WO2021031502A1 - 一种多功能石膏基砂浆及其制备方法 - Google Patents

一种多功能石膏基砂浆及其制备方法 Download PDF

Info

Publication number
WO2021031502A1
WO2021031502A1 PCT/CN2019/129855 CN2019129855W WO2021031502A1 WO 2021031502 A1 WO2021031502 A1 WO 2021031502A1 CN 2019129855 W CN2019129855 W CN 2019129855W WO 2021031502 A1 WO2021031502 A1 WO 2021031502A1
Authority
WO
WIPO (PCT)
Prior art keywords
parts
gypsum
based mortar
diatomaceous earth
powder
Prior art date
Application number
PCT/CN2019/129855
Other languages
English (en)
French (fr)
Inventor
黄天勇
王肇嘉
张文才
李寅明
章银祥
陈旭峰
Original Assignee
北京建筑材料科学研究总院有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京建筑材料科学研究总院有限公司 filed Critical 北京建筑材料科学研究总院有限公司
Priority to US16/812,276 priority Critical patent/US11091395B2/en
Publication of WO2021031502A1 publication Critical patent/WO2021031502A1/zh

Links

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
    • C04B28/144—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 a flue gas desulfurization product
    • 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
    • C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Definitions

  • the invention relates to a gypsum-based mortar, in particular to a gypsum-based mortar with functions of adsorbing formaldehyde and purifying air.
  • the invention also provides a preparation method of the gypsum-based mortar.
  • Indoor air purification materials are divided into: 1Physical purification materials, including activated carbon, silica gel, zeolite, etc.; among them, activated carbon has a better adsorption function and is the most widely used, but the adsorption is slower and the adsorption index for low-concentration harmful gases is low.
  • 2 chemical purification materials the application of a large plane is a photocatalyst material, of TiO 2 as a representative, but requires ultraviolet irradiation, is limited; the other is a negative material, negative ions by a redox reaction with harmful gases, thereby eliminating the harmful substances.
  • 3Biological purification materials mainly use green plants and biological enzymes to purify the air.
  • the main air purification products on the market are: air purifiers, purification coatings, spray-type liquid agents, and solid adsorption materials.
  • coating products are mostly used.
  • the paint-type organic material products have poor aging resistance. At present, most of them are diatomite decoration materials, and most of them are technology and materials imported from Korea and Japan.
  • the product is more alkaline, which affects the physical and mental health of users.
  • the product has poor water resistance and long-term durability needs to be improved. Therefore, it is necessary to develop multifunctional inorganic solid purification materials.
  • the present invention provides a gypsum-based mortar, which mainly includes the following components by weight: 30-40 parts of gypsum, 30-40 parts of diatomaceous earth, and nanometer titanium dioxide 0.5-3.0 parts, 30-40 parts of fine aggregate.
  • Gypsum is the basis for the formation of mechanical properties of mortar.
  • the hydration structure formed by its hydration has more fine pore structure and has a certain formaldehyde adsorption function.
  • Diatomite has the characteristics of being loose, light, porous, pores are mainly mesopores, and the distribution of voids is regular, so it has an excellent adsorption effect on formaldehyde.
  • the present invention unexpectedly found that after mixing a specific proportion of gypsum and diatomaceous earth, the hydration structure of the gypsum-based cementitious material and the diatomaceous earth structure enable the gypsum-based mortar to have a formaldehyde adsorption performance of more than 75%, which significantly improves the Absorption capacity of formaldehyde.
  • the present invention further adds an appropriate proportion of nano-titanium dioxide, which can decompose the formaldehyde adsorbed by the above porous structure, thereby maintaining the persistence and long-term effect of adsorption.
  • the gypsum-based mortar described above mainly includes the following components by weight: 30-35 parts by weight of gypsum, 30-35 parts of diatomaceous earth, 1.0-2.0 parts of nano-titanium dioxide, and 30-40 parts of fine aggregate; preferably gypsum 31.015 parts, 32 parts of diatomaceous earth, 1.5 parts of nano titanium dioxide, 30 parts of fine aggregate.
  • the gypsum-based mortar also includes anion powder in an amount of 2-8 parts, preferably 3-7 parts, more preferably 4.5 parts.
  • the gypsum-based mortar of the present invention can also contain inorganic pigments, and the amount can be adjusted according to needs.
  • the gypsum-based mortar of the present invention contains 0.1-1.0 part of inorganic pigment; in some embodiments, it is 0.1 part, 0.5 part, and 1.0 part, respectively.
  • the gypsum-based mortar of the present invention also contains one or more of water-reducing agent, dispersant, gypsum retarder, water-retaining agent, defoamer, etc.
  • the amount or specific type can be selected according to needs.
  • the gypsum-based mortar includes the following components by weight: 30-40 parts of gypsum, 30-40 parts of diatomaceous earth, 30-40 parts of fine aggregate, and 2-8 parts of anion powder Parts, 0.5-3.0 parts of nano-titanium dioxide, 0.10-0.15 parts of polycarboxylic acid water reducing agent, 0.05-0.15 parts of redispersible latex powder, 0.025-0.045 parts of gypsum retarder, 0.05-0.10 parts of water retention agent, 0.10 parts of defoamer -0.20 parts, 0.1-1.0 parts of inorganic pigments.
  • the gypsum-based mortar of the preferred formula has the functions of adsorbing formaldehyde to purify air, releasing negative oxygen ions to adjust humidity, and presenting decorative environments with different colors.
  • the gypsum-based mortar preferably includes the following components in parts by weight: 30-35 parts of gypsum, 30-35 parts of diatomaceous earth, 30-35 parts of fine aggregate, 3-7 parts of anion powder, 1.0-2.0 parts of nano titanium dioxide , Polycarboxylic acid water reducing agent 0.10-0.15 parts, redispersible latex powder 0.08-0.12 parts, gypsum retarder 0.025-0.040 parts, water retaining agent 0.05-0.10 parts; defoaming agent 0.10-0.20 parts, inorganic pigments 0.1- 1.0 copies.
  • the gypsum-based mortar further preferably includes the following components by weight: 31.015 parts of gypsum, 32 parts of diatomaceous earth, 30 parts of fine aggregate, 4.5 parts of anion powder, 1.5 parts of nano-titanium dioxide, and 0.12 parts of polycarboxylic acid water reducing agent Parts, 0.1 part of redispersible latex powder, 0.035 part of gypsum retarder, 0.08 part of water retention agent, 0.15 part of defoamer, 0.5 part of inorganic pigment.
  • the gypsum-based mortar of the present invention further preferably has a total weight of 100 parts.
  • the gypsum is alpha or beta hemihydrate gypsum; preferably desulfurized hemihydrate gypsum.
  • the diatomaceous earth is non-calcined or calcined diatomaceous earth, and its SiO 2 mass percentage content is ⁇ 70%; preferably, non-calcined diatomaceous earth. More preferably, the mass percentage of SiO 2 in the diatomite is 75%-85%.
  • the diameter of the nanometer titanium dioxide is ⁇ 100 nanometers, and more preferably, the diameter is 10 nanometers to 30 nanometers.
  • the fine aggregate is natural river sand, machine-made sand or tailing sand; preferably natural river sand.
  • natural sand is used, which is a combination of two natural sands of 40-70 mesh and 70-140 mesh (greater than 70 mesh) in a ratio of 2:1.
  • the advantage is that the aggregates tend to be tightly packed to improve the performance of gypsum mortar, and at the same time, the amount of gypsum and diatomaceous earth can be increased to improve the formaldehyde purification rate of gypsum mortar.
  • the anion powder has a rare earth content ⁇ 60%, and a tourmaline powder content ⁇ 20%.
  • the anion powder has a rare earth content of 70%-80%, and a tourmaline powder content of 20%-30%.
  • the water reducing agent is a polycarboxylic acid water reducing agent.
  • the polycarboxylic acid water reducing agent includes one or more of ether type polycarboxylic acid water reducing agent and ester type polycarboxylic acid water reducing agent.
  • the dispersant is redispersible latex powder.
  • the redispersible latex powder includes copolymer rubber powder of vinyl acetate and ethylene, ternary copolymer rubber powder of ethylene, vinyl chloride and vinyl laurate, and ternary copolymer rubber powder of vinyl acetate and ethylene and higher fatty acid vinyl ester.
  • copolymer rubber powder of vinyl acetate and ethylene ternary copolymer rubber powder of ethylene, vinyl chloride and vinyl laurate
  • ternary copolymer rubber powder of vinyl acetate and ethylene and higher fatty acid vinyl ester One or more of rubber powder.
  • the gypsum retarder includes one or more of tartaric acid, citric acid, sodium gluconate, and bone glue protein gypsum retarder.
  • the water retaining agent includes one or more of methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, and hydroxypropyl methyl cellulose.
  • the defoamer includes one or more of polyether defoamers, higher alcohol fatty acid ester complexes, and polyether modified silicon.
  • the inorganic pigment includes one or more of metal oxides, chromates, carbonates, sulfates and sulfides.
  • the gypsum, diatomaceous earth, fine aggregate, nano-titanium dioxide, anion powder, redispersible latex powder, retarder, water retaining agent, defoamer, and inorganic pigment can all be commercially available.
  • the preparation method of the gypsum-based mortar of the present invention includes fully stirring and mixing each component uniformly.
  • the gypsum-based mortar of the present invention When the gypsum-based mortar of the present invention is used, a certain proportion of water is added, and it can be used after stirring; preferably, the amount of water added is 60%-80% of its weight.
  • the present invention also includes the application of the above-mentioned gypsum-based mortar to interior wall decoration in a non-humid environment.
  • the present invention is based on the following principles:
  • the gypsum-based mortar of the present invention first selects gypsum as the inorganic cementing material, which is the basis for the formation of mechanical properties of the mortar.
  • the hydration structure formed by the hydration of gypsum also has more microporous structures; diatomaceous earth is a kind of biogenic silica Sedimentary rocks, due to their looseness, light weight, porosity, mainly mesoporous pores, regular pore distribution, etc., have excellent adsorption effect on formaldehyde; but the porous structure of diatomaceous earth only has the function of adsorption, so it needs to be added Nano-titanium dioxide catalyst decomposes the adsorbed formaldehyde of porous structures such as diatomaceous earth to maintain the persistence of adsorption; negative ion powder releases negative ions, which are ions with one or more negative charges, which can reduce atmospheric pollutants and nitrogen Active oxygen produced by oxides, cigarettes, etc., reduces the
