CN103937133A - Individual black expanded polytetrafluoroethylene (e-PTFE) membrane used in electronics industry and preparation method thereof - Google Patents
Individual black expanded polytetrafluoroethylene (e-PTFE) membrane used in electronics industry and preparation method thereof Download PDFInfo
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- CN103937133A CN103937133A CN201410130626.4A CN201410130626A CN103937133A CN 103937133 A CN103937133 A CN 103937133A CN 201410130626 A CN201410130626 A CN 201410130626A CN 103937133 A CN103937133 A CN 103937133A
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Abstract
The invention relates to an individual black expanded polytetrafluoroethylene (e-PTFE) membrane used in the electronics industry and a preparation method thereof. The preparation method comprises the following steps of mixing, blank manufacturing, pushing, rolling, ungrease treatment, longitudinal drawing, sintering and curing. The individual black e-PTFE membrane prepared according to the invention is used in an electronic seal industry, the thickness of black polytetrafluoroethylene microporous membrane of the individual black e-PTFE membrane is 10-30 um, the width is 10-50 cm, and the porosity is about 50%. The individual black e-PTFE membrane disclosed by the invention is applied to the sealing of electronic devices, can achieve good sealing and quakeproof effects, and can achieve the effect of corrosion resistance, water heat dissipation prevention and radiation protection.
Description
Technical field:
The present invention relates to film field, relate in particular a kind of individual event black eptfe membrane for electron trade and preparation method thereof.
Background technology:
A kind of porous material that expanded polytetrafluoroethylsealing microporous membrane forms through techniques such as multi tension (being puffing), calendering, thermal treatments, it is a kind of pliable and tough and whippy poromerics, porosity Gao Shike has pervious function, even aperture distribution, there is sterilization, filtering function film, the surfacing of material, softness, but under scanning electron microscope, can see that the inside of material exists the micropore of a large amount of 0.4 μ m～1 μ m, and its porosity can account for 50%.This material has following characteristics: without harm, lightweight, corrosion-resistant, resistance to environmental change, overcome the cold flow properties (creep) of pure PTFE stuffing materials, this material seal is even, ageing-resistant, good springiness, can not harden along with the time or embrittlement, use temperature scope is from-240 DEG C～260 DEG C, and it is outstanding that it has advantages of that many traditional filtering membranes do not have, and its suitability is wide, be widely used in clothes, family, medicine, the fields such as agricultural and chemical industry.
Summary of the invention:
The object of the invention is for the deficiencies in the prior art part, a kind of individual event black eptfe membrane for electron trade is provided; Another object of the present invention is to provide the preparation method of individual event black eptfe membrane.
For achieving the above object, the present invention takes following technical proposals:
For a preparation method for the individual event black eptfe membrane of electron trade, comprise the steps: to comprise the following steps:
(1) batch mixing: black polytetrafluoroethyldispersion dispersion resin powder, hydro carbons extrusion aid and 3 ‰～5 ‰ staining agent three are fully mixed in proportion, leave standstill 24 hours at 50 DEG C～70 DEG C, form material;
(2) base: the cylindrical base that material is pressed in advance at 40 DEG C～50 DEG C to Φ 120mm;
(3) pushing: cylindrical base is placed on pushing machine, is forced into the round bar of Φ 20mm under 55 DEG C～60 DEG C conditions;
(4) calendering: circle bar is placed on rolling press, is rolled into oil-containing base band under 50 DEG C of conditions, thickness is 130um～250um, and width is 20～35cm;
(5) skimming treatment: by the degreasing at 260 DEG C～280 DEG C of oil-containing base band, remove extrusion aid, obtain degreasing base band;
(6) longitudinal stretching: degreasing base band is carried out to longitudinal stretching at 280 DEG C～300 DEG C, after draw ratio is 2～5 times, obtain longitudinal stretching Ranvier's membrane;
(7) sintering curing: longitudinal stretching Ranvier's membrane, 320 DEG C～380 DEG C sintering curings 50 seconds, is obtained to individual event black eptfe membrane, and the thickness of film is 100um～300um, and width is 10～50cm.
As preferably, the standard specific gravity of described black polytetrafluoroethyldispersion dispersion resin powder is 2.17.
As preferably, described staining agent is PTFE dispersible pigment dispersion.
The preparation-obtained individual event black of technique scheme eptfe membrane.
Beneficial effect of the present invention is:
The thickness of the film of black microporous teflon membran of the present invention is 10um～30um, and width is 10～50cm, and porosity is 50% left and right, for electronics sealing, can reach good sealing and shockproof, can protection against corrosion, and waterproof cooling, radioprotective.
Embodiment:
Embodiment 1, a kind of individual event black eptfe membrane for electron trade and preparation method thereof, its step is as follows:
(1) batch mixing: 3 ‰ PTFE dispersible pigment dispersion threes of Sichuan morning twilight 216S black polytetrafluoroethyldispersion dispersion resin powder (standard specific gravity is 2.17), hydro carbons extrusion aid and Kou Lan company of Switzerland are fully mixed in proportion, at 50 DEG C, leave standstill 24 hours, form material;
(2) base: the cylindrical base that material is pressed in advance at 40 DEG C to Φ 120mm;
(3) pushing: cylindrical base is placed on pushing machine, is forced into the round bar of Φ 20mm at 55 DEG C;
(4) calendering: circle bar is placed on rolling press, is rolled into oil-containing base band under 50 DEG C of conditions, thickness is 250um, and width is 25cm;
(5) skimming treatment: by the degreasing at 260 DEG C of oil-containing base band, remove extrusion aid, obtain degreasing base band;
(6) longitudinal stretching: degreasing base band is carried out to longitudinal stretching at 280 DEG C, after draw ratio is 3.5 times, obtain longitudinal stretching Ranvier's membrane;
(7) sintering curing: longitudinal stretching Ranvier's membrane, 360 DEG C of sintering curings 50 seconds, is obtained to individual event black eptfe membrane, and the thickness of film is 130um, and width is 13cm.
Embodiment 2, a kind of individual event black eptfe membrane for electron trade and preparation method thereof, its step is as follows:
(1) batch mixing: 3 ‰ PTFE dispersible pigment dispersion threes of Sichuan morning twilight 216S black polytetrafluoroethyldispersion dispersion resin powder (mark than be 2.17), hydro carbons extrusion aid and Kou Lan company of Switzerland are fully mixed in proportion, leave standstill 24 hours at 60 DEG C, formation material;
(2) base: the cylindrical base that material is pressed in advance at 50 DEG C to Φ 120mm;
(3) pushing: cylindrical base is placed on pushing machine, is forced into the round bar of Φ 20mm under 60 DEG C of conditions;
(4) calendering: circle bar is placed on rolling press, is rolled into oil-containing base band under 50 DEG C of conditions, thickness is 180um, and width is 30cm;
(5) skimming treatment: by the degreasing at 280 DEG C of oil-containing base band, remove extrusion aid, obtain degreasing base band;
(6) longitudinal stretching: degreasing base band is carried out to longitudinal stretching at 290 DEG C, after draw ratio is 2.5 times, obtain longitudinal stretching Ranvier's membrane;
(7) sintering curing: longitudinal stretching Ranvier's membrane, 350 DEG C of sintering curings 50 seconds, is obtained to individual event black eptfe membrane, and the thickness of film is 120um, and width is 15cm.
Above-described embodiment is the specific descriptions that the present invention is carried out; just the present invention is further described; can not be interpreted as limiting the scope of the present invention, those skilled in the art according to the content of foregoing invention make some nonessential improvement and adjust all fall into protection scope of the present invention within.
