CN116240749A - Decorative base paper and preparation method thereof - Google Patents
Decorative base paper and preparation method thereof Download PDFInfo
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- CN116240749A CN116240749A CN202211097018.9A CN202211097018A CN116240749A CN 116240749 A CN116240749 A CN 116240749A CN 202211097018 A CN202211097018 A CN 202211097018A CN 116240749 A CN116240749 A CN 116240749A
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- base paper
- decorative base
- fiber
- slurry
- pulp
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- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 73
- 239000000835 fiber Substances 0.000 claims abstract description 63
- 239000011521 glass Substances 0.000 claims abstract description 59
- 239000011324 bead Substances 0.000 claims abstract description 58
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000945 filler Substances 0.000 claims abstract description 30
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 27
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 18
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 18
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000123 paper Substances 0.000 claims description 122
- 239000003365 glass fiber Substances 0.000 claims description 42
- 239000012783 reinforcing fiber Substances 0.000 claims description 32
- 238000004537 pulping Methods 0.000 claims description 26
- 229920001131 Pulp (paper) Polymers 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 22
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 21
- 239000004917 carbon fiber Substances 0.000 claims description 21
- 244000025254 Cannabis sativa Species 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 13
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 13
- 235000009120 camo Nutrition 0.000 claims description 13
- 235000005607 chanvre indien Nutrition 0.000 claims description 13
- 239000011487 hemp Substances 0.000 claims description 13
- 239000010902 straw Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 238000010009 beating Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000003490 calendering Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 239000001038 titanium pigment Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000011121 hardwood Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 12
- 239000004952 Polyamide Substances 0.000 description 12
- 229920002401 polyacrylamide Polymers 0.000 description 12
- 229920002647 polyamide Polymers 0.000 description 12
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000007822 coupling agent Substances 0.000 description 4
- 239000011087 paperboard Substances 0.000 description 4
- 150000001343 alkyl silanes Chemical class 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 229920002522 Wood fibre Polymers 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical group [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000002025 wood fiber Substances 0.000 description 2
- 240000008564 Boehmeria nivea Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The application relates to a decorative base paper and a preparation method thereof, which relate to the field of papermaking technology, wherein the decorative base paper comprises the following raw materials in parts by weight: 85-95 parts of fiber slurry, 4-12 parts of filler and 1-3 parts of regulator; the filler comprises the following raw materials in percentage by weight: 50-60% of titanium dioxide, 15-20% of kaolin, 10-15% of alumina and 5-15% of glass beads; the particle size of the glass beads is 5-10 mu m. The addition amount of titanium dioxide is reduced in a proper amount in the filler, and aluminum oxide and glass beads are added on the basis of the addition amount, so that the covering property of the decorative base paper is enhanced. Compared with titanium dioxide, the glass beads are cheaper in price, have good dispersion fluidity in fiber slurry, and can be well dispersed in the fiber slurry to play a role in enhancing the strength and weather resistance of decorative base paper.
Description
Technical Field
The application relates to the field of papermaking technology, in particular to decorative base paper and a preparation method thereof.
Background
The decorative base paper is industrial special paper processed by a special process, and can be divided into surface layer base paper of a facing, surface layer decorative base paper, bottom layer balance base paper and other base paper, and is applied to manufacturing of artificial boards, and terminal consumption is mainly in home industries of customized furniture, floors, wooden doors and the like.
The conventional decorative base paper in the market at present is generally prepared from wood pulp and titanium pigment serving as main raw materials through printing, melamine resin dipping and other processes. The filler such as titanium dioxide is added into wood pulp to ensure that the decorative base paper has good hiding power and absorption performance, and meanwhile, the glue needs to be well absorbed in the dipping process. The decorative base paper is covered on the surface of a building material product, so that extremely high requirements are provided for the covering property of the decorative base paper, the currently common mode for improving the covering property of the decorative base paper is to increase the opacity of paper by improving the adding amount of fillers such as titanium dioxide, but when the adding amount of the fillers such as titanium dioxide is too high, the strength and weather resistance of the paper can be reduced, the absorption capacity of the paper is reduced, the paper is insufficiently impregnated, the appearance is easily affected by damp and mildew in the use process, and the quality of the product is affected by the insufficient strength.
Disclosure of Invention
Aiming at the technical problems, the application provides the decorative base paper and the preparation method thereof, and the prepared decorative base paper has high coverage and high strength and good performance.
In a first aspect, the present application provides a decorative base paper, which adopts the following technical scheme:
the decorative base paper comprises the following raw materials in parts by weight: 85-95 parts of fiber slurry, 4-12 parts of filler and 1-3 parts of regulator;
the filler comprises the following raw materials in percentage by weight: 50-60% of titanium dioxide, 15-20% of kaolin, 10-15% of alumina and 5-15% of glass beads; the particle size of the glass beads is 5-10 mu m.
By adopting the technical scheme, the filler in the decorative base paper mainly plays a role in enhancing the covering power and strength of the decorative base paper and improving the weather resistance of the decorative base paper. In the technical scheme, the addition amount of titanium dioxide in the filler is reduced in a proper amount, and aluminum oxide and glass beads are added on the basis of the addition amount of titanium dioxide to enhance the covering property of the decorative base paper. Compared with titanium dioxide, the glass beads are cheaper in price, have good dispersion fluidity in fiber slurry, and can be well dispersed in the fiber slurry to play the role of enhancing the weather resistance and strength of decorative base paper. Because the particle size of the glass beads is between 5 and 10 mu m, the glass beads are mixed with nano-grade titanium dioxide, alumina and other fillers, the titanium dioxide and the alumina are filled in gaps among the glass beads, gaps among the glass beads with larger particles are further filled, and the covering power of the decorative base paper is improved. The glass position has very stable property and low oil absorption and water absorption, and can improve the fluidity of the filled material, so that the fiber in the form of fiber slurry is more uniformly dispersed. In addition, the glass beads are pure white in overall, and have strong surface reflectivity, and the decorative base paper prepared by taking the glass beads as a filler has better surface decorative effect.
Optionally, reinforcing fibers are further added into the decorative base paper, wherein the reinforcing fibers account for 3-8wt% of the fiber slurry, and the reinforcing fibers comprise at least one of glass fibers and carbon fibers.
By adopting the technical scheme, the glass fiber and the carbon fiber are non-wood fiber materials, the glass fiber has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, and the strength and weather resistance of the decorative base paper can be effectively improved; the carbon fiber has the characteristics of high temperature resistance, friction resistance, heat conduction, corrosion resistance and the like, is very soft and very high in flexibility, and can improve the weather resistance of the decorative base paper and reduce the brittleness of the decorative base paper after being added into the decorative base paper.
Optionally, the reinforcing fiber comprises glass fiber and carbon fiber, and the mass ratio of the glass fiber to the carbon fiber is 1: (1.5-4).
By adopting the technical scheme, the glass fiber and the carbon fiber are added in a matched manner, so that the high strength of the glass fiber and the flexibility of the carbon fiber can be combined, and the mechanical strength and the bending property of the prepared decorative base paper are enhanced to a certain extent.
Optionally, the mass ratio of the glass fiber to the glass bead is 1: (0.55-1.2).
By adopting the technical scheme, in the decorative base paper, the glass beads are dispersed in the fiber slurry in a granular form, the glass fibers are dispersed in the fiber slurry in a linear structure, and the glass fibers with the linear structure are similar to the fiber slurry in shape and can be well dispersed in the fiber slurry; the glass beads have similar properties with glass fibers, and in the fiber slurry, the glass beads have higher affinity with the glass fibers, so that the auxiliary dispersing effect can be achieved. The addition amount of the glass beads and the glass fibers is limited in the range, and the strength distribution among all parts in the decorative base paper is more uniform through the dotted line matching effect between the glass beads and the glass fibers, so that the overall performance and strength of the decorative base paper are improved.
Optionally, the monofilament diameter of the reinforcing fiber is 2-10 μm and the length is 1-5 mm.
