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Novel process for forming polynorbornene

A technology of polynorbornene and norbornene, applied in filament/thread forming, single-component synthetic polymer rayon, fiber chemical characteristics, etc., can solve the problem of not seeing polynorbornene, not fully exploring ethylene Excellent performance of polynorbornene based polynorbornene, difficulty in processing polynorbornene, etc., to achieve good optical properties

Inactive Publication Date: 2004-04-28
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the processing and molding of polynorbornene is very difficult, the above applications are only doped polynorbornene powder, and many excellent properties of vinyl polynorbornene have not been fully explored. So far, no polynorbornene has been used in fiber reports, especially on nanofibers

Method used

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  • Novel process for forming polynorbornene
  • Novel process for forming polynorbornene
  • Novel process for forming polynorbornene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1 A polynorbornene o-dichlorobenzene solution with a mass percentage of 4% polynorbornene (molecular weight: 540,000) was prepared. Heated in a water bath at 80°C for 4 hours to dissolve completely. The needle tube containing the PNB solution of o-dichlorobenzene was used as the positive electrode, the circular metal plate was used as the negative electrode, and the distance between the electric fields was 6 cm. A voltage is applied, and the droplet hanging off the end of the needle becomes conical. When the voltage reaches a certain value, the electric field force acting on the surface of the cone overcomes the surface tension, forming a jet stream from the cone. During the spinning process, the solvent was volatilized, and basically dry fibers were obtained on the receiving screen of the negative electrode, and dried in vacuum at 60°C for 4 hours. The voltage was adjusted, and the received fiber diameter was measured to be 0.6 μm when the voltage was 7 Kv. ...

Embodiment 2

[0054] Example 2 Adjust the voltage and the distance between positive and negative electrodes in Example 1, increase the voltage to 9kv, and change the distance between the needle tip and the receiving screen to 7cm. Fibers were obtained on the receiving screen of the negative electrode, and dried in vacuum at 60° C. for 4 hours. The as-received fiber diameter was measured to be 0.4 μm.

Embodiment 3

[0055] Example 3 Prepare a polynorbornene-o-dichlorobenzene solution with a concentration of 4.5% as in Example 1. The voltage is 12 kv, and the distance between the needle tip and the receiving screen is 5 cm. Receive the fiber on the receiving screen of the negative electrode, and dry it under vacuum at 60°C for 4h. The as-received fiber diameter was measured to be 0.3 μm.

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Abstract

The novel process of forming polynorbornene is electrostatic spinning process includes spraying polynorbornene and electrostatic stretching. The polynorbornene is prepared through vinyl radical polymerization. The produced polynorbornene can reach the thermal performance indexes for electronic packing material, has excellent optical performance, and may be used in optical fiber and high performance optical lens.

Description

technical field [0001] The present invention relates to a new molding method of polynorbornene, in particular to a new molding method of ethylene type polymerized polynorbornene. Background technique [0002] Norbornene was originally only produced by the French ORKEN / NORSOLAR company (formerly cdf chemie company), and it was industrialized in 1975. After that, the East German veb leuna-werke "Walter Ulbrient" company and the Russian Tobolck petrochemical complex and the Baku Azerbaijan petrochemical process The Institute has also conducted many studies. Norbornene uses different catalysts, and different polymers can be obtained under different polymerization conditions, including metathesis polymerization, cationic / anionic polymerization, and ethylenic polymerization. The vinyl polymerization of norbornene was first reported by Sartori et al. Vinyl polymerization of norbornene produces a special polymer that retains the bicyclic structure of the monomer and has no double b...

Claims

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Application Information

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IPC IPC(8): C08F132/08D01D5/00D01F6/02
Inventor 刘太奇于建香孙文华
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY