Inorganic powder highly filled polyvinyl alcohol composite material and preparation method thereof

A composite material, polyvinyl alcohol technology, applied in the field of inorganic powder highly filled polyvinyl alcohol composite material and its preparation, can solve the problems of difficult recycling, increased preparation process and material cost, poor surface printing performance, etc., to achieve Avoidance of costs and additional processes, ease of recycling, good thermoplastic processing effects

Active Publication Date: 2012-08-22
SICHUAN UNIV
View PDF11 Cites 45 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Inorganic powder needs to be modified on the surface, resulting in complex process and high cost
Due to the weak interaction between untreated inorganic powder and resins such as polyethylene and polypropylene, when the content of inorganic powder is high, its dispersion with the material matrix will become poor, resulting in poor processability and mechanical properties of the material, making it difficult to To meet the application requirements, it is necessary to design and control the interface of the inorganic powder at different levels, and to activate and modify the surface of the inorganic powder through an expensive coupling agent, resulting in an increase in the preparation process and material costs
[0004] 2. Difficult to recycle and recycle, poor environmental friendliness
Since polyethylene, polypropylene, polyvinyl chloride and other resins are not easy to degrade under natural conditions, and the processing performance of inorganic powder high-fill materials is poor, it is difficult to recycle and cause adverse effects on the environment
[0005] 3. Poor printing performance of composite materials
Due to the weak polarity of polyethylene, polypropylene, polyvinyl chloride and other polymer materials, the binding force with printing ink is not

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
  • Inorganic powder highly filled polyvinyl alcohol composite material and preparation method thereof
  • Inorganic powder highly filled polyvinyl alcohol composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First mix 10 parts of polyvinyl alcohol with a particle size of 20 mesh, a degree of polymerization of 1700, and an alcoholysis degree of 88% and 25 parts of a plasticizer composed of water / glutamic acid / ethylene glycol with a mass ratio of 10 / 50 / 40 Add it into a high-speed mixer, and mix it for 120 minutes at a speed of 500r / min and a temperature of 40°C, so that the plasticizer is fully absorbed by the polyvinyl alcohol; then add 60 parts of expanded graphite with a particle size of 3000 mesh and 5 parts of polyethylene glycol In a high-speed mixer, mix at a speed of 1200r / min and a temperature of 40°C for 6 minutes, and then melt and extrude the mixed material through a single-screw extruder at 165°C to granulate.

[0028] The melt viscosity of the obtained composite material is 6×10 2 ~4.5×10 3 Pa·s, the tensile strength is 35.2MPa, and the elongation at break is 170.3%.

Embodiment 2

[0030] First, 20 parts of polyvinyl alcohol with a particle size of 200 mesh, a degree of polymerization of 2400, and a degree of alcoholysis of 99% and 30 parts of plasticizer composed of water and glucose with a mass ratio of 30 / 70 are added to the high-speed mixer. Mix at a speed of 600r / min and a temperature of 50°C for 60 minutes so that the plasticizer is fully absorbed by polyvinyl alcohol; then mix 80 parts of talcum powder with a particle size of 200 mesh and 10 parts of polyvinyl alcohol with a degree of polymerization of 500 and a degree of alcoholysis of 80%. Vinyl alcohol was added into a high-speed mixer, and mixed at a speed of 1000r / min and a temperature of 50°C for 10 minutes, and then the mixed material was melted and extruded by a twin-screw extruder at 155°C to prepare samples.

[0031] The melt viscosity of the obtained composite material is 2×10 3 ~5×10 3 Pa.s, the tensile strength is 75.0MPa, and the elongation at break is 70.0%.

Embodiment 3

[0033] First mix 60 parts of polyvinyl alcohol with a particle size of 800 mesh, a degree of polymerization of 1700, and a degree of alcoholysis of 99% and 10 parts of a plasticizer composed of glycerol / water / ethylene glycol with a mass ratio of 10 / 60 / 30 Add it into a high-speed mixer, and mix it for 30 minutes at a speed of 800r / min and a temperature of 60°C, so that the plasticizer is fully absorbed by the polyvinyl alcohol; Mix the obtained composite filler and 10 parts of polyvinyl alcohol with a degree of polymerization of 200 and a degree of alcoholysis of 99% into a high-speed mixer, mix at a speed of 800r / min and a temperature of 60°C for 2min, and then put the mixed material at 185°C The samples were prepared after melt extrusion and granulation by a parallel twin-screw extruder.

[0034] The melt viscosity of the obtained composite material is 1.5×10 2 ~2.5×10 3 Pa.s, the tensile strength is 72.5MPa, and the elongation at break is 90.5%.

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
Melt viscosityaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Melt viscosityaaaaaaaaaa
Login to view more

Abstract

The invention discloses an inorganic powder highly filled polyvinyl alcohol composite material, which consists of the following components in parts by weight: 10-60 parts of polyvinyl alcohol, 30-80 parts of inorganic powder, 5-30 parts of plasticizing agent and 5-15 parts of flow modifying agent. Further, the composite material has the tensile strength of 17.0-75.0 MPa and the breaking elongation of 70-450%, and the melt viscosity is 1.0*10<2> to 5.0*10<3> Pa s at 180 DEG C when the shearing rate is 10<2>-10<3> s<-1>. The invention further discloses a preparation method of the inorganic powder highly filled polyvinyl alcohol composite material. By using the inorganic powder highly filled polyvinyl alcohol composite material and the preparation method, not only can inorganic powder highly filled polyvinyl alcohol be realized, the cost of the composite material be greatly reduced, but also the flowability of the composite material can be guaranteed; the favorable thermoplastic processing of the composite material is realized; the obtained composite material is excellent in combination property; products such as a fiber, a sheet and a thin film can be prepared through a routine thermoplastic processing method; and the inorganic powder highly filled polyvinyl alcohol composite material is used for the fields of writing paper, printing paper, instrument and meter packaging films, wallpaper, heat-insulating gaskets, toys and the like. The preparation method provided by the invention is simple in process and short in flow and industrial production is easy to realize.

Description

technical field [0001] The invention belongs to the technical field of inorganic powder highly filled polymer composite material and its preparation, and in particular relates to an inorganic powder highly filled polyvinyl alcohol composite material and a preparation method thereof. Background technique [0002] Inorganic powder filled polymer composite material is prepared by mixing inorganic powder and polymer through certain processing technology, and then melt extrusion granulation process. Although the composite material contains a large amount of cheap inorganic powder, which can significantly reduce the material cost, it has been widely used in daily life, home decoration, industrial packaging and other fields, such as "wallpaper" used in home decoration, "wallpaper" in daily life, etc. shopping bags", "stuffed rope" used in cable manufacturing, etc., and can even be used as a substitute for writing pulp paper. Unfortunately, when the content of inorganic powder is h...

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): C08L29/04C08K13/02C08K3/34C08K3/26C08K3/22C08K3/36C08K3/04C08K3/30C08K3/24
Inventor 王琪李莉王滨陈宁白时兵华正坤
Owner SICHUAN UNIV
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