CN109942267A - A kind of gypsum base composite light thermal insulation mortar and preparation method thereof - Google Patents

A kind of gypsum base composite light thermal insulation mortar and preparation method thereof Download PDF

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Publication number
CN109942267A
CN109942267A CN201910345464.9A CN201910345464A CN109942267A CN 109942267 A CN109942267 A CN 109942267A CN 201910345464 A CN201910345464 A CN 201910345464A CN 109942267 A CN109942267 A CN 109942267A
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parts
water
thermal insulation
base composite
composite light
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CN109942267B (en
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李东旭
贺诚
徐玲玲
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Nanjing University of Science and Technology
Nanjing Tech University
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Nanjing University of Science and Technology
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Abstract

The present invention provides a kind of gypsum base composite light thermal insulation mortars; it includes the component of following parts by weight: 60-80 parts of land plaster; 1-2 parts of granular polystyrene, 10-15 parts of glass bead, 5-10 parts of cement; 1-2 parts of redispersable latex powder; 0.2-0.6 parts of water-retaining agent, 0.2-0.6 parts of calcium sulphate retarder, 0.3-0.8 parts of water-reducing agent; 0.2-0.8 parts of polypropylene fibre, 60-80 parts of water.The present invention selects suitable grain composition to mix using glass bead and granular polystyrene; then in conjunction with semi-hydrated gypsum; preparation method is simple; reduce gel material content; it is low in cost; dry density is reduced, there is high cracking resistance energy, low shrinkage and deformation, high ductibility and good workability, and self compacting ability is good, excellent thermal insulation performance.

