CN206692589U - A kind of sintering equipment for preparing opening porous polymer material - Google Patents
A kind of sintering equipment for preparing opening porous polymer material Download PDFInfo
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- CN206692589U CN206692589U CN201720316803.7U CN201720316803U CN206692589U CN 206692589 U CN206692589 U CN 206692589U CN 201720316803 U CN201720316803 U CN 201720316803U CN 206692589 U CN206692589 U CN 206692589U
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- China
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- punching block
- block core
- air inlet
- ventilative
- exhaust
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Abstract
The utility model discloses a kind of sintering equipment for preparing opening porous polymer material；It includes thermal sintering mould, and the sintering mold includes：Air inlet end cap, lower ventilative punching block core, agglomerating chamber's body, upper ventilative punching block core, exhaust end cover；Ventilative punching block core is fixed on the lower end of agglomerating chamber's body by air inlet end cap down, and upper ventilative punching block core is fixed on the upper end of agglomerating chamber's body by exhaust end cover；Cavity between the lower ventilative punching block core and upper ventilative punching block core is material agglomerating chamber；Cavity between air inlet end cap and lower ventilative punching block core is inlet plenum, and the cavity between exhaust end cover and upper ventilative punching block core is exhaust chamber；The present apparatus is from beginning completed high temperature inert gas to sintering and all flowed in powder gap, to material homogeneous heating so that the opening of product is good, loose structure is uniform.The present apparatus can be fitted into the amount i.e. packing factor, air inlet chamber pressure and selective polymer powder material of material in agglomerating chamber to adjust product loose structure form by regulation.
Description
Technical field
It the utility model is related to and belong to porous polymer technical field of material formation, more particularly to one kind prepares opening
The sintering equipment of porous polymer material.
Background technology
Opening porous polymer material is because of its internal three-dimensional network pore structure with connection, in industrial production and life
Detachable collar domain is widely used in being separated by filtration, permeates and absorption process.The preparation of opening porous polymer material has many kinds, such as
Melting extrusion pulling method, thermally induced phase separation, fretting map method and powder sintering etc..Gather for some performances are very excellent
Compound, such as exceed molecular weight polyethylene, polytetrafluoroethylene (PTFE), because its melt-processable is excessively poor, it is difficult to using melting extrusion
Pulling method prepares porous material, and Thermal inactive hair needs to use organic solvent or can not find suitable solvent, organic solvent
Recovery is more complicated, and the porous material percent opening that fretting map method obtains is very low.Therefore, for more than molecular weight polyethylene, polytetrafluoro
Ethene etc., its opening porous material are mainly prepared using powder sintering at present.
Conventional art majority is that heat is conducted into polymer powders simply by heating mould, by mould, due to
Polymer bond's property is poor, space between powder be present, and heat, which is transmitted to, to be sintered material center and need longer time, is sintered into
The type cycle is longer, less efficient；Meanwhile be sintered on material diverse location and the larger temperature difference be present, the performance for influenceing product is equal
One property；In addition, remaining in the oxygen in space between powder, in high-temperature sintering process, oxidative degradation or friendship can be produced to material
Connection acts on.
The content of the invention
The shortcomings that the purpose of this utility model is to overcome above-mentioned prior art and deficiency, there is provided a kind of rate of heat addition is fast,
The sintering equipment for the preparation opening porous polymer material that sintering velocity is fast, production efficiency is high.
The utility model is achieved through the following technical solutions：
A kind of sintering equipment for preparing opening porous polymer material, it includes sintering mold, and the sintering mold is under
Include successively on and：Air inlet end cap 8, lower ventilative punching block core 2, agglomerating chamber's body 9, upper ventilative punching block core 4, exhaust end cover 10；
The lower ventilative punching block core 2 is fixed on the lower end of agglomerating chamber's body 9, the upper ventilative punching block by air inlet end cap 8
Core 4 is fixed on the upper end of agglomerating chamber's body 9 by exhaust end cover 10；Between the lower ventilative punching block core 2 and upper ventilative punching block core 4
Cavity be material agglomerating chamber 3；Cavity between the air inlet end cap 8 and lower ventilative punching block core 2 is inlet plenum 1, the exhaust
Cavity between end cap 10 and upper ventilative punching block core 4 is exhaust chamber 5；
Vacuum exhaust unit 7 is installed on the exhaust end cover 10, inert gas heating is installed on the air inlet end cap 8
Air admission unit 6.
