WO2023098591A1 - 一种高防潮性环保多元复合地板及其生产工艺 - Google Patents

一种高防潮性环保多元复合地板及其生产工艺 Download PDF

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WO2023098591A1
WO2023098591A1 PCT/CN2022/134376 CN2022134376W WO2023098591A1 WO 2023098591 A1 WO2023098591 A1 WO 2023098591A1 CN 2022134376 W CN2022134376 W CN 2022134376W WO 2023098591 A1 WO2023098591 A1 WO 2023098591A1
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layer
add
composite floor
component composite
moisture
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雷响
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安徽扬子地板股份有限公司
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/06—Polyurethanes from polyesters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/181—Insulating layers integrally formed with the flooring or the flooring elements

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  • the invention belongs to the technical field of environmental protection boards, and in particular relates to a high moisture-proof environmental protection multi-component composite floor and a production process thereof.
  • Laminate flooring is a green and environmentally friendly floor material with fashionable decoration and changeable decoration based on high-density wood fiber board. and other performance.
  • Wood materials are composed of cellulose, hemicellulose, lignin, etc., rich in hydrophilic groups such as hydroxyl groups, and have strong moisture absorption capacity, which makes the board made of wood fiber easy to absorb water and deform. Moreover, when the external environment (temperature, humidity, etc.) changes, it will cause changes in the moisture content of the wood, resulting in shrinkage and swelling of the wood, warping and deformation, etc., and it cannot be repaired after water damage, and the comfort of the feet will be reduced. Affecting the comfort and aesthetics of the floor For a long time, moisture-proof and waterproof has always been a difficult problem in the field of wood floor research and application.
  • the present invention provides a high moisture-proof environment-friendly multi-component composite floor and its production process.
  • a high moisture-proof environment-friendly multi-component composite floor comprising a substrate layer, a decorative layer and a base layer, the decorative layer is a wood paint layer, which is a waterproof wood paint coated on the surface of the base layer, the base layer and the base layer Layers are poplar veneer;
  • This wood lacquer layer comprises the following steps to make:
  • Step S1 Add 4,4'-diphenylmethane diisocyanate and dehydrated polyester diol into the reaction flask, raise the temperature to 65°C, stir at a constant speed and react for 20 minutes, then add dimethylol butyric acid and diol Dibutyltin laurate, heat up to 85°C, keep warm for 3 hours to prepare a prepolymer, then cool down to room temperature, add triethylamine to adjust the pH until the system is neutral, add deionized water and stir at high speed for 1 hour to prepare an aqueous emulsion , control the molar ratio of 4,4'-diphenylmethane diisocyanate and polyester diol to be 2:1, the amount of dimethylol butyric acid is 4,4'-diphenylmethane diisocyanate and polyester The weight sum of dihydric alcohol is 4.5-6%, and the consumption of dibutyltin dilaurate is 0.15-0.3% of 4,4'-diphen
  • step S1 4,4'-diphenylmethane diisocyanate is reacted with polyester diol, 4,4'-diphenylmethane diisocyanate is attached to both ends of polyester diol, and then dilauric acid diisocyanate is added
  • Butyl tin is used as an organic catalyst
  • dimethylol butyric acid is used as a chain extender to prepare a prepolymer
  • dimethylol butyric acid is inserted into the prepolymer as a hard segment, in order to prevent the content of dimethylol butyric acid from being too high
  • the water resistance of the prepolymer, so its content is controlled at 4.5-6%;
  • Step S2 adding the modified particles into the water-based emulsion, stirring magnetically for 5 hours, ultrasonicating for 2 hours, then coating on the surface of the substrate layer, leveling at room temperature for 3 days, and then vacuum drying at 75°C for 24 hours to form a wood paint layer.
  • the dosage of the active particles is 10-12% of the weight of the aqueous emulsion.
