TWI754485B - Sound insulation composition material - Google Patents

Abstract

The present invention relates to a sound insulation composition material, including: iron powder between 80 and 90 parts by weight, wherein the particle size of the iron powder is between 0.005 mm and 0.1 mm; polymer material between 10 and 20 parts by weight; coupling agent between 8 and 9 parts by weight; and a compatibilizer between 1 and 5 parts by weight, wherein the compatibilizer includes a maleic anhydride grafted elastomer. The sound insulation effect can be achieved by attaching the sound insulation composition material on the wall, floor, ceiling, or any similar part of a building.

Description

Soundproofing material composition

The present invention relates to a sound insulation material composition.

Noise pollution has become a social problem. According to the World Health Organization guidelines, the greater the amount of noise, the higher the risk of high blood pressure in humans. For every decibel (dB) increase in the amount of noise, the incidence of high blood pressure in humans increases by 6. %, and affect the human nervous system, make people irritable, irritable, affect sleep, etc. The amount of noise is expressed in decibels (dB) to express the unit of sound intensity. The range of noise amount is divided as follows: 40~50 decibels (dB) will interfere with sleep, 60~70 decibels (dB) will interfere with learning, 120 decibels (dB) above The amount of noise can cause ear pain and even permanent hearing loss. Most people choose to use sound-insulating materials and achieve sound-insulating effects through decoration. The sound-insulating materials include, for example, Chinese Patent Bulletin No. CN100343452C "Soundproofing Barrier System", which is a soundproofing system that exposes at least one transparent acrylic glass plate. Barrier system, the acrylic glass plate containing at least one embedded metal wire, wherein a plastic layer is at least partially provided between the surface of the metal wire and the transparent acrylic glass substrate.

The present invention provides a sound insulation material composition, comprising: an iron powder between 80 and 90 parts by weight, the particle size of the iron part is 65% of 0.075 mm and 35% of 0.04 mm; 10 to 20 of a polymer material; 8 to 9 parts by weight of a coupling agent; 1 to 5 parts by weight of a compatibilizer, the compatibilizer comprising a maleic anhydride linkage Branch elastomer.

Further, the particle size of the iron powder is between 0.03mm and 0.05mm.

Further, the polymer material comprises any one of the following or a combination thereof: polyethylene, polypropylene, ABS resin, ethylene/vinyl acetate copolymer, polyvinyl chloride.

Further, the coupling agent includes any one of the following or a combination thereof: silane coupling agent, titanium-based coupling agent.

Further, the maleic anhydride grafted elastomer comprises any one of the following or a combination thereof: polyethylene grafted maleic anhydride, polyolefin elastomer grafted maleic anhydride, SEBS grafted maleic anhydride.

Further, it includes an adjuvant between 0.1 and 0.5 parts by weight, the adjuvant comprising any of the following or a combination thereof: polyethylene wax, amide stearate, zinc stearate, magnesium stearate, stearic acid calcium.

Further, a flame retardant is included between 5 and 10 parts by weight, and the flame retardant includes a phosphorus-nitrogen-based flame retardant.

Further, the phosphorus content of the phosphorus-nitrogen flame retardant is between 18.3% and 18.5% by weight, the nitrogen content of the phosphorus-nitrogen flame retardant is between 10.1% and 10.3% by weight, the phosphorus The average particle size of nitrogen-based flame retardants is between 3 microns and 6 microns.

The above technical features have the following advantages:

1. In the present invention, iron powder, polymer materials, coupling agents and compatibilizers are made into sound-insulating material compositions, and the sound-insulating material compositions are attached to buildings such as walls, floors or ceilings to improve the sound-insulating effect.

2. The sound insulation material composition of the present invention is added with a flame retardant, so that the sound insulation material composition has the effect of flame retardant and fire prevention.

3. When the frequency of the sound insulation material composition of the present invention is from 125 (Hz) to 4000 (Hz), the sound insulation effect can be higher than the STC 27 test specification.

[The first picture] is a decibel curve diagram of the sound insulation material composition of the present invention and the STC 27 test specification at different frequencies.

In view of the above technical features, the main effects of the sound insulation material composition of the present invention will be clearly presented in the following examples.

The present invention provides a sound-insulating material composition, comprising: an iron powder between 80 and 90 parts by weight, a polymer material between 10 and 20 parts by weight, and a polymer material between 8 and 9 parts by weight. A coupling agent; a compatibilizer between 1 and 5 parts by weight, an auxiliary agent between 0.1 and 0.5 parts by weight, and a flame retardant between 5 and 10 parts by weight.

The particle size of the iron powder is between 0.005 mm and 0.1 mm, the optimum particle size of the iron powder is between 0.03 mm and 0.05 mm, and the particle size of the iron powder is 65% It consists of 0.075mm and 35% of 0.04mm.

The polymer material comprises any one of the following or a combination thereof: polyethylene, polypropylene, ABS resin, ethylene/vinyl acetate copolymer (EVA), polyvinyl chloride.

The coupling agent includes any one of the following or a combination thereof: silane coupling agent, titanium-based coupling agent.

