Method for obtaining and characterizing the length of glass fibers in glass fiber reinforced nylon 6 recycled material
By employing steps such as organic solvent pretreatment, programmed temperature-controlled pyrolysis separation, and surfactant-assisted dispersion, combined with image processing software, the accuracy and environmental friendliness issues of glass fiber length measurement in recycled glass fiber reinforced nylon 6 materials were resolved, achieving efficient characterization of glass fiber length distribution.
CN122329778APending Publication Date: 2026-07-03SOUTH CHINA UNIV OF TECH +1
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-26
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
Existing technologies for measuring the length of glass fibers in recycled glass fiber reinforced nylon 6 materials suffer from problems such as complex operation, serious environmental pollution, and inaccurate measurement results.
Method used
The glass fiber length and distribution were measured and characterized by a combination of steps including organic solvent pretreatment, programmed temperature-controlled pyrolysis separation, surfactant-assisted dispersion, and density gradient purification, along with image processing software.
Benefits of technology
It enables accurate measurement and statistics of glass fiber length, reduces environmental pollution, improves measurement stability and repeatability, and maintains the original structural morphology of glass fiber.
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Abstract
This invention discloses a characterization method for determining the glass fiber length distribution in recycled glass fiber reinforced nylon 6. The method includes: firstly, pulverizing and drying the sprue material of glass fiber reinforced nylon 6 injection molded products; then pretreating the sample with an organic solvent; next, placing the pretreated sample in a muffle furnace for pyrolysis to decompose the polymer matrix and separate the glass fibers; the resulting glass fibers are then oxidized and cleaned to remove residual carbon deposits, and then ultrasonically dispersed; finally, the fiber morphology is acquired by microscopic imaging, and the glass fiber length is measured and statistically analyzed using image analysis software to obtain its length distribution characteristics. This method can effectively separate glass fibers while maintaining their length characteristics, reducing fiber agglomeration and impurity interference, and improving the accuracy and stability of glass fiber length measurement results. It can be used for performance evaluation and quality control of recycled glass fiber reinforced nylon composite materials.
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