研究目的
The objective of this study is to improve uniformity and investigate the microstructural forming mechanisms. Comparing the physical properties (air permeability and sound insulation) of light glass fiber felts before and after process improvement helps to analyze performance and control the production process.
研究成果
Process optimization effectively improved the uniformity of light glass fiber felt, which exhibited a micro-layer structure. The improvement also enhanced the stability of permeation rate and sound insulation performance, making light glass fiber felt an excellent sound insulator.
研究不足
The study focuses on the uniformity and physical properties of light glass fiber felts produced by the flame blowing process. The limitations include the specific conditions of the flame blowing process and the focus on glass fibers with phenolic resin adhesive.
1：Experimental Design and Method Selection:
Light glass fiber felts were produced by the flame blowing process with improvements including the use of a venturi tube and cooling water to guide glass fibers and reduce temperature.
2：Sample Selection and Data Sources:
Samples were cut from different places covering the whole felt before and after process improvement.
3：List of Experimental Equipment and Materials:
Optical microscopy (BD-200) and scanning electron microscopy (JEOL JSM-6360) were used for morphology examination. A numerical air permeability tester (YG461E) and an impedance tube (AWA88551) were used for physical properties measurement.
4：Experimental Procedures and Operational Workflow:
The process involved drawing molten mineral material into primary filaments, exposing them to a hot air current, and forming glass fiber felts in a curing furnace.
5：Data Analysis Methods:
The coefficient of variation (CV) was calculated to quantify uniformity. Sound transmission loss (STL) was measured to evaluate sound insulation.
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