WO2022100453A1 - 一种改性硅酸钙板及其表面处理方法以及应用 - Google Patents

一种改性硅酸钙板及其表面处理方法以及应用 Download PDF

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Publication number
WO2022100453A1
WO2022100453A1 PCT/CN2021/127223 CN2021127223W WO2022100453A1 WO 2022100453 A1 WO2022100453 A1 WO 2022100453A1 CN 2021127223 W CN2021127223 W CN 2021127223W WO 2022100453 A1 WO2022100453 A1 WO 2022100453A1
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Prior art keywords
calcium silicate
silicate board
modified calcium
gluing
sizing
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PCT/CN2021/127223
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English (en)
French (fr)
Inventor
顾海兵
丁永平
Original Assignee
江苏朗园美盛新材料科技有限公司
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Application filed by 江苏朗园美盛新材料科技有限公司 filed Critical 江苏朗园美盛新材料科技有限公司
Priority to US17/614,516 priority Critical patent/US20220348512A1/en
Publication of WO2022100453A1 publication Critical patent/WO2022100453A1/zh

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    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • C04B41/524—Multiple coatings, comprising a coating layer of the same material as a previous coating layer
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
    • C04B41/5089—Silica sols, alkyl, ammonium or alkali metal silicate cements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • B05D7/54—No clear coat specified
    • B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • B32B9/06—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • C04B28/18—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 mixtures of the silica-lime type
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    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
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    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/457—Non-superficial impregnation or infiltration of the substrate
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/48—Macromolecular compounds
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    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
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    • C04B41/62—Coating or impregnation with organic materials
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    • C—CHEMISTRY; METALLURGY
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
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    • C04B41/68—Silicic acid; Silicates
    • C—CHEMISTRY; METALLURGY
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
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Definitions

