PVB (polyvinyl butyral) film with sound insulation performance and preparation method of PVB film

A sound insulation performance and film technology, which is applied in the field of PVB film and its preparation, can solve the problems of film mechanical properties decline, plasticizer precipitation, processing difficulties, etc., achieve significant economic and social benefits, uniform thickness, and improve sound insulation effect

Inactive Publication Date: 2017-11-07
忠信(清远)光伏材料科技有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, improving the structure of PVB resin, adjusting the mechanical factors of different PVB film layers by increasing the content of butyraldehyde groups, reducing hydroxyl groups, or increasing the proportion of plasticizers will have the following risks: 1. The mechanical properties of the film will decrease; 2. The aging resistance will decrease. 3. The problem of plasticizer precipitation
At the same time, due to the large difference in physical properties of materials in the preparation of multilayer films, it is difficult to form films with uniform thickness and difficult processing, resulting in poor practicability and no marketization.

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
  • PVB (polyvinyl butyral) film with sound insulation performance and preparation method of PVB film
  • PVB (polyvinyl butyral) film with sound insulation performance and preparation method of PVB film
  • PVB (polyvinyl butyral) film with sound insulation performance and preparation method of PVB film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] A kind of preparation method of above-mentioned three-layer type PVB film with sound insulation performance, comprises steps as follows:

[0043] The first step is to improve the preparation of PVB resin powder. The specific steps include:

[0044] (1) Condensation reaction: use water above 98°C and polyvinyl alcohol (PVA) in the reaction kettle to prepare a solution with a concentration of 8-10%, cool the solution to 5-10°C, and then add hydrochloric acid and normal Butyraldehyde is subjected to a condensation reaction, wherein hydrochloric acid and n-butyraldehyde respectively account for 1.0-6.0wt% and 3.0-10.0wt% of the total mass of the solution by mass percentage;

[0045]Among them, the polyvinyl alcohol (PVA) is divided into two types, one is prepared for the upper and lower outer layers of PVB film, and the viscosity of this polyvinyl alcohol (PVA) is 24-34cp / 20°C (test standard GB / T12010. 2-2010), the PVB obtained by the reaction is characterized by high melt...

Embodiment 1-6

[0050] Examples 1-6 were prepared according to the above-mentioned specific preparation methods. For specific raw materials and proportions, see Table 1. No additives were added in the comparative examples, and they were also prepared according to the above-mentioned specific preparation methods.

[0051] (1) What embodiment 1-3 adopts is PVA raw material, and PVA viscosity control is 24-34cp / 20 ℃ (test standard GB / T12010.2-2010), and reaction obtains PVB characteristic is that melting index is higher, viscosity is low, mechanical Good mechanical properties to ensure the safety of laminated glass. Used to prepare the bottom film.

[0052] (2) Implementation 4-6 uses PVA raw materials, the viscosity of PVA is controlled at 30-90cp / 20°C (test standard GB / T12010.2-2010), and the reaction synthetic sound insulation resin PVB has a low melt index, which is characterized by processing leveling Well, casting is easy to form a uniform film of 0.05-0.45mm, which is used to prepare the...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a three-layer type PVB (polyvinyl butyral) film with sound insulation performance and a preparation method. The three-layer type PVB film is prepared from resin films on a lower A layer, a middle B layer and an upper C layer through pressing, wherein the middle B layer is prepared from, in percentage by mass, 30%-60% of improved PBV resin powder and 40%-70% of a plasticizer; each of the lower A layer and the upper C layer is prepared from, in percentage by mass, 60%-80% of improved PVB resin powder and 20%-40% of a plasticizer; the improved PVB resin powder is prepared from components in percentage by mass as follows: 7.5wt%-10.0wt% of polyvinyl alcohol, 3.0wt%-10.0wt% of butanal, 1.0wt%-6.0wt% of hydrochloric acid, 0.01wt%-0.10wt% of a surfactant and the balance of pure water. The preparation method comprises steps as follows: preparation of the improved PVB resin powder and preparation of the three-layer type PVB film. The three-layer type PVB film has the function of insulating noise at 1,000-4,000 Hz after being applied to sandwich glass and improves the sound insulation effect by 3-5 dB.

Description

technical field [0001] The invention belongs to the technical field of PVB (polyvinyl butyral) film and its preparation, in particular to a PVB film with sound insulation performance and a preparation method. Background technique [0002] With the tense energy situation and the improvement of human comfort, the sound insulation of doors and windows is also increasingly on the agenda. As we all know, sound is a kind of vibration wave. The frequency that the human ear can hear is 20-20000Hz, and the particularly sensitive frequency is 1000-4000Hz. End customers in the field of sound insulation film 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 and living environments, noise reduction is a very important engineering indicator. . [0003] In the past, people usually used solids or increased the degree of glass to improve th...

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 Applications(China)
IPC IPC(8): B32B27/42B32B27/18B32B27/08B29C47/06B29L7/00C08L29/14C08F8/28C08F216/06
CPCB32B17/10761B32B17/10036B32B2250/03B32B2307/102B32B27/42B29C48/18B29L2007/002B32B27/08B32B27/18B32B2250/24B32B2307/50B32B2307/552B32B2419/00B32B2605/08C08F8/28C08L29/14C08F216/06
Inventor 陈艺中
Owner 忠信(清远)光伏材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap