CN112239338A - Light weight adhesive composition - Google Patents

Light weight adhesive composition Download PDF

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Publication number
CN112239338A
CN112239338A CN201910641414.5A CN201910641414A CN112239338A CN 112239338 A CN112239338 A CN 112239338A CN 201910641414 A CN201910641414 A CN 201910641414A CN 112239338 A CN112239338 A CN 112239338A
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China
Prior art keywords
adhesive
composition
expanded perlite
cement
mass
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CN201910641414.5A
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Chinese (zh)
Inventor
大卫·巴尔莫夫
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Shahar Building Materials Co ltd
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Shahar Building Materials Co ltd
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Priority to CN201910641414.5A priority Critical patent/CN112239338A/en
Publication of CN112239338A publication Critical patent/CN112239338A/en
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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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
    • 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
    • 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
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • 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

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  • 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)
  • Adhesives Or Adhesive Processes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to a powdery light adhesive composition comprising: (a) cement; (b) a dispersible polymer powder; (c) defoaming agents; and (d) expanded perlite in an amount of at least 10% by volume of the powdered adhesive; wherein the proportion of cement is 40% to 1505% of the mass of the expanded perlite; and wherein the powdered adhesive composition is an adhesive and the adhesive strength of the adhesive exceeds 0.3MPa after 28 days.

Description

Light weight adhesive composition
Technical Field
The present invention relates to the use of a lightweight composition containing expanded perlite. More particularly, the invention relates to the use of compositions of expanded perlite in the construction industry.
Background
When molten rock (i.e., lava) is poured out of the volcano and cools rapidly, volcanic glass, such as perlite, is formed. This rapid cooling inhibits crystal formation and allows water to escape. Perlite is a lava rock that hardens immediately and contains 2% to 5% water.
Perlite is known in the industry in two forms: raw perlite and expanded perlite. Raw perlite ore is prepared by crushing and screening perlite into various sized fractions. The expanded perlite is perlite after the perlite has been heated. When heated, perlite can expand to almost twenty times its original volume. This expansion is the result of the heated water: when the glassy lava is heated to, for example, 890 ℃, water molecules trapped in the rock can become vapors, which causes the rock to expand. This is similar to the water in the corn kernels expanding upon heating to produce popcorn. The presence of these trapped water molecules in the perlite can explain the physical properties of the expanded perlite.
The expanded perlite can be manufactured to 32kg/m3～240kg/m3Which makes it suitable for many applications in the building, industrial, chemical, horticultural and petrochemical industries.
US 7,736,574 discloses a method of producing a perlite product such as a sheet, board or brick. The disclosed method includes first providing a quantity of expanded perlite and treating the perlite by applying a cementitious binder thereto to at least partially encapsulate the perlite with binder. Thereafter, some cement was added to the binder treated perlite and a mixture was created. The mixture is then formed and allowed to harden to give a solid article. However, the disclosed method is used to produce perlite based solid articles.
GB 1225755 discloses a cement-based adhesive composition for fixing ceramic tiles (tiles) and brocade tiles mixed with water, said composition comprising 20 to 90% by weight of cement, 1 to 50% by weight of lightweight aggregate, 1 to 50% by weight of filler, up to 10% by weight of synthetic resin and up to 5% by weight of alkyl cellulose, hydroxyalkyl cellulose or alkyl hydroxyalkyl cellulose.
EP 0839774 a1 discloses a lightweight brick masonry mortar of at least LM 21 grade, in particular in the form of an engineering fresh mortar product or an engineering dry mortar product, which can be pumped after the addition of water, which contains 30 to 75% by weight of a hydraulic binder in the form of cement, 5 to 15% by weight of a hydraulic or latent hydraulic binder component, 5 to 60% by weight of lightweight aggregates in the form of round expanded clay particles, 4 to 20% by weight of lightweight aggregates in the form of foamed glass particles, 0.01 to 0.5% by weight of cellulose ether and 0.001 to 1.0% by weight of a pore former.
EP 2910535 discloses a method for producing a powdered adhesive, comprising the steps of: mixing expanded perlite, cement and dispersible polymer powder in any order; wherein at least 30% by volume of the sand-free powdered binder is expanded perlite.
