CN106283833A - A kind of preparation method of superhigh molecular weight polyethylene fibers paper - Google Patents

A kind of preparation method of superhigh molecular weight polyethylene fibers paper Download PDF

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Publication number
CN106283833A
CN106283833A CN201610921059.3A CN201610921059A CN106283833A CN 106283833 A CN106283833 A CN 106283833A CN 201610921059 A CN201610921059 A CN 201610921059A CN 106283833 A CN106283833 A CN 106283833A
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paper
molecular weight
weight polyethylene
resin
preparation
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CN106283833B (en
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龙柱
王长红
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Jiangnan University
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Jiangnan University
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/08—Dispersing agents for fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/005—Mechanical treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

The present invention relates to the preparation method of a kind of superhigh molecular weight polyethylene fibers paper, particularly belong to pulp technology for making paper.It prepares superhigh molecular weight polyethylene fibers paper by the enhancing of pretreatment, interpolation auxiliary agent, molding and body paper.The preparation technology of the present invention can obtain light weight, and evenness is good, and pore-size distribution is concentrated, and thickness range is big, and intensity is good, chemical-resistance and the UHMWPE fibrous paper of resistance to low temperature excellence.The UHMWPE fibrous paper of preparation may be used for battery separator paper, the filtering material etc. of the industry such as food, chemical industry.

Description

A kind of preparation method of superhigh molecular weight polyethylene fibers paper
Technical field
The present invention relates to the preparation method of a kind of superhigh molecular weight polyethylene fibers paper, particularly belong to pulp technology for making paper.
Background technology
Ultra-high molecular weight polyethylene (UHMWPE) fiber appearance is white, has intensity height, modulus height, light weight, chemistry Good stability, light resistance are good, low temperature resistant, many excellent performances such as length in service life, also have good resistance to chemical attack, ratio Energy absorption height, the impact resistance that electromagnetic wave tansmittivity is high, coefficient of friction is low, excellent and cutting resistance energy, and do not absorb water and raw The features such as the thing compatibility is good, and be the fiber of all high-strength high-modulus fibre Midst density minimum, also it is that unique one can be at water High-performance fiber floating on face, has outstanding physical and mechanical properties.Its specific strength is the highest in the fiber used at present , higher by 40% than p-aramid fiber, it is more than 15 times of high-quality steel wire, is 10 times of ordinary chemical fiber and high-quality steel fibre, Being only second to carbon fiber, use temperature can be the most subzero 150 DEG C.Its combination property has been over aramid fiber, and density is than aramid fiber more Little.
The function admirable of UHMWPE material, obtains in fields such as military affairs, filtering material, rope, covering material, composites Extensive application.Wherein, the membrane material that prepared by UHMWPE material achieves progress the most within the specific limits.As filter material Material, metal ion, air, solid particle etc. can be filtered by UHMWPE porous membrane.Can be used as the row such as chemical industry, scientific research, freezing The materials such as the suction of industry, filter.In heavy metal industrial effluent filters, many kinds of metal ions content after filtering reduces notable, impurity Content is effectively controlled.In oil field underground flooding filters, filtering material filtering accuracy prepared by UHMWPE is high, after filter in water Solid grain size is little, and suspension content is low, and service life is long, steady quality, it is possible to meet the multiple needs of low permeability oil field. Additionally, at Food & Drink industry, biological field, in pharmaceutical sanitary field, micro-filtration membrane all can be used.As biological field is anti-to enzyme Answer the secondary filter of liquid, filtration to vinegar in food service industry, filtration etc. to injection medicament in pharmaceutical sanitary field.It addition, In battery, microporosity separator, micro-pore septum are all the application of superelevation poromerics.
Patent publication No. is that the Chinese invention patent of CN 101164677 provides a kind of thermally induced phase separation and prepares The method of UHMWPE microporous membrane, uses UHMWPE resin as membrane material, under the effect of diluent, prepares through solution, squeezes Go out, stretching, cooling extraction, reclaim extractant, finally prepare UHMWPE perforated membrane.But it is little that this method is confined to prepare thickness Micropore filter material, such as film material, sheet material etc., limits the application of UHMWPE microporous membrane.
Patent publication No. is that the Chinese invention patent of CN103085211A provides a kind of ultra-high molecular weight polyethylene thin film The processing method of material, including typically sintering, freely sinter and mixed at high speed molding, it is characterised in that: described general sintering In compressing step as follows: put into compressing under UHMWPE powder one room temperature-sintering-cooling-take out goods in a mold. Period cold burden need to be incubated 4.0h and be sintered after being heated to 190-230 DEG C, energy consumption is greatly bigger defect.
Patent publication No. is that the Chinese invention patent of CN103572640A provides one p-aramid fiber fibrid system The method of standby p-aramid paper, mixes with aramid short fiber after being pulled an oar by aramid fiber fibrid, at oblique net after addition dispersant Molding on molding device, for UHMWPE fiber, it is impossible to making beating, therefore can not add UHMWPE pulp, it is impossible to increased by pulp Add the evenness of page, ensureing that suspension concentration is conducive to improving evenness performance under conditions of relatively low, but fibre density is light, dense Spend little, it is easier to float in water, it is impossible to form uniform fibrous suspension.
Before this patent, the precedent utilizing wet therapy forming process to prepare UHMWPE fibrous paper does not occurs.Wet moulding work Skill itself has the advantage do not replaced, and utilizes wet therapy forming process to prepare page, and energy consumption in production process is low, technical operation is relative Simply, the paper formation prepared is good, uniform pore diameter, and porosity is big, and thickness range is big, has the biggest technology and become in technique This advantage.Wet-forming technique is utilized to prepare the battery separator paper of Plant fiber or other chemical fibre and the technology ratio of other filter material More ripe, and the premium properties such as the high-strength and high-modulus of UHMWPE material itself, chemical stability, density is low is compared to Plant fiber It is all the most desirable with other chemical fibres.
Wet moulding requires that fiber can form uniform fibrous suspension in water, but UHMWPE fiber is relative to planting For fibres and other chemical fibres, density is lighter, and it is the fiber that in high-performance fiber, unique density is less than water, presents in water Floating state.And UHMWPE fiber surface does not has active group, having hydrophobicity, sheet forming is caused unfavorable shadow by these characteristics Ring so that sheet forming difficulty, after molding, paper formation is poor.It addition, be not bound with power between fiber itself so that the paper of preparation Page is almost without intensity.In the preparation process of UHMWPE fibrous paper, the raising of paper formation and intensity is that wet method is manufactured paper with pulp UHMWPE fibrous paper needs the emphasis broken through.
Summary of the invention
It is an object of the invention to overcome above-mentioned weak point, it is provided that the preparation of a kind of superhigh molecular weight polyethylene fibers paper Method, preferably goes out rational chemical assistant, and reasonably wet therapy forming process.
The technical scheme provided according to the present invention, the preparation method of a kind of superhigh molecular weight polyethylene fibers paper, step is such as Under:
1) pretreatment: ultra-high molecular weight polyethylene UHMWPE fiber is carried out pretreatment；
(2) add auxiliary agent: in terms of bone dry fiber quality, the slurry discongested adds 0-5% retention and drainage aid agent, 0- 15% reinforcing agent, 0.01-1.5% dispersant, dispersed with stirring is uniform successively；
(3) molding: step (2) gained slurry is carried out online manufacture paper with pulp, press dewatering, be dried, obtain fibrous web；
(4) enhancing of body paper: step (3) gained fibrous web is used impregnating resin method, direct hot pressing or first impregnates The way of resin then hot pressing prepares superhigh molecular weight polyethylene fibers paper；
Wherein, hot pressing condition is: 50-150 DEG C, carry out hot pressing 3min-6h under 3-30MPa；
The impregnation liquid used during resin dipping is resin solution, and wherein resin concentration is 0.1%-10%, and solvent is volatilization Property solvent, after gained dipping, the spread of paper is 0.5%-45%.
Described in step (1), pre-treatment step is as follows:
A, decontamination: use organic solvent to carry out superhigh molecular weight polyethylene fibers washing decontamination, clean with clear water；Described Organic solvent is dodecylbenzene sodium sulfonate, sodium lauryl sulphate, acetone or alcohol.
B, immersion: regulating step a gained fiber content in water is 0.15 ‰-7 ‰, add with bone dry fiber quality Meter, mass ratio is that the dispersant of 0.01%-5% soaks fiber, and soak time is 2-48h；
C, dispersion: add in step b gained mixed solution in terms of bone dry fiber quality, mass ratio is 0.01%-5% Defoamer, discongest fiber with the fiber equipment of discongesting subsequently and carry out mechanical dispersion.
Described defoamer is the contracting of glycerol polyethenoxy ether, organic silicon compound thing, fatty alcohol and ethylene oxide propylene oxide Compound or propanediol polyoxypropylene ether.
Described in step (2), retention and drainage aid agent is PAMC, PAMA, polyethyleneimine Amine, cationic starch, anionic starch, amphoteric starch, non-ionic starch, the graft copolymer of starch, chitosan, cellulose, One or more in hemicellulose.
Described dispersant is polyethylene glycol oxide, fatty alcohol-polyoxyethylene ether methyl-monosilane, oleic acid polyoxyethylene fat, carboxymethyl Sodium cellulosate, alkyl diphenyl ether sodium sulfonate, alkylphenol polyoxyethylene phosphate ester salt, octadecylamine, methylcellulose, tell One or more in temperature-80, Tween-60, sodium pyrophosphate or hexamethyl sodium phosphate.
Described in step (4), the resin in impregnating resin is acetate ethylene copolymer, methyl acrylate copolymer, asphalt mixtures modified by epoxy resin One or more in fat, phenolic resin, polyvinyl resin with super-high molecular weight, polyimide resin or acrylic resin.
The quantification of 8-500g m of described superhigh molecular weight polyethylene fibers paper-2, pore diameter range is at 10-1000um, hole Rate is at 5%-75%, and tensile index is at 10-150N m g-1。
The present invention is through mechanical dispersion-retention aid and filtering aid-dispersant aftershaping, then is increased by hot pressing and resin dipping Strong page.Discongesting is to be disperseed by fiber by mechanism, and dispersant makes fiber reduce with the interfacial tension of water, so that Fiber is uniformly dispersed, and paper formation improves.The paper that evenness is good can be prepared without reinforcing agent, but the paper intensity of preparation Difference, suitable reinforcing agent is conducive to the raising of paper strength, is also beneficial to molding and post processing.Impregnating through resin, or After hot repressing after resin dipping, or direct hot pressing, the strength-enhancing amount of page is the biggest.
