CN113799453A - Isolation particle and preparation method and application thereof - Google Patents
Isolation particle and preparation method and application thereof Download PDFInfo
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- CN113799453A CN113799453A CN202111076238.9A CN202111076238A CN113799453A CN 113799453 A CN113799453 A CN 113799453A CN 202111076238 A CN202111076238 A CN 202111076238A CN 113799453 A CN113799453 A CN 113799453A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
- E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/12—Mixture of at least two particles made of different materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/30—Particles characterised by physical dimension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides isolation particles and a preparation method and application thereof, wherein the preparation raw materials of the isolation particles comprise limestone, fluorite, dolomite and gypsum, and the limestone comprises 40-60 wt% of siliceous limestone. The isolation particles prepared according to the formula meet the requirements that the Mohs hardness is 3-6 and the whiteness value is less than 70%, and when the isolation particles are used for pre-paving the anti-sticking waterproof roll, the problems that the particles of the protective layer deeply sink into the glue layer and damage the waterproof layer in the transport process of the roll are avoided; and moreover, the whiteness value is moderate, the normal construction of operators can not be influenced, and the problems of deformation and bulging of the base material can be avoided.
Description
Technical Field
The invention belongs to the technical field of waterproofing, relates to a composition material of a waterproof coiled material, and particularly relates to isolation particles and a preparation method and application thereof.
Background
The waterproof coiled material is mainly used for building walls, roofs, tunnels, highways, refuse landfills and the like, can resist external rainwater and underground water leakage, can be curled into a roll-shaped flexible building material product, and is used as leakage-free connection between an engineering foundation and a building.
The pre-paved anti-sticking waterproof coiled material is mainly applied to the positions of basement bottom plates, roofs and the like of buildings, and the waterproof coiled material coated with the high-molecular self-adhesive glue film layer is laid on a base surface in a vacant mode, and then structural concrete is poured, so that the concrete slurry and the glue film layer of the coiled material are tightly combined. The existing pre-laid reverse-adhesion coiled material generally comprises an isolating film, a self-adhesion layer, a waterproof layer, a self-adhesion layer and a protective layer.
For example CN 204622740U discloses a take polymer pressure sensitive adhesive self-adhesion waterproofing membrane of overlap joint limit protection film, the coiled material be multilayer laminated structure, multilayer structure is compound as an organic whole, the cross section structure of coiled material is from last to being mineral grained layer, hot melt pressure sensitive adhesive layer, polymer sheet layer down in proper order, wherein be equipped with the protection coiled material in the one end of coiled material, the overlap joint limit protective film structure that the coiled material overlap joint of being convenient for used, the protective film structure comprises protection film, pressure sensitive adhesive layer and barrier film substrate layer, the protection film bonds on hot melt pressure sensitive adhesive layer, pressure sensitive adhesive layer bonds below polymer sheet layer, the barrier film substrate layer bonds below pressure sensitive adhesive layer. The protective layer is a common mineral particle layer.
CN 203901830U discloses a high-strength sand-faced waterproof coiled material, which comprises a substrate layer, wherein a waterproof asphalt layer is arranged on the upper surface of the substrate layer, an anti-aging layer is arranged on the upper surface of the waterproof asphalt layer, and a sand-faced layer is arranged on the upper surface of the anti-aging layer; the lower surface of the substrate layer is provided with an isolation film layer. When the pre-paving reverse adhesion method is adopted for construction, the sand surface layer can effectively isolate the sizing material layer, cement powder does not need to be scattered, sizing material adhesion is avoided, and meanwhile, the material performance degradation caused by the influence of natural conditions such as temperature and illumination after the sizing material layer and the waterproof coiled material are exposed in air for a long time can be prevented.
CN 212827206U discloses a wet-laid PVC pre-laid reverse-adhesion waterproof roll, which is compounded by an anti-adhesion isolation sand layer, a self-adhesion layer, a fluorocarbon film protective layer, a polyvinyl chloride base material layer and a polyester non-woven fabric layer from top to bottom in sequence when viewed from the cross section; the anti-sticking isolation sand layer is protection sand with the grain diameter of 30-60 meshes; the self-adhesive layer is a butyl rubber layer or a hot-melt pressure-sensitive adhesive layer; the fluorocarbon film protective layer is fluorocarbon paint; the PVC pre-paved anti-sticking waterproof roll capable of being wet-paved is characterized in that an anti-sticking isolation sand layer, a self-adhesive layer and a fluorine carbon film protection layer on one side are flush with each other in the width direction, the flush end face of the anti-sticking isolation sand layer, the self-adhesive layer and the fluorine carbon film protection layer is a first flush face, a polyvinyl chloride base material layer and a polyester non-woven fabric layer extend outwards to form a first lap edge by taking the first flush face as a reference, and the polyvinyl chloride base material layer of the first lap edge is flush with two polyester non-woven fabric layers; the anti-sticking isolation sand layer, the self-adhesive layer, the fluorocarbon film protective layer and the polyvinyl chloride base material layer on the other side extend outwards by taking the end face of the polyester non-woven fabric layer as a reference to form a second lap joint edge.
Above-mentioned scheme has improved the performance of pre-paved anti-sticking waterproofing membrane from overall structure, but the inoxidizing coating that ordinary mineral particles commonly used among the prior art constitutes has too big whiteness value, because the reflexibility is stronger in the work progress, causes constructor dazzlingly easily to influence the work progress. Moreover, the common mineral particles in the prior art are white cement, the white cement and the pressure sensitive adhesive are combined to have the defect of particle falling, and the feet are easy to stick during construction; and the hardness of the white cement is higher, and the waterproof performance of the waterproof layer is easy to damage in the construction process.
Therefore, there is a need for an improvement of the protective layer material in the pre-laid reverse-adhered waterproofing membrane.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an isolation particle and a preparation method and application thereof, and particularly relates to an isolation particle suitable for a pre-paved reverse-bonding waterproof coiled material and a preparation method and application thereof. The particle size of the isolation particles is moderate, the Mohs hardness and the whiteness value of the isolation particles meet the requirements of transportation and construction, and the construction effect and the construction efficiency are ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides an isolated particle, which is prepared from the following raw materials in parts by weight: 75-90 parts of limestone, 5-10 parts of fluorite, 5-10 parts of dolomite and 5-10 parts of gypsum.
The limestone comprises 40-60 wt% of siliceous limestone.
The hardness of the isolation particles prepared from the raw materials is moderate, so that the problem that when the isolation particles are used for pre-paving the anti-sticking waterproof roll, the protective layer particles sink into the glue layer and damage the waterproof layer is effectively avoided. Moreover, the isolation particles are convenient to mix with the pigment, can freely arrange the pigment, and can effectively reduce the whiteness value on the surface of the coiled material, so that the pre-paved anti-adhesion water-drainage coiled material comprising the isolation particles cannot cause dazzling of operators in the construction process, and the construction efficiency is improved.
The limestone content of the raw material for preparing the spacer particles is 75 to 90 parts by weight, and may be, for example, 75 parts, 78 parts, 80 parts, 81 parts, 84 parts, 85 parts, 88 parts or 90 parts, but is not limited to the values listed, and other values not listed in the numerical ranges are also applicable.
The amount of fluorite in the raw material for preparing the spacer particles is 5 to 10 parts by weight, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
The isolating particle is prepared from 5-10 parts by weight of dolomite in the raw materials, such as 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
The amount of gypsum in the raw material for preparing the spacer particles is 5 to 10 parts by weight, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts or 10 parts, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
The limestone of the invention comprises 40 to 60 wt% of siliceous limestone, which may be, for example, 40 wt%, 45 wt%, 50 wt%, 55 wt% or 60 wt%, but is not limited to the recited values, and other values not recited within the range of values are equally applicable.
Preferably, the mass ratio of fluorite, dolomite and gypsum is 1 (0.8-1.2) to (0.8-1.2), and may be, for example, 1:0.8:0.8, 1:0.8:1.2, 1:1:1, 1:1.2:0.8 or 1:1.2:1.2, but is not limited to the values recited, and other values not recited within the range of values are equally applicable.
Preferably, the particle size of the limestone is less than or equal to 50 μm; the particle diameter D50 is 35 to 42 μm, and may be, for example, 35 μm, 36 μm, 37 μm, 38 μm, 39 μm, 40 μm, 41 μm or 42 μm, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
Preferably, the particle size of the fluorite is less than or equal to 6.3 mu m; the particle diameter D50 is 3.6 to 4.2. mu.m, and may be, for example, 3.6. mu.m, 3.7. mu.m, 3.8. mu.m, 3.9. mu.m, 4. mu.m, 4.1. mu.m or 4.2. mu.m, but is not limited to the values listed, and other values not listed in the numerical ranges are also applicable.
Preferably, the grain size of the dolomite is less than or equal to 30 mu m; the particle diameter D50 is 20 to 25 μm, and may be, for example, 20 μm, 21 μm, 22 μm, 23 μm, 24 μm or 25 μm, but is not limited to the values listed, and other values not listed in the numerical range are also applicable.
Preferably, the gypsum has a particle size of 50 μm or less and the particle size D50 is 42-48 μm, for example 42 μm, 43 μm, 44 μm, 45 μm, 46 μm, 47 μm or 48 μm, but is not limited to the values listed, and other values not listed in the range of values are equally applicable.
Preferably, the raw material for preparing the isolated particles further comprises a modifier.
Preferably, the modifier comprises the following components in parts by weight:
the amount of the ultraviolet absorber in the modifier is 2 to 3 parts by weight, for example, 2 parts, 2.5 parts or 3 parts, but is not limited to the values listed, and other values not listed in the numerical ranges are also applicable.
The weight portion of the coupling agent in the modifier is 3 to 5 parts, and may be, for example, 3 parts, 4 parts or 5 parts, but is not limited to the recited values, and other values not recited in the numerical ranges are also applicable.
The weight portion of the penetrating agent in the modifier is 1-2 parts, such as 1 part, 1.5 parts or 2 parts, but is not limited to the recited values, and other values not recited in the numerical range are also applicable.
The modifier contains 0.5 to 1 part by weight of pigment, for example 0.5, 0.8 or 1 part, but is not limited to the cited values, and other values not listed in the numerical ranges are equally applicable.
The ultraviolet ray absorber of the present invention includes, but is not limited to, benzotriazole-based ultraviolet ray absorbers.
The coupling agent of the present invention includes, but is not limited to, a silane coupling agent.
Preferably, the spacer particles have a particle size in the range of 200-500 μm, a Mohs hardness of 3-6, and a whiteness value of < 70%.
The particle size range of the isolated particles of the present invention is 200-500 μm, which means that the minimum particle size of the isolated particles is not less than 200 μm, such as 200 μm, 210 μm, 220 μm, 230 μm, 240 μm or 250 μm, but is not limited to the listed values, and other values not listed in the numerical range are also applicable; the maximum particle size of the spacer particles is not more than 500. mu.m, and may be, for example, 450. mu.m, 460. mu.m, 470. mu.m, 480. mu.m, 490. mu.m or 500. mu.m, but is not limited to the values recited, and other values not recited within the range of values are equally applicable.
The particle size range of the isolation particles is 200-500 mu m, so that the actual requirement of pre-paved anti-sticking waterproof coiled material can be met. When the particle size is less than 200 mu m, the bonding effect of the pre-paved reverse-bonded waterproof roll is influenced; when the particle size is larger than 500 mu m, the isolating particles are easy to fall off from the bonding layer of the pre-paved reverse-bonded waterproof coiled material, and the peeling strength of the coiled material and the post-cast concrete is influenced.
The release particles obtained from the release particle formulations of the present invention have a mohs hardness of 3 to 6, and may be, for example, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, or 6.0, but are not limited to the recited values, and other values not recited within the range of values are equally applicable.
When the Mohs hardness exceeds 6, the isolation particles are easy to scratch the base layer of the waterproof roll material, so that the waterproof effect is influenced; and when the Mohs hardness is lower than 3.0, the isolated particles are easy to pulverize, and the caused dust is difficult to meet the environmental protection requirement.
The spacer particles have a whiteness value of < 70%, and can be, for example, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, or 70%, but are not limited to the recited values, and other values within the range of values not recited are equally applicable, preferably 30-40%.
If the whiteness value exceeds 70%, when the reflective waterproof roll is used for construction of pre-paved anti-sticking waterproof rolls, the construction progress is easily affected because the reflected light is too strong. And when the whiteness value is less than 30%, the pre-laid anti-sticking waterproof roll material can cause the deformation of the substrate layer due to the surface heat absorption, so that the risk of bulging and overlap edge cracking occurs.
In a second aspect, the present invention provides a method of preparing the spacer particle according to the first aspect, the method comprising the steps of:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture to obtain a sintered material;
(2) bleaching the sintered material obtained in the step (1), drying and crushing to obtain primary particles;
(3) preheating the primary particles obtained in the step (2) until the water content is less than or equal to 0.3%, and crushing and sieving after curing to obtain the isolated particles.
Preferably, the sintering temperature in step (1) is 1200-; the time is 8-12h, for example 8h, 9h, 10h, 11h or 12h, but is not limited to the values listed, and other values not listed in the numerical range are equally applicable.
Preferably, the bleaching method in step (2) comprises water immersion bleaching.
Through the operation of soaking and bleaching, the composition of the isolated particles and the pigment is facilitated, and the whiteness value of the isolated particles is controlled within a numerical range of less than or equal to 70 percent.
Preferably, the temperature of the drying in step (2) is 350-; the time is 1-2h, for example 1h, 1.2h, 1.5h, 1.6h, 1.8h or 2h, but is not limited to the values listed, and other values not listed in the range of values are equally applicable.
Preferably, the primary particles of step (2) have a particle size of 180-550 μm.
The particle size of the primary particles of the present invention is 180-550 μm, which means that the minimum particle size of the primary particles is not less than 180 μm, and may be, for example, 180 μm, 190 μm, 200 μm, 210 μm or 220 μm, but is not limited to the values listed, and other values not listed in the range of the values are also applicable; the primary particles have a maximum particle diameter of not more than 550 μm, for example 450 μm, 480 μm, 500 μm, 520 μm, 540 μm or 550 μm, but are not limited to the values listed, and other values not listed in the range of values are equally applicable.
Preferably, the primary particles are graded primary particles.
The primary particles having a particle size of 380-550 μm (i.e., primary particles having a particle size of-40 mesh to +30 mesh) account for 0.5 to 1 wt% of the total amount of the primary particles, and may be, for example, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, or 1 wt%, but are not limited to the values recited, and other values not recited within the range of values are also applicable.
Primary particles having a particle size of 270-380 μm (i.e., primary particles having a particle size of-50 mesh to +40 mesh) account for 20 to 40 wt%, for example, 20 wt%, 25 wt%, 30 wt%, 35 wt%, or 40 wt%, based on the total amount of the primary particles, but are not limited to the recited values, and other values not recited within the range of values are also applicable.
Primary particles having a particle size of 250-270 μm (i.e., primary particles having a particle size of-60 mesh to +50 mesh) account for 5 to 20 wt%, for example, 5 wt%, 8 wt%, 10 wt%, 12 wt%, 15 wt%, 18 wt%, or 20 wt%, based on the total amount of the primary particles, but are not limited to the recited values, and other values not recited within the range of values are also applicable.
The primary particles having a particle size of 230-250 μm (i.e., primary particles having a particle size of-65 mesh to +60 mesh) account for 50 to 70 wt% of the total amount of the primary particles, and may be, for example, 50 wt%, 55 wt%, 60 wt%, 65 wt%, or 70 wt%, but are not limited to the recited values, and other values not recited within the range of values are also applicable.
Preferably, the temperature of the preheating in step (3) is 100-110 ℃, and may be, for example, 100 ℃, 101 ℃, 102 ℃, 103 ℃, 104 ℃, 105 ℃, 106 ℃, 107 ℃, 108 ℃, 109 ℃ or 110 ℃, but is not limited to the enumerated values, and other unrecited values in the numerical range are also applicable; the time period is 120-125min, such as 120min, 121min, 122min, 123min, 124min or 125min, but is not limited to the values listed, and other values not listed in the value range are also applicable.
Under the preheating condition provided by the invention, the water content of the primary particles can be reduced to be below 0.3%, so that the later processing is facilitated.
Preferably, the curing agent used in the curing in step (3) is 1 to 3 parts by weight, such as 1 part, 2 parts or 3 parts, but not limited to the recited values, and other values not recited in the numerical ranges are also applicable.
Preferably, the preparation method further comprises a modification step after preheating and before curing: uniformly mixing the modifier and the preheated primary particles according to the formula amount, and carrying out modification treatment.
The modifier comprises an ultraviolet absorber, a coupling agent, a penetrating type treating agent and a pigment.
The addition of the ultraviolet absorbent can enable the isolation particles to meet the ultraviolet resistance requirement of the waterproof roll; the addition of the coupling agent improves the interfacial properties between the modifier and the primary particles and improves the bonding strength between the modifier and the primary particles; the addition of the penetrating treatment agent makes the modifier more easily penetrate into the preheated primary particles, and ensures the performance of the isolated particles obtained after crushing.
The pigment of the present invention is an inorganic pigment, including but not limited to red iron oxide.
Preferably, the modification temperature is 160-190 ℃, for example 160 ℃, 165 ℃, 170 ℃, 175 ℃, 180 ℃, 185 ℃ or 190 ℃, but not limited to the recited values, and other unrecited values within the range of values are equally applicable; the time is 60-120min, for example 60min, 70min, 80min, 90min, 100min, 110min or 120min, but is not limited to the values listed, and other values not listed in the range of values are equally applicable.
As a preferable technical solution of the preparation method according to the second aspect of the present invention, the preparation method comprises the steps of:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture at 1200-1400 ℃ for 8-12h to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying at 350-;
(3) preheating the primary particles obtained in the step (2) at the temperature of 100 ℃ and 110 ℃ for 120 ℃ and 125min to ensure that the water content of the primary particles is less than or equal to 0.3 percent, then uniformly mixing the modifier with the preheated primary particles according to the formula amount, carrying out modification treatment at the temperature of 160 ℃ and 190 ℃ for 60-120min, curing, crushing and sieving to obtain the isolated particles.
In a third aspect, the present invention provides a use of the spacer particles of the first aspect for pre-laying a reverse-adhesion waterproofing membrane
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
the isolation particles provided by the invention have a particle size range of 200-; and moreover, the whiteness value is moderate, the normal construction of operators can not be influenced, and the problems of deformation and bulging of the base material can be avoided.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Example 1
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 50 wt% of siliceous limestone.
The particle size of the limestone is less than or equal to 50 mu m, and the particle size D50 is 38 mu m; the particle size of the fluorite is less than or equal to 6.3 mu m, and the particle size D50 is 4 mu m; the particle size of the limestone is less than or equal to 30 mu m, and the particle size D50 is 22 mu m; the particle size of the limestone is less than or equal to 50 mu m, and the particle size D50 is 45 mu m.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture for 10 hours at 1300 ℃ to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1.5h at 365 ℃, and then crushing to obtain primary particles with the particle size of 180-; primary particles having a particle size of-40 mesh to +30 mesh represent 0.6 wt% of the total primary particles, primary particles having a particle size of-50 mesh to +40 mesh represent 28 wt% of the total primary particles, primary particles having a particle size of-60 mesh to +50 mesh represent 8 wt% of the total primary particles, and primary particles having a particle size of-65 mesh to +60 mesh represent 60 wt% of the total primary particles;
(3) preheating the primary particles obtained in the step (2) at 105 ℃ for 122min to ensure that the water content of the primary particles is less than or equal to 0.3%, curing (the curing agent is American PQ sealing curing agent, and 2 parts by weight), crushing and sieving to obtain the isolated particles with the particle size range of 200-500 mu m.
Example 2
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 45 wt% of siliceous limestone.
The particle size of the limestone is less than or equal to 50 mu m, and the particle size D50 is 35 mu m; the particle size of the fluorite is less than or equal to 6.3 mu m, and the particle size D50 is 3.6 mu m; the particle size of the limestone is less than or equal to 30 mu m, and the particle size D50 is 20 mu m; the particle size of the limestone is less than or equal to 50 mu m, and the particle size D50 is 42 mu m.