By adopting the technical scheme, the monofilament diameter of the reinforced fiber can influence the dispersion characteristic of the fiber slurry on one hand, and the surface characteristic and flatness of the prepared decorative base paper on the other hand. On the other hand, in the mixing process of the glass beads, the particle diameter of the glass beads and the monofilament diameter of the reinforcing fibers are in the same level within the range defined by the monofilament diameter of the reinforcing fibers, so that the influence of agglomeration on the strength of the decorative base paper in the mixing process can be avoided. The length of the reinforcing fiber is limited in the range, so that the uniformity of mixing and dispersing of the reinforcing fiber and the fiber slurry can be further improved, and the agglomeration of the reinforcing fiber in the mixing process is further avoided.
Optionally, the regulator is at least one of a silane coupling agent, a wet strength agent and a retention aid.
Optionally, the silane coupling agent is an aminosilane coupling agent, the wet strength agent is polyamide epichlorohydrin resin, and the retention aid is polyacrylamide.
Optionally, the fiber pulp comprises at least two of wood pulp, grass pulp and hemp pulp.
Optionally, the fiber pulp comprises 45-60% of wood pulp, 20-35% of straw pulp and 10-20% of hemp pulp.
By adopting the technical scheme, the fiber forms and properties of the wood pulp, the grass pulp and the hemp pulp are different, the fiber in the wood pulp and the grass pulp is generally shorter in length but is more brittle in texture, the fiber in the hemp pulp is longer than the fiber in the wood pulp and the grass pulp, the fiber flexibility is higher, and the fiber pulp can improve the overall strength and performance of the decorative base paper through the compounding of the wood pulp, the grass pulp and the hemp pulp.
In a second aspect, the present application provides a method for preparing a decorative base paper, which adopts the following technical scheme:
the preparation method of the decorative base paper comprises the following steps:
s1, pulping: adding water, fiber slurry, titanium pigment, alumina and kaolin into a pulper for full disintegration to prepare slurry with the mass concentration of 6.5-8.5%, wherein the water temperature for pulping is 35-40 ℃;
s2, pulping: adding the slurry obtained by pulping in the step S1 into a pulping machine for fully mixing to prepare slurry with the mass concentration of 6-8% and the beating degree of 33-35 DEG SR;
s3, proportioning: adding the slurry prepared in the step S2 into a stirrer, adding glass beads, fully stirring for 20-30 min at the rotation speed of 800-1000 rpm, adding a regulator, and continuously stirring for 5-10 min;
s4, papermaking: and (3) the sizing agent prepared in the step (S3) is fed into a net to manufacture paper, and the decorative base paper is prepared through the processes of squeezing, drying, spraying, calendaring, coiling and rewinding.
Optionally, when the decorative base paper is added with reinforcing fibers, the method comprises the following steps:
s1, pulping: adding water, fiber slurry, titanium pigment and kaolin into a pulper for full disintegration to prepare slurry with the mass concentration of 6.5-8.5%, wherein the water temperature for pulping is 35-40 ℃;
s2, pulping: adding the slurry obtained by pulping in the step S1 into a pulping machine for fully mixing to prepare slurry with the mass concentration of 6-8% and the beating degree of 33-35 DEG SR;
s3, proportioning: adding the slurry prepared in the step S2 into a stirrer, adding the reinforcing fiber, stirring for 15-20 min at 300-500 rpm, adding the glass beads for 3-5 times, fully stirring for 20-30 min at 800-1000 rpm, adding the regulator, and continuing stirring for 5-10 min;
s4, papermaking: and (3) the sizing agent prepared in the step (S3) is fed into a net to manufacture paper, and the decorative base paper is prepared through the processes of dehydration of a net part, squeezing, drying, spraying, calendaring, coiling and rewinding.
Optionally, in step S3, when the regulator includes a silane coupling agent, the method includes the following steps: firstly, mixing glass beads and a silane coupling agent, heating to 80-100 ℃, stirring and mixing for 30-60 min, cooling to normal temperature, and adding into slurry.