  • step S2 the modified particles are added, which can form strong hydrogen bonds with the prepolymer, promote the crosslinking of the coating film, and form a three-dimensional network structure, which can effectively prevent water penetration and diffusion, and the modified particles
  • the grafted hydrophobic groups further weaken the interaction with water, endow the decorative layer with excellent waterproof performance, and can add pigments to modify the color of the decorative layer.
  • modified particle comprises the following steps:
  • Step S12 adding the oxidized cellulose nanocrystals to N,N-dimethylformamide, blowing nitrogen gas and adding dodecyl alcohol, adding dibutyltin dilaurate, raising the temperature to 65°C, stirring at a constant speed and reacting 24h, wash after reaction finishes, centrifuge, make modified particle after vacuum drying, the weight ratio of the cellulose nanocrystal and lauryl alcohol after control treatment is 1: 2-3, the consumption of dibutyltin dilaurate is 0.3-0.5% of the weight of the treated cellulose nanocrystals.
  • step S11 after the cellulose nanocrystals are dispersed, the treatment liquid is used for modification treatment.
  • the treatment liquid is oxidized, the hydroxyl groups on the surface of the cellulose nanocrystals are oxidized into carboxyl groups, and then reacted with the added dodecyl alcohol to prepare the modified
  • the particles are cellulose nanocrystals grafted with dodecyl alcohol, and the hydrophobicity of the surface of the modified particles is improved by inserting long-chain alkyl groups.
  • the treatment liquid is prepared by mixing tetramethylpiperidinium oxide, sodium bromide and deionized water according to the dosage ratio of 30.2mg: 300-330mg: 10mL.
  • a production process of high moisture-proof environmental protection multi-component composite floor comprising the following steps:
  • the multi-component composite floor of the present invention includes a base material layer, a decorative layer and a bottom plate layer.
  • the decorative layer is a wood paint layer formed by waterproof wood paint.
  • modified particles are added to form a strong hydrogen bond with the prepolymer , to promote the cross-linking of the coating film and form a three-dimensional network structure, which can effectively prevent water penetration and diffusion, and the hydrophobic groups grafted on the modified particles further weaken the force with water, endowing the decorative layer with excellent waterproof performance.
  • pigments can be added to modify the color of the decorative layer, and the wood paint will not release formaldehyde, which meets environmental protection requirements.
  • the notch formed by the substrate layer and the bottom layer is sealed with wax to form a denser waterproof layer at the notch.
  • the oil film further improves the waterproof performance of the notch.
  • Fig. 1 is a comparison table of the moisture-proof floors prepared according to the standards of GB/T11718-2009 in Example 1-3 and Comparative Example 1-2 of the present invention.
  • a high moisture-proof environment-friendly multi-component composite floor comprising a substrate layer, a decorative layer and a base layer, the decorative layer is a wood paint layer, which is a waterproof wood paint coated on the surface of the base layer, the base layer and the base layer Layers are poplar veneer;
  • This wood lacquer layer comprises the following steps to make:
  • modified particles into the water-based emulsion, stir them magnetically for 5 hours and then ultrasonically for 2 hours, then coat them on the surface of the substrate layer, level them at room temperature for 3 days, and then dry them under vacuum at 75°C for 24 hours to form a wood paint layer.
  • the dosage is 10% of the weight of the aqueous emulsion.
  • a high moisture-proof environment-friendly multi-component composite floor comprising a substrate layer, a decorative layer and a base layer, the decorative layer is a wood paint layer, which is a waterproof wood paint coated on the surface of the base layer, the base layer and the base layer Layers are poplar veneer;
  • This wood lacquer layer comprises the following steps to make:
  • modified particles into the water-based emulsion, stir them magnetically for 5 hours and then ultrasonically for 2 hours, then coat them on the surface of the substrate layer, level them at room temperature for 3 days, and then dry them under vacuum at 75°C for 24 hours to form a wood paint layer.
  • the dosage is 11% of the weight of the aqueous emulsion.
  • a high moisture-proof environment-friendly multi-component composite floor comprising a substrate layer, a decorative layer and a base layer, the decorative layer is a wood paint layer, which is a waterproof wood paint coated on the surface of the base layer, the base layer and the base layer Layers are poplar veneer;
  • This wood lacquer layer comprises the following steps to make:
  • modified particles into the water-based emulsion, stir them magnetically for 5 hours and then ultrasonically for 2 hours, then coat them on the surface of the substrate layer, level them at room temperature for 3 days, and then dry them under vacuum at 75°C for 24 hours to form a wood paint layer.
  • the dosage is 12% of the weight of the aqueous emulsion.
  • this comparative example does not add modified particles.
  • This comparative example is a commercially available high moisture-proof floor produced by a certain company.
  • Example 1-3 The moisture-proof floor prepared in Example 1-3 and Comparative Example 1-2 was tested according to the standard of GB/T11718-2009, and the results are shown in the table of attached drawing 1.
  • the multi-component composite floor of the present invention includes a base material layer, a decorative layer and a bottom plate layer.
  • the decorative layer is a wood paint layer formed by waterproof wood paint.
  • modified particles are added to form a strong hydrogen bond with the prepolymer , to promote the cross-linking of the coating film and form a three-dimensional network structure, which can effectively prevent water penetration and diffusion, and the hydrophobic groups grafted on the modified particles further weaken the force with water, endowing the decorative layer with excellent waterproof performance.
  • pigments can be added to modify the color of the decorative layer, and the wood paint will not release formaldehyde, which meets environmental protection requirements.
  • the notch formed by the substrate layer and the bottom layer is sealed with wax to form a denser waterproof layer at the notch.
  • the oil film further improves the waterproof performance of the notch.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Floor Finish (AREA)

Abstract

本发明涉及环保板材技术领域，具体的，提供一种高防潮性环保多元复合地板及其生产工艺，该复合地板包括基材层、装饰层和底板层，装饰层为木漆层，为涂覆在基材层表面的防水木漆，底板层和基材层均为杨木单板；在基材层一侧表面涂覆防水木漆，形成装饰层，之后在基材层另一侧表面采用环保级MDI胶胶合底板层，之后在基材层和底板层形成的槽口进行涂蜡密封，制备出防潮性环保多元复合地板；最后在基材层和底板层形成的槽口进行涂蜡密封，在槽口形成更密致的防水油膜。

Description

一种高防潮性环保多元复合地板及其生产工艺 技术领域
本发明属于环保板材技术领域，具体地，涉及一种高防潮性环保多元复合地板及其生产工艺。
背景技术
强化地板是以高密度木质纤维板为基材的绿色环保、装饰时尚多变的地面材料，具有木质板材温润舒适的特性及触感，并拥有优异的耐磨、耐灼、防滑、抗污、抗冲击等性能。
木质材料由纤维素、半纤维素、木质素等组成，富含羟基等亲水性基团，具有极强的吸湿吸潮能力，这使得以木质纤维为原料制造的板材易吸水变形。而且，当外界环境(温度、湿度等)发生变化时，会引起木材含水率的变化，造成木材干缩湿胀，翘曲变形等，且经水损坏过后不可修复，脚感舒适度降低，严重影响地板的舒适性和美观效果长期以来，防潮防水始终是木质地板研究及应用领域极力攻克的难题。
技术问题
为了解决上述技术问题，本发明提供一种高防潮性环保多元复合地板及其生产工艺。
技术解决方案
本发明的目的可以通过以下技术方案实现：
一种高防潮性环保多元复合地板，包括基材层、装饰层和底板层，所述装饰层为木漆层，为涂覆在基材层表面的防水木漆，所述底板层和基材层均为杨木单板；
该木漆层包括如下步骤制成：
步骤S1、将4，4’-二苯基甲烷二异氰酸酯和脱水后的聚酯二元醇加入反应瓶中，升温至65℃，匀速搅拌并反应20min，之后加入二羟甲基丁酸和二月桂酸二丁基锡，升温至85℃，保温反应3h，制得预聚体，之后降温至室温，加入三乙胺调节pH，直至体系为中性，加入去离子水高速搅拌1h，制得水性乳液，控制4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的摩尔比为2∶1，二羟甲基丁酸的用量为4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的重量和为4.5-6％，二月桂酸二丁基锡的用量为4，4’-二苯基甲烷二异氰酸酯重量的0.15-0.3％；
步骤S1中4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇反应，4，4’-二苯基甲烷二异氰酸酯接在聚酯二元醇的两端，之后加入二月桂酸二丁基锡作为有机催化剂，二羟甲基丁酸作为扩链剂，制备出预聚体，二羟甲基丁酸作为硬段接入预聚体中，为了防止二羟甲基丁酸含量过高降低预聚体的耐水性，所以控制其含量为4.5-6％；
步骤S2、将改性粒子加入水性乳液中，磁力搅拌5h后超声2h，之后涂覆在基材层表面，在室温下流平3天，之后在75℃下真空干燥24h，形成木漆层，改性粒子的用量为水性乳液重量的10-12％。
步骤S2中加入改性粒子，其与预聚体之间能够形成强烈的氢键作用，促进涂膜的交联，形成三维网状结构，能够有效的阻止水分渗透和扩散，而且改性粒子上接枝的疏水基团进一步减弱与水的作用力，赋予装饰层优异的防水性能，而且可以添加颜料改性装饰层颜色。
