WO2020237794A1 - 一种纸面石膏板及其制备方法 - Google Patents

一种纸面石膏板及其制备方法 Download PDF

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Publication number
WO2020237794A1
WO2020237794A1 PCT/CN2019/096027 CN2019096027W WO2020237794A1 WO 2020237794 A1 WO2020237794 A1 WO 2020237794A1 CN 2019096027 W CN2019096027 W CN 2019096027W WO 2020237794 A1 WO2020237794 A1 WO 2020237794A1
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Prior art keywords
parts
gypsum board
paper
modified
starch
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PCT/CN2019/096027
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English (en)
French (fr)
Inventor
谭丹君
王鹏起
简铭
尹东杰
王莹
何亮
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北新集团建材股份有限公司
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Publication of WO2020237794A1 publication Critical patent/WO2020237794A1/zh

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
    • C04B28/143—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/02—Conditioning the material prior to shaping
    • B28B17/023—Conditioning gypsum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017—Aspects relating to the protection of the environment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40—Porous or lightweight materials

Definitions

  • This application relates to but is not limited to the technical field of new building materials, in particular to a paper-faced gypsum board and a preparation method thereof.
  • Phosphogypsum is an industrial waste produced in the process of wet-process phosphoric acid production. Its main component is CaSO 4 ⁇ 2H 2 O, which contains impurities such as fluorine compounds, phosphates, organics, and free acids.
  • the utilization rate of phosphogypsum in my country is low. The accumulation of phosphogypsum not only takes up a lot of land resources, but also causes certain harm to the surrounding atmosphere, soil, water system and human environment. Therefore, the comprehensive utilization of phosphogypsum is imminent.
  • fluoride ion (F -) phosphogypsum to migrate in the subsequent drying process
  • the surface of the gypsum board has an adverse effect on the strength of the gypsum product and the adhesion of the protective paper.
  • the application provides a paper-faced gypsum board.
  • porous mineral materials By adding porous mineral materials to the paper-faced gypsum board, the problem of poor bonding between the core and the protective paper in the paper-faced gypsum board is solved, and the paper-faced gypsum is improved.
  • the strength of the board and reduces the surface density of the gypsum board, so that it has a certain humidity control function.
  • the gypsum board provided in this application includes 100 parts by weight of phosphogypsum, 1 to 10 parts of porous mineral materials, 0.02 to 0.5 parts of calcium oxide, 0.6 to 1.0 parts of modified starch, and 0.06 parts of foaming agent. Parts to 0.2 parts, and 0.4 parts to 1.2 parts of water reducing agent.
  • the composition by weight of the gypsum board may be as follows: 100 parts of phosphogypsum, 1 part to 10 parts of porous mineral material, 0.02 part to 0.5 part of calcium oxide, 0.6 part to 1 part of modified starch Parts, 0.06 parts to 0.2 parts of foaming agent, 0.4 parts to 1.2 parts of water reducing agent, and upper and lower face protection paper.
  • the weight composition of the gypsum board may include: 100 parts of phosphogypsum, 3 to 5 parts of porous mineral materials, 0.2 to 0.3 parts of calcium oxide, and 0.8 to 1 parts of modified starch. Parts, 0.1 part to 0.2 part of foaming agent, and 0.5 part to 0.8 part of water reducing agent.
  • the composition by weight of the gypsum board may be as follows: 100 parts of phosphogypsum, 3 to 5 parts of porous mineral materials, 0.2 to 0.3 parts of calcium oxide, 0.8 to 1 parts of modified starch Parts, 0.1 part to 0.2 part of foaming agent, 0.5 part to 0.8 part of water reducing agent, and upper and lower face protection paper.
  • the composition by weight of the gypsum board may be as follows: 100 parts of phosphogypsum, 1 part of zeolite, 0.02 parts of calcium oxide, 0.6 parts of modified starch, 0.06 parts of foaming agent, and water reducing agent 0.4 copies, and upper and lower face protection paper.
  • the composition by weight of the gypsum board may be as follows: 100 parts phosphogypsum, 5 parts zeolite, 0.3 parts calcium oxide, 0.8 parts modified starch, 0.1 parts foaming agent, water reducing agent 0.8 copies, and upper and lower face protection paper.
  • the composition by weight of the gypsum board may be as follows: 100 parts of phosphogypsum, 10 parts of zeolite, 0.5 parts of calcium oxide, 1 part of modified starch, 0.2 parts of foaming agent, water reducing agent 1.2 copies, and upper and lower face protection paper.
  • the composition by weight of the gypsum board may be as follows: 100 parts of phosphogypsum, 6 parts of sepiolite, 0.4 part of calcium oxide, 0.8 part of modified starch, 0.1 part of foaming agent, and 0.8 parts of water agent, and upper and lower face protection paper.
