High-density polyethylene sound-absorbing cotton and preparation method thereof

Abstract

The invention discloses high-density polyethylene sound-absorbing cotton. The high-density polyethylene sound-absorbing cotton consists of a top surface layer, a back face layer and a fiber-cotton layer clamped between the top surface layer and the back face layer, wherein the top surface layer and the back face layer are made of a non-woven fabric. The high-density polyethylene sound-absorbing cotton is characterized in that the non-woven fabric is made from the following raw materials in parts by weight by means of melt blowing: 100 parts of isotactic polypropylene, 12-15 parts of EVA (Ethylene-Vinyl Acetate) resin, 5-8 parts of high-density polyethylene, 2-3 parts of glass fiber, 4-5 parts of barium sulfate, 10-12 parts of phthalic acid ester, 2-3 parts of silane coupling agent KH-550, 1-2 parts of melamine cyanurate, 1-2 parts of ethyl cellulose, 2-3 parts of rosin, 4-5 parts of oxidation castor oil, 10-12 parts of sawdust, 12-15 parts of active carbon, 3-4 parts of corncob, 2-3 parts of corydalis tuber, 1-2 parts of red-rooted salvia root, 1-2 parts of safflower and 4-5 parts of addition agent. The prepared high-density polyethylene sound-absorbing cotton has the advantages of non-hygroscopicity, high vapor resistance, high strength, high air permeability, chemical corrosion resistance and wide application field.

Description

[0001] technical field [0002] The invention relates to nonwoven fabric technology, in particular to a high-density polyethylene sound-absorbing cotton and a preparation method thereof. Background technique [0003] Noise directly affects people's physical and mental health and the improvement of quality of life. Long-term exposure to noise can cause hearing loss and even induce some diseases. To stay away from noise, all we can do is sound absorption and sound insulation. Sound-absorbing cotton can convert the vibration energy of medium and high-frequency noise generated in life into the kinetic energy of the fine denier fibers inside the sound-absorbing cotton and conduct it into heat energy and disappear, achieving the function of sound absorption and noise reduction. [0004] Sound-absorbing cotton can be laminated with multiple layers of non-woven fabrics, or combined with other materials to make sound-absorbing and sound-insulating materials. Non-woven fabrics are o...

AI Technical Summary

Problems solved by technology

However, there are many deficiencies in the existing sound-absorbing cotton products and their manufacturing methods, mainly as follows: the production process is not environmentally friendly; Flame retardant treatment; insufficient adhesion, easy to disperse, poor tensile strength; insufficient appearance and flatness, large deviation in thickness, etc.