CN103626458B - A kind of preparation method of light gypsum base anti-fire door core board - Google Patents

A kind of preparation method of light gypsum base anti-fire door core board Download PDF

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Publication number
CN103626458B
CN103626458B CN201210299757.6A CN201210299757A CN103626458B CN 103626458 B CN103626458 B CN 103626458B CN 201210299757 A CN201210299757 A CN 201210299757A CN 103626458 B CN103626458 B CN 103626458B
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gypsum
water
core board
door core
fire door
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CN103626458A (en
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杨飞华
郝利炜
吴学谦
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Beijing Building Materials Academy of Sciences Research
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Beijing Building Materials Academy of Sciences Research
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Abstract

The invention provides a kind of preparation method of light gypsum base anti-fire door core board, choose alpha-semi water plaster stone, cement blowing agent, staple fibre, grid cloth, water reducer raw material, anti-fire door core board dry density 300 ~ 450kg/m prepared by the present invention 3over dry ultimate compression strength is not less than 1.0MPa, over dry folding strength is not less than 0.5MPa, combustionproperty meets the A1 level fire-protection rating of GB8624-2006 " material of construction and product burns grading performance ", and anti-fire door core board comprehensive cost is low, and production technique is simple, the fire endurance time is long, environment friendly and pollution-free, effectively solve vermiculite fireproof door central layer complex manufacturing, the moisture absorption of magnesia oxychloride cement anti-fire door core board, return halogen return frost problem.

Description

A kind of preparation method of light gypsum base anti-fire door core board
Technical field:
The present invention relates to the production technical field of anti-fire door core board, specifically, relate to a kind of preparation method of light gypsum base anti-fire door core board.
Background technology:
Fire door is by skeleton, and door core packing material and fire prevention five metals are formed, and the packing material of door panel is the core material of fire door, and its quality and performance is particularly important.The packing material tradition of door panel adopts the materials such as rock wool, aluminium silicate wool, mineral wool, pearlite slab, foaming magnesium oxychloride cement plate, cement board.Aluminium silicate wool plate, rock wool, slag wool or glass wool class fireproof door plate, although these material quality are light, heat insulation good, but energy consumption is high in production process, employing organic adhesive is shaping, pollution is produced in production process and use procedure, be difficult to meet the requirement of environmental protection, there is the problems such as anti-fire door core board globality is poor, the fire endurance time is short, poor mechanical property, easily distortion, comprehensive cost is higher, use is inconvenient simultaneously; Perlite fireproof door core board, although fire line is better, sheet material adopts the strong basicity caking agents such as water glass shaping, and be corrosive, tenacity is poor, and product is in the easy breakage of producing and in use procedure; Vermiculite fireproof door central layer, adopts organic or inorganic caking agent shaping, there is complex manufacturing, raw material sources is comparatively large by region restriction, dry density, comprehensive cost is high problem; Though magnesia oxychloride cement anti-fire door core board has the features such as lightweight, intensity are higher, cost is low, its volume instability, moisture absorption, return halogen and return the guardian technique difficult problems such as frost, buckling deformation, fire endurance time is short and never effectively solved; By silicate cement or aluminosulfate cement foam preparation the easily efflorescence of anti-fire door core board surface, later strength is low, stability is poor, has had a strong impact on the quality of fire door.
Summary of the invention:
The object of the present invention is to provide a kind of preparation method of light gypsum base anti-fire door core board, efficiently solve vermiculite fireproof door central layer complex manufacturing, the moisture absorption of magnesia oxychloride cement anti-fire door core board, return halogen return frost problem.
The preparation method realizing a kind of light gypsum base anti-fire door core board of the present invention is:
One, first carry out raw material to choose:
Gypsum: adopt the alpha-semi water plaster stone that chemical gypsum, natural anhydrite or natural dihydrate gypsum are produced, its 2h more than folding strength 6.0MPa, 2h more than ultimate compression strength 50.0MPa, the presetting period is greater than 5min, and standard consistency water requirement is 35 ± 3%;
Cement blowing agent: protein type whipping agent, foam expansion 20 ~ 25 times, the sedimentation of 1h foam is apart from being not more than 10mm, and 1h bleeding quantity is not more than 80ml;
Staple fibre: short glass fiber, shortly cut trevira, shortly cut polypropylene fibre or wood fibre;
Grid cloth: medium-alkali glass fibre grid cloth, alkali free glass fibre grid cloth or alkali-proof glass fiber mesh;
Water reducer: naphthalene water reducer or poly carboxylic acid series water reducer;
Water: tap water or deionized water;
Two, after raw material is selected, column weight amount (%) preparation pressed by the raw material of gypsum base anti-fire door core board slip:
Gypsum 46 ~ 66;
Staple fibre 0.05 ~ 0.18;
Whipping agent 0.42 ~ 0.82;
Water reducer 0 ~ 0.56;
Water 32.3 ~ 52.3;
After the preparation of raw material of three, gypsum base anti-fire door core board slip, gypsum base anti-fire door core board is prepared according to following steps:
(1) prepare foaming agent foam: by whipping agent dilute with water, extension rate is 20 ~ 25 times, by special-purpose air foaming mechanism for going out foaming agent foam;
(2) prepare gypsum mixed slurry: by gypsum, staple fibre, water reducer, be added to the water, stir;
(3) preparation foaming mixed slurry: be mixed into foaming agent foam in gypsum mixed slurry;
(4) making sheet: pour in fire-resistant door core board mold by the foaming mixed slurry stirred, when slip reaches to mould middle height, spreads the grid cloth cut in advance.Natural curing at normal temperatures, obtains the finished product.
Anti-fire door core board dry density 300 ~ 450kg/m prepared by the present invention 3, over dry ultimate compression strength is not less than 1.0MPa, and over dry folding strength is not less than 0.5MPa, meets the A1 level fire-protection rating of GB8624-2006 " material of construction and product burns grading performance ";
Anti-fire door core board comprehensive cost prepared by the present invention is low, and production technique is simple, and the fire endurance time is long, environment friendly and pollution-free, effectively solves vermiculite fireproof door central layer complex manufacturing, the pole moisture absorption of magnesia oxychloride cement fire-resistant door core, returns halogen and returns white problem.
Embodiment
Embodiment 1
The embodiment realizing the preparation method of a kind of light gypsum base anti-fire door core board of the present invention is:
One, first carry out raw material to choose:
Gypsum: adopt the alpha-semi water plaster stone that chemical gypsum is produced, its 2h folding strength 6.2MPa, 2h ultimate compression strength 53.0MPa, presetting period 7min, standard consistency water requirement is 37%;
Cement blowing agent: protein type whipping agent, foam expansion 25 times, the sedimentation of 1h foam is apart from 8mm, 1h bleeding quantity 65ml;
Staple fibre: shortly cut polypropylene fibre;
Grid cloth: medium-alkali glass fibre grid cloth;
Water reducer: naphthalene water reducer;
Water: tap water;
Two, after raw material is selected, column weight amount (%) preparation pressed by the raw material of gypsum base anti-fire door core board slip:
Gypsum 56;
Staple fibre 0.14;
Whipping agent 0.66;
Water reducer 0.5;
Water 42.7;
After the preparation of raw material of three, gypsum base anti-fire door core board slip, gypsum base anti-fire door core board is prepared according to following steps:
(1) prepare foaming agent foam: by whipping agent dilute with water, extension rate is 25 times, by special-purpose air foaming mechanism for going out foaming agent foam;
(2) prepare gypsum mixed slurry: by gypsum, staple fibre, water reducer, be added to the water, stir;
(3) preparation foaming mixed slurry: be mixed into foaming agent foam in gypsum mixed slurry;
(4) making sheet: pour in fire-resistant door core board mold by the foaming mixed slurry stirred, when slip reaches to mould middle height, spreads the grid cloth cut in advance.Natural curing at normal temperatures, obtains the finished product.
Anti-fire door core board dry density 400kg/m prepared by the present invention 3, over dry ultimate compression strength 1.1MPa, over dry folding strength 0.6MPa, meet the A1 level fire-protection rating of GB8624-2006 " material of construction and product burns grading performance ";
Embodiment 2
The embodiment realizing the preparation method of a kind of light gypsum base anti-fire door core board of the present invention is:
One, first carry out raw material to choose:
Gypsum: adopt the alpha-semi water plaster stone that natural anhydrite is produced, its 2h folding strength 6.1MPa, 2h ultimate compression strength 52.0MPa, presetting period 8min, standard consistency water requirement is 36%;
Cement blowing agent: protein type whipping agent, foam expansion 20 times, the sedimentation distance of 1h foam: 8mm, 1h bleeding quantity 70ml;
Staple fibre: short glass fiber;
Grid cloth: alkali-proof glass fiber mesh;
Water reducer: poly carboxylic acid series water reducer;
Water: tap water;
Two, after raw material is selected, column weight amount (%) preparation pressed by the raw material of gypsum base anti-fire door core board slip:
Gypsum 60;
Staple fibre 0.12;
Whipping agent 0.65;
Water reducer 0.13;
Water 39.1;
After the preparation of raw material of three, gypsum base anti-fire door core board slip, gypsum base anti-fire door core board is prepared according to following steps:
(1) prepare foaming agent foam: by whipping agent dilute with water, extension rate is 20 times, by special-purpose air foaming mechanism for going out foaming agent foam;
(2) prepare gypsum mixed slurry: by gypsum, staple fibre, water reducer, be added to the water, stir;
(3) preparation foaming mixed slurry: be mixed into foaming agent foam in gypsum mixed slurry;
(4) making sheet: pour in fire-resistant door core board mold by the foaming mixed slurry stirred, when slip reaches to mould middle height, spreads the grid cloth cut in advance.Natural curing at normal temperatures, obtains the finished product.
Anti-fire door core board dry density 400kg/m prepared by the present invention 3, over dry ultimate compression strength 1.2MPa, over dry folding strength 0.6MPa, meet the A1 level fire-protection rating of GB8624-2006 " material of construction and product burns grading performance ".