  • the composition by weight of the gypsum board may be as follows: 100 parts of phosphogypsum, 10 parts of palygorskite, 0.5 parts of calcium oxide, 1 part of modified starch, 0.2 parts of foaming agent, and 1.2 parts of liquid, and upper and lower face protection paper.
  • the porous mineral material may be selected from any one or more of zeolite, sepiolite and palygorskite.
  • the modified starch may be selected from any one or more of modified corn starch, modified soybean starch, modified potato starch, and modified tapioca starch.
  • the foaming agent may be selected from any one or more of sodium lauryl sulfate, sodium fatty alcohol polyoxyethylene ether sulfate and sodium ⁇ -alkenyl sulfonate.
  • the water reducing agent may be selected from any one or more of sulfonated melamine, sulfamate, naphthalene-based water reducing agent and polycarboxylic acid water reducing agent.
  • the naphthalene-based water reducing agent can be selected from any one or two of ⁇ -naphthalenesulfonic acid formaldehyde condensate and ⁇ -naphthalenesulfonic acid sodium formaldehyde condensate.
  • the polycarboxylic acid water reducing agent may be selected from any one or more of polyacrylate, polyacrylate, and maleic acid-acrylic acid copolymer.
  • porous mineral materials, modified starch, foaming agent and water reducing agent used in the raw materials of gypsum board are not limited to the specific materials listed above. Materials that can achieve the effects of various reagents can be used in this invention. In the preparation of the paper-faced gypsum of the application, the specific materials listed above do not limit the application in any form or substance.
  • the thickness of the gypsum board may be 9.5 mm to 15 mm.
  • the paper-faced gypsum board provided by the present application improves the wet-heat bonding performance of the core and the protective paper in the paper-faced gypsum board by adding porous mineral materials to the paper-faced gypsum board, and improves the strength of the paper-faced gypsum board. It also reduces the surface density of the gypsum board to make it have a certain humidity control function. When the air humidity is high, it can absorb water vapor in the air and reduce the indoor air humidity. When the air humidity is low, it can release the paper gypsum. The moisture absorbed in the board adjusts the indoor air humidity.
  • the application also provides a method for preparing the above-mentioned plasterboard, including:
  • the slurry is spread flat between the upper and lower face protection papers, is pressed into a shape, and the formed board is dried to obtain the paper face gypsum board.
  • the thickness of the gypsum board may be 9.5 mm to 15 mm.
  • the temperature of the heat treatment modification may be 200°C to 400°C.
  • the heat treatment modification time may be 30 minutes to 60 minutes.
  • the temperature for calcining the phosphogypsum may be 160°C to 200°C.
  • the specific surface area of the mixed fine material obtained by grinding may be 3500 cm 2 /g to 4500 cm 2 /g.
  • the time for aging the mixed fine material may be 15 minutes to 60 minutes.
  • the porous mineral material is modified by heat treatment, which greatly improves the specific surface area and adsorption performance of the porous mineral material, so that the porous mineral material can better cure the fluoride ions in the phosphogypsum Impurities, thereby improving the wet-heat bonding performance and strength of the gypsum board.
  • a paper-faced gypsum board which consists of 100 parts by weight of phosphogypsum, 1 part of zeolite, 0.02 parts of calcium oxide, 0.6 parts of modified corn starch, 0.06 parts of foaming agent, 0.4 parts of water reducing agent, and upper and lower parts. Face protection paper.
  • the foaming agent is sodium lauryl sulfate.
  • the water reducing agent is sulfonated melamine (model: F15G) produced by BASF, Germany.
  • the preparation method of gypsum board includes the following steps:
  • Step a heat-treat 1 part of zeolite at 300°C for 30 min;
  • Step b calcining 100 parts of phosphogypsum at 180°C to obtain building gypsum powder
  • Step c Mix the building gypsum powder in step b with the heat-treated modified zeolite in step a, and obtain a uniform mixture after mechanical stirring;
  • Step d mechanically mix the mixture in step c with 0.02 parts of calcium oxide uniformly, and pulverize into a mixed fine material with a specific surface area of 3800 cm 2 /g;
  • Step e aging the mixed fine material in step d for 30 minutes;
  • Step f Mix the aged mixed fines in step e, 0.6 parts of modified corn starch, 0.06 parts of sodium lauryl sulfate, 0.4 parts of sulfonated melamine and 0.75 parts of water, and obtain a slurry after fully stirring;
  • Step g spread the slurry between the upper and lower protective papers, press to form a 9.5mm thick plate, and dry the formed plate to obtain a paper-faced gypsum board product.
  • a paper-faced gypsum board which consists of 100 parts by weight of phosphogypsum, 5 parts of zeolite, 0.3 parts of calcium oxide, 0.8 parts of modified corn starch, 0.1 parts of foaming agent, 0.8 parts of water reducing agent, and upper and lower parts. Face protection paper.
  • the foaming agent is sodium lauryl sulfate.
  • the water reducing agent is sulfonated melamine (model: F15G) produced by BASF, Germany.
  • the preparation method of gypsum board includes the following steps:
  • Step a Heat treatment and modify 5 parts of zeolite at 300°C for 30 minutes;
  • Step b calcining 100 parts of phosphogypsum at 180°C to obtain building gypsum powder
  • Step c Mix the building gypsum powder in step b with the heat-treated modified zeolite in step a, and obtain a uniform mixture after mechanical stirring;
  • Step d mechanically mix the mixture in step c with 0.3 parts of calcium oxide uniformly, and grind it into a mixed fine material with a specific surface area of 3800 cm 2 /g;
  • Step e aging the mixed fine material in step d for 30 minutes;
  • Step f Mix the aged mixed fines in step e, 0.8 parts of modified corn starch, 0.1 parts of sodium lauryl sulfate, 0.8 parts of sulfonated melamine and 0.70 parts of water, and obtain a slurry after thorough stirring;
  • Step g Spread the slurry between the upper and lower protective papers, press to form a 9.5mm thick plate, and dry the formed plate to obtain a plasterboard product.
  • a paper-faced gypsum board which consists of 100 parts by weight of phosphogypsum, 10 parts of zeolite, 0.5 parts of calcium oxide, 1.0 part of modified corn starch, 0.2 parts of foaming agent, 1.2 parts of water reducing agent, and upper and lower parts. Face protection paper.
  • the foaming agent is sodium lauryl sulfate.
  • the water reducing agent is sulfonated melamine (model: F15G) produced by BASF, Germany.
  • the preparation method of gypsum board includes the following steps:
  • Step a Heat treatment and modify 10 parts of zeolite at 300°C for 30 min;
  • Step b calcining 100 parts of phosphogypsum at 180°C to obtain building gypsum powder
  • Step c Mix the building gypsum powder in step b with the heat-treated modified zeolite in step a, and obtain a uniform mixture after mechanical stirring;
  • Step d mechanically mix the mixture in step c with 0.5 parts of calcium oxide uniformly, and grind it into a mixed fine material with a specific surface area of 3800 cm 2 /g;
  • Step e aging the mixed fine material in step d for 30 minutes;
  • Step f Mix the aged mixed fines in step e, 1.0 part of modified corn starch, 0.2 part of sodium lauryl sulfate, 1.2 parts of sulfonated melamine, and 0.65 parts of water, and obtain a slurry after fully stirring;
  • Step g Spread the slurry between the upper and lower protective papers, press to form a 9.5mm thick plate, and dry the formed plate to obtain a plasterboard product.
  • a paper-faced gypsum board which consists of 100 parts by weight of phosphogypsum, 6 parts of sepiolite, 0.4 part of calcium oxide, 0.8 part of modified soybean starch, 0.1 part of foaming agent, 0.8 part of water reducing agent, and , Under the protective paper.
  • the foaming agent is fatty alcohol polyoxyethylene ether sodium sulfate.
  • the water reducing agent is a naphthalene-based water reducing agent-sodium methylene dinaphthalene sulfonate.
  • the preparation method of gypsum board includes the following steps:
  • Step a Heat treatment and modify 6 parts of sepiolite at 200°C for 40min;
  • Step b calcining 100 parts of phosphogypsum at 160°C to obtain building gypsum powder
  • Step c Mix the building gypsum powder in step b with the sepiolite modified by heat treatment in step a, and obtain a uniform mixture after mechanical stirring;
  • Step d mechanically mix the mixture in step c with 0.4 parts of calcium oxide uniformly, and grind it into a mixed fine material with a specific surface area of 3500 cm 2 /g;
  • Step e aging the mixed fine material in step d for 15 minutes;
  • Step f Mix the aged mixed fines in step e, 0.8 parts of modified soybean starch, 0.1 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 0.8 parts of sodium methylene dinaphthalene sulfonate and 0.70 parts of water to fully mix Obtain slurry after stirring;
  • Step g spread the slurry between the upper and lower protective papers, press to form a 9.5 mm thick plate, and dry the formed plate to obtain a plasterboard product.
  • a paper-faced gypsum board which consists of 100 parts by weight of phosphogypsum, 10 parts of palygorskite, 0.5 part of calcium oxide, 1.0 part of modified tapioca starch, 0.2 part of foaming agent, 1.2 parts of water reducing agent, and the above , Under the protective paper.
  • the foaming agent is sodium ⁇ -ene sulfonate.
  • the water reducing agent is polycarboxylic acid water reducing agent-sodium polyacrylate.
  • the preparation method of gypsum board includes the following steps:
  • Step a Heat treatment and modify 10 parts of palygorskite at 400°C for 60min;
  • Step b calcining 100 parts of phosphogypsum at 200°C to obtain building gypsum powder
  • Step c Mix the building gypsum powder in step b with the palygorskite modified by heat treatment in step a, and obtain a uniform mixture after mechanical stirring;
  • Step d mechanically mix the mixture in step c with 0.5 parts of calcium oxide uniformly, and grind it into a mixed fine material with a specific surface area of 4500 cm 2 /g;
  • Step e aging the mixed fine material in step d for 60 minutes;
  • Step f Mix the aged mixed fines in step e, 1.0 part of modified tapioca starch, 0.2 part of sodium ⁇ -alkenyl sulfonate, 1.2 part of sodium polyacrylate and 0.68 part of water, and mix thoroughly to obtain a slurry;
  • Step g spread the slurry between the upper and lower protective papers, press to form a 9.5 mm thick plate, and dry the formed plate to obtain a plasterboard product.
  • the paper-faced gypsum board of Comparative Example 1 is not added with porous mineral materials.
  • the preparation method of the paper-faced gypsum board includes the following steps:
  • Step a calcining 100 parts of phosphogypsum at 180°C to obtain building gypsum powder
  • Step b mechanically mix the building gypsum powder in step a with 0.5 parts of calcium oxide uniformly, and grind into a mixed fine material with a specific surface area of 3800 cm 2 /g;
  • Step c aging the mixed fine material in step b for 30 minutes;
  • Step d Mix the aged mixed fines in step c, 1.0 part of modified corn starch, 0.2 part of sodium lauryl sulfate, 1.2 parts of sulfonated melamine and 0.65 parts of water, and then mix thoroughly to obtain a slurry;
  • Step e spread the slurry between the upper and lower protective papers, press to form a 9.5mm thick plate, and dry the formed plate to obtain a plasterboard product.
  • the areal density of the gypsum board in Examples 1 to 5 is also lower than that of Comparative Example 1. Therefore, the addition of porous mineral materials can also reduce the areal density of the gypsum board. It has certain humidity control performance.

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Abstract

一种纸面石膏板，重量份组成包括：磷石膏100份，多孔矿物材料1份至10份，氧化钙0.02份至0.5份，改性淀粉0.6份至1.0份，发泡剂0.06份至0.2份，以及减水剂0.4份至1.2份。一种纸面石膏板的制备方法。通过在纸面石膏板中加入多孔矿物材料，解决纸面石膏板中的板芯与护面纸粘结性能不佳的问题，提高纸面石膏板的强度，并降低纸面石膏板的面密度，使其具有一定的调湿功能。

Description

一种纸面石膏板及其制备方法 技术领域
本申请涉及但不限于新型建筑材料技术领域，特别涉及一种纸面石膏板及其制备方法。
背景技术
磷石膏是湿法制造磷酸过程中产生的工业废渣，主要成分为CaSO 4·2H 2O，其含有氟化合物、磷酸盐、有机物、游离酸等杂质。我国磷石膏的利用率较低，磷石膏的堆积不仅占用了大量的土地资源，而且会对周边的大气、土壤、水系以及人文环境造成一定的危害，因此磷石膏的综合利用迫在眉睫。
但是，磷石膏中的可溶性氟主要以氟离子(F -)的形式存在，如果直接利用磷石膏制造纸面石膏板，磷石膏中的氟离子(F -)在后续的干燥过程中会迁移至石膏板的表面，对石膏制品的强度和护面纸的粘接有不利的影响。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请提供了一种纸面石膏板，通过在纸面石膏板中加入多孔矿物材料，解决了纸面石膏板中的板芯与护面纸粘结性能不佳的问题，提高了纸面石膏板的强度，并降低了纸面石膏板的面密度，使其具有一定的调湿功能。
本申请提供的纸面石膏板，其重量份组成包括：磷石膏100份、多孔矿物材料1份至10份、氧化钙0.02份至0.5份、改性淀粉0.6份至1.0份、发泡剂0.06份至0.2份、以及减水剂0.4份至1.2份。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、多孔矿物材料1份至10份、氧化钙0.02份至0.5份、改性淀粉0.6份至1份、发泡剂0.06份至0.2份、减水剂0.4份至1.2份，以及上、下护面 纸。
在本申请的实施例中，所述纸面石膏板的重量份组成可以包括：磷石膏100份、多孔矿物材料3份至5份、氧化钙0.2份至0.3份、改性淀粉0.8份至1份、发泡剂0.1份至0.2份、以及减水剂0.5份至0.8份。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、多孔矿物材料3份至5份、氧化钙0.2份至0.3份、改性淀粉0.8份至1份、发泡剂0.1份至0.2份、减水剂0.5份至0.8份，以及上、下护面纸。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、沸石1份、氧化钙0.02份、改性淀粉0.6份、发泡剂0.06份、减水剂0.4份，以及上、下护面纸。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、沸石5份、氧化钙0.3份、改性淀粉0.8份、发泡剂0.1份、减水剂0.8份，以及上、下护面纸。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、沸石10份、氧化钙0.5份、改性淀粉1份、发泡剂0.2份、减水剂1.2份，以及上、下护面纸。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、海泡石6份、氧化钙0.4份、改性淀粉0.8份、发泡剂0.1份、减水剂0.8份，以及上、下护面纸。
在本申请的实施例中，所述纸面石膏板的重量份组成可以如下：磷石膏100份、坡缕石10份、氧化钙0.5份、改性淀粉1份、发泡剂0.2份、减水剂1.2份，以及上、下护面纸。
在本申请的实施例中，所述多孔矿物材料可以选自沸石、海泡石和坡缕石中的任意一种或多种。
在本申请的实施例中，所述改性淀粉可以选自改性玉米淀粉、改性大豆淀粉、改性马铃薯淀粉和改性木薯淀粉中任意一种或多种。
在本申请的实施例中，所述发泡剂可以选自十二烷基硫酸钠、脂肪醇聚氧乙烯醚硫酸钠和α-烯基磺酸钠中的任意一种或多种。
在本申请的实施例中，所述减水剂可以选自磺化三聚氰胺、氨基磺酸盐、萘系减水剂和聚羧酸减水剂中的任意一种或多种。
在本申请的实施例中，所述萘系减水剂可以选自β-萘磺酸甲醛缩合物和β-萘磺酸钠甲醛缩合物中的任意一种或两种。
在本申请的实施例中，所述聚羧酸减水剂可以选自聚丙烯酸盐、聚丙烯酸酯、马来酸-丙烯酸共聚物中的任意一种或多种。
应理解，纸面石膏板原料中使用的多孔矿物材料、改性淀粉、发泡剂和减水剂，并不限于上述所列举的具体材料，能够实现各种试剂的作用的材料均可用于本申请的纸面石膏的制备中，上述所列举的具体材料并非对本申请作出任何形式上或实质上的限定。
在本申请的实施例中，所述纸面石膏板的厚度可以为9.5mm至15mm。
本申请提供的纸面石膏板，通过在纸面石膏板中加入多孔矿物材料，改善了纸面石膏板中的板芯与护面纸的湿热粘结性能，提高了纸面石膏板的强度，并降低了纸面石膏板的面密度，使其具有一定的调湿功能，在空气湿度较高时，能吸附空气中的水汽，降低室内空气湿度，空气湿度较低时，能释放纸面石膏板中吸附的水汽，调节室内空气湿度。
本申请还提供了一种上述纸面石膏板的制备方法，包括：
将所述多孔矿物材料进行热处理改性；
将所述磷石膏进行煅烧得到建筑石膏粉；
将所述建筑石膏粉与热处理改性后的多孔矿物材料混合，搅拌后得到均匀的混合料；
将所述混合料与所述氧化钙混合均匀，并粉磨成混合细料；
将所述混合细料进行陈化；
将陈化后的混合细料、所述改性淀粉、所述发泡剂、所述减水剂和适量的水混合，充分搅拌后得到料浆；
将所述料浆平铺在上、下护面纸之间，压制成型，并将成型后的板材烘干，制得所述纸面石膏板。
在本申请的实施例中，所述纸面石膏板的厚度可以为9.5mm至15mm。
在本申请的实施例中，所述热处理改性的温度可以为200℃至400℃。
在本申请的实施例中，所述热处理改性的时间可以为30min至60min。
在本申请的实施例中，煅烧所述磷石膏的温度可以为160℃至200℃。
在本申请的实施例中，粉磨得到的混合细料的比表面积可以为3500cm 2/g至4500cm 2/g。
在本申请的实施例中，陈化所述混合细料的时间可以为15min至60min。
本申请具有如下有益效果：
本申请提供的纸面石膏板的制备方法中，通过对多孔矿物材料进行热处理改性，大大提高了多孔矿物材料的比表面积和吸附性能，使得多孔矿物材料更好的固化磷石膏中的氟离子杂质，进而提高纸面石膏板的湿热粘结性能和强度。
本申请的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本申请而了解。本申请的目的和其他优点可通过在说明书、权利要求书所特别指出的结构来实现和获得。
详述
为使本申请的目的、技术方案和优点更加清楚明白，下文中将对本申请的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
以下实施例中所使用的原料和试剂，如无特别说明，均为普通市售产品。
下面结合具体地实施例对本申请作进一步说明。
实施例1：
一种纸面石膏板，其重量份组成包括：磷石膏100份、沸石1份、氧化钙0.02份、改性玉米淀粉0.6份、发泡剂0.06份、减水剂0.4份，以及上、下护面纸。
其中，发泡剂为十二烷基硫酸钠。
其中，减水剂为德国巴斯夫(BASF)公司生产的磺化三聚氰胺(型号：F15G)。
纸面石膏板的制备方法，包括如下步骤：
步骤a：将1份沸石在300℃下热处理改性30min；
步骤b：将100份磷石膏在180℃下煅烧得到建筑石膏粉；
步骤c：将步骤b中的建筑石膏粉与步骤a中热处理改性后的沸石混合，机械搅拌后得到均匀的混合料；
步骤d：将步骤c中的混合料与0.02份氧化钙机械混合均匀，并粉磨成比表面积为3800cm 2/g的混合细料；
步骤e：将步骤d中的混合细料陈化30min；
步骤f：将步骤e中陈化后的混合细料、0.6份改性玉米淀粉、0.06份十二烷基硫酸钠、0.4份磺化三聚氰胺和0.75份水混合，充分搅拌后得到料浆；
步骤g：将料浆平铺在上下护面纸之间，压制成型为9.5mm厚的板材，并将成型后的板材烘干，得到纸面石膏板产品。
实施例2：
一种纸面石膏板，其重量份组成包括：磷石膏100份、沸石5份、氧化钙0.3份、改性玉米淀粉0.8份、发泡剂0.1份、减水剂0.8份，以及上、下护面纸。
其中，发泡剂为十二烷基硫酸钠。
其中，减水剂为德国巴斯夫(BASF)公司生产的磺化三聚氰胺(型号：F15G)。
纸面石膏板的制备方法，包括如下步骤：
步骤a：将5份沸石在300℃下热处理改性30min；
步骤b：将100份磷石膏在180℃下煅烧得到建筑石膏粉；
步骤c：将步骤b中的建筑石膏粉与步骤a中热处理改性后的沸石混合，机械搅拌后得到均匀的混合料；
步骤d：将步骤c中的混合料与0.3份氧化钙机械混合均匀，并粉磨成比 表面积为3800cm 2/g的混合细料；
步骤e：将步骤d中的混合细料陈化30min；
步骤f：将步骤e中陈化后的混合细料、0.8份改性玉米淀粉、0.1份十二烷基硫酸钠、0.8份磺化三聚氰胺和0.70份水混合，充分搅拌后得到浆料；
