CN114059737B - 仿幕墙保温装饰外墙板施工工艺 - Google Patents
仿幕墙保温装饰外墙板施工工艺 Download PDFInfo
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- CN114059737B CN114059737B CN202111362834.3A CN202111362834A CN114059737B CN 114059737 B CN114059737 B CN 114059737B CN 202111362834 A CN202111362834 A CN 202111362834A CN 114059737 B CN114059737 B CN 114059737B
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- heat
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Classifications
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- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
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- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/46—Rock wool ; Ceramic or silicate fibres
- C04B14/4618—Oxides
- C04B14/4631—Silica
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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
- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/02—Polycondensates containing more than one epoxy group per molecule
- C08G59/04—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof
- C08G59/06—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
- C08G59/063—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols with epihalohydrins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/16—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of fibres or chips, e.g. bonded with synthetic resins, or with an outer layer of fibres or chips
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
本发明提供一种仿幕墙保温装饰外墙板施工工艺,属于土木建筑工程领域,所述施工工艺依次包括以下步骤:基层处理、找平、基层弹线、湿润、粘贴保温装饰外墙板、打胶勾缝和墙面清理,所述保温装饰外墙板由保温板和仿幕墙修饰面组成,保温板和仿幕墙修饰面间通过防水胶黏剂粘合。本发明通过将保温材料与仿幕墙装饰材料复合成兼具保温与仿幕墙装饰双重功能的保温装饰外墙板,使保温效果和耐久性更好,与基层连接更加牢固,简化了施工工艺,减少现场作业量,缩短工期。
Description
技术领域
本发明涉及土木建筑工程领域,具体涉及一种仿幕墙保温装饰外墙板施工工艺。
背景技术
在现有的相关工艺和技术中,建筑外墙保温工程与幕墙装饰工程作为两个独立分项工程都是各自组织施工。随着国家对建筑保温功能要求的逐步提高,大部分建筑都采取了墙体保温措施,现行保温技术以后贴聚苯板薄抹灰系统、大模内置聚苯板薄抹灰系统、大模内置舒乐舍板抹灰系统、聚苯颗粒保温浆料系统为主,存在着与基层连接不牢、面层易开裂、耐久性差和现场作业量大、施工工艺复杂等缺点,而传统的金属铝板幕墙、玻璃幕墙、石材幕墙虽然装饰效果好,但施工工艺复杂且造价极其昂贵。同时,现有的保温装饰外墙板还存在重量大、耐久/水性差的问题。
发明内容
针对上述问题,本发明提供一种仿幕墙保温装饰外墙板施工工艺。
本发明的目的采用以下技术方案来实现:
一种仿幕墙保温装饰外墙板施工工艺,包括以下步骤:
(1)基层处理、找平:对建筑物的基层墙体进行表面处理,去除表面的凸出、松动、风化及表面污染物,使得墙体表面清洁平整,使用专用的找平材料进行墙体找平,使基层墙体的平整度达到施工规范要求;
(2)粘贴前处理:在找平后的基层墙体上按设计分格要求弹线,确定每块保温装饰外墙板的粘贴位置,在粘贴前将基层墙体用水适当湿润;
(3)粘贴:在保温装饰外墙板的背面涂布专用聚合物砂浆,并使之充满于梯形槽内,然后将保温装饰外墙板按设计位置粘贴于基层墙体上,并保证其粘贴平整度;
(4)打胶勾缝:按设计要求用专用密封胶对板缝进行处理,形成分格效果;
(5)墙面清理:揭去粘贴完毕的保温装饰外墙板板面保护膜,进行清理;
其中,所述保温装饰外墙板由保温板和仿幕墙修饰面组成,保温板和仿幕墙修饰面间通过防水胶黏剂粘合。
优选的,所述保温板的制备方法包括以下步骤:
S1、称取聚乙烯吡咯烷酮并溶解在去离子水中,搅拌升温至沸,充分溶解后撤去热源,在搅拌条件下加入磷酸调节pH值至2-3,加入正硅酸乙酯,在室温条件下搅拌反应1-2h至透明,得到纺丝液,以静电纺丝法制备为纺丝纤维,将所述纺丝纤维转入高温炉进行煅烧处理,制得纳米二氧化硅纤维,将所述纳米二氧化硅纤维分散在聚丙烯酰胺的水溶液中,得到分散溶液;
其中,所述聚乙烯吡咯烷酮与所述去离子水、所述正硅酸乙酯的质量比例为(1-1.1):10:(3.5-3.8);所述纳米二氧化硅纤维与所述聚丙烯酰胺、水的质量比例为(0.42-0.45):(0.01-0.02):100;
S2、分别称取氯化铝和硼酸并溶解在去离子水中,充分搅拌混合后加入正硅酸乙酯,搅拌反应2-4h,得到溶胶溶液,将所述溶胶溶液加入到所述分散溶液中,充分搅拌混合后得到混合溶液,将所述混合溶液倒入模具中,待静置脱气后,得到凝胶,冻融循环2-3次,冷冻干燥脱水,脱模后转入高温炉中进行热处理,热处理温度900-1000℃,热处理时间10-60min,冷却后得到所述保温板;
其中,所述氯化铝与所述硼酸、去离子水、正硅酸乙酯的质量比例为1.95:0.45:100:(7.5-7.8)。
优选的,所述纺丝纤维煅烧处理的温度在1000-1300℃,煅烧时间在0.5-2h。
优选的,所述保温板的制备方法还包括以下步骤:
S3、将氨硼烷分散溶解在二甲氧基四乙二醇中,在5-10kPa的氩气保护气氛下,将氨硼烷的二甲氧基四乙二醇溶液加热至100-120℃并保温1h,得到混合气氛,将步骤S2制得的保温板置于所述混合气氛中并封闭进行气氛扩散处理,扩散完成后将保温板进行二次热处理,待冷却至室温后制得。
优选的,所述防水胶黏剂为改性环氧树脂胶黏剂,所述改性环氧树脂胶黏剂由A、B两组分组成,其中,所述A组分包括木质素改性环氧树脂聚合单体、双酚A型环氧树脂、甲基-5-降冰片烯-2,3-二羧酸酐、气相白炭黑、纳米碳酸钙,所述气相白炭黑和纳米碳酸钙经过表面聚二甲基硅氧烷改性处理,所述B组分为固化剂。
优选的,所述木质素改性环氧树脂聚合单体的制备方法包括以下步骤:
A1、称取木质素磺酸盐并溶解在去离子水中,充分混合均匀后加入4-甲基愈创木酚和市售37%的甲醛溶液,充分混合均匀,得到溶液A,在保护气氛下,将所述溶液A加热升温至沸,保温回流3-5h,反应完成后冷却至室温,离心分离上清液,以石油醚和乙酸乙酯的混合溶剂为流动相,经硅胶柱色谱纯化去除未反应原料,再蒸除溶剂后制得酚化的木质素基产物;
其中,所述木质素磺酸盐与所述去离子水、所述4-甲基愈创木酚和所述甲醛的摩尔比例为20:(100-200):2:1;
A2、称取所述酚化的木质素基产物并分散在环氧氯丙烷中,加入苄基三乙基氯化铵做催化剂,混合后在80-100℃下保温搅拌反应1-2h,反应完成后冷却至室温,再依次加入与前次等量的苄基三乙基氯化铵和氢氧化钠溶液,混合后继续在室温条件下搅拌反应0.5-1h,加入乙酸乙酯洗涤并分离有机相,以无水硫酸盐干燥后,蒸除溶剂以及过量的环氧氯丙烷,以石油醚和乙酸乙酯的混合溶剂为流动相,经硅胶柱色谱纯化去除未反应原料,再次蒸除溶剂后制得碳酸酯化产物,即为所述木质素改性环氧树脂聚合单体;
其中,所述酚化的木质素基产物与所述环氧氯丙烷、所述苄基三乙基氯化铵、所述氢氧化钠的质量比例为(1.2-1.3):4:(0.09-0.1):(0.65-0.7)。
优选的,按重量份数计,所述木质素改性环氧树脂聚合单体、双酚A型环氧树脂、甲基-5-降冰片烯-2,3-二羧酸酐、气相白炭黑、纳米碳酸钙重量份数依次为18-22份、25-30份、25-30份、0.1-1.5份、6-10份。
优选的,所述固化剂中还包括有固化促进剂,所述固化促进剂包括三乙醇胺和2,4,6-三(二甲氨基甲基)-苯酚。
本发明的有益效果为:
(1)本发明通过将保温材料与仿幕墙装饰材料复合成兼具保温与仿幕墙装饰双重功能的保温装饰外墙板,使保温效果和耐久性更好,与基层连接更加牢固,简化了施工工艺,减少现场作业量,缩短工期。同时,复合板材也对自重、粘结性能、耐水性能、保温性能和耐火阻燃性能等提出了更高的要求,气凝胶具有低的自重和热导率,是良好的保温隔热材料,但存在质脆以及晶化诱导的破碎,容易导致严重的强度退化或塌陷,稳定性不高,本发明通过静电纺丝法结合高温热处理方法制备了纳米二氧化硅纤维,并将其掺加在硼铝硅酸盐溶胶基质中进行共成型,制备得到具有高韧性和热稳定性的改性硼铝硅酸盐气凝胶;进一步地,基于气凝胶的多孔结构,本发明通过气相渗透扩散法,对所述硼铝硅酸盐气凝胶进行修饰,具体是,氨硼烷的二甲氧基四乙二醇溶液在热条件下分解为硼嗪,硼嗪均匀扩散在气凝胶内部缩合为硼烯,再通过高温热处理在孔壁形成氮化硼涂层,减少由韧性引致的锚固强度降低;再进一步地,本发明以乙烯或乙炔为热沉积气氛,在所述气凝胶的内部沉积形成碳层,增强气凝胶的内部疏水性,降低其吸水率,使得保温材料兼具透气、抗渗、轻质、防水、耐火、阻燃的特性。
(2)本发明通过聚二碳酸酯结构在环氧树脂交联体系中引入木质素结构,提高了胶黏剂在常温及低温下的固化速度,有利于提高施工效率;同时固化后还具有粘接强度高、柔韧性好、耐湿热和耐候性理想的特性,更进一步的,本发明以改性聚合单体、常规缩水甘油醚以及甲基-5-降冰片烯-2,3-二羧酸酐为聚合单体,在固化促进剂下形成环氧树脂交联网络,其中,三乙醇胺的羟基和叔氨基团可促进缩水甘油醚环氧-环酸酐固化过程,进一步提高固化速率和固化强度;另一方面,通过PDMS改性纳米填料使胶黏层同时具有良好的耐水性能,减少外墙多孔材料对水分的吸附。
具体实施方式
结合以下实施例对本发明作进一步描述。
实施例1
一种仿幕墙保温装饰外墙板施工工艺,包括以下步骤:
(1)基层处理、找平:对建筑物的基层墙体进行表面处理,去除表面的凸出、松动、风化及表面污染物,使得墙体表面清洁平整,使用专用的找平材料进行墙体找平,使基层墙体的平整度达到施工规范要求;
(2)粘贴前处理:在找平后的基层墙体上按设计分格要求弹线,确定每块保温装饰外墙板的粘贴位置,在粘贴前将基层墙体用水适当湿润;
(3)粘贴:在保温装饰外墙板的背面涂布专用聚合物砂浆,并使之充满于梯形槽内,然后将保温装饰外墙板按设计位置粘贴于基层墙体上,并保证其粘贴平整度;
(4)打胶勾缝:按设计要求用专用密封胶对板缝进行处理,形成分格效果;
(5)墙面清理:揭去粘贴完毕的保温装饰外墙板板面保护膜,进行清理;
其中,所述保温装饰外墙板由保温板和仿幕墙修饰面组成,保温板和仿幕墙修饰面间通过防水胶黏剂粘合;
所述保温板的制备方法包括以下步骤:
S1、称取聚乙烯吡咯烷酮并溶解在去离子水中,搅拌升温至沸,充分溶解后撤去热源,在搅拌条件下加入磷酸调节pH值至2-3,加入正硅酸乙酯,在室温条件下搅拌反应1-2h至透明,得到纺丝液,以静电纺丝法制备为纺丝纤维,将所述纺丝纤维转入高温炉进行煅烧处理,制得纳米二氧化硅纤维,将所述纳米二氧化硅纤维分散在聚丙烯酰胺的水溶液中,得到分散溶液;
其中,所述聚乙烯吡咯烷酮与所述去离子水、所述正硅酸乙酯的质量比例为1.1:10:3.8;所述纳米二氧化硅纤维与所述聚丙烯酰胺、水的质量比例为0.45:0.01:100;所述纺丝纤维煅烧处理的温度在1200℃,煅烧时间1h;
S2、分别称取氯化铝和硼酸并溶解在去离子水中,充分搅拌混合后加入正硅酸乙酯,搅拌反应2-4h,得到溶胶溶液,将所述溶胶溶液加入到所述分散溶液中,充分搅拌混合后得到混合溶液,将所述混合溶液倒入模具中,待静置脱气后,得到凝胶,冻融循环2-3次,冷冻干燥脱水,脱模后转入高温炉中进行热处理,热处理温度900-1000℃,热处理时间10-60min,冷却后得到所述保温板;
其中,所述氯化铝与所述硼酸、去离子水、正硅酸乙酯的质量比例为1.95:0.45:100:(7.5-7.8);
所述防水胶黏剂为改性环氧树脂胶黏剂,所述改性环氧树脂胶黏剂由A、B两组分组成,其中,所述A组分包括木质素改性环氧树脂聚合单体20份、双酚A型环氧树脂26份、气相白炭黑0.5份、纳米碳酸钙8份,所述气相白炭黑和纳米碳酸钙经过表面聚二甲基硅氧烷改性处理,所述B组分为D230固化剂;
所述木质素改性环氧树脂聚合单体的制备方法包括以下步骤:
A1、称取木质素磺酸盐并溶解在去离子水中,充分混合均匀后加入4-甲基愈创木酚和市售37%的甲醛溶液,充分混合均匀,得到溶液A,在保护气氛下,将所述溶液A加热升温至沸,保温回流3-5h,反应完成后冷却至室温,离心分离上清液,以石油醚和乙酸乙酯的混合溶剂为流动相,经硅胶柱色谱纯化去除未反应原料,再蒸除溶剂后制得酚化的木质素基产物;
其中,所述木质素磺酸盐与所述去离子水、所述4-甲基愈创木酚和所述甲醛的摩尔比例为20:100:2:1;
A2、称取所述酚化的木质素基产物并分散在环氧氯丙烷中,加入苄基三乙基氯化铵做催化剂,混合后在80-100℃下保温搅拌反应1-2h,反应完成后冷却至室温,再依次加入与前次等量的苄基三乙基氯化铵和氢氧化钠溶液,混合后继续在室温条件下搅拌反应0.5-1h,加入乙酸乙酯洗涤并分离有机相,以无水硫酸盐干燥后,蒸除溶剂以及过量的环氧氯丙烷,以石油醚和乙酸乙酯的混合溶剂为流动相,经硅胶柱色谱纯化去除未反应原料,再次蒸除溶剂后制得碳酸酯化产物,即为所述木质素改性环氧树脂聚合单体;
其中,所述酚化的木质素基产物与所述环氧氯丙烷、所述苄基三乙基氯化铵、所述氢氧化钠的质量比例为1.2:4:0.09:0.67。
实施例2
一种仿幕墙保温装饰外墙板施工工艺,同实施例1,区别在于,所述保温板的制备方法还包括以下步骤:
S3、将氨硼烷分散溶解在二甲氧基四乙二醇中,在5-10kPa的氩气保护气氛下,将氨硼烷的二甲氧基四乙二醇溶液加热至100-120℃并保温1h,得到混合气氛,将步骤S2制得的外保温层材料置于所述混合气氛中并封闭进行气氛扩散处理,扩散完成后将外保温层材料进行二次热处理,待冷却至室温后制得;
所述二次热处理条件为:保护气氛下加热至100℃,保温1h,升温至600℃,保温0.5h,升温至1400℃,保温1h,待温度降至900-1000℃时,将保护气氛切换为乙烯或乙炔,温度降至900℃以下时切换为保护气氛。
实施例3
一种仿幕墙保温装饰外墙板施工工艺,同实施例1,区别在于,所述防水胶黏剂为改性环氧树脂胶黏剂,所述改性环氧树脂胶黏剂由A、B两组分组成,其中,所述A组分包括木质素改性环氧树脂聚合单体20份、双酚A型环氧树脂26份、甲基-5-降冰片烯-2,3-二羧酸酐26份、气相白炭黑0.5份、纳米碳酸钙8份,所述气相白炭黑和纳米碳酸钙经过表面聚二甲基硅氧烷改性处理,所述B组分包括D230固化剂和固化促进剂,所述固化促进剂包括三乙醇胺和2,4,6-三(二甲氨基甲基)-苯酚,所述三乙醇胺和2,4,6-三(二甲氨基甲基)-苯酚与所述双酚A型环氧树脂的质量比例为2:1:50。
实施例4
一种仿幕墙保温装饰外墙板施工工艺,同实施例1,区别在于,所述防水胶黏剂为环氧树脂胶黏剂,所述改性环氧树脂胶黏剂由A、B两组分组成,其中,所述A组分包括双酚A型环氧树脂26份、气相白炭黑0.5份、纳米碳酸钙8份,所述气相白炭黑和纳米碳酸钙经过表面聚二甲基硅氧烷改性处理,所述B组分为D230固化剂。
对比例
分别称取氯化铝和硼酸并溶解在去离子水中,充分搅拌混合后加入正硅酸乙酯,搅拌反应2-4h,得到溶胶溶液,将所述溶胶溶液倒入模具中,待静置脱气后,得到凝胶,冻融循环2-3次,冷冻干燥脱水,脱模后转入高温炉中进行热处理,热处理温度900-1000℃,热处理时间10-60min,冷却后得到多孔保温材料;其中,所述氯化铝与所述硼酸、去离子水、正硅酸乙酯的质量比例为1.95:0.45:100:(7.5-7.8)。
对实施例1、2、对比例所述外保温层的基本性能进行测试,测试结果如下:
对实施例1、3、4所述防水胶黏剂的基本性能进行测试,测试结果如下:
实施例1 | 实施例3 | 实施例4 | |
初凝时间(25℃) | 227s | 184s | 423s |
固化时间(25℃) | 476s | 371s | 768s |
弯曲弹性模量≥3900MPa | 5800MPa | 6300MPa | 5200MPa |
拉剪强度(钢-钢)>13MPa | 16.9MPa | 18.7MPa | 12.4MPa |
压剪强度(石材-石材)>12MPa | 16.1MPa | 18.0MPa | 11.8MPa |
最后应当说明的是,以上实施例仅用以说明本发明的技术方案,而非对本发明保护范围的限制,尽管参照较佳实施例对本发明作了详细地说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的实质和范围。
Claims (6)
1.一种仿幕墙保温装饰外墙板施工工艺,其特征在于,包括以下步骤:
(1)基层处理、找平:对建筑物的基层墙体进行表面处理,去除表面的凸出、松动、风化及表面污染物,使得墙体表面清洁平整,使用专用的找平材料进行墙体找平,使基层墙体的平整度达到施工规范要求;
(2)粘贴前处理:在找平后的基层墙体上按设计分格要求弹线,确定每块保温装饰外墙板的粘贴位置,在粘贴前将基层墙体用水适当湿润;
(3)粘贴:在保温装饰外墙板的背面涂布专用聚合物砂浆,并使之充满于梯形槽内,然后将保温装饰外墙板按设计位置粘贴于基层墙体上,并保证其粘贴平整度;
(4)打胶勾缝:按设计要求用专用密封胶对板缝进行处理,形成分格效果;
(5)墙面清理:揭去粘贴完毕的保温装饰外墙板板面保护膜,进行清理;
其中,所述保温装饰外墙板由保温板和仿幕墙修饰面组成,保温板和仿幕墙修饰面间通过防水胶黏剂粘合;
所述保温板的制备方法包括以下步骤:
S1、称取聚乙烯吡咯烷酮并溶解在去离子水中,搅拌升温至沸,充分溶解后撤去热源,在搅拌条件下加入磷酸调节pH值至2-3,加入正硅酸乙酯,在室温条件下搅拌反应1-2h至透明,得到纺丝液,以静电纺丝法制备为纺丝纤维,将所述纺丝纤维转入高温炉进行煅烧处理,制得纳米二氧化硅纤维,将所述纳米二氧化硅纤维分散在聚丙烯酰胺的水溶液中,得到分散溶液;
其中,所述聚乙烯吡咯烷酮与所述去离子水、所述正硅酸乙酯的质量比例为(1-1.1):10:(3.5-3.8);所述纳米二氧化硅纤维与所述聚丙烯酰胺、水的质量比例为(0.42-0.45):(0.01-0.02):100;
S2、分别称取氯化铝和硼酸并溶解在去离子水中,充分搅拌混合后加入正硅酸乙酯,搅拌反应2-4h,得到溶胶溶液,将所述溶胶溶液加入到所述分散溶液中,充分搅拌混合后得到混合溶液,将所述混合溶液倒入模具中,待静置脱气后,得到凝胶,冻融循环2-3次,冷冻干燥脱水,脱模后转入高温炉中进行热处理,热处理温度900-1000℃,热处理时间10-60min,冷却后得到所述保温板;
其中,所述氯化铝与所述硼酸、去离子水、正硅酸乙酯的质量比例为1.95:0.45:100:(7.5-7.8);
S3、将氨硼烷分散溶解在二甲氧基四乙二醇中,在5-10kPa的氩气保护气氛下,将氨硼烷的二甲氧基四乙二醇溶液加热至100-120℃并保温1h,得到混合气氛,将步骤S2制得的保温板置于所述混合气氛中并封闭进行气氛扩散处理,扩散完成后将保温板进行二次热处理,待冷却至室温后制得。
2.根据权利要求1所述的一种仿幕墙保温装饰外墙板施工工艺,其特征在于,所述纺丝纤维煅烧处理的温度在1000-1300℃,煅烧时间在0.5-2h。
3.根据权利要求1所述的一种仿幕墙保温装饰外墙板施工工艺,其特征在于,所述防水胶黏剂为改性环氧树脂胶黏剂,所述改性环氧树脂胶黏剂由A、B两组分组成,其中,所述A组分包括木质素改性环氧树脂聚合单体、双酚A型环氧树脂、甲基-5-降冰片烯-2,3-二羧酸酐、气相白炭黑、纳米碳酸钙,所述气相白炭黑和纳米碳酸钙经过表面聚二甲基硅氧烷改性处理,所述B组分为固化剂。
4.根据权利要求3所述的一种仿幕墙保温装饰外墙板施工工艺,其特征在于,所述木质素改性环氧树脂聚合单体的制备方法包括以下步骤:
A1、称取木质素磺酸盐并溶解在去离子水中,充分混合均匀后加入4-甲基愈创木酚和市售37%的甲醛溶液,充分混合均匀,得到溶液A,在保护气氛下,将所述溶液A加热升温至沸,保温回流3-5h,反应完成后冷却至室温,离心分离上清液,以石油醚和乙酸乙酯的混合溶剂为流动相,经硅胶柱色谱纯化去除未反应原料,再蒸除溶剂后制得酚化的木质素基产物;
其中,所述木质素磺酸盐与所述去离子水、所述4-甲基愈创木酚和所述甲醛的摩尔比例为20:(100-200):2:1;
A2、称取所述酚化的木质素基产物并分散在环氧氯丙烷中,加入苄基三乙基氯化铵做催化剂,混合后在80-100℃下保温搅拌反应1-2h,反应完成后冷却至室温,再依次加入与前次等量的苄基三乙基氯化铵和氢氧化钠溶液,混合后继续在室温条件下搅拌反应0.5-1h,加入乙酸乙酯洗涤并分离有机相,以无水硫酸盐干燥后,蒸除溶剂以及过量的环氧氯丙烷,以石油醚和乙酸乙酯的混合溶剂为流动相,经硅胶柱色谱纯化去除未反应原料,再次蒸除溶剂后制得碳酸酯化产物,即为所述木质素改性环氧树脂聚合单体;
其中,所述酚化的木质素基产物与所述环氧氯丙烷、所述苄基三乙基氯化铵、所述氢氧化钠的质量比例为(1.2-1.3):4:(0.09-0.1):(0.65-0.7)。
5.根据权利要求3所述的一种仿幕墙保温装饰外墙板施工工艺,其特征在于,按重量份数计,所述木质素改性环氧树脂聚合单体、双酚A型环氧树脂、甲基-5-降冰片烯-2,3-二羧酸酐、气相白炭黑、纳米碳酸钙重量份数依次为18-22份、25-30份、25-30份、0.1-1.5份、6-10份。
6.根据权利要求3所述的一种仿幕墙保温装饰外墙板施工工艺,其特征在于,所述固化剂中还包括有固化促进剂,所述固化促进剂包括三乙醇胺和2,4,6-三(二甲氨基甲基)-苯酚。
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