Claims (3)

1. a preparation method for light gypsum base anti-fire door core board, is characterized in that: the preparation method of light gypsum base anti-fire door core board is:
One, first carry out raw material to choose:
Gypsum: adopt the alpha-semi water plaster stone that chemical gypsum, natural anhydrite or natural dihydrate gypsum are produced, its 2h more than folding strength 6.0MPa, 2h more than ultimate compression strength 50.0MPa, the presetting period is greater than 5min, and standard consistency water requirement is 35 ± 3%; Cement blowing agent: protein type whipping agent, foam expansion 20 ~ 25 times, the sedimentation of 1h foam is apart from being not more than 10mm, and 1h bleeding quantity is not more than 80ml;
Staple fibre: short glass fiber, shortly cut trevira, shortly cut polypropylene fibre or wood fibre;
Grid cloth: medium-alkali glass fibre grid cloth, alkali free glass fibre grid cloth or alkali-proof glass fiber mesh;
Water reducer: naphthalene water reducer or poly carboxylic acid series water reducer;
Water: tap water or deionized water;
Two, after raw material is selected, column weight amount (%) preparation pressed by the raw material of gypsum base anti-fire door core board slip:
Gypsum 56 ~ 60;
Staple fibre 0.05 ~ 0.18;
Whipping agent 0.42 ~ 0.82;
Water reducer 0 ~ 0.56;
Water 39.1 ~ 42.7;
After the preparation of raw material of three, gypsum base anti-fire door core board slip, gypsum base anti-fire door core board is prepared according to following steps:
(1) prepare foaming agent foam: by whipping agent dilute with water, extension rate is 20 ~ 25 times, by special-purpose air foaming mechanism for going out foaming agent foam;
(2) prepare gypsum mixed slurry: by gypsum, staple fibre, water reducer, be added to the water, stir;
(3) preparation foaming mixed slurry: be mixed into foaming agent foam in gypsum mixed slurry;
(4) making sheet: pour in fire-resistant door core board mold by the foaming mixed slurry stirred, when slip reaches to mould middle height, spreads the grid cloth cut in advance; Natural curing at normal temperatures, obtains the finished product.
2. the preparation method of a kind of light gypsum base anti-fire door core board according to claim 1, is characterized in that: the preparation method of light gypsum base anti-fire door core board is:
One, first carry out raw material to choose:
Gypsum: adopt the alpha-semi water plaster stone that chemical gypsum is produced, its 2h folding strength 6.2MPa, 2h ultimate compression strength 53.0MPa, presetting period 7min, standard consistency water requirement is 37%;
Cement blowing agent: protein type whipping agent, foam expansion 25 times, the sedimentation of 1h foam is apart from 8mm, 1h bleeding quantity 65ml;
Staple fibre: shortly cut polypropylene fibre;
Grid cloth: medium-alkali glass fibre grid cloth;
Water reducer: naphthalene water reducer;
Water: tap water;
Two, after raw material is selected, column weight amount (%) preparation pressed by the raw material of gypsum base anti-fire door core board slip:
Gypsum 56;
Staple fibre 0.14;
Whipping agent 0.66;
Water reducer 0.5;
Water 42.7;
After the preparation of raw material of three, gypsum base anti-fire door core board slip, gypsum base anti-fire door core board is prepared according to following steps:
(1) prepare foaming agent foam: by whipping agent dilute with water, extension rate is 25 times, by special-purpose air foaming mechanism for going out foaming agent foam;
(2) prepare gypsum mixed slurry: by gypsum, staple fibre, water reducer, be added to the water, stir;
(3) preparation foaming mixed slurry: be mixed into foaming agent foam in gypsum mixed slurry;
(4) making sheet: pour in fire-resistant door core board mold by the foaming mixed slurry stirred, when slip reaches to mould middle height, spreads the grid cloth cut in advance; Natural curing at normal temperatures, obtains the finished product.
3. the preparation method of a kind of light gypsum base anti-fire door core board according to claim 1, is characterized in that: lightweight
The preparation method of gypsum base anti-fire door core board is:
One, first carry out raw material to choose:
Gypsum: adopt the alpha-semi water plaster stone that natural anhydrite is produced, its 2h folding strength 6.1MPa, 2h ultimate compression strength 52.0MPa, presetting period 8min, standard consistency water requirement is 36%;
Cement blowing agent: protein type whipping agent, foam expansion 20 times, the sedimentation distance of 1h foam: 8mm, 1h bleeding quantity 70ml;
Staple fibre: short glass fiber;
Grid cloth: alkali-proof glass fiber mesh;
Water reducer: poly carboxylic acid series water reducer;
Water: tap water;
Two, after raw material is selected, column weight amount (%) preparation pressed by the raw material of gypsum base anti-fire door core board slip:
Gypsum 60;
Staple fibre 0.12;
Whipping agent 0.65;
Water reducer 0.13;
Water 39.1;
After the preparation of raw material of three, gypsum base anti-fire door core board slip, gypsum base anti-fire door core board is prepared according to following steps:
(1) prepare foaming agent foam: by whipping agent dilute with water, extension rate is 20 times, by special-purpose air foaming mechanism for going out foaming agent foam;
(2) prepare gypsum mixed slurry: by gypsum, staple fibre, water reducer, be added to the water, stir;
(3) preparation foaming mixed slurry: be mixed into foaming agent foam in gypsum mixed slurry;
(4) making sheet: pour in fire-resistant door core board mold by the foaming mixed slurry stirred, when slip reaches to mould middle height, spreads the grid cloth cut in advance; Natural curing at normal temperatures, obtains the finished product.
CN201210299757.6A 2012-08-22 2012-08-22 A kind of preparation method of light gypsum base anti-fire door core board Active CN103626458B (en)

