CN110318286A - A kind of preparation method of Halogen sound-absorbing and flame-retardant paper - Google Patents

A kind of preparation method of Halogen sound-absorbing and flame-retardant paper Download PDF

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Publication number
CN110318286A
CN110318286A CN201910589796.1A CN201910589796A CN110318286A CN 110318286 A CN110318286 A CN 110318286A CN 201910589796 A CN201910589796 A CN 201910589796A CN 110318286 A CN110318286 A CN 110318286A
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sound
slurry
absorbing
retardant
flame
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徐永建
李伟
唐超群
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Shaanxi University of Science and Technology
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Shaanxi University of Science and Technology
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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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • 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
    • D21H13/16—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/64—Alkaline compounds
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • 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
    • 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
    • D21H21/34—Ignifugeants

Abstract

A kind of preparation method of Halogen sound-absorbing and flame-retardant paper, include the following steps: the selection of slurry, defibrination, plant fiber fabricated in situ inorganic fire retardants, it is with slurry, manufacture paper with pulp, impregnate, drying.The slurry of the Halogen sound-absorbing and flame-retardant paper includes 40%~70% softwood pulp, and the beating degree of needlebush is 20~35 ° of SR, 30%~60% glass fibre, the poly-vinyl alcohol solution that mass concentration is 5%~20%.The present invention combines a kind of green of various measures preparation, environmentally friendly and sound-absorbing and excellent fireproof performance Halogen sound-absorbing and flame-retardant paper, new decorative material for building is met for the feature of environmental protection, dicoration, the requirements at the higher level of anti-flammability, the conventional porous sound-absorbing material using centrifugally glass-wool as representative can be substituted, the improvement of noise pollution is also had a very important significance.

Description

A kind of preparation method of Halogen sound-absorbing and flame-retardant paper
Technical field
The present invention relates to extraordinary paper base field of functional materials, and in particular to a kind of preparation method of Halogen sound-absorbing and flame-retardant paper.
Background technique
Noise pollution is the big public hazards of human habitat, it not only seriously damages our auditory nerve, cardiovascular system System and nervous system, and the aging of building, industrial machinery can also be accelerated, influence precision and the service life of instrument. With everybody pay attention to day by day to noise control problem, the method for various sqouynd absorption lowering noise is also born therewith.And traditional suction Sound material glass cotton because there is many defects, as noise reduction coefficient is low, service life is short, not environmentally, be easy to cause it is secondary The problems such as pollution, has faded out market and has been substituted by novel sound-absorbing material with being restricted.Fiber-like sound-absorbing material can To there is good sound absorption effect in wider frequency band, therefore it can substitute and absorb sound by the conventional porous of representative of centrifugally glass-wool Material etc., this environmentally friendly, the reusable, decoration functions and the sound-absorbing material of superior acoustical behavior of being provided simultaneously with will be got over To obtain the approval in market more.
On the other hand, with the increasingly increase that practical and security against fire of living requires, people are for the fire-retardant of paper-based products It is required that also higher and higher, currently used fire retardant all contains halogen mostly, although the very high of its flame retarding efficiency in burning A large amount of hydrogen halides can be released, are produced thick smoke, secondary pollution is caused, danger will also result in human respiratory tract and other organs Evil, or even threaten the life security of human body.Flame-retarded technology has entered a new developing stage, the resistance of the following paper base material at present Combustion technology just develops towards efficient, economic, environmentally friendly direction.Since inorganic fire retardants includes, toxicity is low, and thermal stability is good；No It is precipitated, there is lasting flame retardant effect；Do not generate corrosive gas；It is cheap；The advantages that lesser smoke amount, therefore inorganic resistance The application of combustion agent in all fields just gradually replaces organic fire-retardant, especially halogenated flame retardant, therefore synthesizes inorganic fire retardants Research significance it is great.
Currently, society rapidly increases the demand of sound-absorbing material, traditional sound-absorbing material has been unable to satisfy people to ring Guarantor property, dicoration, the requirements at the higher level of anti-flammability.Therefore, research and the new environment friendly acoustical absorption fire proofing of development and application, which have become, exerts The direction of power.
