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Modified PVB resin powder and preparation method thereof

A resin powder and modification technology, applied in the direction of film/sheet adhesive, adhesive additive, non-polymer adhesive additive, etc., can solve the problem of reducing hydroxyl content, limited noise reduction, plasticizer precipitation, etc. problems, to avoid powder pollution, solve uneven dispersion, and improve production efficiency

Active Publication Date: 2017-03-29
ZHEJIANG DECENT PLASTIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, improving the PVB resin structure, increasing the content of butyraldehyde groups, reducing the content of hydroxyl groups, or increasing the proportion of plasticizers to adjust the mechanical loss factor of different PVB layers will have the following risks: the mechanical properties of the film will decrease, the aging performance will decrease, and the plasticizer will precipitate. and many more
However, ordinary PVB laminated glass cannot solve the coupling frequency of the glass, and the noise reduction is limited, which requires the development of high-performance PVB diaphragms

Method used

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  • Modified PVB resin powder and preparation method thereof
  • Modified PVB resin powder and preparation method thereof
  • Modified PVB resin powder and preparation method thereof

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0035] The specific preparation method is as follows

[0036] (1) Condensation reaction:

[0037] First, use 95°C water and an appropriate amount of polyvinyl alcohol in the reactor to form a solution with a concentration of less than 10%, and then cool the solution to 45°C and add an appropriate amount of additives (antioxidants, ultraviolet absorbers, nano oxides, etc.) , surface tension modifier) ​​and n-butyraldehyde were stirred for 1 h; secondly, the reaction mixture was cooled to 20° C., an appropriate amount of catalyst hydrochloric acid was added, and the reaction was kept for at least 1 hour, and then th...

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Abstract

The invention relates to modified PVB resin powder and a preparation method thereof. The modified PVB resin powder is prepared by adding an antioxidant, an ultraviolet absorber, a surface tension regulator and nano oxide which can be uniformly dispersed in resin powder in the synthesis process of PVB resin powder which is a raw material, so that the problem of non-uniform dispersion of nanoparticles and auxiliaries in the resin powder is solved, and production efficiency of extrusion and casting of PVB films is improved; blending and premixing links are omitted, so that powder pollution is avoided. The modified PVB resin powder prepared by the method has excellent temperature resistance, heat insulativity and infrared rejection rate and moderate bonding strength.

Description

technical field [0001] The invention relates to a method for synthesizing modified PVB resin powder, which belongs to the application field of glass laminated plastic films and is suitable for the production of sound-insulating and heat-insulating PVB films. Background technique [0002] Sound is a vibration wave, and the frequency to which the human ear is particularly sensitive is 1000-4000Hz. End customers in the field of glass applications are paying more and more attention to noise reduction in automobiles and architectural glass, and they are also focusing on safety factors, because noise pollution affects people's working environment and comfort. [0003] In the past, people usually used solid or a large number of product design elements to increase the thickness of the glass to improve the sound insulation performance of the glass. However, as people pay more and more attention to environmental issues, the limitations of glass design, there are certain restrictions o...

Claims

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Application Information

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IPC IPC(8): C09J129/14C09J11/04C09J11/06C09J7/00C08F16/06C08F8/28
CPCC08F8/28C08K3/22C08K5/098C08K5/13C08K5/1345C08K5/3475C08K5/524C08K5/526C08K13/02C08K2201/011C08L2201/08C08L2203/16C09J7/00C09J11/04C09J11/06C09J129/14C08F16/06
Inventor 许忠明谢怀玉陈庚叶卫民朱立疆蔡海堤王强项舒武金晓光
Owner ZHEJIANG DECENT PLASTIC
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