By adopting the technical scheme, the glass beads and the reinforcing fibers are added in the batching stage in the preparation process of the decorative base paper. The fiber pulp after pulp grinding treatment is subjected to high-speed rotary friction and extrusion by a pulp grinder membrane, the fibers in the pulp after pulp grinding are further cut off and split into filaments, the various pulps are more uniformly mixed and dispersed and are more tightly combined with each other, reinforcing fibers are added at the stage, the reinforcing fibers are similar to the fibers in the pulp in shape, and the reinforcing fibers can be fully and uniformly mixed under stirring. And after the reinforcing fiber is uniformly mixed in the fiber slurry, adding the glass beads, and further dispersing and uniformly mixing the glass beads in the fifth step of mixing the reinforcing fiber and the fiber slurry. In the subsequent paper making process, the glass beads are uniformly distributed in the decorative base paper along with the reinforcing fibers and the fiber slurry, so that the strength and other performances of the decorative base paper are enhanced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the technical scheme, the addition amount of titanium dioxide in the filler is reduced in a proper amount, and aluminum oxide and glass beads are added on the basis so as to enhance the covering property of the decorative base paper. Compared with titanium dioxide, the glass beads are cheaper in price, have good dispersion fluidity in fiber slurry, and can be well dispersed in the fiber slurry to play a role in enhancing the strength and weather resistance of decorative base paper.
2. In the technical scheme, by adding the glass fiber and/or the carbon fiber, the glass fiber and the carbon fiber are non-wood fiber materials, and the glass fiber has good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, and can effectively improve the strength and weather resistance of the decorative base paper; the carbon fiber has the characteristics of high temperature resistance, friction resistance, heat conduction, corrosion resistance and the like, is very soft and very high in flexibility, and can also improve the weather resistance of the decorative base paper and reduce the brittleness of the decorative base paper after being added into the decorative base paper.
3. The addition amount of the glass beads and the glass fibers is limited in the range, and the strength distribution among all parts in the decorative base paper is more uniform through the dotted line matching effect between the glass beads and the glass fibers, so that the overall performance and strength of the decorative base paper are improved.
Detailed Description
The present application is described in further detail below in connection with specific examples. In the following examples, no specific details are set forth, and the examples were conducted under conventional conditions or conditions recommended by the manufacturer; the raw materials used in the following examples were all commercially available from ordinary sources except for the specific descriptions.
In the following examples, except for the specific description, hardwood pulp was used as wood pulp, wheat straw pulp was used as straw pulp, and ramie pulp was used as hemp pulp; the glass beads are hollow glass beads with the wall thickness of 1-2 mu m, the silane coupling agent is amino silane coupling agent, the wet strength agent is polyamide epichlorohydrin resin, and the retention aid is polyacrylamide.
Examples
Example 1
The decorative base paper in the embodiment comprises the following components in parts by weight: 85 kg of hardwood pulp fiber slurry, 12 kg of filler and 3 kg of regulator; the filler comprises: 60wt% of titanium dioxide, 15wt% of kaolin, 10wt% of alumina and 15wt% of glass beads; the regulator comprises: 2.5 kg of polyamide epichlorohydrin resin and 0.5 kg of polyacrylamide.
The specific preparation method of the decorative base paper of the embodiment is as follows:
s1, adding water, fiber slurry, titanium dioxide, aluminum oxide and kaolin into a pulper according to a proportion, fully disintegrating, controlling the water temperature at 40+/-5 ℃ and preparing slurry with the mass percent concentration of 6.5%;
s2, transferring the slurry prepared in the step S1 into a pulping machine for fully pulping to prepare slurry with the mass percent concentration of 6% and the beating degree of 33 DEG SR;
s3, transferring the slurry prepared in the step S2 into a stirrer for proportioning, adding glass beads with the particle size of 5-10 mu m, rapidly stirring at 800rpm for 20min, then adding polyamide epichlorohydrin resin and polyacrylamide, and stirring for 5min to prepare paper pulp;
s4, the paper pulp prepared in the step S3 is fed into a net to be manufactured, and the decorative base paper is prepared through the processes of squeezing, drying, spraying, matte, coiling, rewinding and the like.
Example 2
The decorative base paper in the embodiment comprises the following components in parts by weight: 95 kg of hardwood pulp fiber slurry, 4 kg of filler and 1 kg of regulator; the filler comprises: 60wt% of titanium dioxide, 15wt% of kaolin, 10wt% of alumina and 15wt% of glass beads; the regulator comprises: 0.8 kg of polyamide epichlorohydrin resin and 0.2 kg of polyacrylamide.
The specific preparation method of the decorative base paper in this example is the same as that of example 1.
Example 3
The decorative base paper in the embodiment comprises the following components in parts by weight: 90 kg of hardwood pulp fiber slurry, 8 kg of filler and 2 kg of regulator; the filler comprises: 60wt% of titanium dioxide, 15wt% of kaolin, 10wt% of alumina and 15wt% of glass beads; the regulator comprises: 1.7 kg of polyamide epichlorohydrin resin and 0.3 kg of polyacrylamide.
The specific preparation method of the decorative base paper in this example is the same as that of example 1.
Example 4
The decorative base paper in the embodiment comprises the following components in parts by weight: 90 kg of hardwood pulp fiber slurry, 8 kg of filler and 2 kg of regulator; the filler comprises: 50wt% of titanium dioxide, 20wt% of kaolin, 15wt% of alumina and 15wt% of glass beads; the regulator comprises: 1.7 kg of polyamide epichlorohydrin resin and 0.3 kg of polyacrylamide.
The specific preparation method of the decorative base paper in this example is the same as that of example 1.
Example 5
The decorative base paper in the embodiment comprises the following components in parts by weight: 90 kg of hardwood pulp fiber slurry, 8 kg of filler and 2 kg of regulator; the filler comprises: 60wt% of titanium dioxide, 20wt% of kaolin, 15wt% of alumina and 5wt% of glass beads; the regulator comprises: 1.7 kg of polyamide epichlorohydrin resin and 0.3 kg of polyacrylamide.
The specific preparation method of the decorative base paper in this example is the same as that of example 1.
Example 6
The decorative base paper in the embodiment comprises the following components in parts by weight: 90 kg of hardwood pulp fiber slurry, 8 kg of filler and 2 kg of regulator; the filler comprises: 56wt% of titanium dioxide, 18wt% of kaolin, 14wt% of alumina and 12wt% of glass beads; the regulator comprises: 1.7 kg of polyamide epichlorohydrin resin and 0.3 kg of polyacrylamide.
The specific preparation method of the decorative base paper in this example is the same as that of example 1.
Examples 7 to 10
The decorative base papers of examples 7 to 10 are different from example 6 in that glass fibers are further added, the monofilament diameter of the glass fibers is 2 to 10 μm, and the length of the glass fibers is 1 to 5 μm; wherein, the glass fiber in the example 7 accounts for 3wt% of the hardwood pulp fiber slurry, the glass fiber in the example 8 accounts for 8wt% of the hardwood pulp fiber slurry, the glass fiber in the example 9 accounts for 5wt% of the hardwood pulp fiber slurry, the glass fiber in the example 10 accounts for 12wt% of the hardwood pulp fiber slurry, and the rest component proportions are consistent with the example 6.
The preparation method comprises the following steps:
s1, adding water, fiber slurry, titanium dioxide, aluminum oxide and kaolin into a pulper according to a proportion, fully disintegrating, controlling the water temperature at 40+/-5 ℃ and preparing slurry with the mass percent concentration of 6.5%;
s2, transferring the slurry prepared in the step S1 into a pulping machine for fully pulping to prepare slurry with the mass percent concentration of 6% and the beating degree of 33 DEG SR;
s3, transferring the slurry prepared in the step S2 into a stirrer for proportioning, adding glass fibers, and stirring for 20min at a rotating speed of 300 rpm; uniformly dividing the glass beads into 3 parts, adding the glass beads into three parts, continuously stirring at a speed of 800rpm in the adding process, wherein the interval time between each adding is 2min, adding the base stirring for 20min, adding the polyamide epichlorohydrin resin and the polyacrylamide, and stirring for 5min to obtain paper pulp;
s4, the paper pulp prepared in the step S3 is fed into a net to be manufactured, and the decorative base paper is prepared through the processes of squeezing, drying, spraying, matte, coiling, rewinding and the like.