  • the invention belongs to the technical field of floors and decorative boards, and in particular relates to the preparation technology of composite decorative boards.
  • Calcium silicate board is a novel decorative material, and its advantages of stability, flame retardancy, formaldehyde-free and low cost are more and more catering to the needs of the market.
  • the known calcium silicate boards are mostly made of powders of inorganic materials such as calcium silicate or calcium carbonate.
  • it is made with silicic acid and lime as the main components, and is made by pulping, papermaking, steam curing and other processes; or with cement, silica sand, asbestos and other fibers as the main components, adding additives and It is made by high-pressure steam curing and pressing by copying method or slurry method. Because it is formed by reaction and crystallization under high temperature and high pressure, the calcium silicate board prepared in essence is mostly calcium silicate crystalline powder.
  • the Chinese invention patent with the publication number CN105859323A discloses a method for treating the surface of a calcium silicate board, which includes the following steps: 1. Prepare a calcium silicate board: wherein the calcium silicate board has opposite first and second surfaces 2. Coating the water glass solution for the first time: coating or spraying the water glass solution that the weight percent concentration is a on the first surface of the calcium silicate plate, so that the water glass solution penetrates into a predetermined thickness of the calcium silicate plate 3.
  • Coating the water glass solution for the second time coating or spraying the water glass solution with a weight percent concentration of b on the first surface of the calcium silicate board, so that the water glass solution infiltrates a predetermined thickness of the calcium silicate board ;
  • a is less than b
  • both a and b are respectively greater than 30% but less than 55%.
  • the technical solution can make the surface structure of the calcium silicate board dense and easy to stick to the surface material, and the surface material can be firmly attached to the calcium silicate board and not easy to peel off. It is also a modification method for the calcium silicate board, but it is only a Simply coat the water glass on the bonding surface that needs to be attached to the surface material, and let the water glass soak into the surface of the substrate.
  • the calcium silicate board with the length and width of 2400mm and 1200mm is only coated with 50g to 60g.
  • the depth only stays in the superficial layer, which can only prevent primary peeling, and still cannot meet the demand for anti-stripping and anti-bending calcium silicate boards on the market, and it is found that the calcium silicate treated by this surface treatment method board, the paper impregnated with triamine is completely non-stick to its hot pressing.
  • the present invention provides a modified calcium silicate board that can strengthen the structure and compactness of the calcium silicate board as a whole, and is convenient for compounding with various surface materials, and a surface treatment method thereof, which can make triamine
  • the impregnated paper and the substrate are directly hot-pressed and bonded, and the surface bonding strength reaches 1MPa; after the veneer, fireproof board and other materials are cold-bonded, the peeling strength of the obtained product meets the requirements, which effectively improves the practicability of the calcium silicate board.
  • a modified calcium silicate board the modification method is: the calcium silicate board is immersed in a silica solution with a solid content of more than 95% until it is completely absorbed To saturation, the impregnated calcium silicate board is then dried.
  • the calcium silicate board is modified by completely impregnating the substrate, which improves the internal bonding strength of the substrate compared with the modification of only coating the surface in the prior art.
  • the calcium silicate board that is completely absorbed to saturation is 25-40kg of silicon dioxide per cubic meter.
  • the above-mentioned surface treatment method of the modified calcium silicate board includes sizing and hardening on any surface of the modified calcium silicate board, and the sizing and hardening includes gluing, leveling and penetration, drying, cooling and polishing.
  • the sizing and hardening is specifically:
  • the first sizing one gluing, one leveling penetration, one drying, one cooling, one polishing;
  • the gluing amount of one gluing in the first sizing is: when the density of the modified calcium silicate board is 900-950kg/m 3 , the gluing amount is 110-120 g/m 2 ; The density of the finished calcium silicate board is 950 ⁇ 1100kg/m 3 , and the amount of glue is 90-100g/m 2 ; when the density of the modified calcium silicate board is 1100 ⁇ 1300kg/m 3 , the amount of glue is 75 -85g/m 2 .
  • water-based two-component epoxy adhesive is used for one-time coating, which has better applicability with the substrate.
  • the drying is carried out at a speed of 10 ⁇ 12m/min into the drying tunnel, the setting temperature of the drying tunnel is 130 ⁇ 150°C, and the length of the drying tunnel is 10 ⁇ 15m.
  • the gluing amount of the secondary gluing is 40-50 g/m 2 .
  • the secondary drying enters the drying tunnel at a speed of 8-10m/min, the setting temperature of the drying tunnel is 130-150°C, and the length of the drying tunnel is 10-15m.
  • water-based acrylic glue plus curing agent isocyanate is used for secondary coating.
  • the weight ratio of water-based acrylic glue and isocyanate is 3.5-10:1, and the optimal ratio is 6-7:1.
  • the optimal ratio has the highest strength. , which is convenient for mass production.
  • an application of a surface-treated modified calcium silicate board is provided, and a surface material is attached to any surface of the modified calcium silicate board.
  • the surface material includes: triamine impregnated paper, veneer, and fireproof board.
  • the method of attaching the surface material includes high temperature hot pressing and cold pressing.
  • the modified calcium silicate board can be compounded with other surface materials, not only the triamine impregnated paper and the modified calcium silicate board can be combined. After direct hot pressing and bonding, the surface bonding strength reaches more than 1MPa, and the peeling strength of the products obtained after cold bonding of veneer, fireproof board and other materials meets the requirements, which effectively improves the practicability of calcium silicate board and has a wider range of applications.
  • the final product after cladding the surface material reduces the consumption cost, and is environmentally friendly and non-toxic.
  • a modified calcium silicate board is to immerse the calcium silicate board in a silica solution with a solid content of more than 95%, completely absorb it to saturation, and then dry the immersed calcium silicate board .
  • the internal binding force of the calcium silicate board before modification and the calcium silicate board after modification were tested respectively, which was 40 kg/f before modification and 70 kg/f after modification.
  • the calcium silicate board modified in Example 1 is subjected to surface treatment: that is, sizing and hardening are performed on either side of the modified calcium silicate board:
  • the first sizing one gluing, one leveling penetration, one drying, one cooling, one polishing, the gluing amount of one gluing in the first sizing is: when the modified silicic acid is completed
  • the density of the calcium board is 910kg/m3
  • the gluing amount is 120g/m 2
  • water-based two-component epoxy glue is used for one-time gluing, and the drying is carried out at a speed of 10m/min.
  • the length is 10m.
  • the drying speed is 8m/min into the drying tunnel, the setting temperature of the drying tunnel is 150°C, and the length of the drying tunnel is 10m.
  • the secondary coating is made of water-based acrylic glue and curing agent isocyanate, and the weight ratio of water-based acrylic glue and isocyanate is 3.5: 1.
  • Example 3-7 the specific method of surface treatment of the modified calcium silicate board is the same as that in Example 2, and the specific parameters of the first sizing and the second sizing are as shown in Table 1.
  • Example 8-16 the surface material was pasted on the calcium silicate board after the surface treatment in the above-mentioned implementation 2-7, and the peel strength of the final product was tested, as shown in Table 2 for details.
  • Example 1 Triamine impregnated paper High temperature hot pressing (single side) not sticky
  • Example 2 Triamine impregnated paper High temperature hot pressing (single side) 1
  • Example 10 Triamine impregnated paper High temperature hot pressing (single side) 1
  • Example 10 Triamine impregnated paper High temperature hot pressing (single side) 1.2
  • Example 11 Example 1 Veneer (with Pur glue) Cold pressing (double-sided) 0.4
  • Example 13 Example 5 Veneer (with Pur glue) Cold pressing (double-sided) 1.7
  • Example 14 Example 1 Fireproof board (with Pur glue) Cold pressing (single side) 0.5
  • Example 6 Fireproof board (with Pur glue) Cold pressing (single side) 1.1
  • Example 16 Example 7 Fireproof board (with Pur glue) Cold pressing (single side) 1.6

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Abstract

一种改性硅酸钙板，属于地板、装饰板技术领域，改性方法是将硅酸钙板浸渍于固含量在95%以上的二氧化硅溶液中，完全吸透至饱和，再将浸渍后的硅酸钙板干燥处理；在改性完成的硅酸钙板的任一面上进行施胶硬化，最终获得的硅酸钙板，能使三胺浸渍纸与其直接热压贴合，表结合强度达到1MPa；木皮、防火板等材料与其冷贴，产品剥离强度均符合要求，有效提高了硅酸钙板的实用性。

Description

一种改性硅酸钙板及其表面处理方法以及应用 技术领域
本发明属于地板、装饰板技术领域，尤其涉及复合装饰板材的制备技术。
 背景技术
随着人民生活水平的提高，对装饰材料的环保、阻燃、美观等要求愈来愈高。硅酸钙板是一种新颖装饰材料，它的稳定性、阻燃性、无甲醛、低成本等优势越来越迎合市场的需求。 
 技术问题
但已知的硅酸钙板，多是以无机材料如硅酸钙或碳酸钙等无机材料的粉末制成。更详细地说，是以硅酸质与石灰质为主要成分，经制浆、抄制、 蒸养等工序制成；或是以水泥、硅沙、石绵等纤维为主要成分，加入添加物经抄取法或流浆法高压蒸养压制而成。由于是在高温高压下反应结晶而成，故实质上制备的硅酸钙板多是硅酸钙结晶粉末。然而，由于硅酸钙结晶粉末间的结合力弱，当要在此类硅酸钙板的表面贴覆一表材时，较为靠近表材的粉末易被表材撕起而剥离，使表材难以与硅酸钙板牢固地贴合，也即表材相当容易被剥离，而细究其原因，是因为硅酸钙板的结构松散，各粉末间的结合力小于粘胶的粘合力，使拉扯的力量直接传递至较为靠近表材的粉末，造成表材易将与表材较为靠近的粉末一同剥离，成为施工上的困难之处。
公告号为CN105859323A的中国发明专利，公开了一种硅酸钙板表层处理方法，包含以下步骤：一、准备一硅酸钙板：其中该硅酸钙板具有相对的第一面与第二面；二、涂布第一次水玻璃溶液：在该硅酸钙板的第一面涂布或喷洒重量百分浓度为a的水玻璃溶液，使水玻璃溶液渗入该硅酸钙板一预定厚度；三、涂布第二次水玻璃溶液：在该硅酸钙板的第一面涂布或喷洒重量百分浓度为b的水玻璃溶液，使水玻璃溶液渗入该硅酸钙板一预定厚度；其中，a小于b，且a与b皆分别大于30％但小于55％。该技术方案能使硅酸钙板表层结构密实而易于贴覆表材，表材可牢固地粘贴于硅酸钙板上不易剥离，也是对硅酸钙板的一种改性方法，但其只是简单的在需要与表材贴合的贴合面进行水玻璃涂布，让水玻璃浸入基板表面，长、宽尺寸为2400mm、1200mm的硅酸钙板也只涂布50克至60克，进入的深度只停留在浅表层，只能防止初级剥离，仍无法满足现在市面上要求的抗剥落，抗弯折的硅酸钙板的需求，而且发现，这种表层处理方法处理后的硅酸钙板，用三胺浸渍纸与其热压是完全粘不住的。
本发明针对现有技术的不足，提供了一种可整体强化硅酸钙板的结构和密实度、方便与各种表材复合的改性硅酸钙板及其表面处理方法，能使三胺浸渍纸与基材直接热压贴合，表结合强度达到1MPa；木皮、防火板等材料与其冷贴后，得到的产品剥离强度均符合要求，有效提高了硅酸钙板的实用性。
为实现本发明目的，提供了以下技术方案：一种改性硅酸钙板，改性方法是：将硅酸钙板浸渍于固含量在95%以上的二氧化硅溶液中，直至完全吸透至饱和，再将浸渍后的硅酸钙板干燥处理。通过完全浸渍基材来改性硅酸钙板，与现有技术中仅在表面涂覆涂层改性相比，提高了基材的内结合强度。
进一步的，所述完全吸透至饱和为每立方米的硅酸钙板吸收二氧化硅的质量为25-40kg。
上述改性硅酸钙板的表面处理方法，包括在改性完成的硅酸钙板的任一面上进行施胶硬化，施胶硬化包括涂胶、流平渗透、烘干、冷却、抛光。
作为优选，施胶硬化具体为：
（1）第一道施胶：一次涂胶、一次流平渗透、一次烘干、一次冷却、一次抛光；
（2）在第一道施胶后的表面上进行第二道施胶：二次涂胶、二次烘干、二次抛光。
作为优选，第一道施胶中一次涂胶的上胶量为：当改性完成的硅酸钙板的密度在900~950kg/m 3，上胶量110-120g/m 2；当改性完成的硅酸钙板的密度在950~1100kg/m 3，上胶量在90-100g/m 2；当改性完成的硅酸钙板的密度在1100~1300kg/m 3，上胶量75-85g/m 2。
作为优选，一次涂胶采用水性双组份环氧胶，与基材有更好的适用性。
作为优选，一次烘干以10~12m/min的速度进烘道，烘道设置温度130~150℃，烘道长度为10~15m。
作为优选，二次涂胶的上胶量为40~50g/m 2。
作为优选，二次烘干以8-10m/min的速度进烘道，烘道设置温度130~150℃，烘道长度为10~15m。
作为优选，二次涂胶采用水性丙烯酸胶加固化剂异氰酸酯, 水性丙烯酸胶与异氰酸酯的重量配比为3.5-10：1，最佳配比为6-7:1，最佳配比时强度最高，便于量产化。
为实现本发明目的，提供了一种经表面处理的改性硅酸钙板的应用，在改性硅酸钙板的任一面上贴覆表材。
作为优选，表材包括：三胺浸渍纸，木皮，防火板。
作为优选，表材的贴覆方法包括高温热压，冷压。
 有益效果
1. 通过对硅酸钙板改性，提高了基材的内结合强度；
2. 通过对改性的硅酸钙板表面的涂胶处理，可使改性的硅酸钙板与其它各种表材相复合，不仅能使三胺浸渍纸与改性的硅酸钙板直接热压贴合，表结合强度达到1MPa以上，而且木皮、防火板等材料与其冷贴后，得到的产品剥离强度均符合要求，有效提高了硅酸钙板的实用性，适用范围更加广泛。
3. 贴覆表材后的终产品，降低了消费成本，环保无毒。
 本发明的实施方式
实施例1
一种改性硅酸钙板，改性方法为将硅酸钙板浸渍于固含量在95%以上的二氧化硅溶液中，完全吸透至饱和，再将浸渍后的硅酸钙板干燥处理。
分别对改性前的硅酸钙板和改性后的硅酸钙板进行内结合力检测，改性前为40kg/f，改性后为70 kg/f。
实施例2
将实施例1改性得到的硅酸钙板进行表面处理：即在改性完成的硅酸钙板的任一面上进行施胶硬化：
（1）第一道施胶：一次涂胶、一次流平渗透、一次烘干、一次冷却、一次抛光，第一道施胶中一次涂胶的上胶量为：当改性完成的硅酸钙板密度在910kg/m³，上胶量120g/m 2，一次涂胶采用水性双组份环氧胶，一次烘干以10m/min的速度进烘道，烘道设置温度150℃，烘道长度为10m。
（2）在第一道施胶后的表面上进行第二道施胶：二次涂胶、二次烘干、二次抛光，二次涂胶的上胶量为40g/m 2，二次烘干以8m/min的速度进烘道，烘道设置温度150℃，烘道长度为10m，二次涂胶采用水性丙烯酸胶加固化剂异氰酸酯，水性丙烯酸胶与异氰酸酯的重量配比为3.5：1。
实施例3-7，改性得到的硅酸钙板进行表面处理的具体方式同实施例2，第一道施胶和第二道施胶的具体参数调控如表一。
表一
Figure 446418dest_path_image001
实施例8-16，在上述实施2-7表面处理后的硅酸钙板上贴覆表材，对最终成品进行剥离强度检测，具体见表二。
 
  硅酸钙板 表材 贴覆方法 剥离强度Mpa
实施例8 实施例1 三胺浸渍纸 高温热压（单面） 贴不牢
实施例9 实施例2 三胺浸渍纸 高温热压（单面） 1
实施例10 实施例3 三胺浸渍纸 高温热压（单面） 1.2
实施例11 实施例1 木皮(用Pur胶水) 冷压（双面） 0.4
实施例12 实施例4 木皮(用Pur 胶水) 冷压（双面） 1.4
实施例13 实施例5 木皮(用Pur胶水) 冷压（双面） 1.7
实施例14 实施例1 防火板(用Pur胶水) 冷压（单面） 0.5
实施例15 实施例6 防火板(用Pur胶水) 冷压（单面） 1.1
实施例16 实施例7 防火板(用Pur胶水) 冷压（单面） 1.6
 

Claims (10)

  1. 一种改性硅酸钙板，其特征在于，改性方法是将硅酸钙板浸渍于固含量在95%以上的二氧化硅溶液中，完全吸透至饱和，再将浸渍后的硅酸钙板干燥处理。
  2. 一种改性硅酸钙板的表面处理方法，其特征在于，包括在权利要求1所述的硅酸钙板的任一面上进行施胶硬化，施胶硬化包括涂胶、流平渗透、烘干、冷却、抛光。
  3. 根据权利要求2所述的改性硅酸钙板的表面处理方法，其特征在于，施胶硬化具体为：
    （1）第一道施胶：一次涂胶、一次流平渗透、一次烘干、一次冷却、一次抛光；
    （2）在第一道施胶后的表面上进行第二道施胶：二次涂胶、二次烘干、二次抛光。
  4. 根据权利要求3所述的改性硅酸钙板的表面处理方法，其特征在于，第一道施胶中一次涂胶的上胶量为：当板材密度在900~950kg/m 3，上胶量110-120g/m 2；当板材密度在950~1100kg/m 3，上胶量在90-100g/m 2；当板材密度在1100~1300kg/m 3，上胶量75-85g/m 2；一次涂胶采用水性双组份环氧胶，与基材有更好的适用性，一次烘干以10~12m/min的速度进烘道，烘道设置温度130~150℃，烘道长度为10~15m。
  5. 根据权利要求3所述的改性硅酸钙板的表面处理方法，其特征在于，二次涂胶的上胶量为40~50g/m 2。
  6. 根据权利要求3所述的改性硅酸钙板的表面处理方法，其特征在于，二次烘干以8-10m/min的速度进烘道，烘道设置温度130~150℃，烘道长度为10~15m。
  7. 根据权利要求3所述的改性硅酸钙板的表面处理方法，其特征在于，二次涂胶采用水性丙烯酸胶加固化剂异氰酸酯，水性丙烯酸胶与异氰酸酯的重量配比为3.5-10：1。
  8. 根据权利要求7所述的改性硅酸钙板的表面处理方法，其特征在于，水性丙烯酸胶与异氰酸酯的重量配比为6-7:1。
  9. 一种改性硅酸钙板复合材料，其特征在于，包括权利要求2所述的经表面处理后的改性硅酸钙板，以及在该硅酸钙板的任一面上贴覆表材。
  10. 根据权利要求9复合材料，其特征在于，表材包括三胺浸渍纸，木皮，防火板，表材的贴覆方法包括高温热压，冷压。
     
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