步骤g：将料浆平铺在上下护面纸之间，压制成型为9.5mm厚的板材，并将成型后的板材烘干，得到纸面石膏板产品。
实施例3：
一种纸面石膏板，其重量份组成包括：磷石膏100份、沸石10份、氧化钙0.5份、改性玉米淀粉1.0份、发泡剂0.2份、减水剂1.2份，以及上、下护面纸。
其中，发泡剂为十二烷基硫酸钠。
其中，减水剂为德国巴斯夫(BASF)公司生产的磺化三聚氰胺(型号：F15G)。
纸面石膏板的制备方法，包括如下步骤：
步骤a：将10份沸石在300℃下热处理改性30min；
步骤b：将100份磷石膏在180℃下煅烧得到建筑石膏粉；
步骤c：将步骤b中的建筑石膏粉与步骤a中热处理改性后的沸石混合，机械搅拌后得到均匀的混合料；
步骤d：将步骤c中的混合料与0.5份氧化钙机械混合均匀，并粉磨成比表面积为3800cm 2/g的混合细料；
步骤e：将步骤d中的混合细料陈化30min；
步骤f：将步骤e中陈化后的混合细料、1.0份改性玉米淀粉、0.2份十二烷基硫酸钠、1.2份磺化三聚氰胺和0.65份水混合，充分搅拌后得到料浆；
步骤g：将料浆平铺在上下护面纸之间，压制成型为9.5mm厚的板材，并将成型后的板材烘干，得到纸面石膏板产品。
实施例4：
一种纸面石膏板，其重量份组成包括：磷石膏100份、海泡石6份、氧 化钙0.4份、改性大豆淀粉0.8份、发泡剂0.1份、减水剂0.8份，以及上、下护面纸。
其中，发泡剂为脂肪醇聚氧乙烯醚硫酸钠。
其中，减水剂为奈系减水剂——亚甲基二萘磺酸钠。
纸面石膏板的制备方法，包括如下步骤：
步骤a：将6份海泡石在200℃下热处理改性40min；
步骤b：将100份磷石膏在160℃下煅烧得到建筑石膏粉；
步骤c：将步骤b中的建筑石膏粉与步骤a中热处理改性后的海泡石混合，机械搅拌后得到均匀的混合料；
步骤d：将步骤c中的混合料与0.4份氧化钙机械混合均匀，并粉磨成比表面积为3500cm 2/g的混合细料；
步骤e：将步骤d中的混合细料陈化15min；
步骤f：将步骤e中陈化后的混合细料、0.8份改性大豆淀粉、0.1份脂肪醇聚氧乙烯醚硫酸钠、0.8份亚甲基二萘磺酸钠和0.70份水混合，充分搅拌后得到浆料；
步骤g：将料浆平铺在上下护面纸之间，压制成型为9.5mm厚的板材，并将成型后的板材烘干，得到纸面石膏板产品。
实施例5：
一种纸面石膏板，其重量份组成包括：磷石膏100份、坡缕石10份、氧化钙0.5份、改性木薯淀粉1.0份、发泡剂0.2份、减水剂1.2份，以及上、下护面纸。
其中，发泡剂为α-烯基磺酸钠。
其中，减水剂为聚羧酸减水剂——聚丙烯酸钠。
纸面石膏板的制备方法，包括如下步骤：
步骤a：将10份坡缕石在400℃下热处理改性60min；
步骤b：将100份磷石膏在200℃下煅烧得到建筑石膏粉；
步骤c：将步骤b中的建筑石膏粉与步骤a中热处理改性后的坡缕石混 合，机械搅拌后得到均匀的混合料；
步骤d：将步骤c中的混合料与0.5份氧化钙机械混合均匀，并粉磨成比表面积为4500cm 2/g的混合细料；
步骤e：将步骤d中的混合细料陈化60min；
步骤f：将步骤e中陈化后的混合细料、1.0份改性木薯淀粉、0.2份α-烯基磺酸钠、1.2份聚丙烯酸钠和0.68份水混合，充分搅拌后得到料浆；
步骤g：将料浆平铺在上下护面纸之间，压制成型为9.5mm厚的板材，并将成型后的板材烘干，得到纸面石膏板产品。
对比例1：
与实施例3相比，对比例1的纸面石膏板中没有加入多孔矿物材料，其纸面石膏板的制备方法，包括如下步骤：
步骤a：将100份磷石膏在180℃下煅烧得到建筑石膏粉；
步骤b：将步骤a中的建筑石膏粉与0.5份氧化钙机械混合均匀，并粉磨成比表面积为3800cm 2/g的混合细料；
步骤c：将步骤b中的混合细料陈化30min；
步骤d：将步骤c中陈化后的混合细料、1.0份改性玉米淀粉、0.2份十二烷基硫酸钠、1.2份磺化三聚氰胺和0.65份水混合，充分搅拌后得到料浆；
步骤e：将料浆平铺在上下护面纸之间，压制成型为9.5mm厚的板材，并将成型后的板材烘干，得到纸面石膏板产品。
性能测试
按照推荐性中国国家标准GB/T 9775提供的实验方法对本申请的实施例1至实施例5以及对比例1制造的纸面石膏板进行纵向断裂荷载、横向断裂荷载以及面密度测试，并对纸面石膏板的湿粘结性能进行了定性测试，其测试结果如表1：
表1
Figure PCTCN2019096027-appb-000001
Figure PCTCN2019096027-appb-000002
从表1的数据中可以看出，与对比例1相比，实施例3中的纸面石膏板的纵向和横向断裂荷载均有一定程度的提高，且护面纸与板芯之间的湿粘接性能良好；同时，实施例1至实施例5中纸面石膏板的纵向和横向断裂荷载均高于对比例1，也高于中国国家标准GB/T 9775中的要求，且护面纸与板芯之间的湿粘接性能也优于对比例1，说明本申请实施例的纸面石膏板通过在其中加入多孔矿物材料，提高了纸面石膏板的强度，解决了纸面石膏板中的板芯与护面纸的湿粘结性能不佳的问题。
