CN105755889A - Preparation method of flame-retardant kraft paper - Google Patents

Preparation method of flame-retardant kraft paper Download PDF

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Publication number
CN105755889A
CN105755889A CN201610200769.7A CN201610200769A CN105755889A CN 105755889 A CN105755889 A CN 105755889A CN 201610200769 A CN201610200769 A CN 201610200769A CN 105755889 A CN105755889 A CN 105755889A
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China
Prior art keywords
parts
kraft paper
preparation
flame retardant
paper
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CN201610200769.7A
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Inventor
顾建芳
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Tripartite Confrontation Packing Co Ltd Of Suzhou City
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Tripartite Confrontation Packing Co Ltd Of Suzhou City
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Priority to CN201610200769.7A priority Critical patent/CN105755889A/en
Publication of CN105755889A publication Critical patent/CN105755889A/en
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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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • 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
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

The invention discloses a preparation method of flame-retardant kraft paper.The method comprises the following steps that 1, unbleached softwood kraft pulp, epoxy resin, bamboo fibers, polyvinyl alcohol and paraffin oil are mixed to be uniform, heated and pressurized, the mixture is washed with alkali liquor and dried, and mixed wood pulp is obtained for use; 2, TiO2 powder, a surfactant and aqueous alkali are weighed and mixed, magnetic stirring is conducted, the mixture is put into a high-pressure kettle for a hydrothermal reaction, the high-pressure kettle is naturally cooled to room temperature, centrifugation, washing and drying are conducted, and TiO2 nanowires are obtained; 3, the mixed wood pulp, the TiO2 nanowires, talcum powder and the surfactant are put into a repulping pool, industrial water is added, and the materials are stirred and mixed to be uniform and then conveyed to a pulping machine to be dispersed uniformly and conveyed to a complete tower for use; 4, pulp is conveyed to a papermaking machine.According to the obtained kraft paper, the folding endurance and flame-retardant property of the kraft paper are greatly improved on the basis that the good tensile strength and bursting strength are maintained, and the application range is wider.

Description

A kind of preparation method of flame retardant type kraft paper
Technical field
The invention belongs to paper-making technology field, the preparation method specifically disclosing a kind of flame retardant type kraft paper.
Background technology
When the past, using the paper that first-class calf-skin makes is kraft paper, and along with the invention of papermaking technology, people begin to use acerose lumber fibre to manufacture kraft paper.Owing to this paper pulled out through the paper pulp of special processing is filemot, and having fabulous toughness and tearing toughness, picture Corii Bovis seu Bubali very, so being referred to as kraft paper by people.Present kraft paper nearly all uses paper pulp to break into.
Kraft paper is significantly high because of its intensity, is often used as packaging material.Generally in yellowish-brown, the kraft pulp of half drift or full drift is filbert, cream-colored or white.Quantitative 80～120g/m2, fracture length is typically in more than 6000m.Tearing toughness, merit of breaking and resistance to vibration are significantly high.It mostly is roll web, also has sheet paper.Employing kp softwood pulp is raw material, through making beating, manufactures paper with pulp and form on fourdrinier machine.Can be used as cement bag paper, M.G. pure sulphite paper, glue envelope paper dress, bituminized paper, cable protective paper, insulating paper etc..
Different with the manufacture method of the paper such as crimped paper, kraft paper is owing to have employed Caustic soda and the chemically treated method of akali sulphide, and employ the raw material that lumber fibre is long, so for the fiber destruction degree in paper pulp compare low, this also ensures that the lumber fibre of study course can be retained to the full extent, thus the paper made can seem especially solid.The specific properties of kraft paper and state also determine its uniqueness as paper skill material.Kraft paper can be processed to machine glazing or dual light, and it is streaky to be processed to band simultaneously, and this provides multiple selection when just carrying out relevant paper skill making for us.Add the strength ratio of kraft paper compared with height, so seldom there will be the situation that manufacturing process heifer paper is torn, and the pulling force in length and breadth of kraft paper all compare strong, so being extensively applied in the paper skill design of conceptualization.
Although kraft paper has good tearing toughness, but existing kraft paper is not fee from the common fault that paper is inflammable, and storage and use for kraft paper bring restriction, and the anti-flammability therefore improving kraft paper has using value very much.
Summary of the invention
Goal of the invention: the preparation method that it is an object of the invention to provide a kind of flame retardant type kraft paper, prepared kraft paper has good tensile strength, bursting strength, folding strength and fire resistance.
Technical scheme:
The preparation method of a kind of flame retardant type kraft paper, comprises the steps:
(1), by weight, kp softwood pulp 15～30 parts, epoxy resin 5～10 parts, bamboo fibre 3～5 parts, polyvinyl alcohol 3～6 parts, 5～10 parts of mix homogeneously of paraffin oil, heating pressurization will do not floated, then with alkali liquid washing, dry, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed21～5 part of powder, 0.1～0.5 part of surfactant mix with aqueous slkali 1～5 part, and magnetic agitation is put in autoclave, sealed reactor, carries out hydro-thermal reaction；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 2～4 parts and 2～4 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
In step (1), the pressure of described heating pressurization is 120～160kPa, and temperature is 160～180 DEG C.
In step (2), the concentration of described aqueous slkali is 1～5M.
In step (2), the temperature of described hydro-thermal reaction is 180～240 DEG C, reacts 12～24h.
In step (3), add volume is solid material 5～10 times of industry water.
Beneficial effect
Compared with prior art, the kraft paper that the present invention prepares, maintaining on the basis of good tensile strength and bursting strength, substantially increases folding strength and the fire resistance of kraft paper, and range of application is more extensive.
Detailed description of the invention
Embodiment 1
The preparation method of a kind of flame retardant type kraft paper, comprises the steps:
(1), by weight, kp softwood pulp 15 parts, epoxy resin 5 parts, bamboo fibre 3 parts, polyvinyl alcohol 3 parts, 5 parts of mix homogeneously of paraffin oil will do not floated, heating pressurization, the pressure of heating pressurization is 120kPa, temperature is 160 DEG C, then with alkali liquid washing, dries, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed21 part of powder, 0.1 part of surfactant mix with aqueous slkali 1 part, and magnetic agitation is put in autoclave, sealed reactor, hydro-thermal reaction 12h at 180 DEG C；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 2 parts and 2 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Embodiment 2
The preparation method of a kind of flame retardant type kraft paper, comprises the steps:
(1), by weight, kp softwood pulp 18 parts, epoxy resin 6 parts, bamboo fibre 3 parts, polyvinyl alcohol 4 parts, 6 parts of mix homogeneously of paraffin oil will do not floated, heating pressurization, the pressure of heating pressurization is 130kPa, temperature is 165 DEG C, then with alkali liquid washing, dries, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed22 parts of powder, 0.2 part of surfactant mix with aqueous slkali 2 parts, and magnetic agitation is put in autoclave, sealed reactor, hydro-thermal reaction 15h at 190 DEG C；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 3 parts and 3 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Embodiment 3
The preparation method of a kind of flame retardant type kraft paper, comprises the steps:
(1), by weight, kp softwood pulp 22 parts, epoxy resin 8 parts, bamboo fibre 4 parts, polyvinyl alcohol 5 parts, 7 parts of mix homogeneously of paraffin oil will do not floated, heating pressurization, the pressure of heating pressurization is 140kPa, temperature is 170 DEG C, then with alkali liquid washing, dries, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed23 parts of powder, 0.3 part of surfactant mix with aqueous slkali 3 parts, and magnetic agitation is put in autoclave, sealed reactor, hydro-thermal reaction 18h at 200 DEG C；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 3 parts and 3 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Embodiment 4
The preparation method of a kind of flame retardant type kraft paper, comprises the steps:
(1), by weight, kp softwood pulp 26 parts, epoxy resin 9 parts, bamboo fibre 5 parts, polyvinyl alcohol 5 parts, 9 parts of mix homogeneously of paraffin oil will do not floated, heating pressurization, the pressure of heating pressurization is 150kPa, temperature is 175 DEG C, then with alkali liquid washing, dries, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed24 parts of powder, 0.4 part of surfactant mix with aqueous slkali 4 parts, and magnetic agitation is put in autoclave, sealed reactor, hydro-thermal reaction 22h at 220 DEG C；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 4 parts and 4 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Embodiment 5
The preparation method of a kind of flame retardant type kraft paper, comprises the steps:
(1), by weight, kp softwood pulp 30 parts, epoxy resin 10 parts, bamboo fibre 5 parts, polyvinyl alcohol 6 parts, 10 parts of mix homogeneously of paraffin oil will do not floated, heating pressurization, the pressure of heating pressurization is 160kPa, temperature is 180 DEG C, then with alkali liquid washing, dries, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed25 parts of powder, 0.5 part of surfactant mix with aqueous slkali 5 parts, and magnetic agitation is put in autoclave, sealed reactor, hydro-thermal reaction 24h at 240 DEG C；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 4 parts and 4 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
Embodiment 1～5 and commercially available kraft paper are carried out performance test, according to GB/T12914-1991, GB/T454-2002, GB/T457-2008 measures the tensile strength of pattern, bursting strength, folding strength respectively, measure the anti-flammability of pattern according to ASTMD777-97 (2002), result is as shown in table 1.
Table 1 performance test results
Project Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Commercially available kraft paper
Average thickness (mm) 0.35 0.35 0.34 0.35 0.36 0.36
Tensile strength (g/cm3) 109 110 109 111 108 110
Bursting strength (KPa) 189 191 192 186 188 195
Folding strength (secondary) 58 62 64 57 55 43
Char length (mm) 68 75 87 85 62 120
After flame time (s) 2 3 3 2 1 5
As can be seen from the above table, compared with commercially available kraft paper, kraft paper tensile strength that the present invention prepares and bursting strength all with commercially available kraft paper without significant difference, but, the kraft paper that the present invention prepares but has higher folding strength and fire resistance, and range of application is more extensive.

