Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of internally plasticized sound-insulating pvb film and preparation method thereof

An internal plasticization and film technology, applied in chemical instruments and methods, flat products, other household appliances, etc., can solve the problem of increasing the sound energy transmission energy loss of the damping layer, the influence of film safety and processing performance, and increasing the plasticizer of the intermediate layer. Dosage and other issues, to achieve the effect of obvious sound insulation, improve mechanical properties, and increase flow properties

Active Publication Date: 2020-05-12
ZHEJIANG DECENT PLASTIC
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, among the methods proposed to increase the sound insulation effect, the amount of plasticizer in the middle layer is increased to varying degrees to increase the difference between layers, thereby increasing the energy in the process of sound energy transfer between different damping layers Loss, increase the sound insulation performance, which more or less will have a certain impact on the safety and processing performance of the film. In addition, due to the high content of plasticizer in the middle layer, it will migrate to both sides, thereby reducing the sound insulation effect.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of internally plasticized sound-insulating pvb film and preparation method thereof
  • A kind of internally plasticized sound-insulating pvb film and preparation method thereof
  • A kind of internally plasticized sound-insulating pvb film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Add 200kg of PVB resin powder and various additives (antioxidant, surface tension control agent and cohesion control agent) into the powder mixer, stir at a high speed of 1000RPM for 20 minutes, and control the temperature of the material at 40°C- between 50°C. Among them, add 28.5kg of 4,5-epoxytetrahydrophthalate dioctyl (2-ethylhexyl) plasticizer and 9.5kg of 3G8 to 100kg of resin powder at a speed of 20RPM, and stir for 5-10 minutes at a low speed , through a 52-type twin-screw extruder, the processing temperature is set between 160-190 ° C, melted and plasticized at a screw speed of 80 RPM, and the plasticized resin is introduced into the middle module of the three-layer mold; another 100 kg of resin powder is processed at 20 RPM Add 38kg of 3G8 at a high speed, stir at a low speed for 5-10 minutes, pass through a 95-type twin-screw extruder, set the processing temperature between 160-190°C, and melt and plasticize under the condition of a screw speed of 80RPM. Imp...

Embodiment 2

[0040] With 200kg PVB resin powder, 4,5-epoxy tetrahydrophthalate dioctyl (2-ethylhexyl) ester of 25.3kg, 3G8 of 12.7kg, carry out by the technique in embodiment 1, obtain sound-insulating PVB multiple layer film.

Embodiment 3

[0042] With 200kg PVB resin powder, 4,5-epoxy tetrahydrophthalate dioctyl (2-ethylhexyl) ester of 19kg, 3G8 of 19kg, carry out by the technique among the embodiment 1, obtain soundproof PVB multilayer film .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an internally-plasticized sound-insulation PVB film and a preparation method thereof. The internally-plasticized sound-insulation PVB film comprises at least three PVB film layers and is characterized in that the three PVB film layers at least comprise two types of PVB film bodies, one type of the PVB film bodies is a conventional PVB film body, the other type of the PVB film bodies is a PVB film body containing di-(2-ethylhexyl)4,5-epoxy tetrahydrophthalate serving as an internal plasticization agent, the internal plasticization agent has reaction with hydroxyl on thePVB and is grafted to the molecular chain of the PVB in the form of a lateral group to achieve a self-lubricating effect, and high flowability and good processibility are achieved. The finally obtained multilayer sound-insulation PVB film has excellent safety and processibility and also has good sound insulation performance.

Description

technical field [0001] The invention belongs to the application field of laminated films for safety glass, and in particular relates to an internally plasticized sound-insulating PVB film and a preparation method thereof. Background technique [0002] Polyvinyl butyral (hereinafter referred to as PVB) resin is the main raw material for producing PVB diaphragms and belongs to the field of thermoplastic polymer materials. After more than half a century of development, PVB film has become an essential raw material for the production of various safety glass due to its excellent optical properties, high temperature resistance, low temperature resistance, mechanical properties and good bonding performance to inorganic glass. When subjected to a strong impact from the outside world, the PVB diaphragm can absorb the impact energy without producing broken pieces. While having safety features, it has also developed functions such as sound insulation, light control, heat insulation, di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/42B32B27/18C08K5/1515C08L31/04B29D7/01
CPCB29D7/01B32B27/18B32B27/42B32B2250/24B32B2307/102B32B2307/50B32B2419/00B32B2457/12B32B2605/08B32B2605/12B32B2605/18C08K5/1515C08L31/04
Inventor 王验谢怀玉莫国军王博叶卫民
Owner ZHEJIANG DECENT PLASTIC