Description

A kind of gypsum base composite light thermal insulation mortar and preparation method thereof
Technical field
The invention belongs to building material technical fields, and in particular to a kind of gypsum base composite light thermal insulation mortar and its preparation Method.
Background technique
The annual discharge amount of China's industry by-product gypsum up to hundred million tons or more, banked up throughout the year by most industry by-product gypsum Outside, a large amount of soil is occupied, surrounding enviroment are polluted, for this purpose, how to make full use of industry by-product gypsum, it has also become build One task of material industry.
As the improvement of people's living standards, widely using air-conditioning and floor heating indoors.Existing building thermal insulation material It is chiefly used in wall, therefore still has considerable heat to spread out of by floor, increases energy consumption, and existing ground insulating Material, caking property is weak, and intensity is low, poor thermal insulation property, is easy moisture absorption expansion, and contraction distortion is easy after drying, and is thus meeting The problems such as crack of generation crack, concrete and cement moisture expantion will cause geothermal heating ground surface uneven heating, then just like The specific gravity of thermal insulation material made of solidifying soil-cement material is larger, and ground can be greatly increased by being laid with such material as insulating layer With the load of floor.
Summary of the invention
It is an object of the invention to solve to improve deficiency existing for thermal insulation material in the prior art, it is multiple to provide a kind of gypsum base Light heat-insulation mortar is closed, not only intensity is high for the thermal insulation mortar, and fluidity is good, and density is small, good heat insulating, and self compacting ability It is good, there is high ductibility, convenient for construction.
Another object of the present invention is to provide the preparation methods of above-mentioned gypsum base composite light thermal insulation mortar.
Technical solution
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: 60-80 parts of land plaster, polyphenyl 1-2 parts of particle, 10-15 parts of glass bead, 5-10 parts of cement, 1-2 parts of redispersable latex powder, 0.2-0.6 parts of water-retaining agent, stone 0.2-0.6 parts of cream retarder, 0.3-0.8 parts of water-reducing agent, 0.2-0.8 parts of polypropylene fibre, 60-80 parts of water.
The cement is ordinary portland cement or portland cement;The length < 10mm of the polypropylene fibre, major diameter Than for 10~50:1.
Further, any one of the land plaster in alpha-semi water plaster stone powder or β-semi-hydrated gypsum powder, land plaster Specific surface area is 300-400m2/kg。
Further, the average grain diameter of the granular polystyrene is 3-5mm, bulk density 11-15kg/m3
Further, the average grain diameter of the glass bead particle is 0.2-0.3mm, bulk density 170-190kg/m3
Further, when the cement is ordinary portland cement, preferably PO42.5 cement, the cement are silicate cement When mud, preferably II 52.5 cement of P.
Further, the redispersable latex powder is vinyl acetate-ethylene copolymer, preferably watt gram5044N vinyl acetate-ethylene copolymer or watt gram6020N vinylacetate-ethylene One of copolymerization.
Further, the water-reducing agent is in PC-1016 type polycarboxylic acids powder water-reducing agent or HY type polycarboxylic acids powder water-reducing agent One kind.
Further, the water-retaining agent is hydroxypropyl methyl cellulose ether, and viscosity is 60000~100000mpa.s.
Further, the calcium sulphate retarder is one of plant proteins calcium sulphate retarder or citric acid.
The preparation method of above-mentioned gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, redispersible cream Rubber powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, in 60-80 revs/min turn Under speed, it is mixed 5-15 minutes, granular polystyrene, glass bead and water is then added, continues to mix stirring 5-15 minutes, i.e., Obtain gypsum base composite light thermal insulation mortar.
Beneficial effects of the present invention: the present invention provides a kind of gypsum base composite light thermal insulation mortar, the present invention uses glass Change microballon and granular polystyrene selects suitable grain composition mixing, then in conjunction with semi-hydrated gypsum, preparation method is simple, reduces Gel material content, it is low in cost, dry density is reduced, there is high cracking resistance energy, low shrinkage and deformation, high ductibility and good Good workability, and self compacting ability is good, excellent thermal insulation performance.The present invention improves vitrified microsphere insulating material particle The disadvantages of partial size is small, and dust content is high, and water absorption rate is high, and sphericity is poor, and vitreous degree is insufficient, bad mechanical property;Improve polyphenyl The disadvantages such as grain thermal insulation material particle is single, and gradation is poor, and heatproof is low, and intensity is low, and anti-aging property is low;Improve expanded pearlite suction Water rate large surface is easy to produce phenomena such as hollowing, cracking.
Specific embodiment
Below by specific embodiment, the invention will be further described.
Embodiment 1
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: land plaster (β-semi-hydrated gypsum Powder, specific surface area 340m2/ kg) 70 parts, granular polystyrene (average grain diameter 3-5mm, bulk density 11-15kg/m3) 1.5 parts, vitreous Microballon (0.2-0.3mm, bulk density 170-190kg/m3) 11 parts, 7 parts of cement (II 52.5 cement of P), redispersable latex powder (watt Gram6020N vinyl acetate-ethylene copolymer) 1.5 parts, (hydroxypropyl methyl cellulose ether glues water-retaining agent Degree is 0.45 part of 80000mpa.s), 0.4 part of calcium sulphate retarder (plant proteins calcium sulphate retarder), PC-1016 type polycarboxylic acids 0.5 part of powder water-reducing agent, 0.5 part, 65 parts of water of polypropylene fibre (length < 10mm, 10~50:1 of draw ratio).
The preparation method of gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, Redispersable latex Powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, under 60 revs/min of revolving speed, It is mixed 10 minutes, granular polystyrene, glass bead and water is then added, stirring 10 is continuesd to mix under 70 revs/min of revolving speed Minute is to get gypsum base composite light thermal insulation mortar.
Embodiment 2
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: land plaster (β-semi-hydrated gypsum Powder, specific surface area 340m2/ kg) 69 parts, granular polystyrene (average grain diameter 3-5mm, bulk density 11-15kg/m3) 1.6 parts, vitreous Microballon (0.2-0.3mm, bulk density 170-190kg/m3) 12 parts, 7 parts of cement (II 52.5 cement of P), redispersable latex powder (watt Gram6020N vinyl acetate-ethylene copolymer) 1.6 parts, (hydroxypropyl methyl cellulose ether glues water-retaining agent Degree is 0.48 part of 80000mpa.s), and 0.4 part of calcium sulphate retarder (plant proteins calcium sulphate retarder), HY type polycarboxylic acids powder subtracts 0.54 part of aqua, 0.5 part, 68 parts of water of polypropylene fibre (length < 10mm, 10~50:1 of draw ratio).
The preparation method of gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, Redispersable latex Powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, under 60 revs/min of revolving speed, It is mixed 10 minutes, granular polystyrene, glass bead and water is then added, stirring 10 is continuesd to mix under 70 revs/min of revolving speed Minute is to get gypsum base composite light thermal insulation mortar.
Embodiment 3
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: land plaster (β-semi-hydrated gypsum Powder, specific surface area 340m2/ kg) 72 parts, granular polystyrene (average grain diameter 3-5mm, bulk density 11-15kg/m3) 1.5 parts, vitreous Microballon (0.2-0.3mm, bulk density 170-190kg/m3) 11 parts, 7.1 parts of cement (II 52.5 cement of P), redispersable latex powder (Wa Ke6020N vinyl acetate-ethylene copolymer) 1.56 parts, water-retaining agent (hydroxypropyl methyl cellulose Ether, viscosity 100000mpa.s) 0.5 part, 0.25 part of calcium sulphate retarder (citric acid), PC-1016 type polycarboxylic acids powder diminishing 0.46 part of agent, 0.51 part, 66 parts of water of polypropylene fibre (length < 10mm, 10~50:1 of draw ratio).
The preparation method of gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, Redispersable latex Powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, under 60 revs/min of revolving speed, It is mixed 10 minutes, granular polystyrene, glass bead and water is then added, stirring 10 is continuesd to mix under 70 revs/min of revolving speed Minute is to get gypsum base composite light thermal insulation mortar.
Embodiment 4
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: land plaster (β-semi-hydrated gypsum Powder, specific surface area 340m2/ kg) 73 parts, granular polystyrene (average grain diameter 3-5mm, bulk density 11-15kg/m3) 1.5 parts, vitreous Microballon (0.2-0.3mm, bulk density 170-190kg/m3) 12 parts, 7.2 parts of cement (II 52.5 cement of P), redispersable latex powder (Wa Ke5044 vinyl acetate-ethylene copolymer) 1.8 parts, water-retaining agent (hydroxypropyl methyl cellulose ether, viscosity It is 0.39 part of 100000mpa.s), 0.4 part of calcium sulphate retarder (plant proteins calcium sulphate retarder), PC-1016 type polycarboxylic acids powder Leniently convict somebody 0.44 part of aqua, 0.5 part, 67 parts of water of polypropylene fibre (length < 10mm, 10~50:1 of draw ratio).
The preparation method of gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, Redispersable latex Powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, under 60 revs/min of revolving speed, It is mixed 10 minutes, granular polystyrene, glass bead and water is then added, stirring 10 is continuesd to mix under 70 revs/min of revolving speed Minute is to get gypsum base composite light thermal insulation mortar.
Embodiment 5
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: land plaster (β-semi-hydrated gypsum Powder, specific surface area 340m2/ kg) 68 parts, granular polystyrene (average grain diameter 3-5mm, bulk density 11-15kg/m3) 1.6 parts, vitreous Microballon (0.2-0.3mm, bulk density 170-190kg/m3) 11 parts, 7.6 parts of cement (PO42.5 cement), redispersable latex powder (watt Gram6020N vinyl acetate-ethylene copolymer) 1.6 parts, (hydroxypropyl methyl cellulose ether glues water-retaining agent Degree is 0.48 part of 100000mpa.s), 0.3 part of calcium sulphate retarder (plant proteins calcium sulphate retarder), PC-1016 type polycarboxylic acids 0.45 part of powder water-reducing agent, 0.5 part, 64 parts of water of polypropylene fibre (length < 10mm, 10~50:1 of draw ratio).
The preparation method of gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, Redispersable latex Powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, under 60 revs/min of revolving speed, It is mixed 10 minutes, granular polystyrene, glass bead and water is then added, stirring 10 is continuesd to mix under 70 revs/min of revolving speed Minute is to get gypsum base composite light thermal insulation mortar.
Embodiment 6
A kind of gypsum base composite light thermal insulation mortar comprising the component of following parts by weight: land plaster (alpha-semi water plaster stone Powder, specific surface area 340m2/ kg) 72 parts, granular polystyrene (average grain diameter 3-5mm, bulk density 11-15kg/m3) 1.7 parts, vitreous Microballon (0.2-0.3mm, bulk density 170-190kg/m3) 13 parts, 7.3 parts of cement (II 52.5 cement of P), redispersable latex powder (Wa Ke6020N vinyl acetate-ethylene copolymer) 1.7 parts, water-retaining agent (hydroxypropyl methyl cellulose ether, Viscosity is 100000mpa.s) 0.49 part, 0.4 part of calcium sulphate retarder (plant proteins calcium sulphate retarder), the poly- carboxylic of PC-1016 type 0.48 part of sour powder water-reducing agent, 0.5 part, 68 parts of water of polypropylene fibre (length < 10mm, 10~50:1 of draw ratio).
The preparation method of gypsum base composite light thermal insulation mortar: by weight by land plaster, cement, Redispersable latex Powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre are put into mortar mixer, under 60 revs/min of revolving speed, It is mixed 10 minutes, granular polystyrene, glass bead and water is then added, stirring 10 is continuesd to mix under 70 revs/min of revolving speed Minute is to get gypsum base composite light thermal insulation mortar.
Gypsum base composite light thermal insulation mortar made from embodiment 1-6 is tested for the property, and and vitrified micro-bead heat preserving Material and heat insulating granular polystyrene material compare, and the results are shown in Table 1:
Table 1
It can be seen that the gypsum base composite light thermal insulating material of preparation of the embodiment of the present invention by the technical indicator tested above Material reduces by 17% compared to glass bead gypsum base thermal insulation material dry density, and thermal coefficient reduces by 24%, and water absorption rate reduces by 16%, Compared to granular polystyrene gypsum base thermal insulation material compression strength enhancing 21%, gypsum base Composite lightweight thermal insulation material system of the invention It is standby simple, gel material content is reduced, low in cost, reduction dry density, high cracking resistance energy, low shrinkage and deformation, high ductibility, Self compacting ability is good, excellent thermal insulation performance, and has good workability, is a kind of novel environment-protective energy-saving construction material.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those skilled in the art within the technical scope disclosed by the invention, the variation that can be expected without creative work Or replacement, it should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with claims Defined by subject to protection scope.

Claims (10)

1. a kind of gypsum base composite light thermal insulation mortar, which is characterized in that it includes the component of following parts by weight: land plaster 60- 80 parts, 1-2 parts of granular polystyrene, 10-15 parts of glass bead, 5-10 parts of cement, 1-2 parts of redispersable latex powder, water-retaining agent 0.2- 0.6 part, 0.2-0.6 parts of calcium sulphate retarder, 0.3-0.8 parts of water-reducing agent, 0.2-0.8 parts of polypropylene fibre, 60-80 parts of water;
The cement is ordinary portland cement or portland cement;The length < 10mm of the polypropylene fibre, draw ratio are 10~50:1.
2. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the land plaster is selected from α-half water stone Any one in cream powder or β-semi-hydrated gypsum powder, the specific surface area of land plaster are 300-400m2/kg。
3. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the average grain diameter of the granular polystyrene For 3-5mm, bulk density 11-15kg/m3
4. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the glass bead particle is averaged Partial size is 0.2-0.3mm, bulk density 170-190kg/m3
5. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the cement be PO42.5 cement or Any one in II 52.5 cement of P.
6. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the redispersable latex powder is watt Gram5044N vinyl acetate-ethylene copolymer or watt gram6020N vinylacetate-second Alkene copolymerization in any one.
7. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the water-reducing agent is PC-1016 type One of polycarboxylic acids powder water-reducing agent or HY type polycarboxylic acids powder water-reducing agent.
8. gypsum base composite light thermal insulation mortar as described in claim 1, which is characterized in that the water-retaining agent is hydroxypropyl methyl Cellulose ether, viscosity are 60000~100000mpa.s.
9. the gypsum base composite light thermal insulation mortar as described in any one of claim 1 to 8, which is characterized in that the gypsum slow setting Agent is one of plant proteins calcium sulphate retarder or citric acid.
10. the preparation method of any one of claim 1 to the 9 gypsum base composite light thermal insulation mortar, which is characterized in that by weight It measures part and land plaster, cement, redispersable latex powder, water-retaining agent, calcium sulphate retarder, water-reducing agent, polypropylene fibre is put into sand Starch blender in, under 60-80 revs/min of revolving speed, be mixed 5-15 minute, then addition granular polystyrene, glass bead and Water continuess to mix stirring 5-15 minutes to get gypsum base composite light thermal insulation mortar.
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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN111233416A (en) * 2020-01-15 2020-06-05 重庆建大建筑材料有限公司 Anti-cracking gypsum-based light material
CN111233415A (en) * 2020-01-15 2020-06-05 重庆建大建筑材料有限公司 Anti-cracking gypsum-based plastering mortar and preparation method thereof
CN111268983A (en) * 2019-12-02 2020-06-12 江苏吉邦材料科技有限公司 Application of closed-cell vitrified micro bubbles and light gypsum mortar using same and easy to detect bubble hollowing
CN111574182A (en) * 2020-05-21 2020-08-25 贵州开磷磷石膏综合利用有限公司 3D printing gypsum-based floor heating module and manufacturing method thereof
CN111620713A (en) * 2020-05-21 2020-09-04 贵州开磷磷石膏综合利用有限公司 Phosphogypsum-based light heat-preservation floor heating module and preparation method thereof
CN111960707A (en) * 2020-06-12 2020-11-20 江苏吉邦材料科技有限公司 Application of sierozem powder and anti-crack gypsum mortar
CN112321234A (en) * 2020-11-11 2021-02-05 南京工业大学 Composite heat-preservation paving plate and preparation method thereof