Disclosure of Invention
It is an object of the present invention to provide a lightweight composition for use in the construction industry.
Another object of the invention is to provide a light-weight adhesive for attaching any natural or synthetic stone veneer.
It is a further object of the present invention to provide an ecological adhesive for gluing stone tiles which has a long open time.
It is a further object of the present invention to provide an adhesive or plaster having improved thermal and acoustical insulation properties.
Other objects and advantages of the present invention will become apparent from the following description.
The present invention relates to a powdered adhesive composition comprising: (a) cement; (b) a dispersible polymer powder; (c) defoaming agents; and (d) expanded perlite in an amount of at least 10% by volume of the powdered adhesive; wherein the proportion of cement is 40% to 1505% of the mass of the expanded perlite; and wherein the powdered adhesive composition is an adhesive and the adhesive strength of the adhesive exceeds 0.3MPa after 28 days.
Preferably, the composition further comprises a cellulose ether compound.
Preferably, the composition further comprises a fibrous compound.
Preferably, the cement is white cement.
In one embodiment, the cement is Portland cement (Portland cement).
In one embodiment, the composition further comprises an accelerator.
Preferably, the expanded perlite comprises at least 1% of the total mass of the composition.
Preferably, the dispersible polymer powder is a vinyl acetate-based dispersible powder.
Preferably, the fiber compound is a polypropylene compound.
Preferably, the adhesive composition is used for gluing tiles (tile).
Preferably, the adhesive composition is used for gluing stone tiles.
Preferably, the adhesive strength of the adhesive is between 0.5MPa and 2.5MPa after 28 days and after at least 20 days of immersion in water.
The invention also relates to a production method of the powdery adhesive, which comprises the following steps: mixing expanded perlite, cement and dispersible polymer powder in any order; wherein at least 30% by volume of the sand-free powdered binder is the expanded perlite.
The invention also relates to a powdered adhesive composition comprising: gypsum; a retarder; a dispersible vinyl acetate-based polymer powder; and wherein at least 30% by volume of the powdered adhesive is expanded perlite.
Preferably, the set retarder is a modified polymer set retarder.
Preferably, the dry-blended density of the powdered adhesive composition is 250kg/m3～1500kg/m3。
Detailed Description
Existing stone veneer powder adhesives such as Sika Ceram-202 manufactured by Sika AG of switzerland or mr. fix 116 for glued tiles manufactured by Carmit mr. fix Ltd. of uk typically have a mass of more than 1400kg/m3The density of (c). These prior art adhesives are heavy, particularly due to the weight of the sand in the adhesive. The heavy weight of these prior adhesives results in high costs in shipping and problems in handling (e.g., manual handling). Furthermore, if the sand is not properly dried prior to mixing into the adhesive, some of the polymer of the adhesive may be broken, thereby significantly weakening the adhesive.
The term "adhesive" is meant hereinafter to include any composition for gluing, for example, ceramics, marble, concrete, granite porcelain or bricks, onto the surface of a concrete wall or floor or a panel made of cement, wood, mortar or gypsum, which has a cohesive strength greater than 0.3 megapascals (MPa) after 28 days.
Adhesive composition
An adhesive composition for the construction industry is presented which uses expanded perlite. Unlike conventional binder compositions having sand as the aggregate, in this embodiment, a portion or all of the volume of sand is replaced by an equal or equivalent volume of expanded perlite. In some cases, the adhesive is sand-free. The composition comprising expanded perlite can be used to produce adhesives, plasters or any kind of material which hardens when dry and which can be used for indoor and/or outdoor gluing and/or coating on walls, ceilings, floors or for any other construction purpose. For example, the composition may be used as a powdered adhesive, and the resulting material when mixed with water may be used to glue natural or synthetic stone, ceramics, marble, concrete, granite porcelain or brick to the surface of a wall or floor or panel made of cement, wood, mortar or gypsum. Thus, for example, a powdered adhesive composition for stone veneers using expanded perlite instead of sand may have about 500kg/m3And may have a density of greater than 1400kg/m3This makes the same volume lighter in weight than typical prior art powdered adhesives of similar density. In some embodiments, the proposed powdered adhesive composition may have 200kg/m3～1500kg/m3The density of (c). In one embodiment, the dry mix density of the powdered adhesive composition may be 250kg/m3～1500kg/m3. The advantage of using expanded perlite in place of sand in the powdered binder or stucco in improving the thermal and/or acoustical insulation properties of the binder and/or stucco is attributed to the improved thermal and/or acoustical insulation properties of the expanded perlite, as further discussed in table 1. The adhesive composition comprising expanded perlite may have various consistencies such as powders, granules, creams, etc. The adhesive or stucco composition containing the expanded perlite can be stored in sacks, bags, drums or sacksAny other known container. In particular, the expanded perlite comprises:
at least 10% of the total volume of the adhesive/stucco composition;
at least 30% of the total volume of the adhesive/stucco composition;
at least 70% of the total volume of the adhesive/stucco composition;
at least 80% of the total volume of the adhesive/stucco composition; or
At least 90% of the total volume of the adhesive/stucco composition.
Examples of the above total volumes of the adhesive/stucco composition are described in more detail below.
Adhesive/stucco compositions with vermiculite
Alternatively, expanded vermiculite may be used in place of expanded perlite as described in the preceding paragraph with respect to the adhesive/stucco composition. Vermiculite is a hydrated silicate mineral which (a) is classified as a phyllosilicate and (b) expands substantially on heating. Vermiculite may be formed by weathering or hydrothermal alteration of biotite or phlogopite.
Powdered adhesive for light stone facing
The first powdery light stone facing adhesive has
(a) Expanded perlite comprising at least 70% by volume of the adhesive;
(b) a cellulose ether compound in a ratio of 7% to 15% of the mass of the expanded perlite;
(c) a dispersible polymer in a ratio of 17% to 180% of the mass of the expanded perlite;
(d) an antifoaming agent in a ratio of 0.5% to 20% by mass of the expanded perlite;
(e) a fiber compound in a ratio of 0.9% to 1.1% by mass of the expanded perlite;
(f) an accelerator in a ratio of 5% to 15% by mass of the expanded perlite; and
(g) optionally cement in a ratio of 600% to 900% by mass of the expanded perlite.
The ingredients of the quick-drying glue may be mixed together in any order to obtain the desired adhesive strength of the adhesive, which is more than 0.3MPa after 28 days and after at least 20 days of immersion in water. Preferably, the adhesive strength is between 0.5MPa and 2.5MPa after 28 days and after at least 20 days of immersion in water.
The second powdery light stone facing adhesive has
(a) Expanded perlite, which represents at least 1% of the mass of the adhesive;
(b) a cellulose ether compound in a ratio of 5% to 25% of the mass of the expanded perlite;
(c) a dispersible polymer in a ratio of 10% to 250% of the mass of the expanded perlite;
(d) an antifoaming agent in a ratio of 0.1% to 65% by mass of the expanded perlite;
(e) a fiber compound in a ratio of 0.6% to 15% by mass of the expanded perlite;
(f) an accelerator in a ratio of 3% to 25% by mass of the expanded perlite; and
(g) optionally cement in a ratio of 600% to 1000% of the mass of the expanded perlite.
The ingredients of the quick-drying glue may be mixed together in any order to obtain the desired adhesive strength of the adhesive, which is more than 0.4MPa after 28 days and after at least 20 days of immersion in water. Preferably, the adhesive strength is 0.5MPa to 2.5MPa after 28 days.
In some embodiments, the powdered lightweight stone veneer adhesive is a sand-free adhesive.
The third powdery light sand-free stone facing adhesive has
Expanded perlite comprising at least 10% by volume of the powdered adhesive;
a cellulose ether compound in a ratio of 5% to 25% of the mass of the expanded perlite;
a dispersible polymer in a ratio of 10% to 250% of the mass of the expanded perlite;
an antifoaming agent in a ratio of 0.1% to 65% by mass of the expanded perlite;
a fiber compound in a ratio of 0.6% to 15% by mass of the expanded perlite;
an accelerator in a ratio of 3% to 25% by mass of the expanded perlite; and
optionally cement in a ratio of 600% to 1000% of the mass of the expanded perlite.
The ingredients of the quick-drying glue may be mixed together in any order to obtain the desired adhesive strength of the adhesive, which is more than 0.4MPa after 28 days and after at least 20 days of immersion in water. Preferably, the adhesive strength is between 0.5MPa and 2.5MPa after 28 days and after at least 20 days of immersion in water.
The fourth powdery light sand-free stone facing adhesive has
Expanded perlite comprising at least 15% by volume of the powdered adhesive;
a dispersible polymer in a ratio of 10% to 305% by mass of the expanded perlite;
an antifoaming agent in a ratio of 0.1% to 65% by mass of the expanded perlite; and
optionally cement in a ratio of 40% to 1505% of the mass of the expanded perlite.
The ingredients of the quick-drying glue may be mixed together in any order to obtain the desired adhesive strength of the adhesive, which is more than 0.3MPa after 28 days and after at least 20 days of immersion in water. Preferably, the adhesive strength is between 0.5MPa and 2.5MPa after 28 days and after at least 20 days of immersion in water.
The glue can be mixed with water to produce a glue with a cream-like texture that hardens when dried. Due to the inherent properties of expanded perlite, water can be added to the powdered adhesive composition in the following mass ratios: for example about 0.8:1, which means that about 0.8 liter of water can be added for every 1kg of powder; 0.9: 1; 0.7: 1; 0.6: 1; or 1: 1. Water may also be added to the powdered adhesive composition at a ratio of 60% to 100% by mass of the powdered adhesive composition. The ratio of water added to the adhesive powder may also be a function of the specific composition of the adhesive powder. The adhesive can be used to glue any stone tile as a protective and/or decorative covering for external or internal horizontal or vertical surfaces, with or without the use of cement.
Compositions comprising expanded perlite are used to produce light weight powdered veneer adhesives. The term facing is intended to include any protective or decorative covering that may be adhesively attached to any horizontal or vertical surface. For example, the adhesive may be used to adhesively attach stone such as granite, porcelain, ceramic, mosaic, marble, brick, or any other synthetic or natural stone to a surface such as a wall, ceiling, floor. The powdered adhesive is mixed with water to produce a creamy texture glue that hardens when dried. The glue can be used for adhesively attaching any stone tile as a protective and/or decorative covering for external or internal horizontal or vertical surfaces. The powdered adhesive composition for attaching a stone veneer comprises
A first component:
at least 1% of its total mass of expanded perlite;
at least 3% expanded perlite by weight of its total mass;
at least 6% by weight of its total mass of expanded perlite; or
At least 9% expanded perlite by weight of its total mass.
Preferably, the expanded perlite used in the adhesive composition has the following characteristics:
(A) particle size of 0.01mm to 2mm and 50kg/m3～115kg/m3(ii) a density of (d);
(B) particle size of 2mm to 6mm and 40kg/m3～50kg/m3(ii) a density of (d);
(C)0.01mm to 6mParticle size of m and 40kg/m3～115kg/m3The density of (c).
For example, the physical properties of expanded perlite that can be used to produce a powdered adhesive composition for attaching stone tiles are disclosed in table 1:
TABLE 1
Figure BDA0002132004720000091
Indeed, the expanded perlite used in the adhesive composition may be derived from different sources and have other physical characteristics.
The use of expanded perlite instead of sand in building compositions can also be beneficial to the environment because perlite is a natural and ecological substance. The use of expanded perlite in place of sand in the powdered binder or stucco can also improve the thermal and/or acoustical insulation properties of the binder and/or stucco because the expanded perlite has improved thermal and/or acoustical insulation properties.
The second component is:
a cellulose ether compound, preferably Mecellose FMC21010 manufactured by samsung chemical company; methocel, which is a water-soluble methylcellulose and has a hydroxypropyl methylcellulose polymer; any other cellulose ether made for use with cement; and mixtures thereof. The cellulose ether compound enhances some of the qualities of the adhesive composition, such as imparting workability qualities to the composition and/or extending the open time of the composition, and/or improving the water saturation of the composition, wherein open time is the time after application of the adhesive until a usable bond can be obtained. Cellulose ether was added to the adhesive composition in the following ratio:
5-25% of the mass of the expanded perlite;
7-15% of the mass of the expanded perlite;
30-40% of the mass of the expanded perlite.
A third component
The dispersible polymer is preferably Vinnapas 5025L from Wacker, which is a leveling dispersible powder based on vinyl acetate and ethylene; or may be any other dispersible powder based on vinyl acetate or any other hygroscopic compound dispersible in water, such as SBR-based adhesives, vinyl acetate, acrylics, etc. Dispersible polymers were added to the adhesive composition in the following ratios:
10-250% of the mass of the expanded perlite;
200-250% of the mass of the expanded perlite;
5-300% of the mass of the expanded perlite.
The fourth component
Defoamers, for example antifoamers such as Vinapor DF 9010F or any other chemical additive that reduces and retards foam formation. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent the formation of foam or is added to destroy foam already formed. Preferably, a defoaming agent may be added to the adhesive composition in the following ratio:
0.1-65% of the mass of the expanded perlite; or
0.5-20% of the mass of the expanded perlite.
A fifth component
A fibre compound, such as Adfil building fibres or any other polypropylene compound having a fibre length of 6mm or any other chemical or synthetic fibre compound that can be used in cement-based adhesives, or any other fibre used with cement, such as nylon fibres. Preferably, the fiber compound may be added to the adhesive composition in the following ratio:
0.6-15% of the mass of the expanded perlite; or
0.6-0.9% of the mass of the expanded perlite.
Sixth component-optional
Cements such as white cement, portland cement, or any type of cement or high alumina cement. Preferably, the cement may be added to the adhesive composition in the following ratio:
600-1000% of the mass of the expanded perlite;
the mass of the expanded perlite is 800-950 percent;
250-1700% of the mass of the expanded perlite;
350-900% of the mass of the expanded perlite; or
350-1700% of the mass of the expanded perlite.
As indicated above, the adhesive composition comprising expanded perlite may be free of cement. The resulting cement-free adhesive composition is a lightweight adhesive for indoor gluing. Such adhesives may be sold as cream adhesives.
Seventh ingredient-optional
Gypsum and retarder such as HYCON R7200 manufactured by BASF corporation or any other modified polymer retarder replaces cement. Gypsum can be added to the adhesive composition at a rate of 600% to 900% of the mass of the expanded perlite, and a retarder can be added depending on the desired open time.
Eighth component-optional
The adhesive used to attach the facings may also contain additives, hereinafter referred to as accelerators, for increasing the bonding time of the adhesive. The accelerator may be calcium formate, calcium chloride or any other additive that may be used to accelerate the bond time of the adhesive. The accelerator may be added to the adhesive composition at a rate of 5% to 15% by mass of the expanded perlite.
Process steps
The expanded perlite and all of the other ingredients described above for the adhesive composition can be mixed together in any order to form a powdered adhesive composition.
The above powdered adhesive composition can be mixed with water to produce a glue for gluing any synthetic or natural stone tile to any surface. Due to the inherent properties of expanded perlite, water can be added to the powdered adhesive composition in the following mass ratios: about 0.7:1 (which means that about 0.7-1 liter of water can be added per 1kg of powder) to about 1: 1. This means that water may be added to the powdered adhesive composition at a ratio of 70% to 100% by mass of the powdered adhesive composition. Alternatively, water may be added to the powdered adhesive composition in a mass ratio of about 0.6:1 to about 1: 1. In other words, water may be added to the powdered adhesive composition at a ratio of 60% to 100% by mass of the powdered adhesive composition.
The resulting adhesive composition consistent with the present disclosure had the following adhesive strength:
(A) over 0.5MPa after 28 days;
(B) more than 1MPa after 28 days;
(C) between 0.5MPa and 1.5MPa after 28 days;
(D) between 0.5MPa and 1MPa after 28 days;
(E) after 28 days, the pressure is between 0.3 and 2.5 MPa;
(F) between 0.5MPa and 2.5MPa after 28 days;
(G) (i) greater than 0.5MPa after 28 days; more than 1MPa after 28 days; between 0.5MPa and 2.5MPa after 28 days; or between 0.5MPa and 1MPa after 28 days; and (ii) has the above adhesive strength after the adhesive has been immersed in water;
(H) (i) greater than 0.5MPa after 28 days; more than 1MPa after 28 days; between 0.5MPa and 2.5MPa after 28 days; or between 0.5MPa and 1MPa after 28 days; and (ii) the above adhesive strength after the adhesive has been immersed in water for at least 1 day; and
(I) (i) greater than 0.5MPa after 28 days; more than 1MPa after 28 days; between 0.5MPa and 2.5MPa after 28 days; or between 0.5MPa and 1MPa after 28 days; and (ii) has the above-described adhesive strength after the adhesive has been immersed in water for at least 20 days.
Examples
Examples of adhesives are shown in table 2, wherein the ingredients and their approximate amounts used to produce a powdered adhesive composition comprising expanded perlite for use in attaching stone tiles are shown:
TABLE 2
Figure BDA0002132004720000131
By mixing the ingredients and amounts illustrated in table 2, about 9kg of the powdered adhesive composition was then produced. Water, for example, but not limited to, 7.5 liters, is added to the powdered adhesive composition to create a glue with which the stone veneer or tile is adhered to a surface, after which the glue solidifies and the tile thereafter remains adhered to the surface.
The mixing of the exemplary ingredients and amounts shown in table 2 produced an adhesive that met the characteristics C2TE S1 of any of the following european adhesive standards: EN 1346(2007), EN 1308(2007), EN 1347(2007), EN 1348(2007) or EN 12002 (2008). These standards are available on http:// www.techstreet.com or http:// shop.
Laboratory testing of the exemplary powdered adhesive composition disclosed above revealed the following properties of the composition:
TABLE 3
Figure BDA0002132004720000141
Thus, as shown in table 3, the weight of the powdered adhesive composition is less than typical prior art powdered adhesives. This reduced weight reduces shipping and handling costs. Furthermore, the use of expanded perlite instead of sand in a powdered adhesive prolongs the open time of the adhesive after the addition of water, effectively making the perlite based adhesive more suitable for use.
Laboratory tests using the above powdered adhesive composition revealed the following properties of the composition:
TABLE 4
Figure BDA0002132004720000151
Table 4 shows that the adhesive meets the following known adhesive properties: c1, C1T, C1TE, C1TE S1, C1TE S2, C2, C2T, C2TE, C2TE S1, or C2TE S2 of any of the european standards such as: EN 1346(2007), EN 1308(2007), EN 1347(2007), EN 1348(2007) or EN 12002(2008), which are available on http:// www.techstreet.com or http:// shop.
While the foregoing description discloses many embodiments and descriptions of the invention, these are described by way of illustration and should not be construed as limitations on the scope of the invention. The described invention can be implemented with many variations within the scope of the appended claims.

Claims (11)

1. A powdered adhesive composition comprising:
cement;
a dispersible polymer powder;
defoaming agents; and
expanded perlite in at least 10% by volume of the powdered adhesive;
wherein the proportion of cement is 40% to 1505% of the mass of the expanded perlite; and is
Wherein the powdered adhesive composition is an adhesive and the adhesive strength of the adhesive exceeds 0.3MPa after 28 days.
2. The composition of claim 1, further comprising a cellulose ether compound.
3. The composition of claim 1, further comprising a fiber compound.
4. The composition of claim 1 wherein the cement is white cement.
5. The composition of claim 1, wherein the cement is portland cement.
6. The composition of claim 1, further comprising an accelerator.
7. The composition of claim 2, wherein the cellulose ether compound is a Methocel polymer.
8. The composition according to claim 1, wherein the dispersible polymer powder is a vinyl acetate-based dispersible powder.
9. The composition of claim 3, wherein the fiber compound is a polypropylene compound.
10. The composition of claim 1, wherein the adhesive strength of the adhesive is between 0.5MPa and 2.5MPa after 28 days and after at least 20 days of submersion.
11. The composition of claim 1, wherein the dry blended density of the powdered adhesive composition is 250kg/m3～1500kg/m3。
CN201910641414.5A 2019-07-16 2019-07-16 Light weight adhesive composition Pending CN112239338A (en)

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