CN115011133B - Heating paper suitable for heating ceramic tiles and preparation method thereof - Google Patents
Heating paper suitable for heating ceramic tiles and preparation method thereof Download PDFInfo
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- CN115011133B CN115011133B CN202210600258.XA CN202210600258A CN115011133B CN 115011133 B CN115011133 B CN 115011133B CN 202210600258 A CN202210600258 A CN 202210600258A CN 115011133 B CN115011133 B CN 115011133B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 93
- 239000000919 ceramic Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 169
- 239000004917 carbon fiber Substances 0.000 claims abstract description 169
- 239000002002 slurry Substances 0.000 claims abstract description 129
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000000835 fiber Substances 0.000 claims abstract description 51
- 239000003365 glass fiber Substances 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 22
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 17
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 17
- 239000006185 dispersion Substances 0.000 claims abstract description 17
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000001450 anions Chemical class 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- 239000000375 suspending agent Substances 0.000 claims abstract description 13
- 238000009849 vacuum degassing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 239000013530 defoamer Substances 0.000 claims abstract description 3
- 239000002904 solvent Substances 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 230000005684 electric field Effects 0.000 claims description 23
- 125000000129 anionic group Chemical group 0.000 claims description 18
- 238000005266 casting Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 229920002401 polyacrylamide Polymers 0.000 claims description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 12
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 239000002518 antifoaming agent Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000010009 beating Methods 0.000 claims description 7
- 239000012153 distilled water Substances 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- RAJUSMULYYBNSJ-UHFFFAOYSA-N prop-1-ene-1-sulfonic acid Chemical compound CC=CS(O)(=O)=O RAJUSMULYYBNSJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- FKYVVIFYRMLGQY-UHFFFAOYSA-N 2-(2-butylphenoxy)carbonylbenzoic acid Chemical compound C(CCC)C1=C(C=CC=C1)OC(=O)C=1C(=CC=CC1)C(=O)O FKYVVIFYRMLGQY-UHFFFAOYSA-N 0.000 claims description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- -1 polyoxyethylene Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- HORIEOQXBKUKGQ-UHFFFAOYSA-N bis(7-methyloctyl) cyclohexane-1,2-dicarboxylate Chemical compound CC(C)CCCCCCOC(=O)C1CCCCC1C(=O)OCCCCCCC(C)C HORIEOQXBKUKGQ-UHFFFAOYSA-N 0.000 claims 1
- 239000002270 dispersing agent Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 239000011449 brick Substances 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- HRELNAWNYHNHHO-UHFFFAOYSA-N bis(7-methyloctyl) benzene-1,2-dicarboxylate cyclohexane Chemical compound C1CCCCC1.C(CCCCCC(C)C)OC(C=1C(C(=O)OCCCCCCC(C)C)=CC=CC1)=O HRELNAWNYHNHHO-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RXDDZPRSFAQJOC-UHFFFAOYSA-N butylbenzene;phthalic acid Chemical compound CCCCC1=CC=CC=C1.OC(=O)C1=CC=CC=C1C(O)=O RXDDZPRSFAQJOC-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- KJAMZCVTJDTESW-UHFFFAOYSA-N tiracizine Chemical compound C1CC2=CC=CC=C2N(C(=O)CN(C)C)C2=CC(NC(=O)OCC)=CC=C21 KJAMZCVTJDTESW-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
- H05B3/145—Carbon only, e.g. carbon black, graphite
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/24—Homopolymers or copolymers of amides or imides
- C08J2433/26—Homopolymers or copolymers of acrylamide or methacrylamide
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- C08J2493/00—Characterised by the use of natural resins; Derivatives thereof
- C08J2493/04—Rosin
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
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- C08K7/06—Elements
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The invention discloses heating paper suitable for heating ceramic tiles, which comprises the following raw materials in parts by weight: 10-40 parts of long cut carbon fiber, 5-10 parts of short cut carbon fiber, 30-40 parts of plant fiber, 20-30 parts of glass fiber, 10-15 parts of solvent, 1-2 parts of dispersing agent, 2-5 parts of plasticizer, 0.2-0.4 part of lubricant, 3-5 parts of suspending agent, 0.1-0.5 part of defoamer, 3-6 parts of adhesive and 0.5-0.8 part of anion dispersion rosin size, and is prepared by preparing basic slurry, vacuum degassing the basic slurry, preparing long cut carbon fiber slurry, preparing conductive slurry and drying. The heating paper prepared by the invention not only ensures heating power, but also achieves the purposes of uniform and stable heating and long service life.
