Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of low-haze polyvinyl butyral membrane

A technology of polyvinyl butyral film and polyvinyl butyral resin, which is applied in the field of preparation of low-haze polyvinyl butyral film, can solve the problem that haze quality is difficult to improve and haze remains and other issues, to achieve the effect of improving transparency and perception, and improving security

Active Publication Date: 2018-10-19
ZHEJIANG DECENT PLASTIC
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a relatively direct and simple method to obtain a film with lower haze by reducing the haze of polyvinyl butyral resin powder, but due to the production process of polyvinyl butyral resin powder, it will be more or less There are impurities (mainly inorganic salts) that cause haze remaining, and it is difficult to improve the quality of haze

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
  • Preparation method of low-haze polyvinyl butyral membrane
  • Preparation method of low-haze polyvinyl butyral membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Partially acetalized polyvinyl butyral resin and plasticizer are mixed, extruded and cast into PVB film, and the specific steps are as follows:

[0027] Put PVB resin powder, mixed plasticizer, and additives into the twin-screw extruder in a metered manner. The length-to-diameter ratio is 36:1. Melting and plasticizing under certain conditions, through a T-shaped mold with an opening of 0.5mm-0.8mm, a PVB film with a thickness of 0.76mm is formed, cooled and shaped, and coiled into a finished product.

[0028] On the basis of selecting 28%, which is representative in the industry, as the mass % of the mixed plasticizer in the film, according to the composition of the mixture given in the table below, the film was extruded by the above method, and the haze of the film was tested.

[0029]

[0030]

[0031] Wherein: mass % represents the mass percentage of the plasticizer in the total material composition of the film.

[0032] 3G8 represents triethylene glycol diis...

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 belongs to the technical field of a laminated glass intermediate membrane and relates to a preparation method of a low-haze polyvinyl butyral membrane. According to the method, partly acetalized polyvinyl butyral resin is plasticized with a plasticizer. the plasticizer is a mixed plasticizer, which at least contains a plasticizer A and a plasticizer B. Refractive index of the plasticizer A is less than or equal to 1.46, and refractive index of the plasticizer B is greater than 1.48 and less than or equal to 1.54. Refractive index of the above mixed plasticizer is 1.45-1.52. The above plasticizer A is selected from Triglycol dioctate, dioctyl sebacate or tetraethylene glycol di-n-heptanoate; and the plasticizer B is selected from diisononyl phthalate, dimethyl phthalate or phthalic phenyl dibutyl ester. by the preparation method of the low-haze polyvinyl butyral membrane, the polyvinyl butyral membrane with the haze being lower than 0.3 can be prepared, and the haze can reach 0.2 or below under optimization condition.

Description

technical field [0001] The invention belongs to the technical field of laminated glass interlayer films, and relates to a preparation method of a low-haze polyvinyl butyral film. Background technique [0002] Laminated glass usually consists of two glass sheets and an intermediate film that bonds the sheets. At present, the intermediate film used for laminated glass is mainly polyvinyl butyral film (PVB film), PVB film is made of polyvinyl butyral resin, plasticizer and auxiliary agent through screw extruder mixing Processing and forming, laminated glass produced by PVB film is widely used in the automotive field, windshield, construction field, facade components, or for the manufacture of photovoltaic modules. [0003] Haze is one of the important elements to evaluate the optical properties of laminated glass. When the PVB film with high haze is used in the fields of automobiles and buildings, it will have a great impact on the appearance of laminated glass, especially wh...

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
IPC IPC(8): C08L29/14C08K5/103C08K5/11C08K5/12C08J5/18
CPCC08J5/18C08J2329/14C08K5/103C08K5/11C08K5/12
Inventor 王博谢怀玉莫国军王验
Owner ZHEJIANG DECENT PLASTIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com