Claims (4)
1. for a preparation method for the individual event black eptfe membrane of electron trade, it is characterized in that: comprise the following steps:
(1) batch mixing: black polytetrafluoroethyldispersion dispersion resin powder, hydro carbons extrusion aid and 3 ‰～5 ‰ staining agent three are fully mixed in proportion, leave standstill 24 hours at 50 DEG C～70 DEG C, form material;
(2) base: the cylindrical base that material is pressed in advance at 40 DEG C～50 DEG C to Φ 120mm;
(3) pushing: cylindrical base is placed on pushing machine, is forced into the round bar of Φ 20mm under 55 DEG C～60 DEG C conditions;
(4) calendering: circle bar is placed on rolling press, is rolled into oil-containing base band under 50 DEG C of conditions, thickness is 130um～250um, and width is 20～35cm;
(5) skimming treatment: by the degreasing at 260 DEG C～280 DEG C of oil-containing base band, remove extrusion aid, obtain degreasing base band;
(6) longitudinal stretching: degreasing base band is carried out to longitudinal stretching at 280 DEG C～300 DEG C, after draw ratio is 2～5 times, obtain longitudinal stretching Ranvier's membrane;
(7) sintering curing: longitudinal stretching Ranvier's membrane, 320 DEG C～380 DEG C sintering curings 50 seconds, is obtained to individual event black eptfe membrane, and the thickness of film is 10um～30um, and width is 10cm～50cm.
2. the preparation method of a kind of individual event black eptfe membrane for electron trade according to claim 1, is characterized in that: the standard specific gravity of described black polytetrafluoroethyldispersion dispersion resin powder is 2.17.
3. the preparation method of a kind of individual event black eptfe membrane for electron trade according to claim 1, is characterized in that: described staining agent is PTFE dispersible pigment dispersion.
4. the preparation-obtained individual event black of the preparation method eptfe membrane of a kind of individual event black eptfe membrane for electron trade claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410130626.4A CN103937133A (en) | 2014-04-02 | 2014-04-02 | Individual black expanded polytetrafluoroethylene (e-PTFE) membrane used in electronics industry and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410130626.4A CN103937133A (en) | 2014-04-02 | 2014-04-02 | Individual black expanded polytetrafluoroethylene (e-PTFE) membrane used in electronics industry and preparation method thereof |
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| CN103937133A true CN103937133A (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410130626.4A Pending CN103937133A (en) | 2014-04-02 | 2014-04-02 | Individual black expanded polytetrafluoroethylene (e-PTFE) membrane used in electronics industry and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107163460A (en) * | 2017-07-19 | 2017-09-15 | 日氟荣高分子材料(上海)有限公司 | A kind of coloured fluorine resin film of high temperature resistant, preparation method and the usage |
| WO2018201264A1 (en) * | 2017-05-04 | 2018-11-08 | 李朝晖 | Reinforced membrane for separation in battery and preparation method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532810A (en) * | 1991-07-29 | 1993-02-09 | Nitto Denko Corp | Production of porous body |
| CN103386262A (en) * | 2013-07-18 | 2013-11-13 | 湖州森诺氟材料科技有限公司 | Polytetrafluoroethylene microporous membrane used for seawater desalination and preparation method thereof |
| CN103612397A (en) * | 2013-11-22 | 2014-03-05 | 湖州森诺氟材料科技有限公司 | Microporous polytetrafluoroethylene membrane for electronic communication sealing industry and preparation method for microporous polytetrafluoroethylene membrane |
-
2014
- 2014-04-02 CN CN201410130626.4A patent/CN103937133A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532810A (en) * | 1991-07-29 | 1993-02-09 | Nitto Denko Corp | Production of porous body |
| CN103386262A (en) * | 2013-07-18 | 2013-11-13 | 湖州森诺氟材料科技有限公司 | Polytetrafluoroethylene microporous membrane used for seawater desalination and preparation method thereof |
| CN103612397A (en) * | 2013-11-22 | 2014-03-05 | 湖州森诺氟材料科技有限公司 | Microporous polytetrafluoroethylene membrane for electronic communication sealing industry and preparation method for microporous polytetrafluoroethylene membrane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018201264A1 (en) * | 2017-05-04 | 2018-11-08 | 李朝晖 | Reinforced membrane for separation in battery and preparation method therefor |
| CN107163460A (en) * | 2017-07-19 | 2017-09-15 | 日氟荣高分子材料(上海)有限公司 | A kind of coloured fluorine resin film of high temperature resistant, preparation method and the usage |
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Application publication date: 20140723 |
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