The lower ventilative punching block core 2, upper ventilative punching block core 4 be 5~15 μm of average void size, porosity 15%~
30% ventilative steel.
The upper and lower side of the inwall of agglomerating chamber's body 9, offer boss structure, lower ventilative punching block core 2 and lower ventilative steel
The outer rim of core rod 2 is overlapped on the boss structure.
The inert gas heats air admission unit 6 by bottled high-pressure inert gas source 11, pressure-reducing valve 12, the and of electric heater 13
Stainless steel pipes 14 form.
The vacuum exhaust unit 7 is made up of vavuum pump 15, vacuum degree control valve 16 and stainless-steel vacuum pipeline 17.
The air inlet end cap 8 and exhaust end cover 10 are fixedly connected by bolt with agglomerating chamber body 9；In the He of air inlet end cap 8
Junction between exhaust end cover 10 and agglomerating chamber's body 9 has additional seal washer, airtight in material agglomerating chamber 3 to improve
Property.
A kind of sintering method for preparing opening porous polymer material, it comprises the following steps：
After polymer powders are loaded into material agglomerating chamber 3, merga pass bolt locking inlet end lid 8 and exhaust end cover are closed
10；
Begin to warm up sintering mold and be heated to 160~220 DEG C, while inert gas heats air admission unit 6 by indifferent gas
Body is heated to 160~220 DEG C, and is passed through in sintering mold, the 0.2~0.6MPa of pressure of inlet plenum 1, and inert gas is through lower ventilative
Punching block core 2 enters material agglomerating chamber 3, and from space between polymer powders by, polymer powders are heated and sintered,
Reach 0.04~0.08MPa's of absolute pressure through upper ventilative punching block core 4 by the inert gas in space between polymer powders
Exhaust chamber 5, sintering mold is discharged by vacuum exhaust unit 7, after sintering 10~20min, opened after cooling down sintering mold to normal temperature
Sintering mold, obtain opening porous polymer material.
The polymer powders are ultra high molecular polyethylene powder, and its form is spherical or ellipsoid, the μ of average grain diameter 25
M~150 μm.
The utility model is had the following advantages and effect relative to prior art：
(1) the utility model is directly heated and sintered to polymer powders using high temperature inert gas, to material
The rate of heat addition is fast, and sintering velocity is fast, and production efficiency is high, the preparation particularly suitable for thick member opening porous polymer material；
(2) the utility model is directly heated and sintered to polymer powders using high temperature inert gas, inert gas
Can be clean by the oxygen blow in powder gap when starting to be passed through, and inert atmosphere guarantor has been carried out to material in sintering process
Shield, avoid oxidative degradation or crosslinked action when material is in high temperature for a long time；
(3) sintering completion high temperature inert gas is from beginning arrived in preparation method of the present utility model all to flow in powder gap
In, to material homogeneous heating so that the opening of product is good, loose structure is uniform.
(4) preparation method of the present utility model can be fitted into amount i.e. packing factor, the air inlet of material in agglomerating chamber by regulation
Chamber pressure and selective polymer powder material adjust product loose structure form.
Brief description of the drawings
Fig. 1 is the sintering equipment structural representation that the utility model prepares opening porous polymer material.
Fig. 2 is Fig. 1 inert gases heating air admission unit structural representation.
Fig. 3 is Fig. 1 vacuum exhaust cellular construction schematic diagrams.
Fig. 4 is change curve of the percent opening with air inlet chamber pressure.
Fig. 5 is change curve such as figure of the porosity with packing factor.
Embodiment
The utility model is more specifically described in detail with reference to specific embodiment.
