Polyvinylidene fluoride composite membrane and preparation method thereof

A technology of polyvinylidene fluoride and vinylidene fluoride, which is applied in the field of materials, can solve the problems of not involving pigment dispersion, difficult dispersion of pigments, and affecting the uniformity of color distribution, and achieve low cost, reduced dosage, and good weather resistance.

Inactive Publication Date: 2014-12-10
SHANGHAI HIUV NEW MATERIALS
View PDF10 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVDF modified layer added 1 to 10 parts of TiO 2 and 20-45 parts of PMMA, but it does not involve the dispersion of pigments
[0004] In all the technologies mentioned

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0054] Example 1

[0055] A three-layer film was produced in a film extruder at a temperature of 245°C, consisting of a 5 micron thick layer containing 100 weight percent PVDF-1 and a 30 micron thick layer containing 70 weight percent PMMA, 10 weight percent acrylic elastomer, 10 Weight percent plasticizer, 8 weight percent TiO 2 , 2 weight percent antioxidant and UV shielding agent layer and 5 micron thick layer containing 90 weight percent PVDF-1 and 10 weight percent PMMA mixture. The production method is the casting and extrusion film forming method. Three-layer composite film with uniform thickness is obtained through a distributor, and the composite film is extruded through a die and cooled on a cooling roll and wound up.

Example Embodiment

[0056] Example 2

[0057] A three-layer film was produced in a film extruder at a temperature of 225°C, consisting of a 5 micron thick layer containing 100 weight percent PVDF-2 and a 30 micron thick layer containing 70 weight percent PMMA, 10 weight percent acrylic elastomer, 10 Weight percent plasticizer, 8 weight percent TiO 2 , 2 weight percent antioxidant and ultraviolet shielding agent layer and 5 microns thick layer containing 100 weight percent PVDF-2. The method of use is the casting extrusion film forming method.

Example Embodiment

[0058] Example 3

[0059] A two-layer film was made in a film extruder at a temperature of 245°C, consisting of a 5 micron thick layer containing 100 weight percent PVDF-3 and a 30 micron thick layer containing 70 weight percent PMMA, 10 weight percent acrylic elastomer, 10 Weight percent plasticizer, 8 weight percent TiO 2 , 2 weight percent antioxidant and UV shielding agent layer. Use blown extrusion film forming method.

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 a polyvinylidene fluoride composite membrane which is characterized by comprising an interlayer and at least one protective layer positioned on at least one side of the interlayer, wherein the interlayer comprises the following raw materials in parts by mass: 50-90 parts of PMMA, 5-30 parts of crylic acid elastomer, 0-15 parts of a plasticizer, 0-30 parts of pigment, 0-2 parts of an antioxidant and 0-2 parts of an ultraviolet screening agent; the protective layer comprises the following raw materials in parts by mass: 70-100 parts of PVDF, 0-30 parts of PMMA or crylic acid elastomer, 0-30 parts of pigment, 0-2 parts of an antioxidant and 0-2 parts of an ultraviolet screening agent. According to the invention, as the interlayer does not contain the PVDF and the pigment is completely dispersed in the PMMA, on one hand, the pigment is easy to disperse, and the color of the prepared polyvinylidene fluoride composite membrane is uniform; on the other hand, the amount of PVDF is reduced, and the production cost of the polyvinylidene fluoride membrane is saved.

Description

technical field [0001] The invention relates to the field of materials, in particular to composite materials, in particular to a polyvinylidene fluoride composite film with uniform pigment distribution and a preparation method thereof. Background technique [0002] Polyvinylidene fluoride resin (PVDF) is a fluorine-containing material with excellent comprehensive properties developed in the 1970s, which belongs to fluorocarbon thermoplastic resin. Due to the large electronegativity of fluorine element, the small van der Waals radius, the carbon-fluorine bond energy is extremely strong (up to 485KJ / mol), and the helical rod-shaped molecules in its unique fluorinated chain overall structure are compact, rigid, and smooth on the surface, making Fluoroplastics are excellent in weather resistance, heat resistance, high and low temperature resistance, and chemical resistance. The excellent characteristics of fluororesin make fluorine-containing materials (fluorine film or fluoroc...

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): B32B27/08B32B27/30C08L27/16C08L33/08C08L51/04C08L33/04
Inventor 李民
Owner SHANGHAI HIUV NEW MATERIALS
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