Plastic detection component and the technology of reductive method
Now more popular and effective domestic plastic detection component and the technology of regression analysis method is the microcosmic spectra analysis. It refers to the comprehensive use a variety of micro spectrogram analysis of unknown composition, then according to each other and confirm a technical method. This, our country has some of the bigger of the two unknown composition analysis institutions, have done a few years of trying, successful experience and case tells us that it is feasible.
Plastic formula in the process of reduction and composition detection, need to use a lot of analytical instruments, such as far/near infrared spectrometer and nuclear magnetic resonance instrument, electricity, liquid chromatograph lens (www.kepin17.com), gc instrument, also ms instrument, etc.
Each instrument analysis map, also need to use authoritative map analytical database data, contrast analysis, to confirm.
1, generally speaking, pyrolysis mass spectrometry and gas - combination analysis method is a good way to solve the plastic formula reduction and composition detection of technical problems encountered.
2, specified in the XPS/should not have obvious influence the use of visible defects, such as plastic blister, rupture, deformation, is considering a once the defect will affect the plastic products of water absorption, compression strength, thermal insulation performance, etc.
3, the main physical and mechanical properties of foam plastic are density, compression strength, thermal conductivity, dimensional stability, water vapor transmission coefficient, bibulous rate, etc., these will affect the plastic analysis of the formula.
More than 4, the use of spectrum analysis apparatus were determined, and then with the authoritative data comparison map parsing library, for example, the final test report issued by analysis.
Matters needing attention
Before making plastic reduction formula and composition detection, the most common problems, provided the standard sample is whether, or plastic items for sample preparation, without this step, it is hard to produce good effect.
For example, as a result of aging (rigid closed-cell foam plastics are mainly due to the gas composition changes over time within the obturator caused by changes in physical properties), plastic XPS analysis tests, the strength of the EPS, PU will be stable.