Summary of the invention
The purpose of the present invention is to provide one kind, not only preparation process is simple, excellent product performance, and can satisfy new Type building decoration materials also have very the improvement of noise pollution the feature of environmental protection, dicoration, the requirements at the higher level of anti-flammability The preparation method of the Halogen sound-absorbing and flame-retardant paper of significance.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
1) defibrination: pre-processing after taking needlebush pulpboard to impregnate in water through defibrination, and slurry is wrung out, equilibrium water conten obtains needle Leaf wood pulp；
2) chlorination that concentration is 0.5~1.5mol/L plant fiber fabricated in situ magnesium hydroxide: is added into softwood pulp Slurry is taken out after magnesium solution stirring, preimpregnation, then after sodium hydroxide solution reaction is added thereto, filters, wring out, equilibrium water conten Needlebush slurry is obtained, wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: taking 40%~70% needlebush slurry and 30%~60% glass fibre by mass percentage It is placed in fluffer and adds 0.008%~0.01% dispersing agent of water and fiber quality, discongest 1w and turn to obtain glass fibre and plant fibre The mixed slurry of dimension；
4) vinal dissolves: it is 5%~20% that vinal, which is dissolved in water, and is made into mass concentration Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the retention agent of its quality 0.1%~0.5% to copy in pattern into fiber-incorporated slurry and take on device It manufactures paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying；
7) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper.
Soaking time is 4h or more to step 1) the needlebush pulpboard in water, use PFI fiberizer beating degree for 20~ 35 ° of SR, slurry equilibrium water conten time are at least for 24 hours.
Step 2) the slurry presoaks 30~60min in magnesium chloride solution, and the reaction time is 10~30min.
The dispersing agent of the step 3) is fatty amine oxide or polyethylene glycol oxide.
Vinal water solution temperature is 70~90 DEG C in the step 4).
The retention agent of the step 5) is Cationic retention aid, and the page quantification for forming of manufacturing paper with pulp is 60-70g/m2。
The microwave drying time of the step 6) is 10~60s.
Paper web of the step 6) after microwave drying is transferred between two copper mesh, and paper web is impregnated in mass concentration and is 0.5%~3% retardant solution.
The fire retardant is that organic fire-retardant or inorganic fire retardants are mixed with organic fire-retardant as what the mass ratio of 5:1-3 compounded Fire retardant is closed, wherein organic fire-retardant is phosphorus-nitrogen containing flame retardant, and inorganic fire retardants is magnesium hydroxide.
Step 8) the drying temperature is 140 DEG C~160 DEG C.
The beneficial effects of the present invention are:
Firstly, the present invention makes plant fibre surface expose more free hydroxyl by pre-processing to plant fiber defibrination Base increases the degree of plant fiber fibrillating and the swollen that absorbs water.And technology is filled with using fibrocyte, select magnesium chloride with Sodium hydroxide reacts in plant fiber cells chamber or cell wall, the inorganic magnesium hydroxide of in-situ preparation anti-flammability precipitating or colloidal sol Fire retardant, has achieved the purpose that flame-retardant modified to plant fiber, and improves magnesium hydroxide by addition cationic retention aid agent Retention then further prepares fire retardant papers.
Secondly, glass fibre is a kind of light, high-strength, non-ignitable, heat insulation sound absorbent high-performance fiber, product is with polyvinyl alcohol Glass fibre and plant fiber are mixed by wet papermaking technology and are manufactured paper with pulp as binder by fiber, and are had on a small quantity by dipping Machine fire retardant achievees the effect that organic-inorganic cooperative flame retardant.On the one hand the anti-flammability of paper can be improved in the addition of glass fibre Can, another aspect paper is still able to maintain pattern after combustion, does harm to huamn body in air to will not float.
Finally, the sound-absorbing material of Single Fiber component is often unable to satisfy higher sound absorption requirement, especially middle low-frequency range Sound absorbing performance.And Halogen sound-absorbing and flame-retardant paper is a kind of fiber-like porous sound absorption composite material, and wide-band noise may be implemented Efficient absorption, and meet the greenization of sound-absorbing material, lightening, efficient development trend.
Specific embodiment
Present invention is further described in detail combined with specific embodiments below, but not as a limitation of the invention.
Embodiment 1:
1) defibrination: taking needlebush pulpboard to impregnate 4h or more in water, then carries out defibrination pretreatment using PFI fiberizer, Control beating degree is 24 ° of SR, and slurry wrung out, equilibrium water conten it is above for 24 hours softwood pulp；
2) magnesium chloride solution that concentration is 0.5mol/L plant fiber fabricated in situ magnesium hydroxide: is added into softwood pulp Slurry is taken out after stirring, preimpregnation 30min, then after sodium hydroxide solution reaction 20min is added thereto, filters, wring out, balance Moisture obtains needlebush slurry, and wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 70% needlebush slurry and 30% glass fibre being taken to be placed in fluffer by mass percentage Add 0.009% dispersing agent fatty amine oxide of water and fiber quality, discongests 1w and turn to obtain the mixing of glass fibre and plant fiber Slurry；
4) vinal dissolves: it is 10% that vinal, which is dissolved in, and is made into mass concentration in 70 DEG C of water Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the Cationic retention aid of its quality 0.5% to copy in pattern into fiber-incorporated slurry and take device On manufacture paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying 60s；
7) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper in 140 DEG C.
By Halogen sound-absorbing and flame-retardant paper prepared by method described in the present embodiment, quantification of 60g/m2, bulk is 4.33cm3/ g, tensile strength be 20.5 N/15mm, magnesium hydroxide synthetic quantity be 20% when, paper char length be 86mm, 2 grades Fire-retardant, average sound absorption coefficient is up to 0.47.
Embodiment 2:
1) defibrination: taking needlebush pulpboard to impregnate 4h or more in water, then carries out defibrination pretreatment using PFI fiberizer, Control beating degree is 24 ° of SR, and slurry wrung out, equilibrium water conten it is above for 24 hours softwood pulp；
2) magnesium chloride solution that concentration is 0.5mol/L plant fiber fabricated in situ magnesium hydroxide: is added into softwood pulp Slurry is taken out after stirring, preimpregnation 50min, then after sodium hydroxide solution reaction 10min is added thereto, filters, wring out, balance Moisture obtains needlebush slurry, and wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 40% needlebush slurry and 60% glass fibre being taken to be placed in fluffer by mass percentage Add 0.008% dispersing agent polyethylene glycol oxide of water and fiber quality, discongests 1w and turn to obtain the mixing slurry of glass fibre and plant fiber Material；
4) vinal dissolves: it is 10% that vinal, which is dissolved in, and is made into mass concentration in 90 DEG C of water Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the Cationic retention aid of its quality 0.5% to copy in pattern into fiber-incorporated slurry and take device On manufacture paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying 60s；
7) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper in 150 DEG C.
The Halogen sound-absorbing and flame-retardant paper of preparation in accordance with the method for the present invention, quantification of 60g/m2, bulk 4.39cm3/ G, tensile strength is 16.8 N/15mm, and when magnesium hydroxide synthetic quantity is 30%, paper char length is 77mm, and 2 grades fire-retardant, is put down Equal acoustic absorptivity is up to 0.49.
Embodiment 3:
1) defibrination: taking needlebush pulpboard to impregnate 4h or more in water, then carries out defibrination pretreatment using PFI fiberizer, Control beating degree is 30 ° of SR, and slurry wrung out, equilibrium water conten it is above for 24 hours softwood pulp；
2) plant fiber fabricated in situ magnesium hydroxide: the magnesium chloride solution that concentration is 1mol/L is added into softwood pulp and stirs Slurry is taken out after mixing, presoaking 50min, then after sodium hydroxide solution reaction 10min is added thereto, filters, wring out, equilibrium water Get needlebush slurry, wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 60% needlebush slurry and 40% glass fibre being taken to be placed in fluffer by mass percentage Add 0.01% dispersing agent fatty amine oxide of water and fiber quality, discongests 1w and turn to obtain the mixing slurry of glass fibre and plant fiber Material；
4) vinal dissolves: it is 10% that vinal, which is dissolved in, and is made into mass concentration in 80 DEG C of water Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the Cationic retention aid of its quality 0.5% to copy in pattern into fiber-incorporated slurry and take device On manufacture paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying 60s；
7) it impregnates: the paper web after microwave drying being transferred between two copper mesh, paper web, which is impregnated in mass concentration, is In 0.5% phosphorus-nitrogen containing flame retardant solution；
8) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper in 160 DEG C.
The Halogen sound-absorbing and flame-retardant paper of preparation in accordance with the method for the present invention, quantification of 60g/m2, bulk 4.48cm3/ G, tensile strength are 19.8 N/15mm, and magnesium hydroxide synthetic quantity is 30%, and the mass concentration of maceration extract is 0.5%, dip time When for 60s, paper char length is 64mm, and 2 grades fire-retardant, and average sound absorption coefficient is up to 0.56.
Embodiment 4:
1) defibrination: taking needlebush pulpboard to impregnate 4h or more in water, then carries out defibrination pretreatment using PFI fiberizer, Control beating degree is 30 ° of SR, and slurry wrung out, equilibrium water conten it is above for 24 hours softwood pulp；
2) magnesium chloride solution that concentration is 1.5mol/L plant fiber fabricated in situ magnesium hydroxide: is added into softwood pulp Slurry is taken out after stirring, preimpregnation 60min, then after sodium hydroxide solution reaction 30min is added thereto, filters, wring out, balance Moisture obtains needlebush slurry, and wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 50% needlebush slurry and 50% glass fibre being taken to be placed in fluffer by mass percentage Add 0.0085% dispersing agent polyethylene glycol oxide of water and fiber quality, discongests 1w and turn to obtain the mixing slurry of glass fibre and plant fiber Material；
4) vinal dissolves: it is 20% that vinal, which is dissolved in, and is made into mass concentration in 75 DEG C of water Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the Cationic retention aid of its quality 0.1% to copy in pattern into fiber-incorporated slurry and take device On manufacture paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying 10s；
7) it impregnates: the paper web after microwave drying is transferred between two copper mesh, it is 1% that paper web, which is impregnated in mass concentration, Phosphorus-nitrogen containing flame retardant solution in；
8) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper in 145 DEG C.
The Halogen sound-absorbing and flame-retardant paper of preparation in accordance with the method for the present invention, quantification of 60g/m2, bulk 4.40cm3/ G, tensile strength 17.6N/15mm, when magnesium hydroxide synthetic quantity is 30%, when impregnation concentration is 1%, dip time 60s When, paper char length is 48mm, and 1 grade is fire-retardant, and average sound absorption coefficient is up to 0.50.
Embodiment 5:
1) defibrination: taking needlebush pulpboard to impregnate 4h or more in water, then carries out defibrination pretreatment using PFI fiberizer, Control beating degree is 35 ° of SR, and slurry wrung out, equilibrium water conten it is above for 24 hours softwood pulp；
2) plant fiber fabricated in situ magnesium hydroxide: the magnesium chloride solution that concentration is 1mol/L is added into softwood pulp and stirs Slurry is taken out after mixing, presoaking 40min, then after sodium hydroxide solution reaction 10min is added thereto, filters, wring out, equilibrium water Get needlebush slurry, wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 65% needlebush slurry and 35% glass fibre being taken to be placed in fluffer by mass percentage Add 0.0095% dispersing agent fatty amine oxide of water and fiber quality, discongests 1w and turn to obtain the mixing of glass fibre and plant fiber Slurry；
4) vinal dissolves: it is 5% that vinal, which is dissolved in, and is made into mass concentration in 85 DEG C of water Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the Cationic retention aid of its quality 0.3% to copy in pattern into fiber-incorporated slurry and take device On manufacture paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying 30s；
7) it impregnates: the paper web after microwave drying is transferred between two copper mesh, it is 2% that paper web, which is impregnated in mass concentration, The mixing retardant solution that compounds by the mass ratio of 5:1 of phosphorus-nitrogen containing flame retardant and magnesium hydroxide in；
8) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper in 155 DEG C.
The Halogen sound-absorbing and flame-retardant paper of preparation, quantification of 60g/m2, bulk are in accordance with the method for the present invention 4.43cm3/ g, tensile strength 17.6N/15mm, when magnesium hydroxide synthetic quantity is 30%, when impregnation concentration is 2%, dipping When time is 60s, paper char length is 25mm, and 1 grade fire-retardant, and average sound absorption coefficient is up to 0.53.