Examples 11 to 14
The decorative base papers of examples 11 to 14 are different from example 9 in that glass fibers are replaced with reinforcing fibers obtained by mixing glass fibers and carbon fibers, and the carbon fibers have a monofilament diameter of 2 to 10 μm and a length of 1 to 5 μm; glass fibers and carbon fibers in example 11 were mixed at a mass ratio of 1:1.5, glass fibers and carbon fibers in example 12 were mixed at a mass ratio of 1:4, glass fibers and carbon fibers in example 13 were mixed at a mass ratio of 1:5, glass fibers and carbon fibers in example 14 were mixed at a mass ratio of 1.5:1, and the remainder remained the same as in example 9.
Example 15
The decorative base paper of example 15 was further defined as having a monofilament diameter and a monofilament length of the reinforcing fibers, wherein the glass fibers, the carbon fibers and the monofilaments each had a diameter of 3 to 5. Mu.m, a length of 2 to 4. Mu.m, and the remainder were the same as in example 11.
Examples 16 to 18
The decorative base papers of examples 16 to 18 differ from example 1 in that the fiber pulp adopts a mixture of wood pulp, straw pulp and hemp pulp; in example 16, wood pulp accounts for 45wt%, straw pulp accounts for 35wt%, hemp pulp accounts for 20wt%; in example 17, wood pulp was 60wt%, straw pulp was 20wt%, hemp pulp was 20wt%; in example 18, wood pulp was 80wt%, straw pulp was 10wt%, hemp pulp was 10wt%. The remainder remained the same as in example 1.
Example 19
The decorative base paper of example 19 differs from example 16 in that the wood pulp is a mixture of hardwood and softwood pulps, the mass ratio of hardwood and softwood pulps being 5:1, the remainder remaining consistent with example 16.
Example 20
The decorative base paper of example 20 differs from example 1 in that the conditioning agent comprises: 1.5 kg of polyamide epichlorohydrin resin, 1.5 kg of alkylsilane coupling agent and 0.5 kg of polyacrylamide, and the balance of the components were the same as in example 1.
The decorative base paper of example 20 was prepared as follows:
s1, adding water, fiber slurry, titanium dioxide, aluminum oxide and kaolin into a pulper according to a proportion, fully disintegrating, controlling the water temperature at 40+/-5 ℃ and preparing slurry with the mass percent concentration of 6.5%;
s2, transferring the slurry prepared in the step S1 into a pulping machine for fully pulping to prepare slurry with the mass percent concentration of 6% and the beating degree of 33 DEG SR;
s3, transferring the slurry prepared in the step S2 into a stirrer for proportioning, firstly mixing glass beads and an alkylsilane coupling agent, heating to 80 ℃, stirring and reacting for 60min, then adding the mixture into the slurry in the stirrer, rapidly stirring for 20min at a stirring speed of 800rpm, then adding polyamide epichlorohydrin resin and polyacrylamide, and stirring for 5min to prepare paper pulp;
s4, the paper pulp prepared in the step S3 is fed into a net to be manufactured, and the decorative base paper is prepared through the processes of squeezing, drying, spraying, matte, coiling, rewinding and the like.
Comparative example
Comparative example 1
The decorative base paper of comparative example 1 was different from example 1 in that no glass beads were added to the filler, and the remainder remained the same as example 1.
Comparative example 2
The decorative base paper of comparative example 2 was different from example 1 in that the glass beads had a particle size of 15 to 25. Mu.m, and the remainder was the same as in example 1.
Comparative example 3
The decorative base paper in comparative example 3 comprises the following components in parts by weight: 80 kg of fiber slurry, 15 kg of filler, 5 kg of regulator and the balance of the above are identical to those of example 1.