The spacer particles were prepared in the same manner as in example 1.
Example 3
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 55 wt% of siliceous limestone.
The particle size of the limestone is less than or equal to 50 mu m, and the particle size D50 is 42 mu m; the particle size of the fluorite is less than or equal to 6.3 mu m, and the particle size D50 is 4.2 mu m; the particle size of the limestone is less than or equal to 30 mu m, and the particle size D50 is 25 mu m; the particle size of the limestone is less than or equal to 50 mu m, and the particle size D50 is 48 mu m.
The spacer particles were prepared in the same manner as in example 1.
Example 4
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 40 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The spacer particles were prepared in the same manner as in example 1.
Example 5
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 60 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The spacer particles were prepared in the same manner as in example 1.
Example 6
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 50 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The spacer particles were prepared in the same manner as in example 1.
Example 7
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 50 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The spacer particles were prepared in the same manner as in example 1.
Example 8
This example provides an isolated particle having the same raw material composition as that of example 1.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the mixture at 1250 ℃ for 11 hours to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1.8h at 360 ℃, and then crushing to obtain primary particles with the particle size of 180-; primary particles having a particle size of-40 mesh to +30 mesh represent 0.5 wt% of the total primary particles, primary particles having a particle size of-50 mesh to +40 mesh represent 20 wt% of the total primary particles, primary particles having a particle size of-60 mesh to +50 mesh represent 20 wt% of the total primary particles, and primary particles having a particle size of-65 mesh to +60 mesh represent 50 wt% of the total primary particles;
(3) preheating the primary particles obtained in the step (2) at 105 ℃ for 122min to ensure that the water content of the primary particles is less than or equal to 0.3%, curing (the curing agent is American PQ sealing curing agent, and the weight part is 1.5 parts), crushing and sieving to obtain the isolation particles with the particle size range of 200-.
Example 9
This example provides an isolated particle having the same raw material composition as that of example 1.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the mixture at 1350 ℃ for 9 hours to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1.2h at 370 ℃, and then crushing to obtain primary particles with the particle size of 180-; primary particles having a particle size of-40 mesh to +30 mesh represent 1 wt% of the total amount of primary particles, primary particles having a particle size of-50 mesh to +40 mesh represent 20 wt% of the total amount of primary particles, primary particles having a particle size of-60 mesh to +50 mesh represent 5 wt% of the total amount of primary particles, and primary particles having a particle size of-65 mesh to +60 mesh represent 70 wt% of the total amount of primary particles;
(3) preheating the primary particles obtained in the step (2) at 105 ℃ for 122min to ensure that the water content of the primary particles is less than or equal to 0.3%, curing (the curing agent is American PQ sealing curing agent, and the weight part is 2.5 parts), crushing and sieving to obtain the isolation particles with the particle size range of 200-.
Example 10
This example provides an isolated particle having the same raw material composition as that of example 1.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture at 1200 ℃ for 12 hours to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 2h at 350 ℃, and then crushing to obtain primary particles with the particle size of 180-; primary particles having a particle size of-40 mesh to +30 mesh represent 0.5 wt% of the total primary particles, primary particles having a particle size of-50 mesh to +40 mesh represent 40 wt% of the total primary particles, primary particles having a particle size of-60 mesh to +50 mesh represent 5 wt% of the total primary particles, and primary particles having a particle size of-65 mesh to +60 mesh represent 50 wt% of the total primary particles;
(3) preheating the primary particles obtained in the step (2) at 100 ℃ for 125min to ensure that the water content of the primary particles is less than or equal to 0.3 percent, curing (the curing agent is American PQ sealing curing agent, and the weight part is 1 part), crushing and sieving to obtain the isolated particles with the particle size range of 200-500 mu m.
Example 11
This example provides an isolated particle having the same raw material composition as that of example 1.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture for 8 hours at 1400 ℃ to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1h at 380 ℃, and then crushing to obtain primary particles with the particle size of 180-; primary particles having a particle size of-40 mesh to +30 mesh represent 0.6 wt% of the total primary particles, primary particles having a particle size of-50 mesh to +40 mesh represent 28 wt% of the total primary particles, primary particles having a particle size of-60 mesh to +50 mesh represent 8 wt% of the total primary particles, and primary particles having a particle size of-65 mesh to +60 mesh represent 60 wt% of the total primary particles;
(3) preheating the primary particles obtained in the step (2) at 110 ℃ for 120min to ensure that the water content of the primary particles is less than or equal to 0.3%, curing (the curing agent is American PQ sealing curing agent, and 3 parts by weight), crushing and sieving to obtain the isolated particles with the particle size range of 200-500 mu m.
Example 12
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 50 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture for 10 hours at 1300 ℃ to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1.5h at 365 ℃, and then crushing to obtain primary particles with the particle size of 180-; the primary particles had the same graded size distribution as in example 1;
(3) preheating the primary particles obtained in the step (2) at 105 ℃ for 122min to ensure that the water content of the primary particles is less than or equal to 0.3 percent, then uniformly mixing a modifier with the preheated primary particles according to the formula amount, carrying out modification treatment for 90min at 180 ℃, curing (the curing agent and the added weight part thereof are the same as those in the embodiment 1), crushing and sieving to obtain isolated particles with the particle size range of 200-;
the modifier in the step (3) is ultraviolet absorbent UV-234, coupling agent A1100, penetrating treatment agent (Pasteur CC700) and iron oxide red.
Example 13
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 50 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture for 10 hours at 1300 ℃ to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1.5h at 365 ℃, and then crushing to obtain primary particles with the particle size of 180-; the primary particles had the same graded size distribution as in example 1;
(3) preheating the primary particles obtained in the step (2) at 105 ℃ for 122min to ensure that the water content of the primary particles is less than or equal to 0.3 percent, then uniformly mixing a modifier and the preheated primary particles according to the formula amount, carrying out modification treatment for 120min at 160 ℃, curing (the curing agent and the added weight part thereof are the same as those in the embodiment 1), crushing and sieving to obtain isolated particles with the particle size range of 200-;
the modifier in the step (3) is ultraviolet absorbent UV-234, coupling agent A1100, penetrating treatment agent (Pasteur CC700) and iron oxide red.
Example 14
The embodiment provides an isolation particle, which comprises the following raw materials in parts by weight:
the limestone comprises 50 wt% of siliceous limestone.
The limestone, fluorite, dolomite and gypsum were independently the same as those in example 1, respectively.
The preparation method of the isolated particles comprises the following steps:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture for 10 hours at 1300 ℃ to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying for 1.5h at 365 ℃, and then crushing to obtain primary particles with the particle size of 180-; the primary particles had the same graded size distribution as in example 1;
(3) preheating the primary particles obtained in the step (2) at 105 ℃ for 122min to ensure that the water content of the primary particles is less than or equal to 0.3 percent, then uniformly mixing a modifier and the preheated primary particles according to the formula amount, carrying out modification treatment for 60min at 190 ℃, curing (the curing agent and the added weight part thereof are the same as those in the embodiment 1), crushing and sieving to obtain isolated particles with the particle size range of 200-;
the modifier in the step (3) is ultraviolet absorbent UV-234, coupling agent A1100, penetrating treatment agent (Pasteur CC700) and iron oxide red.
Example 15
This example provides isolated particles similar to those of example 1 except that the isolated particles obtained by pulverizing and sieving in step (3) had a particle size D90 of 180. mu.m.
Example 16
This example provides isolated particles similar to those of example 1, except that the isolated particles obtained by pulverizing and sieving in step (3) have a particle size of-30 mesh to +24 mesh.
Comparative example 1
This comparative example provides a spacer particle similar to example 1 except that the limestone contains 30 wt% siliceous limestone.
Comparative example 2
This comparative example provides a spacer particle similar to example 1 except that the limestone contains 70 wt% of siliceous limestone.
Comparative example 3
This comparative example provides an isolated particle having the same composition as example 1.
The preparation method of the isolated particles is the same as that of the embodiment 1 except that the isolated particles are preheated to the water content of 0.5% in the step (3).
Performance testing
Examples 1-16 and comparative examples 1-3 were determined to provide the mohs hardness and whiteness values of the spacer particles, the mohs hardness being measured using a mohs hardness meter and the whiteness value being measured using a whiteness meter, and the results are shown in table 1.
TABLE 1
In conclusion, when the isolating particles provided by the invention have the particle size range of 200-500 mu m, the Mohs hardness is 3-6, and the whiteness value is less than or equal to 70 percent, the problems that the particles of the protective layer deeply sink into the adhesive layer and damage the waterproof layer in the transportation process of the coiled material are solved when the isolating particles are used for pre-laying the anti-sticking waterproof coiled material; and moreover, the whiteness value is moderate, the normal construction of operators can not be influenced, and the problems of deformation and bulging of the base material can be avoided.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The isolated particle is characterized in that the isolated particle is prepared from the following raw materials in parts by weight:
the limestone comprises 40-60 wt% of siliceous limestone.
2. The insulation particle of claim 1 wherein the mass ratio of fluorite, dolomite and gypsum is 1 (0.8-1.2) to (0.8-1.2).
3. The spacer particle according to claim 1 or 2, wherein the limestone has a particle size of 50 μm or less, a particle size D50 of 35-42 μm;
preferably, the particle size of the fluorite is less than or equal to 6.3 mu m, and the particle size D50 is 3.6-4.2 mu m;
preferably, the grain diameter of the dolomite is less than or equal to 30 mu m, and the grain diameter D50 is 20-25 mu m;
preferably, the particle size of the gypsum is less than or equal to 50 μm, and the particle size D50 is 42-48 μm.
4. The spacer particle of any one of claims 1 to 3 wherein the starting material for the spacer particle further comprises a modifier;
preferably, the modifier comprises the following components in parts by weight:
5. the spacer particle as claimed in any one of claims 1 to 4, wherein the spacer particle has a particle size in the range of 200-500 μm, a Mohs hardness of 3-6 and a whiteness value of < 70%.
6. A method of making the spacer particle of any of claims 1-5, wherein the method comprises the steps of:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture to obtain a sintered material;
(2) bleaching the sintered material obtained in the step (1), drying and crushing to obtain primary particles;
(3) preheating the primary particles obtained in the step (2) until the water content is less than or equal to 0.3%, solidifying, crushing and sieving to obtain the isolated particles.
7. The method as claimed in claim 6, wherein the sintering temperature in step (1) is 1200-1400 ℃ for 8-12 h;
preferably, the bleaching method in the step (2) comprises soaking bleaching;
preferably, the drying temperature in the step (2) is 350-380 ℃, and the time is 1-2 h;
preferably, the primary particles of step (2) have a particle size of 180-;
preferably, the preheating temperature in the step (3) is 100-;
preferably, the weight portion of the curing agent used for curing in the step (3) is 1-3.
8. The method according to claim 6 or 7, further comprising a modification step after preheating and before curing: uniformly mixing the modifier and the preheated primary particles according to the formula amount, and carrying out modification treatment;
preferably, the temperature for modification is 160-190 ℃ and the time is 60-120 min.
9. The method according to any one of claims 6 to 8, characterized by comprising the steps of:
(1) uniformly mixing limestone, fluorite, dolomite and gypsum according to the formula amount, and sintering the obtained mixture at 1200-1400 ℃ for 8-12h to obtain a sintered material;
(2) soaking and bleaching the sintered material obtained in the step (1), drying at 350-;
(3) preheating the primary particles obtained in the step (2) at the temperature of 100 ℃ and 110 ℃ for 120 ℃ and 125min to ensure that the water content of the primary particles is less than or equal to 0.3 percent, then uniformly mixing the modifier with the preheated primary particles according to the formula amount, carrying out modification treatment at the temperature of 160 ℃ and 190 ℃ for 60-120min, and crushing and sieving after curing to obtain the isolation particles.
10. Use of the spacer particles according to any of claims 1 to 5 for pre-laying a reverse-adhesive waterproofing web.
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| CN112874090A (en) * | 2021-01-12 | 2021-06-01 | 北京东方雨虹防水技术股份有限公司 | Waterproof coiled material |
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| JP2004339058A (en) * | 2004-07-02 | 2004-12-02 | Tokyo Energy & Systems Inc | Concrete composition for heat insulation and concrete for heat insulation |
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