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CN107459367B (en) * 2017-07-19 2020-10-02 山西大美至善石膏设备股份有限公司 Method for manufacturing lightweight paperless gypsum board
CN107337419B (en) * 2017-07-19 2020-10-02 山西大美至善石膏设备股份有限公司 Method for manufacturing gypsum board without paper surface
CN108373307B (en) * 2018-01-12 2020-12-01 北京建筑材料科学研究总院有限公司 Gypsum powder and application thereof
CN108298941A (en) * 2018-01-23 2018-07-20 合肥伊只门窗有限公司 A kind of anti-fire door core board and preparation method thereof
CN108640704A (en) * 2018-05-07 2018-10-12 重庆威智旺门窗有限责任公司 A kind of gypsum based phase-change material anti-fire door core board and preparation method thereof
CN108947446A (en) * 2018-09-20 2018-12-07 博瑞新材(北京)科技有限公司 A kind of gypsum base fire-proof plate and preparation method thereof
CN109180123A (en) * 2018-09-20 2019-01-11 博瑞新材(北京)科技有限公司 A kind of gypsum base anti-fire door core board and preparation method thereof
CN110498642A (en) * 2019-09-05 2019-11-26 许言言 A kind of sandwich parts light energy conservation material, preparation method and applications
CN110950621A (en) * 2019-12-16 2020-04-03 湖南昌迅科技环保股份有限公司 Gypsum foamed door core board and preparation method thereof

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CN101274835A (en) * 2008-05-21 2008-10-01 昆明理工大学 Micro-foaming light gypsum decorative material
CN101532328A (en) * 2009-03-02 2009-09-16 孙小力 Mothproof and fireproof plasterboard with glass fiber surface and manufacturing method thereof
EP2161122A1 (en) * 2008-08-29 2010-03-10 OCV Intellectual Capital, LLC Wucs fibers having improved flowing and dispersing properties
CN101705734A (en) * 2009-11-10 2010-05-12 陶春森 Environment-friendly high-strength fibrous gypsum board

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1803427A (en) * 2006-01-23 2006-07-19 山东泰和东新股份有限公司 Method for producing paper gypsum board using desulfurated gypsum and ardealite
CN101274835A (en) * 2008-05-21 2008-10-01 昆明理工大学 Micro-foaming light gypsum decorative material
EP2161122A1 (en) * 2008-08-29 2010-03-10 OCV Intellectual Capital, LLC Wucs fibers having improved flowing and dispersing properties
CN101532328A (en) * 2009-03-02 2009-09-16 孙小力 Mothproof and fireproof plasterboard with glass fiber surface and manufacturing method thereof
CN101705734A (en) * 2009-11-10 2010-05-12 陶春森 Environment-friendly high-strength fibrous gypsum board

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