame ionization detector) hydrogen flame detector is adopted; ultrapure nitrogen is used as a carrier gas; and ultrapure hydrogen and drying air are used as auxiliary gases. The chromatographic column is TM-FFAP 30m*0.32m*0.5 micron; the carrier gas flow is 10mL / min; the temperature of a vaporizing chamber is 180 DEG C.; the temperature of the detector is 275 DEG C.; and the column temperature uses a program warming way. In the method, a separation analysis method of residual monomers in the acrylate pressure sensitive adhesive is built, and the interferences of other substances in the actual acrylate pressure sensitive adhesive are removed by a solvent extraction method; and the method is especially suitable for measuring the contents of the residual monomers in the acrylate pressure sensitive adhesive compounded by a plurality of monomers, and has the characteristics of fast speed, reliability, convenience in operation, high selectivity and high sensitivity.

Description

technical field [0001] The invention belongs to the field of chemical analysis, and relates to a method for testing the amounts of various residual monomers in acrylate pressure-sensitive adhesives by gas chromatography. Background technique [0002] Pressure Sensitive Adhesive (PSA: Pressure Sensitive Adhesive) is a self-adhesive substance that is sensitive to pressure during the bonding process. It can form a relatively strong adhesive force under a small force. [0003] According to raw materials, pressure-sensitive adhesives can be divided into polyacrylate pressure-sensitive adhesives and other pressure-sensitive adhesives, such as silicone pressure-sensitive adhesives, and the former is the most widely used. Acrylate pressure-sensitive adhesives and products are more and more widely used due to their ease of use and improved functions. In 2002, the total output of adhesives in the world is expected to reach more than 8 million tons per year. The per capita consumption...

Claims

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Application Information

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IPC IPC(8): G01N30/30G01N30/68G01N30/08
Inventor 洪海辛屈小红薛晓春王志锋宁伟
Owner 西安航天三沃化学有限公司
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