Beneficial effects of the present invention: the preparation technology of the present invention can obtain lightweight, evenness is good, and pore-size distribution is concentrated, thick Degree scope is big, and intensity is good, chemical-resistance and the UHMWPE fibrous paper of resistance to low temperature excellence.The UHMWPE fibrous paper of preparation May be used for battery separator paper, the filtering material etc. of the industry such as food, chemical industry.
Accompanying drawing explanation
Fig. 1 is UHMWPE fibrous paper prepared by the present invention.
Detailed description of the invention
In order to be more clearly understood that the technology contents of the present invention, describing in detail especially exemplified by following example, embodiment is only Part data are provided, do not represent the performance range of whole UHMWPE fibrous paper of preparation.
Embodiment 1
(1) pretreatment: with 1.2 × 10-3The dodecylbenzene sodium sulfonate washing fiber of mol/L, and rinse well with clear water, Set Substance 50g m-2, the dispersion of in terms of bone dry fiber quality 0.05% will be added after fibre concentration regulation to 0.78 ‰ 12h is soaked in agent, is directly over fiber dissociation device and discongests after being subsequently added the defoamer of in terms of bone dry fiber quality 0.5%, The time of discongesting is 10min, and rotating speed is 2500r/min；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent PAMC (CPAM), the reinforcing agent carboxylic styrene butadiene latex of 8%, the polyethylene glycol oxide (PEO) of 0.06%, each Auxiliary agent stirs 60s with the speed of 800r/min after adding respectively；
(3) molding: step (2) gained slurry is manufactured paper with pulp according to the directly online of online concentration 0.17 ‰, presses under 4 kilograms of pressure Squeeze dehydration 30s, 105 DEG C be dried, obtain body paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 15MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 2
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.10%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 15MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 3
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.14%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 10MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 4
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.06%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 10MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 5
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.10%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 20MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 6
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.14%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 15MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 7
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.06%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 15MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 8
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.10%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 10MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 9
(1) pretreatment: with embodiment 1；
(2) auxiliary agent is added: be separately added in the slurry discongested in terms of bone dry fiber quality, the retention aid and filtering aid of 0.9% Agent CPAM, the reinforcing agent carboxylic styrene butadiene latex of 8%, the dispersant PEO of 0.14%；
(3) molding: step (2) gained slurry is directly surfed the Net with embodiment 1 manufacture paper with pulp, press dewatering, be dried, obtain former Paper；
(4) enhancing of body paper: at 150 DEG C, hot pressing 15min under 20MPa hot pressing pressure, obtain UHMWPE fiber after hot pressing Paper.
Design parameter is as shown in table 1.
Embodiment 10
Step (1)-(3) are with embodiment 7.
(4) enhancing of body paper: gained molding body paper dipping EVA resin, resin model 7A60H, resin are prepared by step (3) Concentration 0.5%, paper spread 13.5%, finally obtain superhigh molecular weight polyethylene fibers paper.Design parameter is as shown in table 1.
Embodiment 11
Step (1)-(3) are with embodiment 7.
(4) enhancing of body paper: paper dipping EVA resin prepared by step 3, resin model 7A60H, resin concentration 0.5%, Paper spread 12.6%.By dried for impregnated paper hot pressing, hot pressing pressure 15MPa, hot pressing time 15min, hot pressing temperature 80 DEG C, finally obtain superhigh molecular weight polyethylene fibers paper.Design parameter is as shown in table 1.
Table 1 UHMWPE fibrous paper tensile index
Factor PEO consumption/% Hot pressing pressure/MPa Tensile index/N m g-1
Embodiment 1 0.06 20 45.72
Embodiment 2 0.10 15 47.49
Embodiment 3 0.14 10 42.41
Embodiment 4 0.06 10 53.63
Embodiment 5 0.10 20 54.70
Embodiment 6 0.14 15 60.36
Embodiment 7 0.06 15 61.80
Embodiment 8 0.10 10 56.22
Embodiment 9 0.14 20 53.83
Embodiment 10 14.41
Embodiment 11 26.5
Shown in reference table 1, the tensile index of paper under the addition of different PEO and different hot pressing pressure, wherein, PEO Consumption 0.12%, during hot pressing pressure 15MPa, the tensile strength of paper is maximum.

Claims (7)

1. a preparation method for superhigh molecular weight polyethylene fibers paper, is characterized in that step is as follows:
(1) pretreatment: ultra-high molecular weight polyethylene UHMWPE fiber is carried out pretreatment；
(2) adding auxiliary agent: in terms of bone dry fiber quality, add 0-5% retention and drainage aid agent in the slurry discongested, 0-15% strengthens Agent, 0.01-1.5% dispersant, dispersed with stirring is uniform successively；
(3) molding: step (2) gained slurry is carried out online manufacture paper with pulp, press dewatering, be dried, obtain fibrous web；
(4) enhancing of body paper: step (3) gained fibrous web is used impregnating resin method, direct hot pressing or first impregnating resin Then the way of hot pressing strengthens superhigh molecular weight polyethylene fibers paper；
Wherein, hot pressing condition is: 50-150 DEG C, carry out hot pressing 3min-6h under 3-30MPa；
The impregnation liquid used during resin dipping is resin solution, and wherein resin concentration is 0.1%-10%, and solvent is volatile solvent, After gained dipping, the spread of paper is 0.5%-45%.
2. the preparation method of superhigh molecular weight polyethylene fibers paper as claimed in claim 1, is characterized in that described in step (1) pre- Process step is as follows:
A, decontamination: use organic solvent to carry out superhigh molecular weight polyethylene fibers washing decontamination, clean with clear water；
B, immersion: regulating step a gained fiber content in water is 0.15 ‰-7 ‰, add in terms of bone dry fiber quality, matter Amount ratio is that the dispersant of 0.01%-5% soaks fiber, and soak time is 2-48h；
C, dispersion: add in step b gained mixed solution in terms of bone dry fiber quality, mass ratio is the froth breaking of 0.01%-5% Agent, discongests fiber with the fiber equipment of discongesting subsequently and carries out mechanical dispersion.
3. the preparation method of superhigh molecular weight polyethylene fibers paper as claimed in claim 2, is characterized in that: defoamer in step c Condensation substance or propylene glycol polyoxy third for glycerol polyethenoxy ether, organic silicon compound thing, fatty alcohol and ethylene oxide propylene oxide Alkene ether.
4. the preparation method of superhigh molecular weight polyethylene fibers paper as claimed in claim 1, is characterized in that: described in step (2) Retention and drainage aid agent is PAMC, PAMA, polymine, cationic starch, anion shallow lake One or more in powder, amphoteric starch, non-ionic starch, the graft copolymer of starch, chitosan, cellulose, hemicellulose.
5. the preparation method of superhigh molecular weight polyethylene fibers paper as claimed in claim 1 or 2, is characterized in that: described dispersant It is polyethylene glycol oxide, fatty alcohol-polyoxyethylene ether methyl-monosilane, oleic acid polyoxyethylene fat, sodium carboxymethyl cellulose, alkyl diphenyl Ether sulfonic acid sodium, alkylphenol polyoxyethylene phosphate ester salt, octadecylamine, methylcellulose, tween 80, Tween-60, burnt phosphorus One or more in acid sodium or hexamethyl sodium phosphate.
6. the preparation method of superhigh molecular weight polyethylene fibers paper as claimed in claim 1, is characterized in that: step (4) described leaching Resin in stain resin is acetate ethylene copolymer, methyl acrylate copolymer, epoxy resin, phenolic resin, super high molecular weight One or more in polyvinyl resin, polyimide resin or acrylic resin.
7. the preparation method of superhigh molecular weight polyethylene fibers paper as claimed in claim 1, is characterized in that: described super high molecular weight The quantification of 8-500g m of polyethylene fibre paper-2, pore diameter range exists at 5%-75%, tensile index in 10-1000um, porosity 10-150N·m·g-1。
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CN111877050A (en) * 2020-07-28 2020-11-03 连云港市工业投资集团有限公司 Preparation method of 3D-doped layered porous graphene sheet paper-based friction material
CN113794030A (en) * 2021-09-07 2021-12-14 河北金力新能源科技股份有限公司 High-strength, high-modulus and high-thermal-stability lithium battery diaphragm and preparation method thereof
CN114687249A (en) * 2022-04-15 2022-07-01 江南大学 Thermosetting filter paper for internal combustion engine and preparation method thereof
CN114709560A (en) * 2022-04-15 2022-07-05 江南大学 Lithium ion battery diaphragm paper and preparation method thereof
CN114892443A (en) * 2022-05-05 2022-08-12 华南理工大学 High-strength high-permeability interlaminar toughened synthetic fiber paper base material and preparation method and application thereof
CN115651565A (en) * 2022-10-27 2023-01-31 吉翔宝（太仓）离型材料科技发展有限公司 High-strength high-temperature-resistant antistatic release film

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CN111877050A (en) * 2020-07-28 2020-11-03 连云港市工业投资集团有限公司 Preparation method of 3D-doped layered porous graphene sheet paper-based friction material
CN111877050B (en) * 2020-07-28 2023-01-31 江苏奥神新材料股份有限公司 Preparation method of 3D-doped layered porous graphene sheet paper-based friction material
CN113794030A (en) * 2021-09-07 2021-12-14 河北金力新能源科技股份有限公司 High-strength, high-modulus and high-thermal-stability lithium battery diaphragm and preparation method thereof
CN114687249A (en) * 2022-04-15 2022-07-01 江南大学 Thermosetting filter paper for internal combustion engine and preparation method thereof
CN114709560A (en) * 2022-04-15 2022-07-05 江南大学 Lithium ion battery diaphragm paper and preparation method thereof
CN114892443A (en) * 2022-05-05 2022-08-12 华南理工大学 High-strength high-permeability interlaminar toughened synthetic fiber paper base material and preparation method and application thereof
CN115651565A (en) * 2022-10-27 2023-01-31 吉翔宝（太仓）离型材料科技发展有限公司 High-strength high-temperature-resistant antistatic release film

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