CN105797589B - The preparation method of ptfe composite and ultra high modulus polyethylene filter membrane - Google Patents
The preparation method of ptfe composite and ultra high modulus polyethylene filter membrane Download PDFInfo
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- CN105797589B CN105797589B CN201510000107.0A CN201510000107A CN105797589B CN 105797589 B CN105797589 B CN 105797589B CN 201510000107 A CN201510000107 A CN 201510000107A CN 105797589 B CN105797589 B CN 105797589B
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Abstract
The invention discloses the preparation method of a kind of ptfe composite and ultra high modulus polyethylene filter membrane, comprise the following steps：（1）Material component A and component B are fed from two plunger pumps of plunger pump extruder respectively；（2）By the step（1）Middle component A and B component import microbedding co-extruder in the presence of plunger pump extruder；（3）The step（2）Obtained lamination material enters clothes hanger die head, and is extruded into melt films；（4）The melt films temperature be 70 90 degree, draft speed be in the presence of 30 ms/min of drafting systems it is gradually thinning, ptfe composite and ultra high modulus polyethylene filter membrane is made.Polytetrafluoroethylene (PTFE) and polyethylene of the present invention are spaced apart, equivalent to using polyethylene as skeleton, strengthen the ability of resistance to deformation, filter membrane pressure when in use and resistance to deformation can be born, the use for being more beneficial for filter membrane meets the social demand of industrialization filter membrane.
Description
Technical field
The invention belongs to nano non-woven fabric technical field of material, and in particular to a kind of ptfe composite and superelevation
The preparation method of modules polyethylene filter membrane.
Background technology
Microbedding coextrusion technology has had decades, but only local expanded application at present till now, more
It is to be in the laboratory research stage.
Microbedding co-extrusion technology refers to two or more polymer being formed by coextrusion tens layers or even thousands of layers
Alternate multiple composite, individual layer thickness can be as thin as micro/nano level.Microbedding coextrusion technology can make functional stuffing component poly-
In-situ fibrillation in compound matrix, so as to prepare the alternate multiple composite of high-performance and functionalization.
The excellent properties of different polymer can be got up to prepare work(by microbedding coextrusion technology by alternate multiple mixed binding
Energy composite, when the composite number of plies is enough, individual layer can be as thin as the one-dimensional nano structure suitable with Chain Dimensions, this
Unique microlayer structures are planted by composite functional diversities.For filled-in composite, nano-scale dimension Rotating fields go out
It can now make the distributions of filler particles by Simplified Three-dimensional be two dimension, study and improving interfacial property（Such as diffusion and bonding）Etc.
Can not be using complicated threedimensional model analysis.
Rainbow film is the more microbedding co-extrusion technology application examples of current application amount.Utilize two kinds of different heat of refraction coefficient
Plastic transparent resin（Refraction coefficient difference 0.03）, more than 30 layers are made through MULTILAYER COMPOSITE coextrusion, is uniformly put down on thickness direction
Capable alternating thickness is the 0.015-0.05mm film for having rainbow effect, and with the difference of viewing angle, color is different.It five
The color effect of variegation bright-coloured is according to optical refraction, interference, principle of reflection, has coloured silk when the zone of reflections is in the wave-length coverage of light
Rainbow phenomenon is produced, and the color that rainbow film is reflected is determined by the wavelength of reflected light.So it show it is motley
Gorgeous color.Preparing rainbow film can also be prepared using the method for light coral and the method for multicoating is carved, but both sides
Method manufacture is costly, and the area of manufacture is small, and speed of production is low, is only suitable for the use such as anti-counterfeiting mark, trade mark.And reflection multilayer
The compound rainbow film manufacturing expense of plastics is low, and production scale is big, and a unit can produce tens thousand of square metres in one day, is adapted to a wide range of
Application, such as decoration material, printing, packaging etc. use.Especially effect is fine in candy, fresh flower packaging, and has
There is sizable application prospect.