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CN103739264A (en) * 2014-01-02 2014-04-23 同济大学 Hydrophobic desulfurization gypsum based EPS (Expandable Polystyrene) heat preservation mortar
CN105541251A (en) * 2015-12-22 2016-05-04 南京工业大学 Gypsum-based floor thermal insulation material

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CN101560081A (en) * 2008-04-18 2009-10-21 上海盛旋新型建材有限公司 Preparation method of exterior wall bonding powder polystyrene granule insulating mortar
US20120174829A1 (en) * 2010-06-12 2012-07-12 Shenzhen Grandland Decoration Group Co., Ltd. Light Mortar Materials and Method of Use
US20120240384A1 (en) * 2011-03-25 2012-09-27 MIROGLIO TEXTILE S.r.l. Process for decorating the surface of a substrate with a three-dimensional and tactile effect
CN103739264A (en) * 2014-01-02 2014-04-23 同济大学 Hydrophobic desulfurization gypsum based EPS (Expandable Polystyrene) heat preservation mortar
CN105541251A (en) * 2015-12-22 2016-05-04 南京工业大学 Gypsum-based floor thermal insulation material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111268983A (en) * 2019-12-02 2020-06-12 江苏吉邦材料科技有限公司 Application of closed-cell vitrified micro bubbles and light gypsum mortar using same and easy to detect bubble hollowing
CN111233416A (en) * 2020-01-15 2020-06-05 重庆建大建筑材料有限公司 Anti-cracking gypsum-based light material
CN111233415A (en) * 2020-01-15 2020-06-05 重庆建大建筑材料有限公司 Anti-cracking gypsum-based plastering mortar and preparation method thereof
CN111574182A (en) * 2020-05-21 2020-08-25 贵州开磷磷石膏综合利用有限公司 3D printing gypsum-based floor heating module and manufacturing method thereof
CN111620713A (en) * 2020-05-21 2020-09-04 贵州开磷磷石膏综合利用有限公司 Phosphogypsum-based light heat-preservation floor heating module and preparation method thereof
CN111960707A (en) * 2020-06-12 2020-11-20 江苏吉邦材料科技有限公司 Application of sierozem powder and anti-crack gypsum mortar
CN112321234A (en) * 2020-11-11 2021-02-05 南京工业大学 Composite heat-preservation paving plate and preparation method thereof

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