进一步地：所述改性粒子包括如下步骤制成：
步骤S11、将纤维素纳米晶分散在去离子水中，制成悬浮液，之后加入处理液，高速搅拌并滴加质量分数10％氢氧化钠溶液调节pH，直至pH＝10，之后缓慢滴加质量分数15％次氯酸钠水溶液调节pH，直至pH＝6.5-7，之后 加入乙醇终止反应，反应结束后洗涤、离心，制得氧化后的纤维素纳米晶，控制纤维素纳米晶和处理液的用量比为10g∶40-50mL；
步骤S12、将氧化后的纤维素纳米晶加入N,N-二甲基甲酰胺中，通入氮气并加入十二烷基醇，加入二月桂酸二丁基锡，升温至65℃，匀速搅拌并反应24h，反应结束后洗涤、离心，真空干燥后制得改性粒子，控制处理后的纤维素纳米晶和十二烷基醇的重量比为1∶2-3，二月桂酸二丁基锡的用量为处理后的纤维素纳米晶重量的0.3-0.5％。
步骤S11中纤维素纳米晶分散后通过处理液进行改性处理，经过处理液氧化之后，将纤维素纳米晶表面的羟基氧化成羧基，之后与加入的十二烷基醇反应，制备出改性粒子，其为接枝有十二烷基醇的纤维素纳米晶，通过接入长链烷基，提高改性粒子表面的疏水性。
进一步地：所述处理液为四甲基哌啶氧化物、溴化钠和去离子水按照30.2mg∶300-330mg∶10mL的用量比混合而成。
一种高防潮性环保多元复合地板的生产工艺，包括如下步骤：
在基材层一侧表面涂覆防水木漆，形成装饰层，之后在基材层另一侧表面采用环保级MDI胶胶合底板层，之后在基材层和底板层形成的槽口进行涂蜡密封，制备出防潮性环保多元复合地板。
有益效果
本发明多元复合地板包括基材层、装饰层和底板层，装饰层为防水木漆形成的木漆层，制备过程中加入改性粒子，其与预聚体之间能够形成强烈的氢键作用，促进涂膜的交联，形成三维网状结构，能够有效的阻止水分渗透和扩散，而且改性粒子上接枝的疏水基团进一步减弱与水的作用力，赋予装饰层优异的防水性能，而且可以添加颜料改性装饰层颜色，而且该木漆不会释放出甲醛，符合环保要求，最后在基材层和底板层形成的槽口进行涂蜡密 封，在槽口形成更密致的防水油膜，进一步提升槽口的防水性能。
附图说明
图1是本发明高防潮性高防潮性环保多元复合地板实施例1-3和对比例1-2制备出防潮地板按照GB/T11718-2009的标准进行检测对比表。
本发明的实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
实施例1
一种高防潮性环保多元复合地板，包括基材层、装饰层和底板层，所述装饰层为木漆层，为涂覆在基材层表面的防水木漆，所述底板层和基材层均为杨木单板；
在基材层一侧表面涂覆防水木漆，形成装饰层，之后在基材层另一侧表面采用环保级MDI胶胶合底板层，之后在基材层和底板层形成的槽口进行涂蜡密封，制备出防潮性环保多元复合地板。
该木漆层包括如下步骤制成：
将4，4’-二苯基甲烷二异氰酸酯和脱水后的聚酯二元醇加入反应瓶中，升温至65℃，匀速搅拌并反应20min，之后加入二羟甲基丁酸和二月桂酸二丁基锡，升温至85℃，保温反应3h，制得预聚体，之后降温至室温，加入三乙胺调节pH，直至体系为中性，加入去离子水高速搅拌1h，制得水性乳液，控制4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的摩尔比为2∶1，二羟甲基丁酸的用量为4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的重量和为4.5％，二月桂酸二丁基锡的用量为4，4’-二苯基甲烷二异氰酸酯重量的 0.15％；
将纤维素纳米晶分散在去离子水中，制成悬浮液，之后加入处理液，高速搅拌并滴加质量分数10％氢氧化钠溶液调节pH，直至pH＝10，之后缓慢滴加质量分数15％次氯酸钠水溶液调节pH，直至pH＝6.5-7，之后加入乙醇终止反应，反应结束后洗涤、离心，制得氧化后的纤维素纳米晶，控制纤维素纳米晶和处理液的用量比为10g∶40mL；
将氧化后的纤维素纳米晶加入N,N-二甲基甲酰胺中，通入氮气并加入十二烷基醇，加入二月桂酸二丁基锡，升温至65℃，匀速搅拌并反应24h，反应结束后洗涤、离心，真空干燥后制得改性粒子，控制处理后的纤维素纳米晶和十二烷基醇的重量比为1∶2，二月桂酸二丁基锡的用量为处理后的纤维素纳米晶重量的0.3％。