Before 2005, the technology of preparing of microbedding co-extrusion technology and rainbow film is substantially public by Mearl companies of the U.S., Angerer
Department and Taiwan He companies etc. hold, wherein there is the key point that 10 multinomial patents cover technology of preparing, the EDI in the nearest U.S. is public
Department, the Yang Weimin of Beijing Chemical Engineering College, the Guo Shaoyun of Sichuan University, blue sky, absolute sincerity company etc. successively release patent type technology solution
Determine puzzlement thin-film barrier, optical, pin hole fault, flaw fracture, stretch-resistance and the problem of electric property.Polytetrafluoroethyl-ne
Alkene film is too soft, is not easy to shape, and is easily deformed after stress, influences its use as filter membrane.
The content of the invention
The technical problems to be solved by the invention are to overcome polytetrafluoroethylene (PTFE) in the prior art and ultra high modulus
The technical barrier that polyethylene filter membrane can not be prepared, assembled, developed using microbedding coextrusion technology and the reasonable of stretching technique
The preparation method of ptfe composite and ultra high modulus polyethylene filter membrane, meet the social demand of industrialization filter membrane.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of preparation method of ptfe composite and ultra high modulus polyethylene filter membrane, comprises the following steps：（1）Will
Material component A and component B is fed from two plunger pumps of plunger pump extruder respectively, and the component A is white oil and polytetrafluoroethyl-ne
The weight ratio of the mixture of alkene, white oil and polytetrafluoroethylene (PTFE) is 95：5-50：50, the component B are white oil and the poly- second of ultra high modulus
The weight ratio of the mixture of alkene, white oil and ultra high modulus polyethylene is 95：5-50：50；（2）By the step（1）Middle component A and
B component imports microbedding co-extruder in the presence of plunger pump extruder, and more than 30 layers of lamination is extruded through microbedding co-extruder
Material；（3）The step（2）Obtained lamination material enters clothes hanger die head, and is extruded into the number of plies more than 30 layers, and thickness is 50-1000 μ
M melt films；（4）The melt films temperature be 70-90 degree, draft speed be in the presence of 30 ms/min of drafting systems by
Gradual change is thin, and ptfe composite and ultra high modulus polyethylene filter membrane is made；The filter membrane is according to different demand and mark
Standard, the filter membrane of special pore size distribution, such as ultrafiltration, nanofiltration, counter-infiltration various criterion are thinned in the presence of drafting system；（5）
By step（4）Polytetrafluoroethylene (PTFE) and ultra high modulus polyethylene filtering film coiled material is made in the obtained rolled mechanism of filter membrane.Spend, lead
Speed is stretched to be gradually thinning in the presence of 30 ms/min of drafting systems, obtained ptfe composite and ultra high modulus polyethylene
Filter membrane is to the filter membrane of special pore size distribution, such as the various criterion such as ultrafiltration, nanofiltration, counter-infiltration.
The step（1）In plunger pump extruder be duplex plunger pump extruder or three-throw ram pump extruder, preferably three posts
Fill in pump extruder.
The step（1）Middle material component A and component B are nano-powder or nanometer of master batch, prepare the work(of corresponding function
Can property ptfe composite and ultra high modulus polyethylene filter membrane.
The step（1）A/B ratio can adjust, and as needed, the thickness between layers of stacking is adjustable, can be with
It is uniform thickness or not uniform thickness.
To meet different production requirements, the step（1）Middle processing ptfe composite and ultra high modulus polyethylene
During filter membrane, corresponding component and proportioning are according to circumstances adjusted.
As the extension of the present invention, industry person skilled, can also by changing the mouth mold form of clothes hanger die head
Prepare hollow fiber type filter membrane.