The amount of the compatibilizer is 1% of the weight of the iron powder, the compatibilizer comprises a maleic anhydride grafted elastomer, and the maleic anhydride grafted elastomer comprises any one of the following or a combination thereof: polyethylene grafting Maleic anhydride (PP-g-MA), polyolefin elastomer grafted maleic anhydride (POE-g-MA), SEBS grafted maleic anhydride (SEBS-g-MA).

The adjuvant comprises any one of the following or a combination thereof: polyethylene wax (PE-WAX), amide stearate (EBS), zinc stearate, magnesium stearate, calcium stearate.

The flame retardant comprises a phosphorus-nitrogen flame retardant, the phosphorus content of the phosphorus-nitrogen flame retardant is between 18.3% and 18.5% by weight, and the nitrogen content of the phosphorus-nitrogen flame retardant is between 18.3% and 18.5% by weight. Between 10.1% and 10.3%, the average particle size of the phosphorus-nitrogen-based flame retardant is between 3 microns and 6 microns.

A sound-insulating panel-like structure made from the above-mentioned sound-insulating material composition, the thickness of the sound-insulating panel-like structure is between 1 and 10 mm, and the above-mentioned sound-insulating material composition can be attached to a wall surface, a floor or a ceiling, etc., through the above-mentioned sound insulating The plate-like structure improves the sound insulation effect.

It should be noted that, in the present invention, the polymer is used as the base material, and a high proportion of surface-modified iron powder is mixed, coupled with the compatibilization coupling treatment and the application of processing aids, so that the polymer/iron powder can be compounded. The density between the material interfaces is higher, and the density per unit density is higher, so it will have better sound insulation performance and can provide excellent flame resistance at the same time. The structure of the sound insulation material mainly restricts the transmission of air sound waves from one side of the material to the other side through the material. The microstructure of the sound insulation material needs to limit the transmission of air sound waves to prevent sound energy from entering a space. Therefore, the sound insulation material needs to have a denser microstructure and a higher relative density, which is different from the microstructure of sound absorbing materials. Sound insulation mechanism Longitudinal sound waves travel at the speed of sound. When the sound waves contact the sound insulation material, part of the sound waves are reflected, and the other part of the sound waves enter the sound insulation material. From the energy point of view, most of the incident sound energy is converted into the vibration energy of the sound insulation material.

As shown in Table 1, at 125 frequency (Hz), the sound insulation specification of the STC 27 is 11 decibels (dB), and the sound insulation panel structure is 27.8 decibels (dB); at 500 frequency (Hz), the STC 27 sound insulation Specifications are 27 decibels (dB), the baffle is 28.8 decibels (dB); at 1600 frequency (Hz), the STC 27 noise isolation specification is 31 decibels (dB), the baffle is 34.0 decibels (dB) ); at 4000 frequency (Hz), the STC 27 sound insulation specification is 31 decibels (dB) and the sound insulation panel structure is 39.8 decibels (dB). of the above-mentioned sound-insulating panel-like structure The frequency (Hz) from 125 to 4000 is higher than the STC 27 test specification. It can be seen that the sound insulation effect of the above sound insulation panel structure is better than the STC 27 test specification and is lower than 40 decibels (dB) to 50 decibels (dB). ) will interfere with sleep range, thus preventing noise from disturbing sleep.

Based on the descriptions of the above-mentioned embodiments, one can fully understand the operation, use and effects of the present invention, but the above-mentioned embodiments are only preferred embodiments of the present invention, which should not limit the implementation of the present invention. Scope, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention, all fall within the scope of the present invention.

Claims (6)

A sound insulation material composition, comprising: an iron powder between 80 and 90 parts by weight, the particle size of the iron powder is 65% of 0.075 mm and 35% of 0.04 mm; parts by weight are between 10 and 20 A polymer material between; a coupling agent between 8 and 9 parts by weight; a compatibilizer between 1 and 5 parts by weight, the compatibilizer comprises a maleic anhydride grafted elastomer ; A flame retardant between 5 and 10 parts by weight, the flame retardant comprising a phosphorus-nitrogen flame retardant. The sound insulation material composition according to claim 1, further, the polymer material comprises any one of the following or a combination thereof: polyethylene, polypropylene, ABS resin, ethylene/vinyl acetate copolymer, and polyvinyl chloride. The sound insulation material composition according to claim 1, further, the coupling agent comprises any one of the following or a combination thereof: a silane coupling agent and a titanium-based coupling agent. The sound insulation material composition according to claim 1, wherein the maleic anhydride grafted elastomer comprises any one of the following or a combination thereof: polyethylene grafted maleic anhydride, polyolefin elastomer grafted maleic anhydride, SEBS grafted Branch maleic anhydride. The sound insulation material composition according to claim 1, further comprising an adjuvant between 0.1 and 0.5 parts by weight, the adjuvant comprising any one of the following or a combination thereof: polyethylene wax, stearic acid amide, hard Zinc stearate, magnesium stearate, calcium stearate. The sound insulation material composition of claim 1, wherein the phosphorus content of the phosphorus-nitrogen flame retardant is between 18.3% and 18.5% by weight, and the nitrogen content of the phosphorus-nitrogen flame retardant is between 18.3% and 18.5% by weight. Between 10.1% and 10.3%, the average particle size of the phosphorus-nitrogen-based flame retardant is between 3 microns and 6 microns.

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