将改性粒子加入水性乳液中，磁力搅拌5h后超声2h，之后涂覆在基材层表面，在室温下流平3天，之后在75℃下真空干燥24h，形成木漆层，改性粒子的用量为水性乳液重量的10％。
实施例2
一种高防潮性环保多元复合地板，包括基材层、装饰层和底板层，所述装饰层为木漆层，为涂覆在基材层表面的防水木漆，所述底板层和基材层均为杨木单板；
在基材层一侧表面涂覆防水木漆，形成装饰层，之后在基材层另一侧表面采用环保级MDI胶胶合底板层，之后在基材层和底板层形成的槽口进行涂蜡密封，制备出防潮性环保多元复合地板。
该木漆层包括如下步骤制成：
将4，4’-二苯基甲烷二异氰酸酯和脱水后的聚酯二元醇加入反应瓶中，升温至65℃，匀速搅拌并反应20min，之后加入二羟甲基丁酸和二月桂酸二 丁基锡，升温至85℃，保温反应3h，制得预聚体，之后降温至室温，加入三乙胺调节pH，直至体系为中性，加入去离子水高速搅拌1h，制得水性乳液，控制4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的摩尔比为2∶1，二羟甲基丁酸的用量为4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的重量和为5％，二月桂酸二丁基锡的用量为4，4’-二苯基甲烷二异氰酸酯重量的0.2％；
将纤维素纳米晶分散在去离子水中，制成悬浮液，之后加入处理液，高速搅拌并滴加质量分数10％氢氧化钠溶液调节pH，直至pH＝10，之后缓慢滴加质量分数15％次氯酸钠水溶液调节pH，直至pH＝6.5-7，之后加入乙醇终止反应，反应结束后洗涤、离心，制得氧化后的纤维素纳米晶，控制纤维素纳米晶和处理液的用量比为10g∶45mL；
将氧化后的纤维素纳米晶加入N,N-二甲基甲酰胺中，通入氮气并加入十二烷基醇，加入二月桂酸二丁基锡，升温至65℃，匀速搅拌并反应24h，反应结束后洗涤、离心，真空干燥后制得改性粒子，控制处理后的纤维素纳米晶和十二烷基醇的重量比为1∶2.5，二月桂酸二丁基锡的用量为处理后的纤维素纳米晶重量的0.4％。
将改性粒子加入水性乳液中，磁力搅拌5h后超声2h，之后涂覆在基材层表面，在室温下流平3天，之后在75℃下真空干燥24h，形成木漆层，改性粒子的用量为水性乳液重量的11％。
实施例3
一种高防潮性环保多元复合地板，包括基材层、装饰层和底板层，所述装饰层为木漆层，为涂覆在基材层表面的防水木漆，所述底板层和基材层均为杨木单板；
在基材层一侧表面涂覆防水木漆，形成装饰层，之后在基材层另一侧表面采用环保级MDI胶胶合底板层，之后在基材层和底板层形成的槽口进行涂 蜡密封，制备出防潮性环保多元复合地板。
该木漆层包括如下步骤制成：
将4，4’-二苯基甲烷二异氰酸酯和脱水后的聚酯二元醇加入反应瓶中，升温至65℃，匀速搅拌并反应20min，之后加入二羟甲基丁酸和二月桂酸二丁基锡，升温至85℃，保温反应3h，制得预聚体，之后降温至室温，加入三乙胺调节pH，直至体系为中性，加入去离子水高速搅拌1h，制得水性乳液，控制4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的摩尔比为2∶1，二羟甲基丁酸的用量为4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的重量和为6％，二月桂酸二丁基锡的用量为4，4’-二苯基甲烷二异氰酸酯重量的0.3％；
将纤维素纳米晶分散在去离子水中，制成悬浮液，之后加入处理液，高速搅拌并滴加质量分数10％氢氧化钠溶液调节pH，直至pH＝10，之后缓慢滴加质量分数15％次氯酸钠水溶液调节pH，直至pH＝6.5-7，之后加入乙醇终止反应，反应结束后洗涤、离心，制得氧化后的纤维素纳米晶，控制纤维素纳米晶和处理液的用量比为10g∶50mL；
将氧化后的纤维素纳米晶加入N,N-二甲基甲酰胺中，通入氮气并加入十二烷基醇，加入二月桂酸二丁基锡，升温至65℃，匀速搅拌并反应24h，反应结束后洗涤、离心，真空干燥后制得改性粒子，控制处理后的纤维素纳米晶和十二烷基醇的重量比为1∶3，二月桂酸二丁基锡的用量为处理后的纤维素纳米晶重量的0.5％。
将改性粒子加入水性乳液中，磁力搅拌5h后超声2h，之后涂覆在基材层表面，在室温下流平3天，之后在75℃下真空干燥24h，形成木漆层，改性粒子的用量为水性乳液重量的12％。