  • the combination of different inorganic pigments It can meet the requirements of different color decoration. Based on the functional characteristics of various raw materials, a reasonable combination is made to prepare a gypsum-based mortar that can absorb formaldehyde to purify the air, release negative oxygen ions to adjust humidity, and present a decorative environment with different colors.
  • nano-titanium dioxide catalyst makes the formaldehyde purification durability of gypsum-based mortar reach more than 70%.
  • the present invention utilizes the functional characteristics of various raw materials to prepare multifunctional gypsum-based mortars such as purification, humidity control and decoration to meet various performance requirements. .
  • the desulfurized semi-hydrated gypsum was purchased from Shandong Pingyi Jindun Gypsum Products Co., Ltd.; the high-strength gypsum: initial setting time>6min, final setting time ⁇ 30min, 2h flexural strength ⁇ 5MPa, 2h compressive strength ⁇ 10MPa.
  • the non-calcined diatomite was purchased from Jilin Yuantong Diatomite Company.
  • the pore structure of the diatomite was slit-like, the specific surface area was 4100m 2 /g, and the average pore diameter was 9.64 nm.
  • the fine aggregate is purchased from natural sand in Weichang, Hebei, which is composed of two natural sands of 40-70 mesh and 70-140 mesh (greater than 70 mesh) in a 2:1 ratio.
  • the negative ion powder was purchased from Shijiazhuang chilin Mineral Products Co., Ltd., with a particle size of 1500 mesh and an off-white color.
  • the nano titanium dioxide catalyst was purchased from Jingrui New Materials Co., Ltd., and was anatase titanium dioxide with a hardness of 5.5 to 6.0.
  • the high-efficiency polycarboxylic acid water reducing agent was purchased from Suzhou Xingbang Chemical Building Material Co., Ltd.; the redispersible latex powder was purchased from Jinan Yuekai Chemical Co., Ltd.; the gypsum retarder was purchased from Nanjing Stebao Trading Co., Ltd.; the water retaining agent was purchased From Shandong Sunok Chemical Co., Ltd.; polyether defoamer was purchased from Beijing Jinyuan Donghe Chemical Co., Ltd.; inorganic pigments were purchased from Tianjin Shengguangming Pigment Co., Ltd.
  • the above high-efficiency polycarboxylic acid water reducer, redispersible latex powder, retarder, water retention agent, defoamer, and inorganic pigment are all powders.
  • the setting time, flexural strength, compressive strength, and tensile bonding strength of the gypsum-based mortar are tested in accordance with GB/T 28627-2012, and the formaldehyde purification performance and formaldehyde purification durability are in accordance with JC/ T 1047-2008 was carried out, the release of negative ions was carried out in accordance with JC/T 2110-2012, and the efflorescence was carried out in accordance with JC/T 1024-2007.
  • a gypsum-based mortar composed of the following components by weight:
  • Non-calcined diatomaceous earth 32 parts;
  • Anion powder 4.5 parts
  • Nano titanium dioxide 1.5 parts
  • High-efficiency polycarboxylic acid water reducing agent 0.12 parts
  • Redispersible latex powder 0.1 part
  • Gypsum retarder 0.035 parts
  • Polyether defoamer 0.15 parts
  • Inorganic pigments 0.5 parts.
  • It can be prepared by mixing the above raw materials evenly in proportion.
  • a gypsum-based mortar composed of the following components by weight:
  • Non-calcined diatomaceous earth 30 parts;
  • Anion powder 4.0 parts
  • Nano titanium dioxide 1.2 parts
  • High-efficiency polycarboxylic acid water reducing agent 0.11 part;
  • Redispersible latex powder 0.12 parts
  • Gypsum retarder 0.037 parts
  • Polyether defoamer 0.15 parts
  • Inorganic pigments 0.5 parts.
  • It can be prepared by mixing the above raw materials evenly in proportion.
  • Non-calcined diatomaceous earth 6 parts;
  • Nano titanium dioxide 0.5 parts
  • High-efficiency polycarboxylic acid water reducing agent 0.12 parts
  • Redispersible latex powder 0.1 part
  • Gypsum retarder 0.035 parts
  • Polyether defoamer 0.15 parts
  • Inorganic pigments 0.5 parts.
  • It can be prepared by mixing the above raw materials evenly in proportion.
  • Table 3 shows the properties of gypsum-based mortar after adding 45% water by weight.
  • a gypsum-based mortar without anion powder which is composed of the following components by weight:
  • Non-calcined diatomaceous earth 32 parts;
  • Nano titanium dioxide 1.5 parts
  • High-efficiency polycarboxylic acid water reducing agent 0.12 parts
  • Redispersible latex powder 0.1 part
  • Gypsum retarder 0.035 parts
  • Polyether defoamer 0.15 parts
  • Inorganic pigments 0.5 parts.
  • It can be prepared by mixing the above raw materials evenly in proportion.
  • a gypsum-based mortar without nano-titanium dioxide which is composed of the following components by weight:
  • Non-calcined diatomaceous earth 32 parts;
  • Anion powder 4.0 parts
  • High-efficiency polycarboxylic acid water reducing agent 0.12 parts
  • Redispersible latex powder 0.1 part
  • Gypsum retarder 0.035 parts
  • Polyether defoamer 0.15 parts
  • Inorganic pigments 0.5 parts.
  • It can be prepared by mixing the above raw materials evenly in proportion.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

