CN1923488A - Method for preparation of polytetrafluoroethylene suspending resin presintering material and said presintering material - Google Patents
Method for preparation of polytetrafluoroethylene suspending resin presintering material and said presintering material Download PDFInfo
- Publication number
- CN1923488A CN1923488A CN 200510044482 CN200510044482A CN1923488A CN 1923488 A CN1923488 A CN 1923488A CN 200510044482 CN200510044482 CN 200510044482 CN 200510044482 A CN200510044482 A CN 200510044482A CN 1923488 A CN1923488 A CN 1923488A
- Authority
- CN
- China
- Prior art keywords
- resin
- sintering
- presintering material
- presintering
- suspending resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a method for producing politef suspension resin sinter material. Wherein, compressing the common PTFE suspension resin in steel support, sintering in sinter furnace while the product is loose white block; breaking the block in rotational breaker, to obtain the particles at 100-1500mm average diameter; common politef (PTFE) suspension middle granularity resin is at 180+-80micrometer and the fine granularity resin is at 30+-20micrometer, while their sintered material has large density and better flow ability.
Description
Technical field
The present invention relates to a kind of polytetrafluoroethylsuspending suspending resin and give sintering feed.
Background technology
At present each polytetrafluoroethylene (PTFE) processing producer is when processing polytetrafluoroethylregenerated suspending resin goods, granularity resin or fine granularity resin in using mostly.They can be used to process all kinds of pressings, and its processing technology is a molding sintering, for example are used for machining large turning plate, bar, tubing, valve lining, various profile shapes etc.But because granularity resin and fine granularity resin flows performance are poor in the polytetrafluoroethylene (PTFE), be difficult to use automation machine-shaping, can only be by hand in the mould potting resin, and then pressurize, the demoulding, sintering, thereby inefficiency.And poor because of granularity resin among the PTFE and fine granularity resin flows performance, mold filling character is poor, when processing thin-walled goods and thin diameter tube bar and other narrow and small mold cavity of filling, is difficult to fill evenly, causes the machine-shaping products appearance irregular, not fine and close.The in suspension remaining a little auxiliary of adding when polymerisation is arranged and the low polymer of generation in granularity resin or the fine granularity resin can have a negative impact to the product properties of machine-shaping in addition.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of bulk density is big, the polytetrafluoroethylsuspending suspending resin presintering material and the manufacture method thereof of good fluidity, is convenient to realize automation machine-shaping goods.
The manufacture method of polytetrafluoroethylsuspending suspending resin presintering material of the present invention, it is characterized in that it being that common polytetrafluoroethylsuspending suspending resin particle pressurization is formed block material, 300～390 ℃ of following sintering 3～30 hours, obtaining polytetrafluoroethylsuspending suspending resin presintering material then through pulverizing.
Common polytetrafluoroethylene (PTFE) suspending resin is middle granularity resin (180 ± 80 microns of average grain diameters) or fine granularity resin (30 ± 20 microns of average grain diameters).Common PTFE suspending resin is installed in the stainless steel disc, be placed on again and give sintering in the sintering furnace, the material outward appearance that sinters is loose white blocks, this blocks is put into pulverizes in the swinging pulverizer, can obtain the granular material that average grain diameter is the 100-1500 micron.
Advantage of the present invention:
To have bulk density big for the sintering feed that gives that is processed into this method, the characteristics of good fluidity, be suitable for the automation fabricated product, be particularly suitable for automatic extruding pipe material or bar in plunger-type extruder, the products appearance excellence that processes, other performance indications and PTFE in suspension granularity resin compare and do not have what variation.PTFE gives sintering feed and is convenient in enormous quantities, goods such as continuous and automatic ground processing light-wall pipe, thin diameter rod.
Through sampling and testing, make PTFE with the processing of this method and give the sintering feed performance parameter and see Table 1.
Table 1:
| Test index | Average grain diameter | Hot strength | Elongation at break | Bulk density | Mobile |
| Test number | The 100-1500 micron | ≥21MPa | ≥240％ | ≥550g/L | ≥450g/Min |
| Testing standard | The laser particle size analyzer | HG/T2902-1997 | HG/T2902-1997 | HG/T2900 | ASTMD1895-69 |
The specific embodiment:
Below in conjunction with embodiment the present invention is described, but does not limit to following examples.
Embodiment one:
(1) with common PTFE in suspension granularity resin (180 ± 80 microns of average grain diameters) pack in the clean teel pallet, the loading of granularity resin is controlled between the 5-150Kg according to the size of dish among the PTFE.
(2) material pressurization during the clean stainless steel platen of usefulness will coil, pressure is controlled between 0.5～3MPa.
(3) teel pallet that installs is fixed on the tray rack, is placed on then and gives sintering in the sintering furnace.Sintering temperature is controlled at 325 ℃, sintering time 4 hours, and sintering after finishing is come out of the stove material, rests on temperature for cooling off in-20 ℃ to 30 ℃ the cooling chamber.
(4) will cool off good material and put into and pulverize in the swinging pulverizer, the graininess PTFE that obtains between the average particle size range 100-1500 micron gives sintering feed.
Embodiment two:
(1) common PTFE suspension fine granularity resin (30 ± 20 microns of average grain diameters) is packed in the clean teel pallet, the loading of PTFE fine granularity resin is controlled between the 5-150Kg according to the size of dish.