Compared with prior art, beneficial effects of the present invention are：1. the preparation method of the present invention is simple to operate, condition temperature
With the cost of raw material is low；2. the polytetrafluoroethylene (PTFE) and ultra high modulus polyethylene mistake that are prepared using method of the present invention
Filter membrane, even structure can adjust, and mechanical performance is excellent, easy functionalization；3. preparation method operating process of the present invention is easy, using now
There is Weaving device to be directly realized by the filtering film preparation of polytetrafluoroethylene (PTFE) ultra high modulus polyethylene, it is corresponding through rational design and matching
Ripe accessory, polytetrafluoroethylene (PTFE) and ultra high modulus polyethylene filter membrane can be largely obtained, be easy to the industrial applications of next step；④
Utilize construct polytetrafluoroethylene (PTFE) and the raw material sources of ultra high modulus polyethylene filter membrane are extensive, cost is low, can be largely continuous
Production；5. polytetrafluoroethylene (PTFE) of the present invention and polyethylene are spaced apart, equivalent to using polyethylene as skeleton, strengthen resistance to deformation
Ability, filter membrane pressure when in use and resistance to deformation can be born, be more beneficial for the use of filter membrane, the present invention is using micro-
Rationally assembling for layer coextrusion technology and stretching technique, develops ptfe composite and ultra high modulus polyethylene filter membrane
Preparation method, meet the social demand of industrialization filter membrane.
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Embodiment
To be best understood from the present invention, the present invention is described in further detail with reference to specific embodiment.
Embodiment 1
As shown in figure 1, the preparation method of the present embodiment ptfe composite and ultra high modulus polyethylene filter membrane, including
Following steps：（1）By material component A：The mixture and component B of white oil and polytetrafluoroethylene (PTFE)：White oil and ultra high modulus polyethylene
Mixture fed respectively from two plunger pumps of three-throw ram pump extruder, the weight of white oil and polytetrafluoroethylene (PTFE) ratio in component A
For 95：The weight of white oil and ultra high modulus polyethylene ratio is 95 in 5, component B：5；（2）By the step（1）Middle component A and B groups
Part imports microbedding co-extruder in the presence of three-throw ram pump extruder, and 50 layers of lamination material is extruded through microbedding co-extruder；（3）
Step（2）Obtained lamination material enters clothes hanger die head and is extruded into the melt films that the number of plies is 50 layers, thickness is 50 μm；（4）It is described
Melt films temperature be 70 degree, draft speed be in the presence of 30 ms/min of drafting systems it is gradually thinning, compound polytetrafluoro is made
Ethene and ultra high modulus polyethylene filter membrane, the rolling mechanism winding of filter membrane is become into ptfe composite and ultra high modulus
Polyethylene filters film roll.
Embodiment 2
As shown in figure 1, the preparation method of the present embodiment ptfe composite and ultra high modulus polyethylene filter membrane, including
Following steps：（1）By material component A：The mixture and component B of white oil and polytetrafluoroethylene (PTFE)：White oil and ultra high modulus polyethylene
Mixture fed respectively from two plunger pumps of three-throw ram pump extruder, the weight of white oil and polytetrafluoroethylene (PTFE) ratio in component A
For 85：The weight of white oil and ultra high modulus polyethylene ratio is 90 in 15, component B：10；（2）By the step（1）Middle component A and B
Component imports microbedding co-extruder in the presence of three-throw ram pump extruder, and 200 layers of lamination material is extruded through microbedding co-extruder；
（3）Step（2）Obtained lamination material enters clothes hanger die head and is extruded into the melt films that the number of plies is 200 layers, thickness is 500 μm；（4）
The melt films temperature be 80 degree, draft speed be gradually to be thinned to special pore size distribution in the presence of 30 ms/min of drafting systems
Ultra filtration filter membrane, ptfe composite and ultra high modulus polyethylene filter membrane is made, the rolling mechanism of filter membrane is wound
Become ptfe composite and ultra high modulus polyethylene filtering film roll.
Embodiment 3
As shown in figure 1, the preparation method of the present embodiment ptfe composite and ultra high modulus polyethylene filter membrane, including
Following steps：（1）By material component A：The mixture and component B of white oil and polytetrafluoroethylene (PTFE)：White oil and ultra high modulus polyethylene
Mixture fed respectively from two plunger pumps of duplex plunger pump extruder, the weight of white oil and polytetrafluoroethylene (PTFE) ratio in component A
For 90：The weight of white oil and ultra high modulus polyethylene ratio is 80 in 10, component B：10；（2）By the step（1）Middle component A and B
Component imports microbedding co-extruder in the presence of duplex plunger pump extruder, and 300 layers of lamination material is extruded through microbedding co-extruder；
（3）Step（2）Obtained lamination material enters clothes hanger die head and is extruded into the melt films that the number of plies is 300 layers, thickness is 1000 μm；
（4）The melt films temperature be 90 degree, draft speed be gradually to be thinned to particular bore in the presence of 30 ms/min of drafting systems
The ultra filtration filter membrane in footpath, ptfe composite and ultra high modulus polyethylene filter membrane is made, the rolling mechanism of filter membrane is received
Volume becomes ptfe composite and ultra high modulus polyethylene filtering film roll.
Embodiment 4
As shown in figure 1, the preparation method of the present embodiment ptfe composite and ultra high modulus polyethylene filter membrane, including
Following steps：（1）By material component A：The mixture and component B of white oil and polytetrafluoroethylene (PTFE)：White oil and ultra high modulus polyethylene
Mixture fed respectively from two plunger pumps of duplex plunger pump extruder, the weight of white oil and polytetrafluoroethylene (PTFE) ratio in component A
For 85：The weight of white oil and ultra high modulus polyethylene ratio is 90 in 10, component B：5；（2）By the step（1）Middle component A and B
Component imports microbedding co-extruder in the presence of duplex plunger pump extruder, and 256 layers of lamination material is extruded through microbedding co-extruder；
（3）Step（2）Obtained lamination material enters clothes hanger die head and is extruded into the melt films that the number of plies is 256 layers, thickness is 1000 μm；
（4）The melt films temperature be 90 degree, draft speed be gradually to be thinned to particular bore in the presence of 30 ms/min of drafting systems
The ultra filtration filter membrane in footpath, ptfe composite and ultra high modulus polyethylene filter membrane is made, the rolling mechanism of filter membrane is received
Volume becomes ptfe composite and ultra high modulus polyethylene filtering film roll.
Embodiment 5
As shown in figure 1, the preparation method of the present embodiment ptfe composite and ultra high modulus polyethylene filter membrane, including
Following steps：（1）By material component A：The mixture and component B of white oil and polytetrafluoroethylene (PTFE)：White oil and ultra high modulus polyethylene
Mixture fed respectively from two plunger pumps of duplex plunger pump extruder, the weight of white oil and polytetrafluoroethylene (PTFE) ratio in component A
For 20：The weight of white oil and ultra high modulus polyethylene ratio is 20 in 10, component B：10；（2）By the step（1）Middle component A and B
Component imports microbedding co-extruder in the presence of duplex plunger pump extruder, and 220 layers of lamination material is extruded through microbedding co-extruder；
（3）Step（2）Obtained lamination material enters clothes hanger die head and is extruded into the melt films that the number of plies is 220 layers, thickness is 550 μm；（4）
The melt films temperature be 85 degree, draft speed be gradually to be thinned to special pore size distribution in the presence of 30 ms/min of drafting systems
Ultra filtration filter membrane, ptfe composite and ultra high modulus polyethylene filter membrane is made, the rolling mechanism of filter membrane is wound
Become ptfe composite and ultra high modulus polyethylene filtering film roll.
Embodiment 6
As shown in figure 1, the preparation method of the present embodiment ptfe composite and ultra high modulus polyethylene filter membrane, including
Following steps：（1）By material component A：The mixture and component B of white oil and polytetrafluoroethylene (PTFE)：White oil and ultra high modulus polyethylene
Mixture fed respectively from two plunger pumps of duplex plunger pump extruder, the weight of white oil and polytetrafluoroethylene (PTFE) ratio in component A
For 50：The weight of white oil and ultra high modulus polyethylene ratio is 20 in 50, component B：10；（2）By the step（1）Middle component A and B
Component imports microbedding co-extruder in the presence of duplex plunger pump extruder, and 150 layers of lamination material is extruded through microbedding co-extruder；
（3）Step（2）Obtained lamination material enters clothes hanger die head and is extruded into the melt films that the number of plies is 150 layers, thickness is 600 μm；（4）
The melt films temperature be 80 degree, draft speed be gradually to be thinned to special pore size distribution in the presence of 30 ms/min of drafting systems
Ultra filtration filter membrane, ptfe composite and ultra high modulus polyethylene filter membrane is made, the rolling mechanism of filter membrane is wound
Become ptfe composite and ultra high modulus polyethylene filtering film roll.
Preferably, material component A and component B is nano-filled master batch in the present embodiment.
Claims (3)
1. the preparation method of a kind of ptfe composite and ultra high modulus polyethylene filter membrane, it is characterised in that including following step
Suddenly：（1）Material component A and component B are fed from two plunger pumps of plunger pump extruder respectively, the component A be white oil with
The weight ratio of the mixture of polytetrafluoroethylene (PTFE), white oil and polytetrafluoroethylene (PTFE) is 95：5-50：50, the component B are white oil and superelevation
The weight ratio of the mixture of modules polyethylene, white oil and ultra high modulus polyethylene is 95：5-50：50；（2）By the step（1）
Middle component A and B component import microbedding co-extruder in the presence of plunger pump extruder, through microbedding co-extruder extrude 30 layers with
On lamination material；（3）The step（2）Obtained lamination material enters clothes hanger die head, and is extruded into the number of plies more than 30 layers, and thickness is
50-1000 μm of melt films；（4）The melt films temperature be 70-90 degree, draft speed be 30 ms/min of drafting systems
Effect is lower gradually thinning, and ptfe composite and ultra high modulus polyethylene filter membrane is made.
2. the preparation method of ptfe composite according to claim 1 and ultra high modulus polyethylene filter membrane, it is special
Sign is：The step（1）In plunger pump extruder be duplex plunger pump extruder or three-throw ram pump extruder.
3. the preparation method of ptfe composite according to claim 1 and ultra high modulus polyethylene filter membrane, it is special
Sign is：The step（1）Middle material component A and component B are nano-filled master batch.
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| CN106540551B (en) * | 2016-10-06 | 2019-08-23 | 浙江大学 | High hydrophobicity polyethylene flat plate porous film and preparation method thereof |
| CN108686520A (en) * | 2018-06-12 | 2018-10-23 | 漳州龙文琪睿生物科技有限公司 | A kind of preparation method of hemodialysis membrane raw material |
| CN115404566A (en) * | 2022-09-02 | 2022-11-29 | 江苏文明人造草坪有限公司 | Production process of high-performance mesh |
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|---|---|---|---|---|
| WO2009089133A2 (en) * | 2008-01-08 | 2009-07-16 | 3M Innovative Properties Company | Nanoparticle dispersion, compositions containing the same, and articles made therefrom |
| CN102064301A (en) * | 2010-12-25 | 2011-05-18 | 佛山塑料集团股份有限公司 | Method for manufacturing porous multilayer composite diaphragm for lithium battery and diaphragm |
| CN103831976A (en) * | 2014-02-23 | 2014-06-04 | 青岛中科昊泰新材料科技有限公司 | Method for preparing strong-strength composite plastic film |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089133A2 (en) * | 2008-01-08 | 2009-07-16 | 3M Innovative Properties Company | Nanoparticle dispersion, compositions containing the same, and articles made therefrom |
| CN102064301A (en) * | 2010-12-25 | 2011-05-18 | 佛山塑料集团股份有限公司 | Method for manufacturing porous multilayer composite diaphragm for lithium battery and diaphragm |
| CN103831976A (en) * | 2014-02-23 | 2014-06-04 | 青岛中科昊泰新材料科技有限公司 | Method for preparing strong-strength composite plastic film |
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