Comparative example 4
The decorative base paper in comparative example 4 comprises the following components in proportion: 40wt% of titanium dioxide, 10wt% of kaolin, 10wt% of alumina, 40wt% of glass beads and the balance of the titanium dioxide, kaolin and alumina are identical to those of the example 1.
Performance test
Each performance test was performed on the decorative base papers prepared in examples 1 to 20 and comparative examples 1 to 4, and the test items were as follows:
smoothness: according to GB/T456-2002 determination of smoothness of paper and paperboard (Biek method);
surface strength: according to GB/T22837-2008 "determination of surface Strength of paper and cardboard (wax stick method)";
dry tensile strength: according to GB/T12914-2018, constant speed tensile method for determination of tensile Strength of paper and paperboard (20 mm/min);
opacity: according to GB/T1543-2005 determination of opacity of paper and paperboard (paper backing) (diffuse reflectance method);
the results of the performance tests are shown in Table 2 below.
Table 2: results of Performance measurements of examples 1 to 20 and comparative examples 1 to 4
As can be seen from the data in examples 1 to 6, comparative examples 1 to 2 and table 2, after the glass beads are added, the strength and the hiding power of the decorative base paper are obviously improved, the opacity of the decorative base paper can reach 97.6%, and the decorative base paper has strong hiding power; the surface strength of the decorative base paper can reach 18A at the highest, and the decorative base paper has good printability; and the tensile strength of the decorative base paper also reaches a higher level, and the decorative base paper has good mechanical strength.
In examples 7 to 10, reinforcing fibers mainly composed of glass fibers were added to the base paper of example 6, and it can be seen from the data in table 2 that the properties of the base paper for decoration were further improved in all aspects after the glass fibers were added; in examples 11 to 14, the glass fibers were replaced with a mixture of glass fibers and carbon fibers, and the properties of the obtained decorative base paper were further improved by further optimizing the ratio of the reinforcing fibers. Further limitation of the length of the monofilament diameter of the reinforcing fibers in example 15 shows that the properties of the finished base paper are better when the monofilament diameter and length distribution of the reinforcing fibers are more concentrated.
In examples 16 to 18, the wood pulp in example 1 was replaced with a mixture of wood pulp, straw pulp and hemp pulp, and it can be seen that the performance of the fiber pulp in which the different kinds of plant fiber pulp are mixed and supported is better than that of the single wood pulp fiber. In example 19, the addition of a certain proportion of softwood pulp based on hardwood pulp can further improve the properties of the fiber pulp and enhance the strength of the decorative base paper.
In example 20, the modified glass beads were added to the fiber slurry with a practical alkylsilane coupling agent, and the modified glass beads had better affinity with the fiber slurry and other fillers, and had higher compatibility, so that the connection strength between the portions of the decorative base paper was higher, and the produced decorative base paper had better properties and strength.
In comparative example 3, larger glass beads were used, and it can be seen that when the glass beads were too large, the surface properties of the decorative base paper were affected, the surface of the decorative base paper was roughened, the smoothness was lowered, and the mixing in the fiber slurry was affected, and the properties and strength of the produced decorative base paper were also lowered.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (10)
1. The decorative base paper is characterized by comprising the following raw materials in parts by weight: 85-95 parts of fiber slurry, 4-12 parts of filler and 1-3 parts of regulator;
the filler comprises the following raw materials in percentage by weight: 50-60% of titanium dioxide, 15-20% of kaolin, 10-15% of alumina and 5-15% of glass beads; the particle size of the glass beads is 5-10 mu m.
2. The decorative base paper according to claim 1, wherein reinforcing fibers are further added to the decorative base paper, the reinforcing fibers account for 3-8 wt% of the fiber slurry, and the reinforcing fibers comprise at least one of glass fibers and carbon fibers.
3. A decorative base paper according to claim 2, wherein the reinforcing fibers comprise glass fibers and carbon fibers, the mass ratio of the glass fibers to the carbon fibers being 1: (1.5-4).