Embodiment 1
25 μm of ultrahigh molecular weight polyethylene powder of average grain diameter is loaded into material agglomerating chamber, ultra-high molecular weight polyethylene powder
Material loads quality=(material agglomerating chamber volume) × (ultrahigh molecular weight polyethylene powder apparent density) × (packing factor 1.05),
Simultaneously locking die is closed, sintering mold is begun to warm up and is heated to 160 DEG C, while inert gas heats air admission unit by indifferent gas
Body is heated to 160 DEG C and the hot gas is passed through in sintering mold, set pressure feed chamber pressure be respectively 0.2MPa,
0.4MPa and 0.6MPa, heat-agglomerating is carried out to powder, is kept exhaust chamber absolute pressure 0.08MPa by vacuum exhaust unit, is burnt
After tying 15min, cooling mould to normal temperature opens mould, obtains the porous superhigh molecular weight polyethylene material of opening.
The percent opening of the porous superhigh molecular weight polyethylene material of opening made from the present embodiment with air inlet chamber pressure change
It is as shown in Figure 4 to change curve.It can be seen that when charging chamber pressure is 0.2MPa, the percent opening of porous material is 99.3%；
When charging chamber pressure is 0.4MPa, the percent opening of porous material is 98.3%；When charging chamber pressure is 0.6MPa, porous material
Percent opening is 96.6%.The porosity of gained porous material is all in the μ of 34% or so, hole average-size about 30 under the conditions of these three
m.As can be seen here, in certain feed space pressure limit, with charging chamber pressure increase, percent opening reduces by a small margin, and hole
Rate and hole average-size are held essentially constant.
Embodiment 2
45 μm of ultrahigh molecular weight polyethylene powder of average grain diameter is loaded into material agglomerating chamber, ultra-high molecular weight polyethylene powder
Material loads quality=(material agglomerating chamber volume) × (ultrahigh molecular weight polyethylene powder apparent density) × (packing factor), filling
Coefficient chooses 1.0,1.05 and 1.1 respectively, closes simultaneously locking die, begins to warm up sintering mold and be heated to 200 DEG C, while lazy
Property gas heating air admission unit inert gas is heated to 200 DEG C and the hot gas is passed through in sintering mold, air inlet chamber pressure
0.4MPa is remained, powder is heated and sintered, exhaust chamber absolute pressure 0.06MPa is kept by vacuum exhaust unit, burnt
After tying 15min, cooling mould to normal temperature opens mould, obtains the porous superhigh molecular weight polyethylene material of opening.
The porosity of the porous superhigh molecular weight polyethylene material of opening made from the present embodiment with packing factor change
Curve is as shown in Figure 5.It can be seen that when packing factor is 1.0, the porosity of porous material is 35.6%；Filling system
When number is 1.05, the porosity of porous material is 33.9%；When packing factor is 1.1, the porosity of porous material is 32.8%；
The percent opening of gained porous material is all in about 55 μm of 98.1% or so, hole average-size under the conditions of these three.As can be seen here, exist
In the range of certain packing factor, packing factor is higher, and porosity is higher, and percent opening and hole average-size are kept not substantially
Become.
Embodiment 3
The μ of average grain diameter 150 ultrahigh molecular weight polyethylene powder is loaded into material agglomerating chamber, ultra-high molecular weight polyethylene ball
Shape powder loads quality=(material agglomerating chamber volume) × (the spherical powder apparent density of ultra-high molecular weight polyethylene) × (filling system
Number 1.0), simultaneously locking die is closed, sintering mold is begun to warm up and is heated to 220 DEG C, while inert gas heating air admission unit
Inert gas is heated to 200 DEG C and the hot gas is passed through in sintering mold, air inlet chamber pressure remains 0.6MPa, to powder
Material is heated and sintered, and exhaust chamber absolute pressure 0.04MPa is kept by vacuum exhaust unit, after sintering 20min, cools down mould
Mould is opened to normal temperature, obtains the porous superhigh molecular weight polyethylene material of opening.
The porosity of gained porous material is 31.9%, percent opening 94.2%, about 90 μm of hole average-size.
As described above, it can preferably realize the utility model.
Embodiment of the present utility model is simultaneously not restricted to the described embodiments, and other are any without departing from of the present utility model
Spirit Essence with made under principle change, modification, replacement, combine, simplification, should be equivalent substitute mode, be included in
Within the scope of protection of the utility model.
