CN103966891B - The preparation method of a kind of fiber pulp and the fiber pulp of preparation thereof - Google Patents
The preparation method of a kind of fiber pulp and the fiber pulp of preparation thereof Download PDFInfo
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Abstract
The present invention provides the preparation method of a kind of fiber pulp, including two kinds of fibers that three of the above chemical composition is identical, draw ratio is different, mixes with arbitrary proportion, pulls an oar in beating equipment.Described fiber selected from chopped strand, can wire-dividing broom purification natural fiber or can the staple fibre of wire-dividing broom purification；It preferably is selected from chopped strand；More preferably there is the chopped strand of filtration structures.The present invention also provides for the fiber pulp that described preparation method prepares.The present invention is by the fiber mixing making beating of different draw ratios, and the fiber that draw ratio is bigger can increase friction in making beating early stage so that fiber still can occur fibrillation under soft External Force Acting in advance, thus improve making beating efficiency, reduce beating energy consumption；The smaller fiber of major diameter can avoid the interfibrous entanglement that draw ratio is big, makes in pulp fiber evenly.
Description
Technical field
The invention belongs to field of papermaking, be specifically related to the preparation method of a kind of fiber pulp and the fiber pulp of preparation thereof.
Background technology
In paper industry, before sheet formation, physical method all must be utilized to process paper pulp fiber so that fibre morphology and knot
Structure changes, as made it deform, conquassation, brooming sub-wire etc. so that size performance adapts to production requirement and the paper of paper machine
Prospective quality requirement.This operating process making fiber be subject to the effects such as friction, shearing and conquassation is referred to as making beating.Papermaking at present
The fibrous raw material huge number used in industry, for some fibrous raw material with filtration structures, in pulping process
Also along with the generation of fibrillation process, fibrous body forms the process of more tiny fibril the most under external force, specifically
Show fibrocortex peeling, short texture, axial split, the change such as dissociate.Making beating is the physics side realizing fiber fibrillation
Method, concrete operations for it being carried out mechanical beating and grinding by various beating equipments again after disperse in water by chopped strand,
Make fiber surface produce a large amount of fento shape filoplumes and form the pulp of height fibrillation.
The pulping way of fibrillating fibre is the most constantly modified in evolution, and these improvement are concentrated mainly on pre-place
Reason, shredding technique, fibrillation equipment are improved and mix the aspects such as making beating mode.Such as the U.S. patent Nos (patent No.
US4472241, publication date JIUYUE in 1984 18 days) the profile of tooth feature about mill that just the refer to impact on effects on slurry making.China
Application for a patent for invention (publication number CN101381898A, publication date on March 11st, 2009) discloses by regulation pretreating agent, pre-
Treatment conditions and refining process improve the method for making beating efficiency.Mixing making beating technology can energy efficient to a certain extent,
But the mixing making beating mentioned in document at present is conceived to the mixing between different fibrous raw material mostly, such as patent No. US5094913
U.S. patent Nos (publication date on March 10th, 1992) in disclose use meta-aramid and p-aramid fiber mixing making beating or
It is aramid fiber and the mixing making beating of other synthetic fibers.Fibrous raw material for single kind is pulled an oar, still without the most convenient but also save
The optimization method of energy.It addition, above-mentioned corrective measure the most not solve fiber present in the preparation process of fibrillation dissolving pulp long
Degree is distributed uncontrollable, fibre length and beating degree the problem such as can not take into account simultaneously.
Summary of the invention
For the problems referred to above, it is an object of the present invention to provide the preparation method of a kind of fiber pulp, the most former
The preparation method of fibrillated fibers pulp.The method can improve making beating efficiency with the deformation of accelerating fibers, thus reduce making beating energy
Consumption.The method can also control fibre length and distribution of lengths flexibly, meets the performance requirement of different paper.
In order to realize foregoing invention purpose, present invention employs following technical scheme:
The preparation method of a kind of fiber pulp, including more than the two kinds fibers that chemical composition is identical, draw ratio is different, to appoint
Meaning ratio mixes, and pulls an oar in beating equipment.
Preparation method of the present invention, the fiber that preferably more than three kinds chemical composition is identical, draw ratio is different with arbitrarily than
Example mixes, and pulls an oar in beating equipment.
Preparation method of the present invention, the fiber that more preferably three kinds chemical composition is identical, draw ratio is different with arbitrarily than
Example mixes, and pulls an oar in beating equipment.
Preferably, the aspect ratio distribution scope of described fiber is 1000～3000, and selected from 500～1000 and 100～
At least one in 500.
It is furthermore preferred that the aspect ratio distribution scope of described fiber is 1300～2300, and selected from 600～800 and 300～
At least one in 500.
Preferably, on the basis of total oven dry weight of described fiber, the percentage by weight of the fiber of three kinds of draw ratios is respectively
For:
The fiber 10～30% of draw ratio 1000～3000,
The fiber 40～70% of draw ratio 500～1000,
The fiber 20～30% of draw ratio 100～500.
It is furthermore preferred that on the basis of total oven dry weight of described fiber, the weight percent score of the fiber of three kinds of draw ratios
It is not:
The fiber 10～25% of draw ratio 1300～2300,
The fiber 50～65% of draw ratio 600～800,
The fiber 20～25% of draw ratio 300～500.
Preferably, fiber of the present invention selected from chopped strand, can wire-dividing broom purification natural fiber or can sub-wire broom
The staple fibre changed；
It is furthermore preferred that described fiber is selected from chopped strand.
Preferably, chopped strand of the present invention is the chopped strand with filtration structures；More preferably autohemagglutination is to benzene two
Formyl p-phenylenediamine fiber, polyparaphenylene's benzodiazole fiber or tencel fiber.
Preparation method of the present invention, described beating equipment preferably is selected from trough-style pulp beater, disc mill, PFI mill
Plant or multiple；
It is further preferred that employing trough-style pulp beater, slurry solids concentration expressed in percentage by weight 0.5～5%, hang cutter load 1
～pull an oar under conditions of 10kg, beating time 2～24h；Or
Use disc mill, slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times
Pull an oar under conditions of 50～200；Or
Use PFI mill, slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution
Pull an oar under conditions of 1000～10000.
Preparation method of the present invention, also includes using pretreating agent that mixed chopped strand is carried out pretreatment.
Preferably, described pretreating agent is selected from sulphuric acid, nitric acid, hydrochloric acid, sodium hydroxide, chlorosulfonic acid, fluosulfonic acid, polyphosphoric acids
With one or more in potassium permanganate.
Another object of the present invention is to provide a kind of fiber pulp, raw fibre is identical by more than two kinds chemical compositions,
The fiber that draw ratio is different is constituted with arbitrary proportion mixing, is prepared by above-mentioned preparation method.
It is also an object of the present invention to provide a kind of fibrillating fibre pulp, beating degree is 25～90 ° of SR, water retention value
130～450%, weight average length 0.5～1.5mm；Pulled an oar in beating equipment by raw fibre and obtain；Wherein raw fibre is by three
Plant the chopped strand with filtration structures that above chemical composition is identical, draw ratio is different to be constituted with arbitrary proportion mixing.
Preferably, there is the chopped strand of filtration structures selected from Fanglun 1414, poly-right described in
Penylene benzodiazole fiber or tencel fiber.
Preferably, one or more in trough-style pulp beater, disc mill, PFI mill of described beating equipment；
It is furthermore preferred that employing trough-style pulp beater, slurry solids concentration expressed in percentage by weight 0.5～5%, hang cutter load 1～
Pull an oar under conditions of 10kg, beating time 2～24h；Or
Use disc mill, slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times
Pull an oar under conditions of 50～200；Or
Use PFI mill, slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution
Pull an oar under conditions of 1000～10000.
Preferably, described fibrillating fibre pulp, raw fibre by three kinds of draw ratios different described in have fibrillation knot
The chopped strand of structure is constituted；Wherein three kinds of aspect ratio distribution scopes are 1000～3000,500～1000,100～500.
It is furthermore preferred that described fibrillating fibre pulp, raw fibre by three kinds of draw ratios different described in there is fibrillation
The chopped strand of structure is constituted；Wherein three kinds of aspect ratio distribution scopes are 1300～2300,600～800,300～500
Preferably, described fibrillating fibre pulp, with total oven dry weight of the described chopped strand with filtration structures
On the basis of, the percentage by weight of the chopped strand of three kinds of draw ratios is respectively as follows:
The chopped strand 10～30% of draw ratio 1000～3000,
The chopped strand 40～70% of draw ratio 500～1000,
The chopped strand 20～30% of draw ratio 100～500.
It is furthermore preferred that described fibrillating fibre pulp, with total over dry weight of the described chopped strand with filtration structures
On the basis of amount, the percentage by weight of the chopped strand of three kinds of draw ratios is respectively as follows:
The fiber 10～25% of draw ratio 1300～2300,
The fiber 50～65% of draw ratio 600～800,
The fiber 20～25% of draw ratio 300～500.
Fiber pulp is abundant fibrillating or fibrillation while usually requiring that holding greater depth, thus has bigger
Specific surface area.The preparation method of fiber pulp of the present invention, solving the fiber as how unification forms is raw material, high
Effect, energy-conservation the problem preparing fiber pulp.Preparation method of the present invention, it is adaptable to chopped strand, can wire-dividing broom purification
Natural fiber or can the staple fibre of wire-dividing broom purification, be particularly suited for chopped strand, be more particularly suited for that there is fibrillation knot
The chopped strand of structure.
If it is relatively big only with a kind of draw ratio numerical value, such as the chopped strand of 1000～3000, then in pulping process, fibre
Dimension is easily tangled under external force and interaction, forms slurry group, and then affects pulp quality.If only with a kind of major diameter
Less than numerical value, such as the chopped strand of 100～500, then pulp entirety fibre length is little, it is impossible to meet the mechanical property of follow-up page
Energy.The present invention is by the chopped strand mixing making beating of different draw ratios, and the fiber that draw ratio is bigger can rub in making beating early stage increase
Wipe so that fiber still can occur fibrillation under soft External Force Acting in advance, thus improve making beating efficiency, reduce making beating
Energy consumption；The smaller fiber of major diameter can avoid the interfibrous entanglement that draw ratio is big, makes in pulp fiber evenly.
Additionally, being also advantageous in that of preparation method of the present invention can be come by the ratio adjusting various aspect fibers
Control the fiber length distribution in obtained pulp flexibly.
By following experiment, the preparation method of optimization fiber pulp of the present invention.
Experiment 1The fibrillation process of different aspect fibers
Test method: diameter is 10 μm, length different (1mm, 3mm, 5mm, 7mm, 10mm, 12mm) is gathered benzene two
Formyl p-phenylenediamine fiber mill is pulled an oar under identical beating process (starching dense 10%, grinding clearance 0.1mm), and test is not
Change with microscopic pattern (SEM) and the beating degree of every kind of fiber under defibrination number of times.
Experimental result: be shown in Table 1.
Table 1 experimental example 1 result
As can be seen from the above table, when the length of fiber 1～3mm (draw ratio 100～300), fiber fibrillation
Progress is the most slow, and when the length of fiber 10～12mm (draw ratio 1000～1200), although its initial beating-up period fibril
Change process be faster than length 5～7mm the fiber of (draw ratio 500～700), but in the making beating later stage, its fibrillation process slows down.
Observe scanning electron microscope it is found that length 10～12mm fiber part in pulping process of (draw ratio 1000～1200)
Tangle, and the fiber of length 12mm occurs the fiber more than a length of 10mm that tangles.
Therefore, the fiber that draw ratio is different, the performance in pulping process is different.The fiber that draw ratio numerical value is less, former
Fibrillation is made slow progress；The fiber that draw ratio numerical value is bigger, slow after fibrillation process is the fastest, and the entanglement of fiber occurs.
Experiment 2The impact on fibrillation of the weight proportion of different aspect fibers
Test method: diameter is 10 μm, the PPTA of length different (1mm, 5mm, 10mm)
Fiber is pulled an oar under identical beating process (starching dense 10%, grinding clearance 0.1mm) by different quality ratio mill, and test is not
Change with the beating degree of proportioning fiber each under defibrination number of times.
Experimental result: be shown in Table 2.
Table 2 experimental example 2 result
As can be seen from the above table, when the fiber of draw ratio 1000 (fibre length 10mm) does not adds fashionable, early stage fiber of pulling an oar
The progress of fibrillation is the slowest.Along with the addition of the fiber of draw ratio 1000, fiber fibrillation process dramatically speeds up.But draw ratio
When the addition of 1000 fibers is more than 30%, scanning electron microscope fiber be can be observed and occur the phenomenon tangled to aggravate in a large number.
Therefore, the existence of fiber that draw ratio numerical value is bigger (draw ratio > 1000), fiber fibrillation process is had significantly
Impact, it is in fiber pulp preparation method of the present invention, one of necessary fibrous raw material.But described draw ratio numerical value is relatively
The percentage by weight of big fiber should be less than 30%, and otherwise fiber can tangle in pulping process.
Even if it addition, all contain the fiber that draw ratio numerical value is bigger, the formula of three kinds of aspect fibers, fiber fibrillation enters
Journey and last original fiber degree are all better than the formula of two kinds of aspect fibers.
Accompanying drawing explanation
Hereinafter, describe embodiment of the present invention in detail in conjunction with accompanying drawing, wherein:
The initial beating-up period that Fig. 1 being shown that embodiment 1 and the electromicroscopic photograph of fiber in latter stage, wherein 1a is shown that the 0.5h that pulls an oar
Time fiber electromicroscopic photograph, 1b be shown that pull an oar 4.5h time fiber electromicroscopic photograph.
Detailed description of the invention
Referring to specific embodiment, the present invention is described.Only it will be appreciated by those skilled in the art that these embodiments
For the present invention is described, it limits the scope of the present invention never in any form.
Experimental technique in following embodiment, if no special instructions, is conventional method.Medicine used in following embodiment
Material raw material, reagent material etc., if no special instructions, be commercially available purchase product.
Embodiment 1A kind of fibrillation Fanglun 1414's pulp
Raw fibre is consisted of, specifically by the PPTA chopped strand (domestic) of three kinds of draw ratios
For:
(1) fiber A: long 9mm, diameter 6 μm, draw ratio 1500, percentage by weight 25%；
(2) fiber B: long 8mm, diameter 10 μm, draw ratio 800, percentage by weight 50%；
(3) fiber C: long 6mm, diameter 12 μm, draw ratio 500, percentage by weight 25%.
It is prepared via a method which:
(1) mass dryness fraction of every kind of chopped strand raw material is tested；
(2) fiber A, B and C are weighed according to percentage by weight, mixing, total oven dry weight 100g；
(3) chopped strand of mixing is mixed with 10kg water；
(4) using trough-style pulp beater to pull an oar, beating process is: solid weight percentage concentration 0.99%, hangs cutter and bears
Lotus 5kg, beating time 5h, obtain target product.
Fibrillation PPTA pulp obtained by the present embodiment has a following performance: beating degree 32 °
SR, water retention value 170.9%, weight average length 0.98mm.
During making beating 0.5h and making beating 5h, take the pulp form at 500 times of electric Microscopic observation fibers respectively.The Electronic Speculum of fiber is shone
Sheet is shown in Fig. 1 a and 1b.Fig. 1 a shows, PPTA chopped strand only has a small amount of sub-wire on surface, and fiber is overall
Remain in that straight rod-like morphology.Fig. 1 b shows, after the fiber mixing making beating of different draw ratios, fiber is membranaceous or fine bar
Shape.Illustrate that chopped strand fibrillation is complete.
Embodiment 2A kind of fibrillation tencel fiber pulp
Raw fibre is consisted of by the tencel chopped strand (domestic) of three kinds of draw ratios, particularly as follows:
(1) fiber A: long 8mm, diameter 6 μm, draw ratio 1333, percentage by weight 20%；
(2) fiber B: long 6mm, diameter 8 μm, draw ratio 750, percentage by weight 60%；
(3) fiber C: long 6mm, diameter 13 μm, draw ratio 462, percentage by weight 20%.
It is prepared via a method which:
(1) mass dryness fraction of every kind of chopped strand raw material is tested；
(2) fiber A, B and C are weighed according to weight proportion, mixing, total oven dry weight 1kg；
(3) chopped strand of mixing is mixed with 4kg water；
(4) using disc mill to pull an oar, beating process is: solid weight percentage concentration 20%, grinding clearance
0.1mm, defibrination number of times 80 times, obtain target product.
The fibrillation tencel fiber pulp that the present embodiment prepares has a following performance: beating degree 46 ° of SR, water retention values
230.6%, weight average length 0.77mm
Embodiment 3A kind of fibrillation polyparaphenylene's benzodiazole fiber (PBO) pulp
Raw fibre is consisted of by the PBO chopped strand (domestic) of three kinds of draw ratios, particularly as follows:
(1) fiber A: long 12mm, diameter 6 μm, draw ratio 2000, percentage by weight 10%；
(2) fiber B: long 6mm, diameter 10 μm, draw ratio 600, percentage by weight 65%；
(3) fiber C: long 4mm, diameter 12 μm, draw ratio 333, percentage by weight 20%.
It is prepared via a method which:
(1) mass dryness fraction of every kind of chopped strand raw material is tested；
(2) fiber A, B and C are weighed according to weight proportion, mixing, total oven dry weight 0.2kg；
(3) chopped strand of mixing is mixed with 3.8kg water；
(4) using PFI mill to pull an oar, beating process is: solid weight percentage concentration 5%, grinding clearance 0.5mm,
Defibrination 10000 turns, obtains target product.
The fibrillation PBO pulp that the present embodiment prepares has a following performance: 37 ° of SR of beating degree, water retention value 212.5%, weight
All length 0.89mm
Embodiment 4A kind of cotton fiber pulp
Raw fibre is consisted of by the cotton fiber (domestic) of three kinds of draw ratio scopes, particularly as follows:
(1) fiber A: long 45 ± 2mm, diameter 12 ± 1 μm, draw ratio 3300～4000, percentage by weight 25%；
(2) fiber B: long 33 ± 2mm, diameter 12 ± 1 μm, draw ratio 2400～3200, percentage by weight 55%；
(3) fiber C: long 23 ± 2mm, diameter 12 ± 1 μm, draw ratio 1600～2300, percentage by weight 20%.
It is prepared via a method which:
(1) mass dryness fraction of every kind of chopped strand raw material is tested；
(2) fiber A, B and C are weighed according to weight proportion, mixing, total oven dry weight 1kg；
(3) chopped strand of mixing is mixed with 9kg water；
(4) using disc mill to pull an oar, beating process is: solid weight percentage concentration 10%, grinding clearance
0.1mm, defibrination number of times 50 times, obtain target product.
The cotton fiber pulp that the present embodiment prepares has following performance: 36 ° of SR of beating degree, water retention value 110.5%, weight average are long
Degree 1.18mm.
Comparative example 1The Fiber Aspect Ratio composition shadow to fibrillation Fanglun 1414's pulp performance
Ring
Raw fibre (Fanglun 1414 (domestic)) forms:
Scheme 1:(1) fiber A:, long 9mm, diameter 6 μm, draw ratio 1500, percentage by weight 23%；
(2) fiber B: long 8mm, diameter 10 μm, draw ratio 800, percentage by weight 54%；
(3) fiber C: long 6mm, diameter 12 μm, draw ratio 500, percentage by weight 23%.
Scheme 2: fiber A, long 9mm, diameter 6 μm, draw ratio 1500, percentage by weight 100%；
Scheme 3: fiber B, long 8mm, diameter 10 μm, draw ratio 800, percentage by weight 100%；
Scheme 4: fiber C, long 6mm, diameter 12 μm, draw ratio 500, percentage by weight 100%.
Above-mentioned four kinds of schemes all use following preparation flow:
(1) mass dryness fraction of various chopped strand is measured；
(2) various fiber is weighed according to percentage by weight, mix (if desired for), total oven dry weight is 100g；
(3) raw material chopped strand is mixed with 10kg water；
(4) using trough-style pulp beater to pull an oar, beating process is: solid weight percentage concentration 0.99%, hangs cutter and bears
Lotus 5kg, beating time 5h, obtain target product.
The performance of the fibrillation dissolving pulp that four kinds of schemes prepare is shown in Table 3.
The fibrillation dissolving pulp performance of 3 four kinds of schemes of table
| Scheme number | Beating degree/° SR | Water retention value/% | Weight average length/mm | Kink index/1/m |
| 1 | 32 | 170.9 | 0.98 | 586.8 |
| 2 | 29 | 161.3 | 0.87 | 758.9 |
| 3 | 30 | 155.5 | 0.67 | 613.2 |
| 4 | 26 | 150.2 | 0.53 | 557.4 |
As can be seen from Table 3:
(1) beating degree of the fibrillation dissolving pulp that scheme 1 obtains, water retention value, weight average length are above other three kinds of schemes, turn round
Knot index is less than scheme 2 and 3.The pulp performance that explanation scheme 1 obtains is better than the pulp of other scheme.
(2) although the average length of scheme 2 raw material is more than scheme 1, but due to a large amount of long fibres in pulping process mutually
Tangling, the weight average length of obtained pulp is slightly less than scheme 1, and the kink index of pulp that scheme 2 obtains is far above scheme
1, it is unfavorable for the overlap joint between fiber after fibre matting, and during paper sheet formation, easily forms slurry group, affect page homogeneous
Property and mechanical property.
(3) water retention value of the pulp that scheme 3 obtains differs bigger with scheme 1, it is seen that it is interfibrous that scheme 1 compares scheme 3
Friction is relatively big, beneficially the formation of fibril and the increase of pulp specific surface area.
(4) weight average length of the pulp that scheme 4 obtains is much smaller than scheme 1, is unfavorable for the mechanical property of page.
Conclusion:
The fiber compositing formula of the mixing draw ratio that scheme 1 embodies, hence it is evident that be better than the fiber prescription of single draw ratio, its institute
The pulp prepared can preferably meet the requirement of follow-up paper technology, is conducive to improving paper performance.
Specific description of embodiments of the present invention above is not limiting as the present invention, and those skilled in the art can be according to this
Various change or deformation are made in invention, without departing from the spirit of the present invention, all should belong to the model of claims of the present invention
Enclose.
Claims (12)
1. a preparation method for fiber pulp, including three kinds of fiber mixing that chemical composition is identical, draw ratio is different, in making beating
Equipment is pulled an oar；On the basis of total oven dry weight of described fiber, the percentage by weight of the fiber of three kinds of draw ratios is respectively
For:
The fiber 10～25% of draw ratio 1300～2300,
The fiber 50～65% of draw ratio 600～800,
The fiber 20～25% of draw ratio 300～500.
Preparation method the most according to claim 1, it is characterised in that described fiber selected from chopped strand, can sub-wire broom
The natural fiber changed or can the staple fibre of wire-dividing broom purification.
Preparation method the most according to claim 2, it is characterised in that described fiber is selected from chopped strand.
Preparation method the most according to claim 3, it is characterised in that described chopped strand is have filtration structures short
Cut fiber.
Preparation method the most according to claim 4, it is characterised in that described chopped strand is selected from poly-paraphenylene terephthalamide to benzene
Diamidogen fiber, Fanglun 1313, polyparaphenylene's benzodiazole fiber or tencel fiber.
6. according to the preparation method according to any one of claim 1, it is characterised in that described beating equipment is pulled an oar selected from slot type
One or more in machine, disc mill, PFI mill.
Preparation method the most according to claim 6, it is characterised in that use trough-style pulp beater, in slurry solids weight hundred
Point concentration 0.5～5%, hang cutter load 1～10kg, beating time 2～24h under conditions of pull an oar；Or
Use disc mill, slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times 50～
Pull an oar under conditions of 200；Or
Use PFI mill, slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution 1000～
Pull an oar under conditions of 10000.
Preparation method the most according to any one of claim 1 to 7, it is characterised in that also include using pretreating agent pair
Mixed chopped strand carries out pretreatment.
Preparation method the most according to claim 8, it is characterised in that described pretreating agent selected from sulphuric acid, nitric acid, hydrochloric acid,
One or more in sodium hydroxide, chlorosulfonic acid, fluosulfonic acid, polyphosphoric acids and potassium permanganate.
10. a fiber pulp, raw fibre is made up of three kinds of fiber mixing that chemical composition is identical, draw ratio is different, passes through
In claim 1 to 9, arbitrary described preparation method prepares.
11. 1 kinds of fibrillating fibre pulps, beating degree is 25～90 ° of SR, water retention value 130～450%, weight average length 0.5～
1.5mm；Pulled an oar in beating equipment by raw fibre and obtain；Wherein raw fibre is identical by three kinds of chemical compositions, draw ratio not
The same chopped strand mixing with filtration structures is constituted；There is described in three kinds the draw ratio of the chopped strand of filtration structures
Distribution is 1300～2300,600～800,300～500, with total over dry of the described chopped strand with filtration structures
On the basis of weight, the percentage by weight of the chopped strand of three kinds of draw ratios is respectively as follows:
The fiber 10～25% of draw ratio 1300～2300,
The fiber 50～65% of draw ratio 600～800,
The fiber 20～25% of draw ratio 300～500
Described have the chopped strand of filtration structures selected from Fanglun 1414, poly-isophthaloyl isophthalic
Diamidogen fiber, polyparaphenylene's benzodiazole fiber or tencel fiber；
One or more in trough-style pulp beater, disc mill, PFI mill of described beating equipment.
12. fibrillating fibre pulps according to claim 11, it is characterised in that use trough-style pulp beater, solid at slurry
Body weight percentage concentration 0.5～5%, hang cutter load 1～10kg, beating time 2～24h under conditions of pull an oar；Or
Use disc mill, slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times 50～
Pull an oar under conditions of 200；Or
Use PFI mill, slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution 1000～
Pull an oar under conditions of 10000.
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| AT515693B1 (en) * | 2014-10-29 | 2015-11-15 | Chemiefaser Lenzing Ag | Fast fibrillating lyocell fibers and their use |
| CN107910477B (en) * | 2017-11-14 | 2021-02-09 | 宁波日新恒力科技有限公司 | Preparation method of cellulose and polyarylate fiber-based battery diaphragm |
| CN108396581B (en) * | 2018-02-06 | 2020-01-14 | 深圳市新纶科技股份有限公司 | Preparation method of fiber pulp and fiber pulp prepared by preparation method |
| CN108807794A (en) * | 2018-06-19 | 2018-11-13 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of high mechanical properties fiber base lithium battery diaphragm material |
| CN114703699B (en) * | 2022-04-13 | 2023-04-25 | 广东轻工职业技术学院 | Preparation method and application of fibrillated fibers |
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| JPH06240596A (en) * | 1993-02-15 | 1994-08-30 | Toyobo Co Ltd | Pulp |
| GB2325248B (en) * | 1997-05-15 | 2001-06-27 | J R Crompton Ltd | Paper |
| CN101381898A (en) * | 2008-10-14 | 2009-03-11 | 华南理工大学 | Fibrillation dissolving pulp, method for making same and applications |
| CN103485234A (en) * | 2013-10-22 | 2014-01-01 | 陕西科技大学 | Preparation method of mixed fiber system aramid paper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6890636B2 (en) * | 2000-04-11 | 2005-05-10 | Sordal Incorporated | Thermally stable, non-woven, fibrous paper, derivatives thereof, and methods for manufacturing the same |
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2014
- 2014-04-23 CN CN201410166671.5A patent/CN103966891B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06240596A (en) * | 1993-02-15 | 1994-08-30 | Toyobo Co Ltd | Pulp |
| GB2325248B (en) * | 1997-05-15 | 2001-06-27 | J R Crompton Ltd | Paper |
| CN101381898A (en) * | 2008-10-14 | 2009-03-11 | 华南理工大学 | Fibrillation dissolving pulp, method for making same and applications |
| CN103485234A (en) * | 2013-10-22 | 2014-01-01 | 陕西科技大学 | Preparation method of mixed fiber system aramid paper |
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