一种多功能石膏基砂浆及其制备方法，包括以下重量份的组分：石膏30-40份、硅藻土30-40份、纳米二氧化钛0.5-3.0份、细集料30-40份。石膏基砂浆既能够基于石膏基胶凝材料水化结构及硅藻土结构提高石膏基砂浆对甲醛的吸附性能，还可以将多孔结构所吸附的甲醛分解，从而保持吸附的持久性和长效性。

Description

一种多功能石膏基砂浆及其制备方法 技术领域
本发明涉及一种石膏基砂浆，具体涉及一种具有吸附甲醛净化空气等功能的石膏基砂浆。本发明还提供该石膏基砂浆的制备方法。
背景技术
目前，各种新型建筑装饰材料日益繁多，室内装修中，各种人造板材、胶黏剂、涂料等的使用日益广泛。随着室内装修程度的提高，室内环境污染逐渐加剧。同时人们对象征生活质量的居室环境日益重视，已越来越难以忍受室内气体污染物，尤其是甲醛。近年来，由甲醛引发的空气污染越来越受到人们的关注，居室与办公室中所用的装修涂料、油漆、人造装饰板中的粘合剂都可向空气中释放甲醛。当前新装修的房屋中甲醛浓度偏高，甚至会大大超过国家规定标准。长期接触甲醛会有头疼、软弱无力等症状，严重者会患有口腔癌、皮肤癌、肺癌、白血病等疾病、如何对甲醛进行净化，已经成为当今亟待解决的问题。
目前解决的方法主要有两种：一是不断地降低装修材料中甲醛的含量，但这是有限度的。二是开发应用可吸收甲醛的饰面材料，以达到净化室内空气的目的。
室内空气净化材料分为：①物理净化材料，包括活性炭、硅胶、沸石等；其中活性炭具有较好的吸附功能，应用最广，但吸附较慢，且对低浓度有害气体的吸附指数低。②化学净化材料，应用面大的是光触媒材料，以TiO 2作为代表，但需要紫外线的照射，受到限制；另一种是负离子材料，通过负离 子与有害气体发生氧化还原反应，从而消除有害物质。③生物净化材料，主要利用绿色植物和生物酶净化空气。市场上面的空气净化产品主要有：空气净化器、净化涂料、喷刷型液剂、固体吸附材料。作为建材产品，应用较多的是涂料类产品。但是涂料类有机材料产品的本身耐老化性能较差。目前较多的是硅藻土类装饰材料，多从韩国货日本进口的技术和材料。但其存在不少问题，一是仅有单一的吸附功能，无催化功能，存在吸附饱和与解吸的可能。二是产品碱性较大，影响使用者身心健康。三是产品耐水性较差，长期耐久性有待于改善。因此有必要发展多功能的无机固体净化材料。
发明内容
一方面，主要基于解决有效吸附甲醛、净化空气的问题，本发明提供一种石膏基砂浆，其主要包括以下重量份的组分：石膏30-40份、硅藻土30-40份、纳米二氧化钛0.5-3.0份、细集料30-40份。
石膏是砂浆形成力学性能的基础，其水化形成的水化结构具有较多的细微孔结构，具有一定的甲醛吸附功能。硅藻土由于其具有松散、质轻、多孔、孔道主要为介孔、空隙分布有规律等特点，其对于甲醛的吸附效果优异。本发明意外地发现，将特定比例的石膏与硅藻土配合后，石膏基胶凝材料水化结构及硅藻土结构使得石膏基砂浆对甲醛的吸附性能达到75％以上，显著地提升了对于甲醛的吸附能力。在此基础上，本发明进一步加入了适当比例的纳米二氧化钛，可以将以上多孔结构所吸附的甲醛分解，从而保持吸附的持久性和长效性。
进一步地，上述石膏基砂浆，其主要包括以下重量份的组分：石膏30-35份、硅藻土30-35份、纳米二氧化钛1.0-2.0份、细集料30-40份；优选为石膏31.015份、硅藻土32份、纳米二氧化钛1.5份、细集料30份。
为进一步分解有害物质和调节室内湿度，让人处于舒适的环境，上述石膏基砂浆中还包括负离子粉，其用量为2-8份，优选为3-7份，更优选为4.5份。
意外地发现，在本发明石膏基砂浆中同时含有石膏、硅藻土、纳米二氧化钛和负离子粉时，其甲醛净化率和持久率得到明显提高，同时室内湿度有利于提高石膏基砂浆的耐久性。
另一方面，为进一步适应不同颜色装饰环境的需要，本发明石膏基砂浆中还可含有无机颜料，其用量可根据需要调整。例如通常，本发明石膏基砂浆中含有无机颜料0.1-1.0份；在一些实施例中分别是0.1份、0.5份、1.0份。
本发明石膏基砂浆中还含有减水剂、分散剂、石膏缓凝剂、保水剂、消泡剂等中的一种或几种，其用量或具体种类可根据需要进行选择。
在本发明一些具体实施方式中，所述石膏基砂浆，包括以下重量份的组分：石膏30-40份、硅藻土30-40份、细集料30-40份、负离子粉2-8份、纳米二氧化钛0.5-3.0份、聚羧酸减水剂0.10-0.15份、可再分散乳胶粉0.05-0.15份、石膏缓凝剂0.025-0.045份、保水剂0.05-0.10份、消泡剂0.10-0.20份、无机颜料0.1-1.0份。该优选配方的石膏基砂浆，具有吸附甲醛净化空气、释放负氧离子调节湿度、呈现不同颜色装饰环境的功能。
所述石膏基砂浆，优选包括以下重量份的组分：石膏30-35份、硅藻土30-35份、细集料30-35份、负离子粉3-7份、纳米二氧化钛1.0-2.0份、聚羧酸减水剂0.10-0.15份、可再分散乳胶粉0.08-0.12份、石膏缓凝剂0.025-0.040份、保水剂0.05-0.10份；消泡剂0.10-0.20份、无机颜料0.1-1.0份。
所述石膏基砂浆，更进一步优选包括以下重量份的组分：石膏31.015份、硅藻土32份、细集料30份、负离子粉4.5份、纳米二氧化钛1.5份、聚羧酸减水剂0.12份、可再分散乳胶粉0.1份、石膏缓凝剂0.035份、保水剂0.08份、消泡剂0.15份、无机颜料0.5份。
本发明上述石膏基砂浆，更进一步优选其总重量为100份。
优选地，所述石膏为α或β半水石膏；优选脱硫半水石膏。
优选地，所述硅藻土为非煅烧或煅烧硅藻土，其SiO 2质量百分含量≥70％；优选非煅烧硅藻土。更优选，所述硅藻土中SiO 2质量百分含量为75％-85％。
优选地，所述纳米二氧化钛，其直径≤100纳米，更优选其直径为10纳米-30纳米。
优选地，所述细集料为天然河、机制砂或尾矿砂；优选天然河砂。
在本发明一具体实施方式中，采用天然砂，其为40-70目和70-140目(大于70目)的两种天然砂按照2:1的比例组合而成。其优点在于集料趋于紧密堆积提高石膏砂浆各项性能，同时可增加石膏和硅藻土用量提高石膏砂浆甲醛净化率。
优选地，所述负离子粉，其稀土含量≥60％，电气石粉含量≥20％。
更优选地，所述负离子粉，其稀土含量为70％-80％，电气石粉含量为20％-30％。
优选地，所述减水剂为聚羧酸减水剂。
优选地，所述聚羧酸减水剂包括醚类聚羧酸减水剂、酯类聚羧酸减水剂中的一种或几种。
优选地，所述分散剂为可再分散性乳胶粉。
优选地，所述可再分散性乳胶粉包括醋酸乙烯酯与乙烯的共聚胶粉、乙烯与氯乙烯及月桂酸乙烯酯三元共聚胶粉、醋酸乙烯酯与乙烯及高级脂肪酸乙烯酯三元共聚胶粉中的一种或几种。
优选地，所述石膏缓凝剂包括酒石酸、柠檬酸、葡萄糖酸钠、骨胶蛋白质石膏缓凝剂中的一种或几种。
优选地，所述保水剂包括甲基纤维素、羧甲基纤维素、羟乙基纤维素、羟丙基甲基纤维素中的一种或几种。
优选地，消泡剂包括聚醚类消泡剂、高碳醇脂肪酸酯复合物、聚醚改性硅中的一种或几种。
优选地，所述的无机颜料包括金属氧化物、铬酸盐、碳酸盐、硫酸盐和硫化物中的一种或几种。
本发明所述石膏、硅藻土、细集料、纳米二氧化钛，负离子粉、可再分散性乳胶粉、缓凝剂、保水剂、消泡剂、无机颜料均可通过市售获得。
本发明所述石膏基砂浆的制备方法，包括将各组分充分搅拌混合均匀即 可。
本发明所述石膏基砂浆使用时加入一定比例水，搅拌均匀即可使用；优选加水量为其重量的60％-80％。
本发明还包括上述石膏基砂浆在非潮湿环境的内墙面装饰上的应用。
实验证明，上述石膏基砂浆使用过程中加水量控制在石膏基砂浆重量的60％-80％，可以保证石膏基砂浆的各项性能。石膏基砂浆的性能如下表所示。
石膏基砂浆物理力学性能
Figure PCTCN2019129855-appb-000001
本发明是基于以下原理：
本发明石膏基砂浆首先选用石膏作为无机胶凝材料，是砂浆形成力学性能的基础，同时石膏水化形成的水化结构也有较多的细微孔结构；硅藻土是一种生物成因的硅质沉积岩，由于其具有松散、质轻、多孔、孔道主要为介孔、空隙分布有规律等特点，其对于甲醛的吸附效果优异；但是硅藻土的多空结构仅仅具有吸附功能，因此需要掺加纳米二氧化钛催化剂，将硅藻土等多孔结构的吸附甲醛分解，从而保持吸附的持久性；负离子粉释放负离子，负离子是带一个或多个负电荷的离子，负离子能够还原来自大气的污染物质、氮氧化物、香烟等产生的活性氧、减少过多活性氧对人体的危害，中和带正点的空气飘尘，使其无电荷后沉降，净化空气，无机颜料耐久性好，同时不 同无机颜料的组合可以满足不同颜色装饰的要求。基于各类原材料的功能特性进行合理组合，从而制备出具有吸附甲醛净化空气、释放负氧离子调节湿度、呈现不同颜色装饰环境的石膏基砂浆。
本发明的有益效果：
1)采用石膏基水化结构及硅藻土结构使得石膏基砂浆对甲醛的吸附性能达到75％以上。
2)采用纳米二氧化钛催化剂使得石膏基砂浆甲醛净化持久性达到70％以上。
3)采用负离子粉使得石膏基砂浆释放的负离子达到10000icon/cm 3以上。
4)采用无机颜料使得石膏基砂浆具有装饰效果。
随着生活质量的居室环境日益重视，兼具多功能的建筑材料是发展趋势，本发明利用各种原材料的功能特点可以制备净化调湿装饰等多功能的石膏基砂浆，以满足各类性能需求。
具体实施方式
以下实施例用于说明本发明，但不用来限制本发明的范围。实施例中未注明具体技术或条件者，按照本领域内的文献所描述的技术或条件，或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者，均为可通过正规渠道商购买得到的常规产品。
脱硫半水石膏购自山东平邑金盾石膏制品有限公司；该高强石膏：初凝时间＞6min，终凝时间＜30min，2h抗折强度≥5MPa，2h抗压强度≥10MPa。
非煅烧硅藻土购自吉林远通硅藻土公司，硅藻土的孔结构呈狭缝状，比表面积为4100m 2/g，平均孔径为9.64nm。
细集料购自河北围场的天然砂，其为40-70目和70-140目(大于70目)的两种天然砂按照2:1的比例组合而成。
负离子粉购自石家庄驰霖矿产品有限公司，粒径为1500目，呈灰白色。
纳米二氧化钛催化剂购自晶瑞新材料有限公司，为锐钛型二氧化钛，其硬度为5.5～6.0。
高效聚羧酸减水剂购自苏州市兴邦化学建材有限公司；可再分散性乳胶粉购自济南悦凯化工有限公司；石膏缓凝剂购自南京斯泰宝贸易有限公司；保水剂购自山东苏诺克化工有限公司；聚醚类消泡剂购自北京金源东和化学有限公司；无机颜料购自天津市盛光明颜料有限公司。
以上高效聚羧酸减水剂、可再分散性乳胶粉、缓凝剂、保水剂、消泡剂、无机颜料均为粉体。
以下实施例及对比例石膏基砂浆的性能检测方法中凝结时间、抗折强度、抗压强度、拉伸粘结强度按照GB/T 28627-2012进行，甲醛净化性能和甲醛净化持久性按照JC/T 1047-2008进行，负离子释放量按照JC/T 2110-2012进行，泛碱性按照JC/T 1024-2007进行。
实施例1
一种石膏基砂浆，由以下重量份的组分组成：
脱硫半水石膏：31.015份；
非煅烧硅藻土：32份；
天然砂：30份；
负离子粉：4.5份；
纳米二氧化钛：1.5份；
高效聚羧酸减水剂：0.12份；
可再分散性乳胶粉：0.1份；
石膏缓凝剂：0.035份；
低粘度纤维素醚：0.08份；
聚醚类消泡剂：0.15份；
无机颜料：0.5份。
将以上各原料按比例混合均匀即可制得。
石膏基砂浆中加入其重量70％水后其各项性能如表1所示。
表1石膏基砂浆物理力学性能
Figure PCTCN2019129855-appb-000002
Figure PCTCN2019129855-appb-000003
实施例2
一种石膏基砂浆，由以下重量份的组分组成：
脱硫半水石膏：33.823份；
非煅烧硅藻土：30份；
天然砂：30份；
负离子粉：4.0份；
纳米二氧化钛：1.2份；
高效聚羧酸减水剂：0.11份；
可再分散性乳胶粉：0.12份；
石膏缓凝剂：0.037份；
低粘度纤维素醚：0.09份；
聚醚类消泡剂：0.15份；
无机颜料：0.5份。
将以上各原料按比例混合均匀即可制得。
石膏基砂浆中加入其重量67％水后其各项性能如表2所示。
表2石膏基砂浆物理力学性能
Figure PCTCN2019129855-appb-000004
Figure PCTCN2019129855-appb-000005
对比例1
一种石膏基砂浆，掺加少量硅藻土，且未掺加负离子粉，其由以下重量份的组分组成：
脱硫半水石膏：37.515份；
非煅烧硅藻土：6份；
天然砂：55份；
纳米二氧化钛：0.5份；
高效聚羧酸减水剂：0.12份；
可再分散性乳胶粉：0.1份；
石膏缓凝剂：0.035份；
低粘度纤维素醚：0.08份；
聚醚类消泡剂：0.15份；
无机颜料：0.5份。
将以上各原料按比例混合均匀即可制得。
石膏基砂浆中加入其重量45％水后其各项性能如表3所示。
表3石膏基砂浆物理力学性能
Figure PCTCN2019129855-appb-000006
Figure PCTCN2019129855-appb-000007
对比例2
一种石膏基砂浆，未掺加负离子粉，其由以下重量份的组分组成：
脱硫半水石膏：33.515份；
非煅烧硅藻土：32份；
天然砂：32份；
纳米二氧化钛：1.5份；
高效聚羧酸减水剂：0.12份；
可再分散性乳胶粉：0.1份；
石膏缓凝剂：0.035份；
低粘度纤维素醚：0.08份；
聚醚类消泡剂：0.15份；
无机颜料：0.5份。
将以上各原料按比例混合均匀即可制得。
石膏基砂浆中加入其重量74％水后其各项性能如表4所示。
表4石膏基砂浆物理力学性能
Figure PCTCN2019129855-appb-000008
Figure PCTCN2019129855-appb-000009
对比例3
一种石膏基砂浆，未掺加纳米二氧化钛，其由以下重量份的组分组成：
脱硫半水石膏：31.515份；
非煅烧硅藻土：32份；
天然砂：31份；
负离子粉：4.0份；
高效聚羧酸减水剂：0.12份；
可再分散性乳胶粉：0.1份；
石膏缓凝剂：0.035份；
低粘度纤维素醚：0.08份；
聚醚类消泡剂：0.15份；
无机颜料：0.5份。
将以上各原料按比例混合均匀即可制得。
石膏基砂浆中加入其重量74％水后其各项性能如表5所示。
表5石膏基砂浆物理力学性能
Figure PCTCN2019129855-appb-000010
虽然，上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述，但在本发明基础上，可以对之作一些修改或改进，这对本领域技术人员 而言是显而易见的。因此，在不偏离本发明精神的基础上所做的这些修改或改进，均属于本发明要求保护的范围。

Claims (10)

  1. 一种石膏基砂浆，其特征在于，包括以下重量份的组分：石膏30-40份、硅藻土30-40份、纳米二氧化钛0.5-3.0份、细集料30-40份。
  2. 根据权利要求1所述的石膏基砂浆，其特征在于，包括以下重量份的组分：石膏30-35份、硅藻土30-35份、纳米二氧化钛1.0-2.0份、细集料30-40份；优选为石膏31.015份、硅藻土32份、纳米二氧化钛1.5份、细集料30份。
  3. 根据权利要求1或2所述的石膏基砂浆，其特征在于，还包括负离子粉2-8份，优选为3-7份，更优选为4.5份。
  4. 根据权利要求1-3任一项所述的石膏基砂浆，其特征在于，还含有减水剂、分散剂、石膏缓凝剂、保水剂、消泡剂中的一种或几种。
  5. 根据权利要求1所述的石膏基砂浆，其特征在于，包括以下重量份的组分：石膏30-40份、硅藻土30-40份、细集料30-40份、负离子粉2-8份、纳米二氧化钛0.5-3.0份、聚羧酸减水剂0.10-0.15份、可再分散乳胶粉0.05-0.15份、石膏缓凝剂0.025-0.045份、保水剂0.05-0.10份、消泡剂0.10-0.20份、无机颜料0.1-1.0份；
    优选包括以下重量份的组分：石膏30-35份、硅藻土30-35份、细集料30-35份、负离子粉3-7份、纳米二氧化钛1.0-2.0份、聚羧酸减水剂0.10-0.15份、可再分散乳胶粉0.08-0.12份、石膏缓凝剂0.025-0.040份、保水剂0.05-0.10份；消泡剂0.10-0.20份、无机颜料0.1-1.0份；
    更优选包括以下重量份的组分：石膏31.015份、硅藻土32份、细集料30份、负离子粉4.5份、纳米二氧化钛1.5份、聚羧酸减水剂0.12份、可再分散乳胶粉0.1份、石膏缓凝剂0.035份、保水剂0.08份、消泡剂0.15份、无机颜料0.5份。
  6. 根据权利要求1-5任一项所述的石膏基砂浆，其总重量为100份。
  7. 根据权利要求1-6任一项所述的石膏基砂浆，其特征在于，所述石膏为α或β半水石膏；优选脱硫半水石膏；和/或，
    所述硅藻土为非煅烧或煅烧硅藻土，其SiO 2质量百分含量≥70％；优选非煅烧硅藻土；和/或，
    所述的纳米二氧化钛，其直径≤100纳米；和/或，
    所述负离子粉，其稀土含量≥60％，电气石粉含量≥20％。
  8. 根据权利要求1-7任一项所述的石膏基砂浆，其特征在于，所述细集料为天然河、机制砂或尾矿砂；优选天然河砂；和/或，
    所述聚羧酸减水剂包括醚类聚羧酸减水剂、酯类聚羧酸减水剂中的一种或几种；和/或，
    所述可再分散性乳胶粉包括醋酸乙烯酯与乙烯的共聚胶粉、乙烯与氯乙烯及月桂酸乙烯酯三元共聚胶粉、醋酸乙烯酯与乙烯及高级脂肪酸乙烯酯三元共聚胶粉中的一种或几种；和/或，
    所述石膏缓凝剂包括酒石酸、柠檬酸、葡萄糖酸钠、骨胶蛋白质石膏缓凝剂中的一种或几种；和/或，
    所述保水剂包括甲基纤维素、羧甲基纤维素、羟乙基纤维素、羟丙基甲基纤维素中的一种或几种；和/或，
    所述消泡剂包括聚醚类消泡剂、高碳醇脂肪酸酯复合物、聚醚改性硅中的一种或几种；和/或，
    所述的无机颜料包括金属氧化物、铬酸盐、碳酸盐、硫酸盐和硫化物中的一种或几种。
  9. 权利要求1-8任一项所述石膏基砂浆的制备方法，其特征在于，包括将各组分充分搅拌混合均匀，制备得到干粉石膏基砂浆；或者进一步地，在使用时加入60％-80％石膏基砂浆重量的水，搅拌均匀，即可。
  10. 权利要求1-8任一项所述石膏基砂浆在非潮湿环境的内墙面装饰上的应用。
PCT/CN2019/129855 2019-08-20 2019-12-30 一种多功能石膏基砂浆及其制备方法 WO2021031502A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/812,276 US11091395B2 (en) 2019-08-20 2020-03-07 Multifunctional gypsum-based mortar and method of making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910770078.4A CN110423083A (zh) 2019-08-20 2019-08-20 一种多功能石膏基砂浆及其制备方法
CN201910770078.4 2019-08-20

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/812,276 Continuation US11091395B2 (en) 2019-08-20 2020-03-07 Multifunctional gypsum-based mortar and method of making same

Publications (1)

Publication Number Publication Date
WO2021031502A1 true WO2021031502A1 (zh) 2021-02-25

Family

ID=68415344

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/129855 WO2021031502A1 (zh) 2019-08-20 2019-12-30 一种多功能石膏基砂浆及其制备方法

Country Status (2)

Country Link
CN (1) CN110423083A (zh)
WO (1) WO2021031502A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110423083A (zh) * 2019-08-20 2019-11-08 北京建筑材料科学研究总院有限公司 一种多功能石膏基砂浆及其制备方法
CN110790558A (zh) * 2019-11-15 2020-02-14 贵州福泉蓝图住宅产业化有限公司 一种防潮型可释放负氧离子轻质抹灰石膏及其制备方法
CN112500103A (zh) * 2020-11-27 2021-03-16 贵州西奥建筑节能科技有限公司 一种吸附甲醛的石膏自流平砂浆
CN112500105A (zh) * 2020-11-27 2021-03-16 贵州西奥建筑节能科技有限公司 一种吸附甲醛的石膏抹灰砂浆
CN113135728A (zh) * 2021-04-25 2021-07-20 武汉帅麟科技有限公司 一种石膏基装饰砂浆及其制备方法
CN114988836B (zh) * 2022-06-20 2023-05-16 贵州开磷磷石膏综合利用有限公司 一种高强石膏砂浆及其制备方法与应用
CN116444241A (zh) * 2023-03-24 2023-07-18 北京建筑材料科学研究总院有限公司 一种可释放负离子的除醛砂浆及其制备方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110030718A (ko) * 2009-09-18 2011-03-24 김송이 에코시멘트월
CN102838337A (zh) * 2012-09-04 2012-12-26 同济大学 一种脱硫石膏基功能型抹面砂浆及其制备方法
CN104072075A (zh) * 2014-06-26 2014-10-01 青岛博洋生物技术有限公司 一种绿色环保建筑材料
CN104895206A (zh) * 2015-06-10 2015-09-09 青岛科瑞新型环保材料有限公司 一种复合真空隔热保温板及其长效呼吸泥
CN105669152A (zh) * 2016-01-11 2016-06-15 白山市和一硅藻科技有限公司 室内墙基底层用具有净化功能性找平泥及制备、施工方法
CN106242460A (zh) * 2015-06-10 2016-12-21 青岛科瑞新型环保材料集团有限公司 一种室内装饰泥
CN110423083A (zh) * 2019-08-20 2019-11-08 北京建筑材料科学研究总院有限公司 一种多功能石膏基砂浆及其制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101611441B1 (ko) * 2015-09-03 2016-04-11 주식회사 이엠코리아 천연광석 분말을 포함하는 친환경 미장용 첨가제와 그것을 이용한 미장용 시멘트 및 몰탈
CN106977168A (zh) * 2017-06-06 2017-07-25 合肥月煌新型装饰材料有限公司 一种室内粉刷石膏及其制备方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110030718A (ko) * 2009-09-18 2011-03-24 김송이 에코시멘트월
CN102838337A (zh) * 2012-09-04 2012-12-26 同济大学 一种脱硫石膏基功能型抹面砂浆及其制备方法
CN104072075A (zh) * 2014-06-26 2014-10-01 青岛博洋生物技术有限公司 一种绿色环保建筑材料
CN104895206A (zh) * 2015-06-10 2015-09-09 青岛科瑞新型环保材料有限公司 一种复合真空隔热保温板及其长效呼吸泥
CN106242460A (zh) * 2015-06-10 2016-12-21 青岛科瑞新型环保材料集团有限公司 一种室内装饰泥
CN105669152A (zh) * 2016-01-11 2016-06-15 白山市和一硅藻科技有限公司 室内墙基底层用具有净化功能性找平泥及制备、施工方法
CN110423083A (zh) * 2019-08-20 2019-11-08 北京建筑材料科学研究总院有限公司 一种多功能石膏基砂浆及其制备方法

Also Published As

Publication number Publication date
CN110423083A (zh) 2019-11-08

Similar Documents

Publication Publication Date Title
WO2021031502A1 (zh) 一种多功能石膏基砂浆及其制备方法
US11091395B2 (en) Multifunctional gypsum-based mortar and method of making same
CN103924756B (zh) 一种具有净化室内空气功能的天花板及其制备方法
CN102942341B (zh) 弱碱性硅藻泥壁材及其制备方法
CN104895206A (zh) 一种复合真空隔热保温板及其长效呼吸泥
CN109776055B (zh) 一种多功能环保沸石硅藻泥内墙涂料
CN104912212A (zh) 一种复合真空隔热保温板及其长效呼吸泥
CN105669152A (zh) 室内墙基底层用具有净化功能性找平泥及制备、施工方法
CN104529263A (zh) 一种玉石泥涂料及其制备和使用方法
CN107935618B (zh) 一种生态装饰硅藻泥-人造砂岩复合板及制备方法
CN113045914B (zh) 空气净化涂料及其制备方法和用途
CN111116147A (zh) 一种高效空气净化的硅藻泥及其制备方法
CN107459292A (zh) 一种沸石硅藻泥涂料
JP2008038365A (ja) 建築物内装壁及びその仕上げ塗り材
CN107352855A (zh) 一种诱生负离子的硅藻泥壁材及其施工方法
CN111574130A (zh) 一种长絮凝时间的仿清水混凝土及其制备方法
KR101611430B1 (ko) 건축물의 친환경 마감재 첨가제, 이를 포함하는 마감재 조성물 및 건축물의 친환경 마감재
CN111548666A (zh) 净化空气防水抑菌的弱碱性负氧离子腻子粉及制备方法
JP2001354875A (ja) 建築仕上用塗材及び建築仕上用パネルと、これらの製造方法
WO2020199400A1 (zh) 一种具有净化功能的机喷面层抹灰石膏及其制备方法
KR20170028234A (ko) 건축물의 친환경 마감재 첨가제, 이를 포함하는 마감재 조성물 및 건축물의 친환경 마감재
CN109401415A (zh) 一种净化甲醛内墙耐水腻子
CN101638530B (zh) 一种可净化空气的脱硫石膏刮墙腻子
CN107555893A (zh) 一种建筑墙体用的负离子砂浆及其制备方法
RU2348588C2 (ru) Сухая строительная смесь

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19942287

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19942287

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 16/11/2022)

122 Ep: pct application non-entry in european phase

Ref document number: 19942287

Country of ref document: EP

Kind code of ref document: A1