Claims (6)
- A kind of 1. sintering equipment for preparing opening porous polymer material, it is characterised in that：Include air inlet successively from bottom to top End cap (8), lower ventilative punching block core (2), agglomerating chamber's body (9), upper ventilative punching block core (4), exhaust end cover (10)；The lower ventilative punching block core (2) is fixed on the lower end of agglomerating chamber's body (9), the upper ventilative steel by air inlet end cap (8) Core rod (4) is fixed on the upper end of agglomerating chamber's body (9) by exhaust end cover (10)；The lower ventilative punching block core (2) is breathed freely with upper Cavity between punching block core (4) is material agglomerating chamber (3)；Cavity between the air inlet end cap (8) and lower ventilative punching block core (2) For inlet plenum (1), the cavity between the exhaust end cover (10) and upper ventilative punching block core (4) is exhaust chamber (5)；Vacuum exhaust unit (7) is installed, being provided with inert gas on the air inlet end cap (8) adds on the exhaust end cover (10) Hot air admission unit (6).
- 2. the sintering equipment of opening porous polymer material is prepared according to claim 1, it is characterised in that：It is described lower Gas punching block core (2), upper ventilative punching block core (4) are the ventilative steel of 5~15 μm of average void size, porosity 15%~30%.
- 3. the sintering equipment of opening porous polymer material is prepared according to claim 2, it is characterised in that：The sintering The upper and lower side of room body (9) inwall, offer the outer rim of boss structure, lower ventilative punching block core (2) and lower ventilative punching block core (2) It is overlapped on the boss structure.
- 4. the sintering equipment of opening porous polymer material is prepared according to claim 3, it is characterised in that：The inertia Gas heating air admission unit (6) is by bottled high-pressure inert gas source (11), pressure-reducing valve (12), electric heater (13) and stainless steel tube Road (14) forms.
- 5. the sintering equipment of opening porous polymer material is prepared according to claim 3, it is characterised in that：The vacuum Exhaust unit (7) is made up of vavuum pump (15), vacuum degree control valve (16) and stainless-steel vacuum pipeline (17).
- 6. preparing the sintering equipment of opening porous polymer material according to any one of claim 1 to 5, its feature exists In：The air inlet end cap (8) and exhaust end cover (10) are fixedly connected by bolt with agglomerating chamber's body (9)；In air inlet end cap (8) Junction between exhaust end cover (10) and agglomerating chamber's body (9) has additional seal washer, to improve in material agglomerating chamber (3) Air-tightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720316803.7U CN206692589U (en) | 2017-03-29 | 2017-03-29 | A kind of sintering equipment for preparing opening porous polymer material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720316803.7U CN206692589U (en) | 2017-03-29 | 2017-03-29 | A kind of sintering equipment for preparing opening porous polymer material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206692589U true CN206692589U (en) | 2017-12-01 |
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ID=60440993
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720316803.7U Expired - Fee Related CN206692589U (en) | 2017-03-29 | 2017-03-29 | A kind of sintering equipment for preparing opening porous polymer material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867016A (en) * | 2017-03-29 | 2017-06-20 | 华南理工大学 | A kind of sintering method and device for preparing opening porous polymer material |
| CN110435166A (en) * | 2019-08-28 | 2019-11-12 | 华南理工大学 | A kind of porous material dynamic rotary sinter molding method and its molding machine |
-
2017
- 2017-03-29 CN CN201720316803.7U patent/CN206692589U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867016A (en) * | 2017-03-29 | 2017-06-20 | 华南理工大学 | A kind of sintering method and device for preparing opening porous polymer material |
| CN106867016B (en) * | 2017-03-29 | 2023-02-14 | 华南理工大学 | Sintering method and device for preparing porous polymer material |
| CN110435166A (en) * | 2019-08-28 | 2019-11-12 | 华南理工大学 | A kind of porous material dynamic rotary sinter molding method and its molding machine |
| CN110435166B (en) * | 2019-08-28 | 2021-09-21 | 华南理工大学 | Dynamic rotary sintering forming method and forming device for porous material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 |