Meltable reinforced polyvinyl alcohol (PVA) composite and preparation method thereof

A technology of polyvinyl alcohol and melt processing, which is applied in the field of polyvinyl alcohol compound preparation, can solve problems such as reinforcement and affecting preparation efficiency, and achieve the effects of increasing concentration, expanding application fields, and promoting uniform dispersion

Active Publication Date: 2013-12-11
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common problems of these methods are as follows: (1) In order to ensure the uniform dispersion of CNTs in PVA solution, the concentration of carbon nanotubes in the CNT-enhanced PVA solution system will be limited in practical applications; (2) The preparation of membrane materials, conventional wet fiber And electrostatic nanofibers, both need to remove the solvent, which affects the preparation efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a melt-processable reinforced polyvinyl alcohol compound includes the following steps:

[0025] (1) Add 0.5 part of Tween 20 to 100 parts of aqueous solution containing 30% glycerol, and then add 1 part of single-walled carbon nanotubes. The functional groups on the surface of the carbon nanotubes are hydroxyl (-OH), The mass percentage of CNT is 1.2%, the outer diameter is 2nm, and the length is 30μm. It is stirred and mixed for 4h under the assistance of ultrasound to obtain a plasticizer solution containing carbon nanotubes in the presence of a dispersion medium; through ultrasound and stirring, the The plasticizer solution is stable and uniformly dispersed.

[0026] (2) Mix the plasticizer solution described in step (1) with polyvinyl alcohol resin (PVA1799) at a mass ratio of 1:1, stir and mix intermittently at 20°C to obtain a melt processable Carbon nanotube reinforced polyvinyl alcohol composite.

[0027] The melt-processable reinforced polyvin...

Embodiment 2

[0029] A method for preparing a melt-processable reinforced polyvinyl alcohol compound includes the following steps:

[0030] (1) Add 4 parts of polyvinylpyrrolidone (K-30) to 100 parts of aqueous solution containing 15% trimethylolethane, and then add 0.05 parts of multi-walled carbon nanotubes. The functional groups on the surface of the carbon nanotubes are The mass ratio of the amino group to the CNT in the amino group is 0.45%, the outer diameter is 15 nm, and the length is 50 μm. The mixture is stirred and mixed for 3.5 hours under the assistance of ultrasound to obtain a plasticizer solution containing carbon nanotubes in the presence of a dispersion medium.

[0031] (2) Mix the plasticizer solution described in step (1) with the polyvinyl alcohol resin (PVA2088) at a mass ratio of 1.3:1, stir and mix at 50℃ intermittently to obtain a melt processable Carbon nanotube reinforced polyvinyl alcohol composite.

[0032] The melt-processable reinforced polyvinyl alcohol composite m...

Embodiment 3

[0034] A method for preparing a melt-processable reinforced polyvinyl alcohol compound includes the following steps:

[0035] (1) Add 2 parts of sodium dodecyl sulfate (SDS) to 100 parts of aqueous solution containing 50% trimethylolethane, and then add 0.5 part of double-walled carbon nanotubes, the functional groups on the surface of the carbon nanotubes It is a carboxyl group, the mass ratio of the carboxyl group to the CNT is 6.0%, the outer diameter is 4 nm, and the length is 50 μm. The plasticizer solution containing carbon nanotubes is obtained by stirring and mixing for 2.0 hours under the assistance of ultrasonic waves.

[0036] (2) Mix the plasticizer solution described in step (1) with polyvinyl alcohol resin (PVA2499) at a mass ratio of 0.75:1, and stir and mix at 35℃ intermittently to obtain a melt processable Carbon nanotube reinforced polyvinyl alcohol composite.

[0037] The melt-processable reinforced polyvinyl alcohol composite material prepared by the above prepar...

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Abstract

The invention discloses a preparation method of a meltable reinforced polyvinyl alcohol (PVA) composite, which comprises the following steps: (1) adding carbon nanotubes (CNT) into composite plasticizer containing a dispersion medium, stirring, and performing ultrasonic auxiliary dispersion for 1.5-4 hours to obtain a plasticizer solution; and (2) performing uniform incubation mixture on the plasticizer solution in the step (1) and a PVA resin to obtain the meltable CNT reinforced PVA composite. The invention also discloses the meltable reinforced PVA composite material prepared through the preparation method. According to the invention, the CNTs are dispersed in the plasticizer system for PVA; in the dispersion process, the viscosity of the disperse system can not be increased since no PVA is added; and on the premise of considering the economy, the amount of the CNTs can be increased as many as possible, thereby better realizing the reinforcement effect.

Description

Technical field [0001] The invention belongs to the field of preparation of polyvinyl alcohol compounds, in particular to a melt-processable reinforced polyvinyl alcohol compound and a preparation method thereof. Background technique [0002] Polyvinyl alcohol (PVA) is a kind of high molecular polymer with a wide range of uses, and its performance is between plastic and rubber. The appearance of polyvinyl alcohol resin series products is flocculent, granular and powdery; non-toxic, odorless, non-polluting, resistant to most organic solvents such as oils, lubricants and hydrocarbons; its aqueous solution has good adhesion And film-forming properties. Mainly used in PVA fiber, textile industry warp yarn slurry, fabric finishing agent, coating, adhesive raw material, and also used in the production of emulsifier, dispersant, film and other products. The application range covers textile, food, medicine, construction, wood processing, papermaking, printing, agriculture, steel, polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08K7/00C08K3/04C08K5/053C08K5/17C08K5/07C08K5/09C08J5/04
Inventor 刘加平阳知乾刘建忠徐德根周华新吕进崔巩李长风赵华磊
Owner JIANGSU SOBUTE NEW MATERIALS
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