Claims (5)

1. the preparation method of a flame retardant type kraft paper, it is characterised in that comprise the steps:
(1), by weight, kp softwood pulp 15 ~ 30 parts, epoxy resin 5 ~ 10 parts, bamboo fibre 3 ~ 5 parts, polyvinyl alcohol 3 ~ 6 parts, 5 ~ 10 parts of mix homogeneously of paraffin oil, heating pressurization will do not floated, then with alkali liquid washing, dry, obtain mixing wood pulp, standby；
(2), by weight, TiO is weighed21 ~ 5 part of powder, 0.1 ~ 0.5 part of surfactant mix with aqueous slkali 1 ~ 5 part, and magnetic agitation is put in autoclave, sealed reactor, carries out hydro-thermal reaction；Autoclave is naturally cooled to room temperature, and centrifugal, washing is dry, obtains TiO2Nano wire；
(3), the TiO that mixing wood pulp prepared for step (1), step (2) are prepared2Nano wire, Pulvis Talci 2 ~ 4 parts and 2 ~ 4 parts of surfactant are rendered in pulping pond, and add industry water in pulping pond, and deliver to fiberizer after being uniformly mixed, and become to be uniformly dispersed through fiberizer, and it is stand-by to be transported in tower；
(4) slurry completed in tower is transported to paper machine, sequentially passes through sizing process, dehydration procedure, drying process, squeezing process and press polish operation.
2. the preparation method of a kind of flame retardant type kraft paper according to claim 1, it is characterised in that in step (1), the pressure of described heating pressurization is 120 ~ 160kPa, and temperature is 160 ~ 180 DEG C.
3. the preparation method of a kind of flame retardant type kraft paper according to claim 1, it is characterised in that in step (2), the concentration of described aqueous slkali is 1 ~ 5M.
4. the preparation method of a kind of flame retardant type kraft paper according to claim 1, it is characterised in that in step (2), the temperature of described hydro-thermal reaction is 180 ~ 240 DEG C, reacts 12 ~ 24h.
5. the preparation method of a kind of flame retardant type kraft paper according to claim 1, it is characterised in that in step (3), adds volume is solid material 5 ~ 10 times of industry water.
CN201610200769.7A 2016-04-01 2016-04-01 Preparation method of flame-retardant kraft paper Pending CN105755889A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112391504A (en) * 2019-08-14 2021-02-23 乌拉特中旗达兴商贸有限公司 Raw sheepskin papermaking method and application thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1260018A (en) * 1997-06-12 2000-07-12 温泽技术有限公司 Method of making lignocellulosic board
CN104001504A (en) * 2014-05-13 2014-08-27 河海大学 Preparation method for silver and graphene co-modified TiO2 nanowire and application of silver and graphene co-modified TiO2 nanowire in photocatalytic degradation of pollutants in waste water
CN104499342A (en) * 2014-11-25 2015-04-08 南通新世纪机电有限公司 Waterproof kraft paper manufacturing process
CN104947513A (en) * 2015-06-09 2015-09-30 铜陵华洋特种线材有限责任公司 Preparation method of fire-retardant high-voltage cable paper
KR20150122495A (en) * 2014-04-23 2015-11-02 마준식 Manufacturing Method of Decorative Board and that's Decorative Board
CN105038130A (en) * 2015-07-31 2015-11-11 苏州天健竹业科技有限公司 Preparation method of light composite for bicycle wheel frame

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1260018A (en) * 1997-06-12 2000-07-12 温泽技术有限公司 Method of making lignocellulosic board
KR20150122495A (en) * 2014-04-23 2015-11-02 마준식 Manufacturing Method of Decorative Board and that's Decorative Board
CN104001504A (en) * 2014-05-13 2014-08-27 河海大学 Preparation method for silver and graphene co-modified TiO2 nanowire and application of silver and graphene co-modified TiO2 nanowire in photocatalytic degradation of pollutants in waste water
CN104499342A (en) * 2014-11-25 2015-04-08 南通新世纪机电有限公司 Waterproof kraft paper manufacturing process
CN104947513A (en) * 2015-06-09 2015-09-30 铜陵华洋特种线材有限责任公司 Preparation method of fire-retardant high-voltage cable paper
CN105038130A (en) * 2015-07-31 2015-11-11 苏州天健竹业科技有限公司 Preparation method of light composite for bicycle wheel frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112391504A (en) * 2019-08-14 2021-02-23 乌拉特中旗达兴商贸有限公司 Raw sheepskin papermaking method and application thereof

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