A kind of determination method of residual monomer content in solvent-based acrylic paint
A technology of residual monomer and determination method, which is applied in the field of determination of residual monomer content in solvent-based acrylic coatings, and can solve the problem of incomplete detection of pretreatment methods and detection methods, complicated and cumbersome steps of pretreatment methods, and affecting the accuracy of detection results To avoid the loss of residual monomers, high accuracy, and prolong the maintenance period
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Embodiment 1
[0029] A method for measuring residual monomer content in a solvent-based acrylic paint, comprising the following steps:
[0030] A. Instrument settings:
[0031] A01, the operating conditions of the vacuum drying oven: dry at 80°C for 2 hours, heat up to 120°C, continue to dry for 2 hours, and then vacuumize and dry for 1 hour, then fill it with nitrogen to normal pressure;
[0032] A02. Conditions of headspace sampler: sample equilibration temperature: 100°C; quantitative loop temperature: 120°C; transfer line temperature: 120°C; sample loop: 1.0mL; sample equilibration time: 30min; pressurization time: 0.2min; Sample time: 1.0min;
[0033]A03. Gas chromatograph conditions: capillary column: non-polar capillary column, SE-30 capillary column: 30m (length) × 0.32mm (inner diameter) × 0.5μm (film thickness); filler (stationary phase): polydimethylformaldehyde base siloxane;
[0034] Programmed temperature rise: initial temperature 50°C, keep for 2min; program temperature ri...
Embodiment 2
[0048] A method for measuring residual monomer content in a solvent-based acrylic paint, comprising the following steps:
[0049] A. Instrument settings:
[0050] A01, the operating conditions of the vacuum drying oven: dry at 80°C for 2 hours, heat up to 120°C, continue to dry for 2 hours, and then vacuumize and dry for 1 hour, then fill it with nitrogen to normal pressure;
[0051] A02. Conditions of headspace sampler: sample equilibration temperature: 100°C; quantitative loop temperature: 120°C; transfer line temperature: 120°C; sample loop: 1.0mL; sample equilibration time: 30min; pressurization time: 0.2min; Sample time: 1.0min;
[0052] A03. Gas chromatograph conditions: capillary column: non-polar capillary column, SE-30 capillary column: 30m (length) × 0.32mm (inner diameter) × 0.5μm (film thickness); filler (stationary phase): polydimethylformaldehyde base siloxane;
[0053] Programmed temperature rise: initial temperature 50°C, keep for 2min; program temperature r...
Embodiment 3
[0066] A method for measuring residual monomer content in a solvent-based acrylic paint, comprising the following steps:
[0067] A. Instrument settings:
[0068] A01, the operating conditions of the vacuum drying oven: dry at 80°C for 2 hours, heat up to 120°C, continue to dry for 2 hours, and then vacuumize and dry for 1 hour, then fill it with nitrogen to normal pressure;
[0069] A02. Conditions of headspace sampler: sample equilibration temperature: 100°C; quantitative loop temperature: 120°C; transfer line temperature: 120°C; sample loop: 1.0mL; sample equilibration time: 30min; pressurization time: 0.2min; Sample time: 1.0min;
[0070] A03. Gas chromatograph conditions: capillary column: non-polar capillary column, SE-30 capillary column: 30m (length) × 0.32mm (inner diameter) × 0.5μm (film thickness); filler (stationary phase): polydimethylformaldehyde base siloxane;
[0071] Programmed temperature rise: initial temperature 50°C, keep for 2min; program temperature r...
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