Description
Technical Field
The invention relates to the technical field of heating paper, in particular to heating paper suitable for heating ceramic tiles and a preparation method thereof.
Background
The heat-generating tile is a ceramic tile capable of heating by adding a heat-generating layer, and the heat-generating layer of the heat-generating tile sold on the market is generally a heat-generating cable or a heat-generating film.
The carbon fiber is a high-performance fiber, has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, and can be compounded with plant fibers to prepare the heating paper with electric conduction performance. The common conductive paper on the market has the performances of static electricity resistance and strong ageing resistance, can meet the basic heating requirement, but has the problems of uneven heating, short service life and the like, so that the use requirement of a humid environment of a heating ceramic tile buried under the ground for a long time is difficult to meet.
Chinese patent CN201911241768 discloses a heating film and a preparation method, a device using the heating film and a preparation method. The patent adopts the effective proportion of anion, graphene, carbon fiber and other material synthesis, film formation, manufacturing and the like to obtain the heating film which basically can meet the heating requirement, but the patent schematic diagram 2 shows that although the carbon fiber substrate slurry is activated and modified to obtain the carbon fiber with more uniform distribution, the carbon fiber has more junction points, and when the heating film is continuously electrified, the disordered internal structure can cause too high current load of the junction points, overload is easy to occur, breakdown and leakage occur, and the problems of unstable heating, short service life, potential safety hazard and the like are caused in the use process.
Therefore, in order to meet the daily life demands of people on heating tiles, it is highly required to develop a heating paper suitable for the heating tiles and a preparation method thereof.
Disclosure of Invention
In order to overcome the defects in the prior art, a first object of the invention is to provide heating paper suitable for heating ceramic tiles;
the second object of the invention is to provide a method for preparing heating paper suitable for heating ceramic tiles;
the technical scheme adopted for solving the technical problems is as follows:
the heating paper suitable for the heating ceramic tile comprises the following raw materials in parts by weight: 10-40 parts of long cut carbon fiber, 5-10 parts of short cut carbon fiber, 30-40 parts of plant fiber, 20-30 parts of glass fiber, 1-2 parts of dispersing agent, 2-5 parts of plasticizer, 0.2-0.4 part of lubricant, 3-5 parts of suspending agent, 0.1-0.5 part of defoaming agent, 3-6 parts of adhesive and 0.5-0.8 part of anion dispersion rosin size;
further, the plasticizer comprises any one or more of cyclohexane 1, 2-diisononyl phthalate, polyethylene glycol and butylbenzene phthalate; the plasticizer is added, so that the softness of the fiber slurry can be effectively improved, and finally formed heating paper can be randomly cut and folded according to the use requirement;
further, the lubricant is any one or two of alkylphenol ethoxylates and fatty acid polyoxyethylene esters; the lubricant is added, so that the conductive paste can flow smoothly on the film carrier;
further, the suspending agent comprises propenyl sulfonic acid; the suspension agent is added, so that the suspension property of the fibers in the slurry can be effectively improved, the aggregation of the fibers is reduced, and the fibers are uniformly distributed;
further, the defoamer comprises any one or two of n-butanol and ethylene glycol; adding a defoaming agent, reducing bubbles in the slurry, improving the quality of heating paper, and ensuring no break points among carbon fibers;
further, the adhesive comprises any one or two of polyvinyl alcohol and urethane; the adhesive is added, so that the formability of the heating paper is enhanced, and the tensile strength of the heating paper is improved;
further, the long cutThe carbon fiber and the chopped carbon fiber are obtained by cutting the same type of carbon fiber with single continuity; the length of the long cut carbon fiber is 10-20 mm, and the length of the short cut carbon fiber is 0.1-0.5 mm; the same type of carbon fiber with single continuity has the physical properties that: the diameter is 5-30 mu m, the tensile strength is 1200-5000 MPa, the elastic modulus is 200-400 MPa, and the density is 0.10-0.40 g/cm 3 The thermal expansion coefficient is less than or equal to 0.024, and the thermal shock resistance is 0.2-0.6 MPa;
the carbon fiber mainly comprises carbon elements, has the characteristics of high temperature resistance, friction resistance, electric conduction, heat conduction, corrosion resistance and the like, is fibrous and soft in appearance, and can be processed into various fabrics; plant fiber and glass fiber; plant fibers are extremely water-absorbent and have high water absorption in moist air or immersed in water due to their special multi-layer multi-scale internal structure and inherent hydrophilic chemical components; glass fiber is an inorganic nonmetallic material with excellent performance, and has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, but has the defects of brittleness and poor wear resistance;
in the invention, the carbon fibers can be well connected by adding the plant fibers because the plant fibers have stronger wrapping property; the plant fiber has stronger toughness and large pulling force, and can be mixed with the glass fiber to reduce the brittleness of the glass fiber integrally and ensure that the heating paper is not easy to tear. In addition, the plant fiber and the glass fiber are used in a combined mode, the glass fiber basically does not absorb water, and the water absorption of the heating paper can be reduced.
Preferably, the feeding amount of the long cut carbon fiber and the short cut carbon fiber is calculated according to the weight ratio, wherein the feeding amount of the long cut carbon fiber to the short cut carbon fiber is calculated as 2-4:1. In the heating paper, when the long cut carbon fibers are short cut carbon fibers=2-4:1, most of the carbon fibers in the heating paper can be ensured to be distributed into long cut carbon fibers, and meanwhile, the long cut carbon fibers play a role of a bridge through a certain amount of short cut carbon fibers.
Further, the dispersing agent comprises sodium hydroxyethyl cellulose and anionic polyacrylamide; the chopped carbon fiber monofilaments have small diameter and high surface energy, and under the action of Van der Waals force, in the preparation of the mixed fiber slurry containing the chopped carbon fibers, the plant fibers and the glass fibers, the chopped carbon fibers, the plant fibers and the glass fibers are easy to agglomerate, and the chopped carbon fibers are easy to deposit; in the mixed fiber slurry, the hydroxypropyl methylcellulose contains more hydroxyl polar groups, so that the hydroxypropyl methylcellulose is more soluble in water and can form hydrogen bonds with polar groups on the surface of the chopped carbon fiber or interact with the polar groups through Van der Waals force, the hydrophilicity and wettability of the chopped carbon fiber are increased, the chopped carbon fiber is in a stable dispersion state, and the phenomena of deposition and agglomeration are not easy to occur;
in the process of preparing the long cut carbon fiber slurry, negative charges on the surfaces of the long cut carbon fibers can be increased by adding the anionic polyacrylamide, so that repulsive forces among the long cut carbon fibers, the long cut carbon fibers and plant fibers and among the long cut carbon fibers and glass fibers are increased, and the long cut carbon fibers are ensured to have dispersibility to a certain extent;
in addition, anion dispersion rosin size is applied to improve permeation resistance of the heating paper to water and liquid, prevent diffusion and permeation of water quality liquid, and ensure that the prepared heating paper can be used in a humid environment for a long time;
in addition, the invention also provides a preparation method of the heating paper suitable for the heating ceramic tile, which comprises the following steps:
s1, preparing basic slurry
Preparing materials according to parts by weight; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding hydroxyethyl cellulose sodium and anion dispersion rosin size into the SR mixed fiber slurry, and oscillating for 0.5-1h at room temperature for later use;
mixing a plasticizer, a lubricant, a suspending agent and a proper amount of water, adding the mixed fiber slurry after oscillation, and adding a binder to mix and grind for 0.5-1h to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the basic slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 0.5-1h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a casting paper machine hopper;
s3, preparing long cut carbon fiber slurry
Adding long cut carbon fiber and anionic polyacrylamide into distilled water with the temperature of 37-39 ℃ serving as a water phase, and stirring for 20min to obtain long cut carbon fiber slurry;
s4, preparing conductive paste
Transferring the basic slurry flowing out from the lower part of a hopper of a casting paper machine onto a movable film carrier, arranging a carbon fiber slurry sprayer at a position 150-200 mm away from the upper part of the running position of the film carrier, and arranging a vertical electric field between the movable film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, entering a drying chamber after being inclined, and drying at 75-85 ℃ for 70-80 min to obtain the heating paper.
Further, in the step S5, a doctor is provided on the moving film carrier, and the thickness of the slurry to be dried is controlled to be 0.1-0.15 mm;
further, in the step S5, an included angle between the slope and the ground is 30-40 °; the distribution directivity of the long cut carbon fibers in the conductive paste can be more definite, so that fewer intersection points are generated.
Further, in the step S4, the strength of the vertical electric field is 1-5 kV/cm, and the long carbon fibers are easier to be distributed in parallel in the basic slurry under the action of the vertical electric field.
The heating paper prepared by the invention is applied to heating tiles, is used as heating paper, and is arranged below a tile substrate to play a role in conducting heat.
The beneficial effects of the invention are as follows:
the heating paper prepared by the invention has the advantages that most of the long cut carbon fibers in the interior are arranged in a longitudinal parallel manner, the long cut carbon fibers in the three-dimensional space are basically in a parallel state, the cross joints are few, and the short cut carbon fibers, the plant fibers and the glass fibers are dispersed among the parallel long cut carbon fibers after being compounded; the composite fibers are connected with the long carbon fibers which are distributed in parallel to form a net structure, so that the bridge function of connecting the long carbon fibers which are distributed in parallel is achieved; when the current is conducted, the current generally passes through the long cut carbon fibers which are distributed in parallel, and even if the joint is disconnected, the current can pass through the short cut carbon fibers to the other long cut carbon fibers. Therefore, the heating paper prepared by the invention can conduct electricity and ensure heating power, and can realize the purposes of uniform and stable heating and long service life of the heating paper.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a three-dimensional microstructure of a heat-generating paper according to the present invention;
FIG. 2 is a schematic three-dimensional structure of the heat-generating paper according to the present invention;
wherein: 1. plant fibers; 2. glass fibers; 3. cutting carbon fibers; 4. long cut carbon fiber
Detailed Description
The invention will be further illustrated by the following examples, which are not intended to limit the scope of the invention, in order to facilitate the understanding of those skilled in the art.
The carbon fiber in the examples is a carbon fiber having single continuity, and the physical properties satisfy: the diameter is 5-30 mu m, the tensile strength is 1200-5000 MPa, the elastic modulus is 200-400 MPa, and the density is 0.10-0.40 g/cm 3 The thermal expansion coefficient is less than or equal to 0.024, and the thermal shock resistance is 0.2-0.6 MPa;
wherein: the long cut carbon fibers and the short cut carbon fibers are obtained by cutting the carbon fibers;
wherein: the physical properties of the carbon fiber of example 1 were: the diameter is 5 mu m, the tensile strength is 1200MPa, the elastic modulus is 200MPa, and the density is 0.10g/cm 3 A thermal expansion coefficient of 0.018 and a thermal shock resistance of 0.2MPa;
the physical properties of the carbon fiber of example 2 were: the diameter is 30 mu m, the tensile strength is 5000MPa, the elastic modulus is 400MPa, and the density is 0.40g/cm 3 A thermal expansion coefficient of 0.015 and a thermal shock resistance of 0.6MPa;
the physical properties of the carbon fiber of example 3 were: the diameter is 15 mu m, the tensile strength is 2100MPa, the elastic modulus is 300MPa, and the density is 0.25g/cm 3 The thermal expansion coefficient is less than or equal to 0.024, and the thermal shock resistance is 0.4MPa;
the physical properties of the carbon fiber of example 4 were: the diameter is 10 mu m, the tensile strength is 3300MPa, the elastic modulus is 300MPa, and the density is 0.35g/cm 3 The thermal expansion coefficient is less than or equal to 0.024, and the thermal shock resistance is 0.5MPa;
fig. 1 is a three-dimensional microstructure of the heat-generating paper according to the present invention, wherein black lines in the drawing are long cut carbon fibers connected to each other in a line.
As shown in fig. 2, the three-dimensional structure of the heating paper is schematically shown, most of the long carbon fibers 4 in the heating paper are arranged in a longitudinal parallel manner, the long carbon fibers 4 in the three-dimensional space are basically in a parallel state, the cross joints are few, and the short carbon fibers 3, the plant fibers 1 and the glass fibers 2 are dispersed among the parallel long carbon fibers 4 after being compounded; the composite fibers are connected with the long cut carbon fibers 4 which are distributed in parallel to form a net structure, so that the bridge function of connecting the long cut carbon fibers 4 which are distributed in parallel is achieved.
Example 1
The heating paper suitable for the heating ceramic tile comprises the following raw materials in parts by weight: 10 parts of long cut carbon fibers, 5 parts of short cut carbon fibers, 30 parts of plant fibers and 20 parts of glass fibers;
0.5 part of hydroxyethyl cellulose sodium, 0.5 part of anionic polyacrylamide, 2 parts of cyclohexane 1, 2-diisononyl phthalate, 0.2 part of alkylphenol ethoxylate, 3 parts of propenyl sulfonic acid, 0.1 part of n-butanol, 3 parts of polyvinyl alcohol and 0.5 part of anionic dispersion rosin size;
the preparation method of the heating paper suitable for the heating ceramic tile comprises the following steps of:
s1, preparing basic slurry
According to parts by weightPreparing materials; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding hydroxyethyl cellulose sodium and anion dispersion rosin size into the SR mixed fiber slurry, and oscillating for 0.5h at room temperature for later use;
mixing a plasticizer, a lubricant, a suspending agent and water (1 time of the weight of the chopped carbon fibers), adding the mixed fiber slurry after oscillation, and adding a binder to carry out mixed grinding for 0.5h to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the base slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 0.5h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a hopper of a casting paper machine;
s3, preparing long cut carbon fiber slurry
Taking distilled water (1 time of the weight of the long cut carbon fiber slurry) at 37 ℃ as a water phase, adding the long cut carbon fiber and the anionic polyacrylamide, and stirring for 20min to obtain the long cut carbon fiber slurry;
s4, preparing conductive paste
Controlling the basic slurry to flow out from the lower part of a hopper of a casting paper machine to a mobile film carrier with the width of 600mm and the moving speed of 800mm/s, wherein the lower part of the hopper of the casting paper machine is 5-7 mm away from the mobile film carrier, a carbon fiber slurry sprayer with the spraying speed of 3g/s is arranged at the position 150mm away from the upper part of the running position of the film carrier, and a vertical electric field with the electric field strength of 1kV/cm is additionally arranged between the mobile film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, wherein a scraper is arranged on the movable film carrier, the thickness of the paste is 0.1mm, the plasma processed by the scraper enters a drying chamber after passing through a slope with an included angle of 30 degrees with the ground, and the drying chamber is dried for 70min at 75 ℃ to obtain heating paper with the width of 600mm and the thickness of 0.07mm, and the paper is coiled for standby.
Example 2
The heating paper suitable for the heating ceramic tile comprises the following raw materials in parts by weight: 40 parts of long cut carbon fibers, 10 parts of short cut carbon fibers, 40 parts of plant fibers and 30 parts of glass fibers;
0.3 part of fatty acid polyoxyethylene ester, 4 parts of propenyl sulfonic acid, 0.5 part of ethylene glycol, 6 parts of carbamic acid ethyl ester and 0.8 part of anion dispersion rosin size;
the preparation method of the heating paper suitable for the heating ceramic tile comprises the following steps of:
s1, preparing basic slurry
Preparing materials according to parts by weight; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding hydroxyethyl cellulose sodium and anion dispersion rosin size into the SR mixed fiber slurry, and oscillating for 1h at room temperature for later use;
mixing a plasticizer, a lubricant, a suspending agent and water (1 time of the weight of the chopped carbon fibers), adding the mixed fiber slurry after oscillation, and adding a binder to carry out mixed grinding for 1 hour to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the basic slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 1h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a hopper of a casting paper machine;
s3, preparing long cut carbon fiber slurry
Taking distilled water (1 time of the weight of the long cut carbon fiber slurry) at 39 ℃ as a water phase, adding the long cut carbon fiber and the anionic polyacrylamide, and stirring for 20min to obtain the long cut carbon fiber slurry;
s4, preparing conductive paste
Controlling the basic slurry to flow out from the lower part of a hopper of a casting paper machine to a mobile film carrier with the width of 900mm and the moving speed of 1000mm/s, wherein the lower part of the hopper of the casting paper machine is 5-7 mm away from the mobile film carrier, a carbon fiber slurry sprayer with the spraying speed of 19g/s is arranged at the position with the height of 200mm away from the upper part of the running position of the film carrier, and a vertical electric field with the electric field strength of 5kV/cm is additionally arranged between the mobile film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, wherein a scraper is arranged on the movable film carrier, the thickness of the paste is 0.15mm, the plasma processed by the scraper enters a drying chamber after passing through a slope with an included angle of 40 degrees with the ground, and the drying chamber is dried for 80 minutes at 85 ℃ to obtain heating paper with the width of 900mm and the thickness of 0.12mm, and the paper is coiled for standby.
Example 3
The heating paper suitable for the heating ceramic tile comprises the following raw materials in parts by weight: 24 parts of long cut carbon fibers, 8 parts of short cut carbon fibers, 35 parts of plant fibers and 25 parts of glass fibers;
0.8 part of hydroxyethyl cellulose sodium, 0.8 part of anionic polyacrylamide, 4 parts of butylphenyl phthalate, 0.3 part of alkylphenol ethoxylates, 4 parts of propenyl sulfonic acid, 0.3 part of n-butanol, 4 parts of polyvinyl alcohol and 0.7 part of anionic dispersion rosin size;
the preparation method of the heating paper suitable for the heating ceramic tile comprises the following steps of:
s1, preparing basic slurry
Preparing materials according to parts by weight; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding hydroxyethyl cellulose sodium and anion dispersion rosin size into the SR mixed fiber slurry, and oscillating for 0.8h at room temperature for later use;
mixing a plasticizer, a lubricant, a suspending agent and water (1 time of the weight of the chopped carbon fibers), adding the mixed fiber slurry after oscillation, and adding a binder to carry out mixed grinding for 0.7h to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the base slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 0.7h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a hopper of a casting paper machine;
s3, preparing long cut carbon fiber slurry
Taking distilled water (1 time of the weight of the long cut carbon fiber slurry) at 38 ℃ as a water phase, adding the long cut carbon fiber and the anionic polyacrylamide, and stirring for 20min to obtain the long cut carbon fiber slurry;
s4, preparing conductive paste
Controlling the basic slurry to flow out from the lower part of a hopper of a casting paper machine to a mobile film carrier with the width of 750mm and the moving speed of 900mm/s, wherein the lower part of the hopper of the casting paper machine is 5-7 mm away from the mobile film carrier, a carbon fiber slurry sprayer with the spraying speed of 5g/s is arranged at the position which is 180mm away from the upper part of the running position of the film carrier, and a vertical electric field with the electric field strength of 3kV/cm is additionally arranged between the mobile film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, wherein a scraper is arranged on the movable film carrier, the thickness of the paste is 0.13mm, the plasma processed by the scraper enters a drying chamber after passing through a slope with an included angle of 35 DEG with the ground, and the drying chamber is dried for 75min at 80 ℃ to obtain heating paper with the width of 750mm and the thickness of 0.10mm, and the paper is coiled for standby.
Example 4
The heating paper suitable for the heating ceramic tile comprises the following raw materials in parts by weight: 18 parts of long cut carbon fibers, 5 parts of short cut carbon fibers, 31 parts of plant fibers and 29 parts of glass fibers;
0.7 part of hydroxyethyl cellulose sodium, 0.9 part of anionic polyacrylamide, 4 parts of butylphenyl phthalate, 0.28 part of alkylphenol ethoxylates, 3.5 parts of propenyl sulfonic acid, 0.4 part of ethylene glycol, 5 parts of carbamic acid and 0.7 part of anionic dispersion rosin size;
the preparation method of the heating paper suitable for the heating ceramic tile comprises the following steps of:
s1, preparing basic slurry
Preparing materials according to parts by weight; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding hydroxyethyl cellulose sodium and anion dispersion rosin size into the SR mixed fiber slurry, and oscillating for 0.6h at room temperature for later use;
mixing a plasticizer, a lubricant, a suspending agent and water (1 time of the weight of the chopped carbon fibers), adding the mixed fiber slurry after oscillation, and adding a binder to mix and grind for 0.9h to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the base slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 0.8h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a hopper of a casting paper machine;
s3, preparing long cut carbon fiber slurry
Taking distilled water (1 time of the weight of the long cut carbon fiber slurry) at 39 ℃ as a water phase, adding the long cut carbon fiber and the anionic polyacrylamide, and stirring for 20min to obtain the long cut carbon fiber slurry;
s4, preparing conductive paste
Controlling the basic slurry to flow out from the lower part of a hopper of a casting paper machine to a mobile film carrier with the width of 800mm and the moving speed of 800mm/s, wherein the lower part of the hopper of the casting paper machine is 6mm away from the mobile film carrier, a carbon fiber slurry sprayer with the spraying speed of 15g/s is arranged at the position which is 180mm away from the upper part of the running position of the film carrier, and a vertical electric field with the electric field strength of 4kV/cm is additionally arranged between the mobile film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, wherein a scraper is arranged on the movable film carrier, the thickness of the paste is 0.14mm, the plasma processed by the scraper enters a drying chamber after passing through a slope with an included angle of 37 degrees with the ground, and the drying chamber is dried for 78min at 79 ℃ to obtain heating paper with the width of 850mm and the thickness of 0.09mm, and the paper is coiled for standby.
Comparative example 1
No electric field was applied, and the other conditions were the same as in example 1;
comparative example 2
The amount of the short cut carbon fibers added in comparative example 2 was the total amount of the short cut carbon fibers and the long cut carbon fibers added in example 1, and the other conditions were the same as in example 1;
comparative example 3
No anionic dispersion rosin size was added, the other conditions were the same as in example 1;
performance test:
the prepared heating paper is compounded on the back of a ceramic tile with the specification of 600 x 900mm, and the performance application test is carried out under the power supply of a 36V direct current power supply in a humid environment.
1. Temperature rise efficiency: continuously electrifying to detect the temperature of the brick surface in an ideal heat-preserving and static environment without ventilation, wherein the first 10min is more than or equal to 0.6 ℃/min at any temperature;
2. overpressure test and nominal working life test: according to the method for estimating the service life in the GB/T7287-2008 infrared radiation heater test method, continuous electrifying and heating are carried out at a voltage of 297V which is 1.35 times of rated voltage, and the power attenuation is less than or equal to 10%;
| nominal working life | Test time |
| 3000 | 36 |
| 4000 | 48 |
| 5000 | 60 |
| ... | ... |
| 10000 | 120 |
3. Heating uniformity test: and continuously electrifying to detect the temperature of the brick surface in an environment which is ideal to keep warm and still and has no air circulation. Dividing the brick surface into 6 areas averagely, measuring the temperature of the brick surface in each area, and calculating the maximum temperature difference;
4. heat stability test: and (3) covering the multi-layer heat-insulating board on and under the tile surface, measuring the highest temperature and power of the tile surface, and judging the safety of the heating tile when the heating tile is covered with an object. The thickness of the insulation board is 3cm, the number of the insulation board is the bottom layer, the number of the insulation board is two layers on the surface, the measuring points are 6 points on the brick surface at random, the highest temperature point of the brick surface and the power data are continuously recorded for 120 days, whether the power is attenuated or not is judged, and the power is recorded in the following table 1.
As can be seen from table 1, the heating papers prepared in examples 1 to 4 have a temperature rise efficiency of 1.3 to 1.5, a nominal working life of 84000 to 92000 hours, a maximum temperature difference of 0.3 to 0.6 ℃, no power attenuation, high heat conductivity, and no power attenuation under the condition of long working life;
in contrast, in comparative example 1, the heating paper obtained has a temperature rising efficiency of 1.0, a nominal working life of 48000h, a maximum temperature difference of 1.9 ℃ and a power attenuation of 0.6%, which indicates that long-cut carbon fibers cannot be well distributed in parallel under the condition that no electric field is applied, and the distribution of the long-cut fibers in the heating paper is unbalanced, so that when heating is performed, the temperature difference is too large, the temperature rising efficiency is lower, the service life is also influenced, and the power attenuation is 0.6%.
Comparative example 2, the resulting exothermic paper had a temperature rise efficiency of 0.5, a nominal working life of 45000 hours, a maximum temperature difference of 2.4 ℃, and a power decay of 1.5%; the fact that long carbon fibers are not added is indicated, when the added carbon fibers are all short carbon fibers, the short carbon fibers are large in quantity and easy to agglomerate, and the short carbon fibers are represented in heating paper as more nodes, so that a higher temperature difference is easy to exist, breakdown phenomenon can occur, the nominal service life is influenced, and power attenuation is 1.5%;
comparative example 3, the resulting exothermic paper had a temperature rise efficiency of 0.2, a nominal operating life of 21000 hours, a maximum temperature differential of 0.8 ℃, and a power decay of 10%; under the condition that anion dispersion rosin size is not added, permeation resistance of the heating paper to water and liquid is reduced, and when the heating paper works in a humid environment, water quality liquid diffusion and permeation phenomena occur, so that nominal working life and temperature rise efficiency are seriously influenced, and power attenuation is 10%.
The above embodiments are preferred embodiments of the present invention, and besides, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
Claims (9)
1. The heating paper suitable for the heating ceramic tile is characterized by comprising the following raw materials in parts by weight: 10-40 parts of long-cut carbon fibers, 5-10 parts of short-cut carbon fibers, 30-40 parts of plant fibers, 20-30 parts of glass fibers, 0.5-0.8 part of hydroxyethyl cellulose sodium, 0.5-0.9 part of anionic polyacrylamide, 2-5 parts of plasticizer, 0.2-0.4 part of lubricant, 3-5 parts of suspending agent, 0.1-0.5 part of defoaming agent, 3-6 parts of adhesive and 0.5-0.8 part of anionic dispersion rosin size;
the long cut carbon fibers and the short cut carbon fibers are the same type of carbon fibers with single continuity; the length of the long cut carbon fiber is 10-20 mm, and the length of the short cut carbon fiber is 0.1-0.5 mm; the long carbon fibers in the three-dimensional space of the heating paper are basically in a parallel state,
the number of the cross joints is small, and the chopped carbon fibers, the plant fibers and the glass fibers are dispersed among the parallel long chopped carbon fibers after being compounded;
the preparation method of the heating paper comprises the following steps:
s1, preparing basic slurry
Preparing materials according to parts by weight; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding hydroxyethyl cellulose sodium and anion dispersion rosin size into the SR mixed fiber slurry, and vibrating for 0.5-1h at room temperature for later use;
mixing a plasticizer, a lubricant, a suspending agent and a solvent, adding the mixed fiber slurry after oscillation, and adding a binder to mix and grind for 0.5-1h to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the basic slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 0.5-1h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a casting paper machine hopper;
s3, preparing long cut carbon fiber slurry
Adding long cut carbon fiber and anionic polyacrylamide into distilled water with the temperature of 37-39 ℃ serving as a water phase, and stirring for 20min to obtain long cut carbon fiber slurry;
s4, preparing conductive paste
Transferring the basic slurry flowing out from the lower part of a hopper of a casting paper machine onto a movable film carrier, arranging a carbon fiber slurry sprayer at a position 150-200 mm away from the upper part of the running position of the film carrier, and arranging a vertical electric field between the movable film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, entering a drying chamber after being inclined, and drying at 75-85 ℃ for 70-80 min to obtain the heating paper.
2. A heat generating paper suitable for use in heat generating tiles as recited in claim 1, wherein the plasticizer comprises any one or more of cyclohexane 1, 2-dicarboxylic acid diisononyl ester, polyethylene glycol, butylphenyl phthalate.
3. A heat generating paper suitable for use in heat generating tiles as claimed in claim 1, wherein the lubricant is either or both of alkylphenol ethoxylates and fatty acid polyoxyethylene esters.
4. A heat generating paper suitable for use in heat generating tiles as recited in claim 1, wherein the suspending agent comprises propenyl sulfonic acid.
5. A heat generating paper suitable for use in heat generating tiles as recited in claim 1, wherein the defoamer comprises either or both of n-butanol and ethylene glycol.
6. A heat generating paper suitable for use in heat generating tiles as recited in claim 1, wherein the binder comprises either or both of polyvinyl alcohol and urethane.
7. A method for producing a heat-generating paper suitable for use in heat-generating tiles according to any one of claims 1 to 6, comprising the steps of:
s1, preparing basic slurry
Preparing materials according to parts by weight; mixing chopped carbon fiber, glass fiber, plant fiber and proper amount of water to obtain the product with beating degree of 40-45 0 Adding sodium hydroxyethyl cellulose and anion dispersed rosin size into SR mixed fiber slurry, and oscillating at room temperature0.5-1h for standby;
mixing a plasticizer, a lubricant, a suspending agent and a solvent, adding the mixed fiber slurry after oscillation, and adding a binder to mix and grind for 0.5-1h to obtain a basic slurry with good stability and fluidity;
s2, vacuum degassing of base slurry
Putting the basic slurry prepared in the step S1 into a vacuum tank, adding a defoaming agent, stirring for 0.5-1h, sequentially passing through double screens with mesh sizes of 500 mu m and 200 mu m, and flowing into a casting paper machine hopper;
s3, preparing long cut carbon fiber slurry
Adding long cut carbon fiber and anionic polyacrylamide into distilled water with the temperature of 37-39 ℃ serving as a water phase, and stirring for 20min to obtain long cut carbon fiber slurry;
s4, preparing conductive paste
Transferring the basic slurry flowing out from the lower part of a hopper of a casting paper machine onto a movable film carrier, arranging a carbon fiber slurry sprayer at a position 150-200 mm away from the upper part of the running position of the film carrier, and arranging a vertical electric field between the movable film carrier and the carbon fiber slurry sprayer;
the long cut carbon fiber slurry falls after being sprayed by a carbon fiber slurry sprayer, and after being acted by an external electric field, the long cut carbon fiber slurry is scattered into the basic slurry on the movable film carrier to obtain conductive slurry;
s5, drying
And (3) running the conductive paste obtained in the step (S4) through a movable film carrier, entering a drying chamber after being inclined, and drying at 75-85 ℃ for 70-80 min to obtain the heating paper.
8. The method for preparing heat-generating paper suitable for heat-generating tiles as recited in claim 7, wherein in the step S5, the included angle between the slope and the ground is 30-40 °.
9. The method for preparing heat-generating paper suitable for heat-generating tiles as recited in claim 7, wherein the strength of the vertical electric field in the step S4 is 1-5 kV/cm.
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