对比例1
本对比例与实施例1相比，未加入改性粒子。
对比例2
本对比例为市售某公司生产的高防潮性地板。
对实施例1-3和对比例1-2制备出防潮地板按照GB/T11718-2009的标准进行检测，结果如附图1的表格所示。
从附图1的表中能够看出实施例1-3具有优异的防潮性能。
在说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上内容仅仅是对本发明所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离发明或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。
工业实用性
本发明多元复合地板包括基材层、装饰层和底板层，装饰层为防水木漆形成的木漆层，制备过程中加入改性粒子，其与预聚体之间能够形成强烈的氢键作用，促进涂膜的交联，形成三维网状结构，能够有效的阻止水分渗透和扩散，而且改性粒子上接枝的疏水基团进一步减弱与水的作用力，赋予装饰层优异的防水性能，而且可以添加颜料改性装饰层颜色，而且该木漆不会释放出甲醛，符合环保要求，最后在基材层和底板层形成的槽口进行涂蜡密封，在槽口形成更密致的防水油膜，进一步提升槽口的防水性能。

Claims (5)

  1. 一种高防潮性环保多元复合地板，其特征在于：包括基材层、装饰层和底板层，所述装饰层为涂覆在基材层表面的防水木漆形成的木漆层，所述底板层和基材层均为杨木单板；
    该木漆层包括如下步骤制成：
    步骤S1、将4，4’-二苯基甲烷二异氰酸酯和脱水后的聚酯二元醇加入反应瓶中，升温至65℃，匀速搅拌并反应20min，之后加入二羟甲基丁酸和二月桂酸二丁基锡，升温至85℃，保温反应3h，制得预聚体，之后降温至室温，加入三乙胺调节pH，直至体系为中性，加入去离子水高速搅拌1h，制得水性乳液；
    步骤S2、将改性粒子加入水性乳液中，磁力搅拌5h后超声2h，之后涂覆在基材层表面，在室温下流平3天，之后在75℃下真空干燥24h，形成木漆层，改性粒子的用量为水性乳液重量的10-12％；
    其中，所述改性粒子包括如下步骤制成：
    步骤S11、将纤维素纳米晶分散在去离子水中，制成悬浮液，之后加入处理液，高速搅拌并滴加质量分数10％氢氧化钠溶液调节pH，直至pH＝10，之后缓慢滴加质量分数15％次氯酸钠水溶液调节pH，直至pH＝6.5-7，之后加入乙醇终止反应，反应结束后洗涤、离心，制得氧化后的纤维素纳米晶；
    步骤S12、将氧化后的纤维素纳米晶加入N,N-二甲基甲酰胺中，通入氮气并加入十二烷基醇，加入二月桂酸二丁基锡，升温至65℃，匀速搅拌并反应24h，反应结束后洗涤、离心，真空干燥后制得改性粒子。
  2. 根据权利要求1所述的一种高防潮性环保多元复合地板，其特征在于：步骤S1中控制4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的摩尔比为2∶1，二羟甲基丁酸的用量为4，4’-二苯基甲烷二异氰酸酯和聚酯二元醇的重量和为4.5-6％，二月桂酸二丁基锡的用量为4，4’-二苯基甲烷二异氰酸酯重量的 0.15-0.3％。
  3. 根据权利要求1所述的一种高防潮性环保多元复合地板，其特征在于：所述处理液为四甲基哌啶氧化物、溴化钠和去离子水按照30.2mg∶300-330mg∶10mL的用量比混合而成。
  4. 根据权利要求1所述的一种高防潮性环保多元复合地板，其特征在于：步骤S11中控制纤维素纳米晶和处理液的用量比为10g∶40-50mL，步骤S12中控制处理后的纤维素纳米晶和十二烷基醇的重量比为1∶2-3，二月桂酸二丁基锡的用量为处理后的纤维素纳米晶重量的0.3-0.5％。
  5. 根据权利要求1所述的一种高防潮性环保多元复合地板的生产工艺，其特征在于：包括如下步骤：
    在基材层一侧表面涂覆防水木漆，形成装饰层，之后在基材层另一侧表面采用环保级MDI胶胶合底板层，之后在基材层和底板层形成的槽口进行涂蜡密封，制备出防潮性环保多元复合地板。
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