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Base tube prepared from modified polyimide film and its preparation method

A technology of polyimide film and modified material, which is applied in the equipment of electric recording process applying charge pattern, electric recording process applying electric charge pattern, application, etc. Short, poor fixing effect, etc., to achieve the effect of convenient preparation method, improved mechanical properties of materials, and long service cycle

Inactive Publication Date: 2008-03-19
庞力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the polyimide fixing film made of pure monomer materials can achieve a certain high temperature resistance and corresponding mechanical performance indicators, but on the fixing structural parts of the above-mentioned equipment, due to the special structure of the machine or the short service life, Or the fixing effect is not good
Another example: using the traditional process method, the thermal conductivity is improved by adding inorganic fillers, but the mechanical properties of the membrane material are greatly reduced, which also results in a short service life of the machine and is easily damaged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: 2180 grams (10 moles) of pyromellitic dianhydride (PMDA) and 2000 grams (10 moles) of 4,4'-diaminodiphenyl ether (ODA), and polar solvent 21945 grams of dimethyl Acetamide (DMAC) (16% solid content) is put into the reactor and stirred for 2-10 hours to polymerize into the main material—polyamic acid resin. Then, add 214 grams of nano-silica powder (accounting for 5% of the resin solid content) into the reaction kettle, and stir at room temperature for 2-10 hours to prepare the modified polyamic acid resin. The modified polyamic acid resin is coated on the aluminum pipe with a mirror surface by the dip coating method, and after casting for 10-20 minutes, it is sent to the drying equipment, and the initial temperature of the drying equipment is 30- 60°C, gradually increase the temperature to 220-250°C, keep the temperature constant for 2 hours, take it out and cool it, and obtain a base film with a thickness of 20-30 microns.

Embodiment 2

[0014] Embodiment 2: 2180 grams (10 moles) of pyromellitic dianhydride (PMDA), 2000 grams (10 moles) of 4,4'-diaminodiphenyl ether (ODA), and polar solvent 21945 grams of dimethyl Acetamide (DMAC) 16% solid content) is put into the reactor and stirred for 2-10 hours to polymerize into the main material—polyamic acid resin. Then add 292.6 grams of nano silicon dioxide (SiO 2 ) powder and 125.4 grams of nano-alumina (Al 2 o 3 ) powder (the sum of the weights of the two powders accounts for 10% of the solid weight of the resin). Made into modified polyamic acid resin. Dip coating with a stainless steel tube, cast for 20-30 minutes, and then send it to a drying device. The heating and drying conditions are the same as in Example 1 to obtain a base film with a thickness of 30-40 microns.

Embodiment 3

[0015] Embodiment 3: 2180 grams (10 moles) of pyromellitic dianhydride (PMDA), 2000 grams (10 moles) of 4,4'-diaminodiphenyl ether (ODA), and polar solvent 21945 grams of dimethyl Acetamide (DMAC) mole) 4,4'-diaminodiphenyl ether (ODA), and polar solvent 21945 grams of dimethylacetamide (DMAC) 16% solid content) are put into reaction kettle and stirred for 2-10 hours Polymerized into the main material - polyamic acid resin. Then add 209 grams of nano silicon dioxide (SiO 2 ) powder, 209 grams of nano titanium dioxide (TiO 2 ) powder and 209 grams of nano zirconia (ZrO 2 ) powder (the sum of the three powder weights accounts for 15% of the solid weight of the resin). Made into modified polyamic acid resin. Dip coating with polytetrafluoroethylene pipes, cast for 30-40 minutes, and send to drying equipment. The heating and drying conditions are the same as those in Example 1 to obtain a base film with a thickness of 40-50 microns.

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Abstract

A parent tube is made of a modified polyimide film; the raw material which is aggregated by mixing the main material acid polyamide resin the solid content of the raw material is 10-25 percent and the nano-modified polymer together, as well as stirring the mixture under normal temperature, is made into a parent tube, the thickness of the parent tube is arranged between 10 microns and 200 microns, while the length of the parent tube is arranged between 10mm and 1000 mm, and the diameter of the parent tube is arranged between 1mm and 100mm; the present invention has the advantages that as follows: 1, The present invention adopts polyimide modified by nanometer powder material, thereby meet the special requirements of fixing structures of office equipment and achieving high temperature-resistance, high mechanics property, good thermal conductivity and long life cycle; the preparation of the present invention is simple, and does not need huge equipment as well as big tooling and plant investment, and thereby reducing the cost and suitable for mass production.

Description

Technical field: [0001] The invention relates to a base pipe prepared by using a modified polyimide film as a raw material and a preparation method thereof. The base pipe has the characteristics of high temperature resistance, high mechanical properties, good thermal conductivity and long service life, and the preparation method is convenient , low cost, mass production. Background technique: [0002] At present, the thermal fixing technology in laser printers, digital copiers, and fax machines has been greatly improved compared with the previous product technology. The more obvious performance is that the main component that realizes the fixing function today - the fixing roller, all choose relatively thin film sleeves. Although relevant personnel and manufacturers at home and abroad have been involved in the development and production of this special product in recent years, it is still very rare to see a product that can be directly applied to the above-mentioned equipme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20B29C41/08B29C41/46B29K77/00B29L23/00
Inventor 庞力庞博昕
Owner 庞力
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