(2) material pressurization during the clean stainless steel platen of usefulness will coil, pressure is controlled between 8～10MPa.
(3) teel pallet that installs is fixed on the tray rack, is placed on then and gives sintering in the sintering furnace.Sintering temperature is controlled at 390 ℃, sintering time 25 hours, and sintering after finishing is come out of the stove material, and resting on temperature is-20
(4) ℃ to 30 ℃ cooling chamber, cool off.
(5) will cool off good material and put into and pulverize in the swinging pulverizer, the graininess PTFE that obtains between the average particle size range 100-1500 micron gives sintering feed.
Embodiment three:
According to the manufacture method of embodiment one, give sintering temperature and be controlled at 365 ℃, sintering time 3 hours.
Embodiment four:
According to the manufacture method of embodiment two, give sintering temperature and be controlled at 380 ℃, sintering time 10 hours.
Claims (6)
1, a kind of manufacture method of polytetrafluoroethylsuspending suspending resin presintering material, it is characterized in that it being that common polytetrafluoroethylsuspending suspending resin particle pressurization is formed block material, 300～390 ℃ of following sintering 3～30 hours, obtaining polytetrafluoroethylsuspending suspending resin presintering material then through pulverizing.
2, manufacture method according to claim 1 is characterized in that common polytetrafluoroethylsuspending suspending resin particle forms block material under 0.5～10MPa pressure.
3, manufacture method according to claim 1 is characterized in that described common polytetrafluoroethylsuspending suspending resin particle is that average grain diameter is the fine granularity resin that 180 ± 80 microns middle granularity resin or average grain diameter are 30 ± 20 microns.
4, manufacture method according to claim 1 is characterized in that the polytetrafluoroethylsuspending suspending resin presintering material that obtains is a graininess, and average grain diameter is 100～1500 microns.
5, the polytetrafluoroethylsuspending suspending resin presintering material that obtains of the described manufacture method of one of claim 1～3.
6, presintering material according to claim 5 is characterized in that being graininess, and average grain diameter is 100～1500 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044482 CN1923488A (en) | 2005-08-29 | 2005-08-29 | Method for preparation of polytetrafluoroethylene suspending resin presintering material and said presintering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044482 CN1923488A (en) | 2005-08-29 | 2005-08-29 | Method for preparation of polytetrafluoroethylene suspending resin presintering material and said presintering material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1923488A true CN1923488A (en) | 2007-03-07 |
Family
ID=37816400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044482 Pending CN1923488A (en) | 2005-08-29 | 2005-08-29 | Method for preparation of polytetrafluoroethylene suspending resin presintering material and said presintering material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1923488A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530537A (en) * | 2015-01-08 | 2015-04-22 | 大连塑料研究所有限公司 | Manufacturing method and forming device of high-viscosity resin boards |
-
2005
- 2005-08-29 CN CN 200510044482 patent/CN1923488A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104530537A (en) * | 2015-01-08 | 2015-04-22 | 大连塑料研究所有限公司 | Manufacturing method and forming device of high-viscosity resin boards |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Singh et al. | Additive manufacturing of 17–4 PH steel using metal injection molding feedstock: Analysis of 3D extrusion printing, debinding and sintering | |
| KR20230150889A (en) | Cemented carbide powders for additive manufacturing | |
| CN102060530B (en) | Preparation method of compact zirconia ceramic plunger | |
| KR101624373B1 (en) | Method for making cemented carbide products | |
| EP2367652A1 (en) | Method for producing cemented carbide or cermet products | |
| CN1923488A (en) | Method for preparation of polytetrafluoroethylene suspending resin presintering material and said presintering material | |
| CN106825543B (en) | A kind of hard alloy forming agent | |
| Luo et al. | Dimension precision of metal injection molded pure tungsten | |
| US7998381B2 (en) | Process for manufacturing a masterbatch for injection moulding or for extrusion | |
| Choi et al. | Design of trimodal Fe micro-nanopowder feedstock for micro powder injection molding | |
| Chen et al. | Investigations in the compaction and sintering of large ceramic parts | |
| CN105690786A (en) | Production method for large-diameter polytetrafluoroethylene turning plate | |
| CA2334384A1 (en) | Aqueous molding compositions for powders of stainless steel, intermetallic compounds and/or metal matrix composites | |
| EP1510273A1 (en) | Method of manufacturing hard material components | |
| CN105033244A (en) | Mixed feeding device of metallurgical powder | |
| CN1654192A (en) | Contour machining processes of polyethylene with super-high molecular weight | |
| KR101222476B1 (en) | A sinter | |
| CN110125384B (en) | Method for preparing metal powder for 3D printing by using non-target-size metal powder | |
| Djurić et al. | Particle size range as a factor influencing compressibility of ceramic powder | |
| GB2053281A (en) | Jet pulverised atomised steel powder for powder metallurgy | |
| CN113618978B (en) | Recyclable simple die and preparation method thereof | |
| CN114086015B (en) | Copper-tungsten alloy part and manufacturing method thereof | |
| CN110586925A (en) | Production mode of metal ceramic section bar | |
| CN115415526B (en) | Oversized tungsten tube and preparation method thereof | |
| Lunin et al. | Homogeneity of the porous structure of permeable powder-metallurgy materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |