CN103966891A - Method for preparing fiber pulp and prepared fiber pulp - Google Patents
Method for preparing fiber pulp and prepared fiber pulp Download PDFInfo
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- CN103966891A CN103966891A CN201410166671.5A CN201410166671A CN103966891A CN 103966891 A CN103966891 A CN 103966891A CN 201410166671 A CN201410166671 A CN 201410166671A CN 103966891 A CN103966891 A CN 103966891A
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Abstract
The invention discloses a method for preparing fiber pulp and the prepared fiber pulp. The method for preparing fiber pulp comprises the following steps: mixing more than two types or three types of fibers of which the chemical compositions are the same and the length-diameter ratio is different according to any proportion, and pulping in pulping equipment. The fiber is selected from chopped fiber, natural fiber capable of being subjected devillicate fibrillation or artificial fiber capable of being subjected to devillicate fibrillation, preferably from the chopped fiber, and relatively preferably from the chopped fiber with a fibrillation structure. The invention further provides the fiber pulp prepared by the preparation method. According to the invention, the fibers with different length-diameter ratios are mixed and pulped, the friction of the fibers with larger length-diameter ratio can be increased before pulping, thereby being capable of generating fibrillation under the action of soft external force, so that the pulping efficiency is improved, and energy consumption of the pulping is reduced; the fibers with smaller length-diameter ratio can avoid tangling in the fibers with larger length-diameter ratio, so that the fibers in the pulp can be relatively uniform.
Description
Technical field
The invention belongs to field of papermaking, be specifically related to a kind of preparation method of fiber pulp and the fiber pulp of preparation thereof.
Background technology
In paper industry, before paper is shaped, all must utilize physical method pulp treatment fiber, fibre morphology and structure are changed, as make its distortion, conquassation, brooming sub-wire etc., thereby make size performance adapt to the production requirement of paper machine and the prospective quality requirement of paper.This operating process that makes fiber be subject to the effects such as friction, shearing and conquassation is called making beating.The fibrous raw material kind of using in paper industry is at present numerous, for the fibrous raw material that there is fibrillation structure for some, in pulping process, be also accompanied by the generation of fibrillation process, fibrous body forms the process of more tiny fibril under external force, is in particular in that fibrocortex peels off, short texture, axially splitting, the variation such as dissociate.Making beating is the physical method of realizing fiber fibrillation, and concrete operations are carried out mechanical beating and grinding by various beating equipments to it again for after staple fiber is disperseed in water, make fiber surface produce a large amount of fento shape filoplumes and the pulp of height of formation fibrillation.
The pulping way of fibrillating fibre is also constantly modified in evolution, and these improve and mainly concentrate on preliminary treatment, chopping technique, fibrillation equipment improvement and mix the aspects such as making beating mode.The impact of the profile of tooth feature of just having mentioned relevant mill as U.S.'s patent of invention (patent No. US4472241, open day on September 18th, 1984) on effects on slurry making.Chinese invention patent application (publication number CN101381898A, open day on March 11st, 2009) discloses by regulating pretreating agent, pretreatment condition and refining process to improve the method for making beating efficiency.Mix making beating technology energy efficient to a certain extent, but the mixing making beating of mentioning in document is at present conceived to the mixing between different fibrous raw materials mostly, as disclosed use meta-aramid and p-aramid fiber mixing making beating or aramid fiber and other synthetic fiber in U.S.'s patent of invention of patent No. US5094913 (open day on March 10th, 1992), mix making beating.Fibrous raw material making beating for single kind, does not still have not only convenient but also energy-conservation optimization method.The problem such as in addition, above-mentioned corrective measure does not still solve that fiber length distribution in the preparation process of fibrillation dissolving pulp is uncontrollable, fibre length and beating degree can not be taken into account simultaneously.
Summary of the invention
For the problems referred to above, one object of the present invention is to provide a kind of preparation method of fiber pulp, especially the preparation method of fibrillating fibre pulp.The method can accelerating fibers distortion, improve making beating efficiency, thereby reduce beating energy consumption.The method can also be controlled fibre length and distribution of lengths flexibly, meets the performance requirement of different paper.
In order to realize foregoing invention object, the present invention has adopted following technical scheme:
A preparation method for fiber pulp, comprises two kinds of above fibers that chemical composition is identical, draw ratio is different, with arbitrary proportion, mixes, and in beating equipment, pulls an oar.
Preparation method of the present invention, preferably three kinds of above chemical composition fibers identical, that draw ratio is different mix with arbitrary proportion, in beating equipment, pull an oar.
Preparation method of the present invention, more preferably three kinds of fibers that chemical composition is identical, draw ratio is different mix with arbitrary proportion, in beating equipment, pull an oar.
Preferably, the aspect ratio distribution scope of described fiber is 1000～3000, and is selected from least one in 500～1000 and 100～500.
Preferred, the aspect ratio distribution scope of described fiber is 1300～2300, and is selected from least one in 600～800 and 300～500.
Preferably, the total oven dry weight of described fiber of take is benchmark, and the percentage by weight of the fiber of three kinds of draw ratios is respectively:
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.
Preferred, the total oven dry weight of described fiber of take is benchmark, and the percentage by weight of the fiber of three kinds of draw ratios is respectively:
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 be selected from staple fiber, can wire-dividing broom purification natural fabric or artificial fibre that can wire-dividing broom purification;
Preferred, described fiber is selected from staple fiber.
Preferably, staple fiber of the present invention is the staple fiber with fibrillation structure; More preferably from Fanglun 1414, polyparaphenylene's benzene two oxazole fiber or tencel fibers.
Preparation method of the present invention, described beating equipment is one or more in trough-style pulp beater, disc mill, PFI mill preferably;
Further preferred, adopt trough-style pulp beater, under the condition of slurry solids concentration expressed in percentage by weight 0.5～5%, extension cutter load 1～10kg, beating time 2～24h, pull an oar; Or
Adopt disc mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times 50～200, pull an oar; Or
Adopt PFI mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution 1000～10000, pull an oar.
Preparation method of the present invention, also comprises and adopts pretreating agent to carry out preliminary treatment to mixed staple fiber.
Preferably, described pretreating agent is selected from one or more in sulfuric acid, nitric acid, hydrochloric acid, NaOH, chlorosulfonic acid, fluosulfonic acid, polyphosphoric acids and potassium permanganate.
Another object of the present invention is to provide a kind of fiber pulp, raw fiber is mixed and forms with arbitrary proportion by two kinds of above fibers that chemical composition is identical, draw ratio is different, by above-mentioned preparation method, prepares.
A further object of the invention is to provide a kind of fibrillating fibre pulp, and beating degree is 25～90 ° of SR, water retention value 130～450%, weight average length 0.5～1.5mm; By raw fiber, in beating equipment, pull an oar and obtain; Wherein raw fiber is mixed and forms with arbitrary proportion by three kinds of above staple fibers with fibrillation structure that chemical composition is identical, draw ratio is different.
The staple fiber preferably, with fibrillation structure is selected from Fanglun 1414, polyparaphenylene Ben Bing bis-oxazole fiber or tencel fiber.
Preferably, described beating equipment is selected from one or more in trough-style pulp beater, disc mill, PFI mill;
Preferred, adopt trough-style pulp beater, under the condition of slurry solids concentration expressed in percentage by weight 0.5～5%, extension cutter load 1～10kg, beating time 2～24h, pull an oar; Or
Adopt disc mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times 50～200, pull an oar; Or
Adopt PFI mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution 1000～10000, pull an oar.
Preferably, described fibrillating fibre pulp, raw fiber by three kinds of draw ratios different described in there is fibrillation structure staple fiber form; Wherein three kinds of aspect ratio distribution scopes are 1000～3000,500～1000,100～500.
Preferred, described fibrillating fibre pulp, raw fiber by three kinds of draw ratios different described in there is fibrillation structure staple fiber form; Wherein three kinds of aspect ratio distribution scopes are 1300～2300,600～800,300～500
Preferably, described fibrillating fibre pulp, the described total oven dry weight with the staple fiber of fibrillation structure of take is benchmark, the percentage by weight of the staple fiber of three kinds of draw ratios is respectively:
The staple fiber 10～30% of draw ratio 1000～3000,
The staple fiber 40～70% of draw ratio 500～1000,
The staple fiber 20～30% of draw ratio 100～500.
Preferred, described fibrillating fibre pulp, the described total oven dry weight with the staple fiber of fibrillation structure of take is benchmark, the percentage by weight of the staple fiber of three kinds of draw ratios is respectively:
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.
Abundant fibrillating or fibrillation when fiber pulp requires to keep compared with big-length conventionally, thus larger specific area there is.The preparation method of fiber pulp of the present invention, the fiber having solved as how unification forms is raw material, prepares the problem of fiber pulp efficient, energy-conservationly.Preparation method of the present invention, be applicable to staple fiber, can wire-dividing broom purification natural fabric or artificial fibre that can wire-dividing broom purification, be particularly useful for staple fiber, be more specially adapted to have the staple fiber of fibrillation structure.
If only adopt a kind of draw ratio numerical value larger, the staple fiber as 1000～3000,, in pulping process, fiber easily tangles in external force with under interacting, and forms slurry group, and then affects pulp quality.If only adopt a kind of draw ratio numerical value less, the staple fiber as 100～500, the whole fibre length of pulp is little, can not meet the mechanical property of follow-up page.The present invention mixes making beating by the staple fiber of different draw ratios, and the fiber that draw ratio is larger can increase friction in making beating early stage, make fiber still fibrillation can occur in advance under soft External Force Acting, thereby has improved making beating efficiency, reduced beating energy consumption; The smaller fiber of major diameter can be avoided the interfibrous entanglement that draw ratio is large, makes in pulp fiber more even.
In addition, being also advantageous in that of preparation method of the present invention can be controlled the fiber length distribution in obtained pulp flexibly by adjusting the ratio of various draw ratio fibers.
By following experiment, the preparation method of optimization fiber pulp of the present invention.
experiment 1the fibrillation process of different draw ratio fibers
Test method: the Fanglun 1414 who diameter is to 10 μ m, length different (1mm, 3mm, 5mm, 7mm, 10mm, 12mm) (starches dense 10% with mill at identical beating process, grinding clearance 0.1mm) under, pull an oar, microscopic pattern (SEM) and the beating degree of testing every kind of fiber under different defibrination number of times change.
Experimental result: in Table 1.
Table 1 experimental example 1 result
As can be seen from the above table, when the length of fiber is when 1～3mm (draw ratio is 100～300), the progress of fiber fibrillation is very slow, and when the length of fiber is when 10～12mm (draw ratio is 1000～1200), although its initial beating-up period fibrillation process faster than length the fiber in 5～7mm (draw ratio is 500～700), but in the making beating later stage, its fibrillation process slows down.Observing ESEM can find, length is tangled in fiber part in pulping process of 10～12mm (draw ratio is 1000～1200), and the fiber that entanglement is 10mm more than length occurs the fiber of length 12mm.
Therefore, the fiber that draw ratio is different, the performance in pulping process is different.The fiber that draw ratio numerical value is less, fibrillation is made slow progress; The fiber that draw ratio numerical value is larger, fibrillation process is first fast rear slow, and occurs the entanglement of fiber.
experiment 2the impact of the weight proportion of different draw ratio fibers on fibrillation
Test method: the Fanglun 1414 who diameter is to 10 μ m, length different (1mm, 5mm, 10mm) (starches dense 10% than with mill at identical beating process by different quality, grinding clearance 0.1mm) under, pull an oar, the beating degree of testing each proportioning fiber under different defibrination number of times changes.
Experimental result: in Table 2.
Table 2 experimental example 2 results
As can be seen from the above table, when the fiber of draw ratio 1000 (fibre length 10mm) does not add fashionablely, the progress of making beating fiber fibrillation in early stage is very slow.Along with adding of the fiber of draw ratio 1000, fiber fibrillation process is significantly accelerated.But when the addition of draw ratio 1000 fibers is greater than 30%, the phenomenon that be can be observed fiber generation entanglement by ESEM is aggravated in a large number.
Therefore, the existence of the fiber that draw ratio numerical value is larger (draw ratio >1000), has significant impact to fiber fibrillation process, and it is in fiber pulp preparation method of the present invention, one of necessary fibrous raw material.But the percentage by weight of the fiber that described draw ratio numerical value is larger should be less than 30%, otherwise fiber can tangle in pulping process.
In addition, even if all contain the fiber that draw ratio numerical value is larger, the formula of three kinds of draw ratio fibers, fiber fibrillation process and last original fiber degree are all better than the formula of two kinds of draw ratio fibers.
Accompanying drawing explanation
Below, describe by reference to the accompanying drawings embodiment of the present invention in detail, wherein:
Fig. 1 shows be embodiment 1 initial beating-up period and latter stage fiber electromicroscopic photograph, the fiber electromicroscopic photograph that wherein 1a shows while being making beating 0.5h, the fiber electromicroscopic photograph that 1b shows while being making beating 4.5h.
The specific embodiment
Referring to specific embodiment, the present invention is described.It will be appreciated by those skilled in the art that these embodiment are only for the present invention is described, the scope that it does not limit the present invention in any way.
Experimental technique in following embodiment, if no special instructions, is conventional method.In following embodiment, medicinal raw material used, reagent material etc., if no special instructions, be commercially available purchase product.
embodiment 1a kind of fibrillation Fanglun 1414's pulp
Raw fiber is consisted of by the PPTA staple fiber (domestic) of three kinds of draw ratios, is specially:
(1) fiber A: long 9mm, diameter 6 μ m, draw ratio 1500, percentage by weight 25%;
(2) fiber B: long 8mm, diameter 10 μ m, draw ratio 800, percentage by weight 50%;
(3) fiber C: long 6mm, diameter 12 μ m, draw ratio 500, percentage by weight 25%.
Preparation by the following method:
(1) test the mass dryness fraction of every kind of staple fiber raw material;
(2) according to percentage by weight, take fiber A, B and C, mix, total oven dry weight 100g;
(3) staple fiber mixing is mixed with 10kg water;
(4) adopt trough-style pulp beater to pull an oar, beating process is: solid weight percent concentration 0.99%, hang cutter load 5kg, and beating time 5h, obtains target product.
The prepared fibrillation PPTA of the present embodiment pulp has following performance: 32 ° of SR of beating degree, water retention value 170.9%, weight average length 0.98mm.
When making beating 0.5h and making beating 5h, get respectively pulp in the form of 500 times of electric Microscopic observation fibers.The electromicroscopic photograph of fiber is shown in Fig. 1 a and 1b.Fig. 1 a demonstration, PPTA staple fiber only has a small amount of sub-wire on surface, and fabric integer still keeps straight bar-shaped form.Fig. 1 b demonstration, after the fiber mixing making beating of different draw ratios, fiber is membranaceous or fine strip.Illustrate that staple fiber fibrillation is complete.
embodiment 2a kind of fibrillation tencel fiber pulp
Raw fiber is consisted of by the sky silk staple fiber (domestic) of three kinds of draw ratios, is specially:
(1) fiber A: long 8mm, diameter 6 μ m, draw ratio 1333, percentage by weight 20%;
(2) fiber B: long 6mm, diameter 8 μ m, draw ratio 750, percentage by weight 60%;
(3) fiber C: long 6mm, diameter 13 μ m, draw ratio 462, percentage by weight 20%.
Preparation by the following method:
(1) test the mass dryness fraction of every kind of staple fiber raw material;
(2) according to weight proportion, take fiber A, B and C, mix, total oven dry weight 1kg;
(3) staple fiber mixing is mixed with 4kg water;
(4) adopt disc mill to pull an oar, beating process is: solid weight percent concentration 20%, and grinding clearance 0.1mm, defibrination number of times 80 times, obtains target product.
The fibrillation tencel fiber pulp that the present embodiment makes has following performance: 46 ° of SR of beating degree, water retention value 230.6%, weight average length 0.77mm
embodiment 3a kind of fibrillation polyparaphenylene Ben Bing bis-oxazole fiber (PBO) pulp
Raw fiber is consisted of by the PBO staple fiber (domestic) of three kinds of draw ratios, is specially:
(1) fiber A: long 12mm, diameter 6 μ m, draw ratio 2000, percentage by weight 10%;
(2) fiber B: long 6mm, diameter 10 μ m, draw ratio 600, percentage by weight 65%;
(3) fiber C: long 4mm, diameter 12 μ m, draw ratio 333, percentage by weight 20%.
Preparation by the following method:
(1) test the mass dryness fraction of every kind of staple fiber raw material;
(2) according to weight proportion, take fiber A, B and C, mix, total oven dry weight 0.2kg;
(3) staple fiber mixing is mixed with 3.8kg water;
(4) adopt PFI mill to pull an oar, beating process is: solid weight percent concentration 5%, and grinding clearance 0.5mm, defibrination 10000 turns, and obtains target product.
The fibrillation PBO pulp that the present embodiment makes has following performance: 37 ° of SR of beating degree, water retention value 212.5%, weight average length 0.89mm
embodiment 4a kind of cotton fiber pulp
Raw fiber is consisted of by the cotton fiber (domestic) of three kinds of draw ratio scopes, is specially:
(1) fiber A: long 45 ± 2mm, diameter 12 ± 1 μ m, draw ratio 3300～4000, percentage by weight 25%;
(2) fiber B: long 33 ± 2mm, diameter 12 ± 1 μ m, draw ratio 2400～3200, percentage by weight 55%;
(3) fiber C: long 23 ± 2mm, diameter 12 ± 1 μ m, draw ratio 1600～2300, percentage by weight 20%.
Preparation by the following method:
(1) test the mass dryness fraction of every kind of staple fiber raw material;
(2) according to weight proportion, take fiber A, B and C, mix, total oven dry weight 1kg;
(3) staple fiber mixing is mixed with 9kg water;
(4) adopt disc mill to pull an oar, beating process is: solid weight percent concentration 10%, and grinding clearance 0.1mm, defibrination number of times 50 times, obtains target product.
The cotton fiber pulp that the present embodiment makes has following performance: 36 ° of SR of beating degree, water retention value 110.5%, weight average length 1.18mm.
comparative example 1fiber Aspect Ratio forms the impact on fibrillation Fanglun 1414 pulp pulp performance
Raw fiber (Fanglun 1414 (domestic)) forms:
Scheme 1:(1) fiber A:, long 9mm, diameter 6 μ m, draw ratio 1500, percentage by weight 23%;
(2) fiber B: long 8mm, diameter 10 μ m, draw ratio 800, percentage by weight 54%;
(3) fiber C: long 6mm, diameter 12 μ m, draw ratio 500, percentage by weight 23%.
Scheme 2: fiber A, long 9mm, diameter 6 μ m, draw ratio 1500, percentage by weight 100%;
Scheme 3: fiber B, long 8mm, diameter 10 μ m, draw ratio 800, percentage by weight 100%;
Scheme 4: fiber C, long 6mm, diameter 12 μ m, draw ratio 500, percentage by weight 100%.
Above-mentioned four kinds of schemes all adopt following preparation flow:
(1) measure the mass dryness fraction of various staple fibers;
(2) according to percentage by weight, take various fibers, mix by (as needs), total oven dry weight is 100g;
(3) raw material staple fiber is mixed with 10kg water;
(4) adopt trough-style pulp beater to pull an oar, beating process is: solid weight percent concentration 0.99%, hang cutter load 5kg, and beating time 5h, obtains target product.
The performance of the fibrillation dissolving pulp that four kinds of schemes make is in Table 3.
The fibrillation dissolving pulp performance of four kinds of schemes of table 3
| 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 all higher than other three kinds of schemes, and kink 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 materials is greater than scheme 1, but because a large amount of long fibers are entangled to each other in pulping process, the weight average length of resulting pulp is slightly less than scheme 1, and the kink index of the pulp that scheme 2 obtains is far above scheme 1, after fibre matting, be unfavorable for the overlap joint between fiber, and easily in paper sheet formation process, form slurry group, affect page homogeneity and mechanical property.
(3) water retention value and the scheme 1 of the pulp that scheme 3 obtains differ larger, and it is larger that visible scheme 1 is compared the interfibrous friction of scheme 3, is conducive to the formation of fibril and the increase of pulp specific area.
(4) weight average length of the pulp that scheme 4 obtains, much smaller than scheme 1, is unfavorable for the mechanical property of page.
Conclusion:
The fibrous formula of the mixing draw ratio that scheme 1 embodies, is obviously better than the fiber prescription of single draw ratio, and its preparation-obtained pulp can meet the requirement of follow-up paper technology better, is conducive to improve paper performance.
Specific description of embodiments of the present invention above does not limit the present invention, and those skilled in the art can make according to the present invention various changes or distortion, only otherwise depart from spirit of the present invention, all should belong to the scope of claims of the present invention.
Claims (10)
1. a preparation method for fiber pulp, comprises more than two kinds, and preferably more than three kinds, more preferably three kinds of fibers that chemical composition is identical, draw ratio is different, mix with arbitrary proportion, in beating equipment, pull an oar.
2. preparation method according to claim 1, is characterized in that, the aspect ratio distribution scope of described fiber is 1000～3000, and is selected from least one in 500～1000 and 100～500;
Preferably, the aspect ratio distribution scope of described fiber is 1300～2300, and is selected from least one in 600～800 and 300～500.
3. preparation method according to claim 2, is characterized in that, the total oven dry weight of described fiber of take is benchmark, and the percentage by weight of the fiber of three kinds of draw ratios is respectively:
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;
Preferably, the total oven dry weight of described fiber of take is benchmark, and the percentage by weight of the fiber of three kinds of draw ratios is respectively:
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.
4. according to the preparation method described in any one in claims 1 to 3, it is characterized in that, described fiber be selected from staple fiber, can wire-dividing broom purification natural fabric or artificial fibre that can wire-dividing broom purification;
Preferably, described fiber is selected from staple fiber.
5. preparation method according to claim 4, is characterized in that, described staple fiber is the staple fiber with fibrillation structure; Preferably from Fanglun 1414, Fanglun 1313, polyparaphenylene's benzene two oxazole fiber or tencel fibers.
6. according to the preparation method described in any one in claim 1 to 5, it is characterized in that, described beating equipment is selected from one or more in trough-style pulp beater, disc mill, PFI mill;
Preferably, adopt trough-style pulp beater, under the condition of slurry solids concentration expressed in percentage by weight 0.5～5%, extension cutter load 1～10kg, beating time 2～24h, pull an oar; Or
Adopt disc mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times 50～200, pull an oar; Or
Adopt PFI mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution 1000～10000, pull an oar.
7. according to the preparation method described in any one in claim 1 to 6, it is characterized in that, also comprise and adopt pretreating agent to carry out preliminary treatment to mixed staple fiber; Described pretreating agent is one or more in sulfuric acid, nitric acid, hydrochloric acid, NaOH, chlorosulfonic acid, fluosulfonic acid, polyphosphoric acids and potassium permanganate preferably.
8. a fiber pulp, raw fiber is mixed and forms with arbitrary proportion by two kinds of above fibers that chemical composition is identical, draw ratio is different, by arbitrary described preparation method in claim 1 to 6, prepares.
9. a fibrillating fibre pulp, beating degree is 25～90 ° of SR, water retention value 130～450%, weight average length 0.5～1.5mm; By raw fiber, in beating equipment, pull an oar and obtain; Wherein raw fiber is mixed and forms with arbitrary proportion by three kinds of above staple fibers with fibrillation structure that chemical composition is identical, draw ratio is different;
The staple fiber preferably, with fibrillation structure is selected from Fanglun 1414, Fanglun 1313, polyparaphenylene Ben Bing bis-oxazole fiber or tencel fiber;
Preferably, described beating equipment is selected from one or more in trough-style pulp beater, disc mill, PFI mill;
Preferred, adopt trough-style pulp beater, under the condition of slurry solids concentration expressed in percentage by weight 0.5～5%, extension cutter load 1～10kg, beating time 2～24h, pull an oar; Or
Adopt disc mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, grinding clearance 0.05～0.8mm, defibrination number of times 50～200, pull an oar; Or
Adopt PFI mill, under the condition of slurry solids concentration expressed in percentage by weight 5～30%, beating interstice 0.1～0.5mm, making beating revolution 1000～10000, pull an oar.
10. fibrillating fibre pulp according to claim 9, it is characterized in that, raw fiber by three kinds of draw ratios different described in there is fibrillation structure staple fiber mix and form, wherein three kinds of aspect ratio distribution scopes are 1000～3000,500～1000,100～500, be preferably 1300～2300,600～800,300～500;
Preferably, the described total oven dry weight with the staple fiber of fibrillation structure of take is benchmark, and the percentage by weight of the staple fiber of three kinds of draw ratios is respectively:
The staple fiber 10～30% of draw ratio 1000～3000,
The staple fiber 40～70% of draw ratio 500～1000,
The staple fiber 20～30% of draw ratio 100～500;
Preferred, the described total oven dry weight with the staple fiber of fibrillation structure of take is benchmark, and the percentage by weight of the fiber of three kinds of draw ratios is respectively:
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.
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| CN107109735A (en) * | 2014-10-29 | 2017-08-29 | 连津格股份公司 | Lyocell fiber of quick fibrillation and application thereof |
| CN107910477A (en) * | 2017-11-14 | 2018-04-13 | 宁波日新恒力科技有限公司 | A kind of preparation method of cellulose and polyarylate fiber base battery membrane |
| CN108396581A (en) * | 2018-02-06 | 2018-08-14 | 深圳市新纶科技股份有限公司 | A kind of preparation method of fiber pulp and its fiber pulp of preparation |
| 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 |
| CN114703699A (en) * | 2022-04-13 | 2022-07-05 | 广东轻工职业技术学院 | Preparation method and application of fibrillated fibers |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107109735A (en) * | 2014-10-29 | 2017-08-29 | 连津格股份公司 | Lyocell fiber of quick fibrillation and application thereof |
| CN107910477A (en) * | 2017-11-14 | 2018-04-13 | 宁波日新恒力科技有限公司 | A kind of preparation method of cellulose and polyarylate fiber base battery membrane |
| 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 |
| CN108396581A (en) * | 2018-02-06 | 2018-08-14 | 深圳市新纶科技股份有限公司 | A kind of preparation method of fiber pulp and its fiber pulp of preparation |
| 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 |
| CN114703699A (en) * | 2022-04-13 | 2022-07-05 | 广东轻工职业技术学院 | Preparation method and application of fibrillated fibers |
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