Embodiment 6:
1) defibrination: taking needlebush pulpboard to impregnate 4h or more in water, then carries out defibrination pretreatment using PFI fiberizer, Control beating degree is 20 ° of SR, and slurry wrung out, equilibrium water conten it is above for 24 hours softwood pulp；
2) magnesium chloride solution that concentration is 1.2mol/L plant fiber fabricated in situ magnesium hydroxide: is added into softwood pulp Slurry is taken out after stirring, preimpregnation 50min, then after sodium hydroxide solution reaction 25min is added thereto, filters, wring out, balance Moisture obtains needlebush slurry, and wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 70% needlebush slurry and 30% glass fibre being taken to be placed in fluffer by mass percentage Add 0.01% dispersing agent polyethylene glycol oxide of water and fiber quality, discongests 1w and turn to obtain the mixing slurry of glass fibre and plant fiber Material；
4) vinal dissolves: it is 15% that vinal, which is dissolved in, and is made into mass concentration in 80 DEG C of water Poly-vinyl alcohol solution is dispersed with stirring into uniform by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry with glass bar The fiber-incorporated slurry of suspension；
5) it manufactures paper with pulp: being added after the Cationic retention aid of its quality 0.4% to copy in pattern into fiber-incorporated slurry and take device On manufacture paper with pulp forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying 40s；
7) it impregnates: the paper web after microwave drying is transferred between two copper mesh, it is 3% that paper web, which is impregnated in mass concentration, The mixing retardant solution that compounds by the mass ratio of 5:3 of phosphorus-nitrogen containing flame retardant and magnesium hydroxide in；
8) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper in 160 DEG C.

Claims (10)

1. a kind of preparation method of Halogen sound-absorbing and flame-retardant paper, which comprises the following steps:
1) defibrination: pre-processing after taking needlebush pulpboard to impregnate in water through defibrination, and slurry is wrung out, equilibrium water conten obtains needlebush Slurry；
2) it is molten that the magnesium chloride that concentration is 0.5~1.5mol/L plant fiber fabricated in situ magnesium hydroxide: is added into softwood pulp Slurry is taken out after liquid stirring, preimpregnation, then after sodium hydroxide solution reaction is added thereto, filters, wring out, equilibrium water conten obtains needle Leaf wood pulp material, wherein the molar concentration rate of magnesium chloride solution and sodium hydroxide solution is 1:2；
3) fiber disperses: 40%~70% needlebush slurry and 30%~60% glass fibre being taken to be placed in by mass percentage In fluffer plus 0.008%~0.01% dispersing agent of water and fiber quality, discongests 1w and turn to obtain glass fibre and plant fiber Mixed slurry；
4) vinal dissolves: vinal being dissolved in water and is made into the poly- second that mass concentration is 5%~20% Enolate solution is dispersed with stirring into even suspension with glass bar by mixed slurry by the 0.1% dense addition poly-vinyl alcohol solution of slurry Fiber-incorporated slurry；
5) it manufactures paper with pulp: being added after the retention agent of its quality 0.1%~0.5% to copy to take in pattern into fiber-incorporated slurry and manufacture paper with pulp on device Forming；
6) wet web manufactured paper with pulp microwave drying: is placed in micro-wave oven high fire microwave drying；
7) dry: page being put into hot air circulation drying oven and dries to obtain Halogen sound-absorbing and flame-retardant paper.
2. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, which is characterized in that the step 1) needlebush Soaking time is 4h or more to pulpboard in water, uses PFI fiberizer beating degree for 20~35 ° of SR, the slurry equilibrium water conten time is extremely Few is for 24 hours.
3. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: the step 2) slurry exists 30~60min is presoaked in magnesium chloride solution, the reaction time is 10~30min.
4. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: the dispersion of the step 3) Agent is fatty amine oxide or polyethylene glycol oxide.
5. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: poly- second in the step 4) Enol fiber water solution temperature is 70~90 DEG C.
6. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: the retention of the step 5) Agent is Cationic retention aid, and the page quantification for forming of manufacturing paper with pulp is 60-70g/m2。
7. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: the microwave of the step 6) Drying time is 10~60s.
8. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: the step 6) is through microwave Paper web after drying is transferred between two copper mesh, and paper web is impregnated in the retardant solution that mass concentration is 0.5%~3%.
9. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 8, it is characterised in that: the fire retardant is organic The mixing fire retardant that fire retardant or inorganic fire retardants are compounded with organic fire-retardant by the mass ratio of 5:1-3, wherein organic fire-retardant For phosphorus-nitrogen containing flame retardant, inorganic fire retardants is magnesium hydroxide.
10. the preparation method of Halogen sound-absorbing and flame-retardant paper according to claim 1, it is characterised in that: the step 8) drying Temperature is 140 DEG C~160 DEG C.
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