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PVB (polyvinyl butyral) film having sound-insulating property and preparation method thereof

A technology of sound insulation performance and diaphragm, applied in the field of PVB diaphragm and its preparation, can solve problems such as insufficient noise reduction effect, and achieve the effects of reducing coupling frequency, good effect and convenient use

Active Publication Date: 2013-04-17
吴莉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the coupling frequency is within the sensitive frequency range of the human ear, improving the coupling frequency is the key to noise reduction. Compared with single-layer glass, a PVB diaphragm of the same thickness has a noise reduction effect, but the coupling frequency still exists. Therefore, general PVB Diaphragm is not enough to achieve very good noise reduction

Method used

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  • PVB (polyvinyl butyral) film having sound-insulating property and preparation method thereof
  • PVB (polyvinyl butyral) film having sound-insulating property and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Take polyethylene glycol 200: 100g, 3G7: 300g, PVB resin powder: 600g, antioxidant 1076: 10g, ultraviolet absorber 327: 5g, after uniform mixing in a high-speed mixer, pass through a twin-screw extruder at 160 The temperature is plasticized at a temperature of ℃, and the PVB film with sound insulation performance is obtained by forming a film through a mold.

Embodiment 2

[0034] Take polyethylene glycol 600: 200g, 4GO: 300g, PVB resin powder: 500g, antioxidant 1135: 16g, ultraviolet absorber UV-P: 5g, after uniform mixing in a high-speed mixer, pass through a twin-screw extruder Plasticized at a temperature of 140° C., and formed into a film through a mold to obtain the PVB film with sound insulation performance.

Embodiment 3

[0036] Take polyethylene glycol 800: 200g, DBS: 200g, PVB resin powder: 700g, antioxidant 1076: 15g, ultraviolet absorber 327: 8g, after uniform mixing in a high-speed mixer, through a twin-screw extruder in Plasticized at a temperature of 170° C., and formed into a film through a mold to obtain the PVB film with sound insulation performance.

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Abstract

The invention provides a PVB (polyvinyl butyral) film having sound-insulating property, which comprises the following components in percentage by mass: 10-30% of polyethyleneglycol, 19-40% of plasticizer, 40-70% of PVB resin powder, 0.1-2% of antioxidant and 0.05-1% of ultraviolet absorbent. The invention also provides a preparation method of the PVB film having sound-insulating property, which comprises the following steps: adding the viscoelastic substance polyethyleneglycol into the plasticizer, uniformly stirring, and then adding into the PVB resin powder; and plastifying in a plastic extruding machine, and performing film formation through a mold, thus obtaining the PVB film. The invention has the advantages of simple process, convenience in use and satisfactory effect, and can well lower the coupling frequency and further improve the sound-insulating property in comparison with the traditional PVB film.

Description

technical field [0001] The invention relates to a PVB diaphragm with sound insulation performance and a preparation method thereof. Background technique [0002] Since the introduction of polyvinyl butyral (hereinafter referred to as PVB) film laminated glass in the United States in 1935 and its use in automobiles by law in 1938, especially since 1964, for the safety of passengers, high-wear glass has been gradually developed. Through the PVB membrane laminated glass is now used as a standard in many countries. However, with the development of the times, the requirements of passengers have gradually increased, so it is necessary to develop PVB membranes with special functions to produce laminated glass, of which sound insulation is the most representative. [0003] Sound is a kind of vibration wave. The sound frequency that can be heard by the human ear is: 20-20000 Hz, and the particularly sensitive frequency is 1000-4000 Hz. Noise reduction is an important factor for pas...

Claims

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Application Information

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IPC IPC(8): C08L29/14C08L71/08C08K5/06C08K5/103C08K5/11B29C47/92B29C48/92
CPCB29C48/08B29C48/40B29C48/92B29C2948/92704B29C2948/92895
Inventor 卢士海殷发强蒋愿朱仕惠何佳文
Owner 吴莉
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