此外，与对比例1相比，实施例1至实施例5中纸面石膏板的面密度也低于对比例1，故加入多孔矿物材料，也能降低纸面石膏板的面密度，进而使其具有一定的调湿性能。
本公开内容是本申请实施例的原则的示例，并非对本申请作出任何形式上或实质上的限定，或将本申请限定到具体的实施方案。对本领域的技术人员而言，很显然本申请实施例的技术方案的要素、方法和系统等，可以进行变动、改变、改动、演变，而不背离如上所述的本申请的实施例、技术方案的，如权利要求中所定义的原理、精神和范围。这些变动、改变、改动、演变的实施方案均包括在本申请的等同实施例内，这些等同实施例均包括在本申请的由权利要求界定的范围内。虽然可以许多不同形式来使本申请实施例具体化，但此处详细描述的是本申请的一些实施方案。此外，本申请的实施例包括此处所述的各种实施方案的一些或全部的任意可能的组合，也包括在本申请的由权利要求界定的范围内。在本申请中或在任一个引用的专利、引用的专利申请或其它引用的资料中任何地方所提及的所有专利、专利申请和其它引用资料据此通过引用以其整体并入。
以上公开内容规定为说明性的而不是穷尽性的。对于本领域技术人员来说，本说明书会暗示许多变化和可选择方案。所有这些可选择方案和变化旨在被包括在本权利要求的范围内，其中术语“包括”意思是“包括，但不限于”。
在此完成了对本申请可选择的实施方案的描述。本领域技术人员可认识到此处所述的实施方案的其它等效变换，这些等效变换也为由附于本文的权利要求所包括。

Claims (15)

  1. 一种纸面石膏板，所述纸面石膏板的重量份组成包括：磷石膏100份、多孔矿物材料1份至10份、氧化钙0.02份至0.5份、改性淀粉0.6份至1.0份、发泡剂0.06份至0.2份、以及减水剂0.4份至1.2份。
  2. 根据权利要求1所述的纸面石膏板，其中，所述纸面石膏板的重量份组成包括：磷石膏100份、多孔矿物材料3份至5份、氧化钙0.2份至0.3份、改性淀粉0.8份至1.0份、发泡剂0.1份至0.2份、以及减水剂0.5份至0.8份。
  3. 根据权利要求1或2所述的纸面石膏板，其中，所述多孔矿物材料选自沸石、海泡石和坡缕石中的任意一种或多种。
  4. 根据权利要求1至3中任一项所述的纸面石膏板，其中，所述改性淀粉选自改性玉米淀粉、改性大豆淀粉、改性马铃薯淀粉和改性木薯淀粉中的任意一种或多种。
  5. 根据权利要求1至4中任一项所述的纸面石膏板，其中，所述发泡剂选自十二烷基硫酸钠、脂肪醇聚氧乙烯醚硫酸钠和α-烯基磺酸钠中的任意一种或多种。
  6. 根据权利要求1至5中任一项所述的纸面石膏板，其中，所述减水剂选自磺化三聚氰胺、氨基磺酸盐、萘系减水剂和聚羧酸减水剂中的任意一种或多种。
  7. 根据权利要求6所述的纸面石膏板，其中，所述萘系减水剂包括β-萘磺酸甲醛缩合物和β-萘磺酸钠甲醛缩合物中的任意一种或两种。
  8. 根据权利要求6或7所述的纸面石膏板，其中，所述聚羧酸减水剂包括聚丙烯酸盐、聚丙烯酸酯、马来酸-丙烯酸共聚物中的任意一种或多种。
  9. 根据权利要求1至8中任一项所述的纸面石膏板，其中，所述纸面石膏板的厚度为9.5mm至15mm。
  10. 根据权利要求1至9中任一项所述的纸面石膏板的制备方法，所述制备方法包括：
    将所述多孔矿物材料进行热处理改性；
    将所述磷石膏进行煅烧得到建筑石膏粉；
    将所述建筑石膏粉与热处理改性后的多孔矿物材料混合，搅拌后得到均匀的混合料；
    将所述混合料与所述氧化钙混合均匀，并粉磨成混合细料；
    将所述混合细料进行陈化；
    将陈化后的混合细料、所述改性淀粉、所述发泡剂、所述减水剂和适量的水混合，充分搅拌后得到料浆；
    将所述料浆平铺在上下护面纸之间，压制成型，并将成型后的板材烘干，制得所述纸面石膏板。
  11. 根据权利要求10所述的制备方法，其中，所述热处理改性的温度为200℃至400℃。
  12. 根据权利要求10或11所述的制备方法，其中，所述热处理改性的时间为30min至60min。
  13. 根据权利要求10至12中任一项所述的制备方法，其中，煅烧所述磷石膏的温度为160℃至200℃。
  14. 根据权利要求10至13中任一项所述的制备方法，其中，粉磨得到的混合细料的比表面积为3500cm 2/g至4500cm 2/g。
  15. 根据权利要求10至14中任一项所述的制备方法，其中，陈化所述混合细料的时间为15min至60min。
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CN115700232A (zh) * 2022-10-30 2023-02-07 泰山石膏(甘肃)有限公司 一种轻质石膏板及其生产方法
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