Method for determining impurity content of recycled plastic and application of method

A technology of impurity content and recycled plastics, which is applied in the field of determination of impurity content of recycled plastics, can solve the problems of impurity and impurities that are difficult to distinguish and detect, and achieve the effect of reducing measurement deviation

Pending Publication Date: 2022-07-05
上海睿聚环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology helps measure both physical and chemistry properties of recycling materials more accurately than existing methods such as colorimetric or inductive techniques alone. It uses various types of sensors like optical fibers, pressure-sensitive devices (PSD), atomic force microscopes, scanning electron microscope(SEM)/microelectronics systems, etc., along with computer software programs running on computers to process data from these measurements. By analyzing and comparing different measurement values obtained through this technique, we aimed at understanding how well they were made without being affected by any factors other than just their own presence.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to prevent environmental contamination caused by waste disposable plastic product usage while ensuring proper reuse or use thereof. Current methods involve testing each type of plastomer separately before making them into new ones, leading to potential errors when analyzing different types of plastsoners mixed together without identifying any other colors.

Method used

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Embodiment 1

[0038] A method for measuring the impurity content of recycled plastics. First, sample pretreatment is performed, and 75 mg of recycled polypropylene plastics are weighed, put into a vulcanizer for tableting, and pressed for 2 minutes under a pressure of 20Mpa. The thickness of the obtained tableting is 9 μm, 100 μm in diameter. The prepared sample tablet was put into a scanning electron microscope for scanning detection, the grade of heterochromatic impurities in the sample tablet was evaluated, and the grade score of the heterochromatic impurity of the sample tablet was calculated.

[0039] Put the prepared sample tablet into a Fourier transform infrared spectrometer to scan the infrared spectrum, scan the infrared spectrum at a wavelength of 0.75-25 μm, and compare the infrared spectrum of the sample with the standard infrared spectrum of recycled plastics. The impurity components contained in the sample are compared and quantitatively calculated according to the peak area ...

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PUM

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Abstract

The invention discloses a method for determining the impurity content of recycled plastic. The method comprises the steps of sample pretreatment, sample detection, impurity analysis and generation of a quantitative estimation model. According to the method for determining the impurity content of the regenerated plastic, physical detection and chemical instrument detection are combined, the content of visible impurities in the regenerated plastic can be analyzed and detected, and the content of invisible impurities can also be analyzed and detected. According to the method, qualitative analysis and quantitative analysis are carried out on the impurity content in the recycled plastic, the impurity components and content in the same recycled plastic can be generally known, an impurity quantitative estimation model can be generated according to the impurity analysis result of the recycled plastic, and the impurity content of the same recycled plastic sample can be estimated.

Description

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Claims

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Application Information

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Owner 上海睿聚环保科技有限公司
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