4. A decorative base paper according to claim 3, wherein the mass ratio of the glass fiber to the glass beads is 1: (0.55 to 1.2).
5. The decorative base paper according to claim 2, wherein the monofilament of the reinforcing fiber has a diameter of 2 to 10 μm and a length of 1 to 5mm.
6. The decorative base paper according to claim 1, wherein the regulator is at least one of a silane coupling agent, a wet strength agent and a retention aid.
7. The decorative base paper according to any one of claims 1 to 6, wherein the fiber pulp comprises at least two of wood pulp, straw pulp and hemp pulp.
8. The decorative base paper according to claim 7, wherein the fiber pulp comprises 45-60% wood pulp, 20-35% straw pulp and 10-20% hemp pulp.
9. The method for preparing the decorative base paper according to any one of claims 1 to 8, comprising the following steps:
s1, pulping: adding water, fiber slurry, titanium dioxide, aluminum oxide and kaolin into a pulper for full disintegration to prepare slurry with the mass concentration of 6.5-8.5%, wherein the water temperature for pulping is 35-40 ℃;
s2, pulping: adding the slurry obtained by pulping in the step S1 into a pulping machine for fully mixing to prepare slurry with the mass concentration of 6-8% and the beating degree of 33-35 DEG SR;
s3, proportioning: adding the slurry prepared in the step S2 into a stirrer, adding glass beads, fully stirring for 20-30 min at the rotating speed of 800-1000 rpm, adding a regulator, and continuously stirring for 5-10 min;
s4, papermaking: and (3) the sizing agent prepared in the step (S3) is fed into a net to manufacture paper, and the decorative base paper is prepared through the processes of squeezing, drying, spraying, calendaring, coiling and rewinding.
10. The method for producing a decorative base paper according to claim 9, wherein when reinforcing fibers are added to the decorative base paper, comprising the steps of:
s1, pulping: adding water, fiber slurry, titanium pigment and kaolin into a pulper for full disintegration to prepare slurry with the mass concentration of 6.5-8.5%, wherein the water temperature for pulping is 35-40 ℃;
s2, pulping: adding the slurry obtained by pulping in the step S1 into a pulping machine for fully mixing to prepare slurry with the mass concentration of 6-8% and the beating degree of 33-35 DEG SR;
s3, proportioning: adding the slurry prepared in the step S2 into a stirrer, adding the reinforcing fiber, stirring for 15-20 min at 300-500 rpm, adding the glass beads for 3-5 times, fully stirring for 20-30 min at 800-1000 rpm, adding the regulator, and continuing stirring for 5-10 min;
s4, papermaking: and (3) the sizing agent prepared in the step (S3) is fed into a net to manufacture paper, and the decorative base paper is prepared through the processes of dehydration of a net part, squeezing, drying, spraying, calendaring, coiling and rewinding.
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| WO1998013549A1 (en) * | 1996-09-27 | 1998-04-02 | The Procter & Gamble Company | A process for making smooth uncreped tissue paper containing fine particulate fillers |
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| CN215856952U (en) * | 2021-09-08 | 2022-02-18 | 苏州宏裕联新材料科技有限公司 | Low-formaldehyde wear-resistant furniture facing paper |
| CN114990929A (en) * | 2022-05-26 | 2022-09-02 | 浙江夏王纸业有限公司 | Production method of simulated veneer base paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2508508A1 (en) * | 1981-06-30 | 1982-12-31 | Dalle & Lecomte Papeteries | Fibrous sheet or panel prodn. of paper mfg. process - using aq. suspension contg. (in)organic hollow fillers, e.g. glass beads, to give lightweight prod. |
| WO1998013549A1 (en) * | 1996-09-27 | 1998-04-02 | The Procter & Gamble Company | A process for making smooth uncreped tissue paper containing fine particulate fillers |
| CN101903596A (en) * | 2007-12-21 | 2010-12-01 | 泰克诺赛尔装饰两合公司 | Base paper for decorative coating materials |
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