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Preparation of rubber nano fibre

A technology of rubber nanofibers and rubber, which is applied in fiber processing, spinning solution preparation, fiber chemical characteristics, etc. It can solve the problems of high elastic rubber that is difficult to be continuous and stabilized, the fiber diameter is thick, and the shape stability is poor, so as to achieve continuous Good performance and stability, stable shape, and simple preparation method

Inactive Publication Date: 2009-08-05
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The rubber solution is added with inorganic salt electrolyte and nano-silica to improve the electrostatic spinnability of the rubber solution; at the same time, the space limitation of the outer polymer fiber during coaxial electrospinning is used to reduce the elastic recovery deformation of the rubber molecule and delay the fiber deformation; Before spinning, add an appropriate amount of cross-linking agent to the rubber solution, and quickly cross-link the fiber in situ during electrospinning, so that the rubber molecules can quickly form a three-dimensional cross-linked network structure, stabilize the morphology of the fiber, and solve the problem of high elasticity in electrospinning. The difficulty of continuous and stable rubber, thick fiber diameter, and poor shape stability, prepared cross-linked rubber nanofibers

Method used

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  • Preparation of rubber nano fibre

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1: Mix 1g (100 parts) of silicone rubber, 0.25g NaCl (25 parts) and 0.3g (30 parts) silane coupling agent-modified fumed silica in 10g of dichloromethane, stir evenly to prepare rubber solution to obtain a core layer solution, before electrospinning, add 0.005g (0.5 part) of a crosslinking agent to the core layer solution (in the crosslinking agent, organopolysiloxane A is a molecular chain with trimethylsilane at both ends Oxygen-terminated methylhydrogenpolysiloxane, platinum metal content in alcohol solution B of chloroplatinic acid is 10000ppm, and the mass ratio of A and B components is 1:1); 1.5g polyvinylpyrrolidone is dissolved in 10g ethanol , stir evenly to obtain the shell layer solution; coaxial electrospinning, set the distance between the spinneret and the receiving plate to be 15cm, the flow rate of the core layer solution is 1.0ml / h, the diameter of the spinneret is 0.5mm, the shell layer solution The flow rate was 2.0ml / h, the diameter of the sp...

Embodiment 2

[0021] Example 2: 1g (100 parts) butyl rubber, 0.05g AgNO 3(5 parts) and 0.05g (5 parts) of fumed silica modified with a silane coupling agent were mixed in 10 g of tetrahydrofuran, and stirred evenly to prepare a rubber solution to obtain a core layer solution. Before electrospinning, in the core layer solution Add 0.1g (10 parts) of cross-linking agent (organopolysiloxane A in the cross-linking agent is methyl hydridopolysiloxane whose molecular chain ends are capped by trimethylsiloxy, alcohol of chloroplatinic acid) The platinum metal content in solution B is 100 ppm, and the mass ratio of the two components A and B is 1:2); 1.2 g of polyethylene oxide is dissolved in 10 g of ethanol, and the shell solution is prepared by stirring uniformly; coaxial electrospinning, set The distance between the spinneret and the receiving plate is 20cm, the flow rate of the core layer solution is 0.8ml / h, the diameter of the spinneret is 0.6mm, the flow rate of the shell layer solution is ...

Embodiment 3

[0022] Example 3: 1g (100 parts) cis-butadiene rubber, 0.2g AgNO 3 (20 parts) and 0.1 g (10 parts) of silane coupling agent-modified precipitated silica were mixed in 8 g of tetrahydrofuran, stirred evenly to prepare a rubber solution to obtain a core layer solution, before electrospinning, in the core layer solution Add 0.03g (3 parts) of cross-linking agent (organopolysiloxane A in the cross-linking agent is dimethylsiloxane-methylhydrosiloxane whose molecular chain ends are capped by trimethylsilyloxy groups) Copolymer, the platinum metal content in the alcohol solution B of chloroplatinic acid is 3000ppm, and the mass ratio of the two components A and B is 1:3); 1.0g of polyvinyl alcohol is dissolved in 10g of ethanol, and the shell layer solution is obtained by stirring evenly ; Coaxial electrospinning, set the distance between the spinneret and the receiving plate to be 15cm, the flow rate of the core layer solution is 1.5ml / h, the diameter of the spinneret is 1.0mm, the...

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Abstract

The invention relates to a method of preparing rubber nanometer fibers. The method adopts a coaxial electrostatic spinning method which uses a rubber as a sandwich layer solution and a water-soluble polymer solution as a casing solution, exerts high-pressure static electricity and then carries out coaxial electrostatic spinning. The preparation method is simple, has good spinning continuity and stability and stable figures of the prepared rubber fibers and is widely applicable to the fields of biomedicine, antibacterium, sterilization, toughened plastics, and the like.

Description

Technical field: [0001] The invention relates to a preparation method of rubber nanofibers. The prepared rubber nanofibers can be used in the fields of biomedicine, antibacterial sterilization, toughened plastics and the like. Background technique: [0002] Electrospinning technology was first realized in 1934 by Formhals et al. Since the 1980s, especially in the last decade (around 1995), electrospinning has received renewed attention due to the development of nanotechnology. Using this technology, it is easy to process many polymers into different fiber structures, Microfibers of different scales (submicron to nanometer). [0003] Polymer nanofibers that have been successfully prepared by electrospinning technology include polyamide (PA6, PA66), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), polyethylene oxide (PEO), polylactic acid (PLA), acetic acid Cellulose (CA), Polyurethane (PU), Polycaprolactone (PCL) and many other polymer matrices. The Chinese patent "Prepa...

Claims

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Application Information

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IPC IPC(8): D01D1/02D01D5/00D01D5/34D01F1/10D01F8/10D01F11/06D01F11/08
Inventor 田明王磊张立群
Owner BEIJING UNIV OF CHEM TECH
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