CN106801477A - 纤维增强型聚合物水泥复合真空绝热保温板及其制备方法 - Google Patents

纤维增强型聚合物水泥复合真空绝热保温板及其制备方法 Download PDF

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CN106801477A
CN106801477A CN201610730420.4A CN201610730420A CN106801477A CN 106801477 A CN106801477 A CN 106801477A CN 201610730420 A CN201610730420 A CN 201610730420A CN 106801477 A CN106801477 A CN 106801477A
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CN106801477B (zh
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刘婷
宋永兵
任晓
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Qingdao Kerui New Environmental Protection Materials Group Co Ltd
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    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, 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
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
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    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • YGENERAL 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
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Abstract

本发明提供了一种纤维增强型聚合物水泥复合真空绝热保温板,包括真空绝热保温板和包覆在其外围的纤维增强型聚合物水泥。本发明结构合理、具有外保护层的复合真空绝热保温板,解决了施工过程中真空绝热保温板破损漏气的问题,施工安装方便,其具有优良的保温性、安全性、耐久性和轻质超薄的特点,并便于真空绝热保温板的工业化生产。

Description

纤维增强型聚合物水泥复合真空绝热保温板及其制备方法
技术领域
本发明涉及一种建筑领域的外墙保温复合板,确切的说是一种加有大量纤维的增强型聚合物水泥复合真空绝热保温板及其制备方法。
背景技术
目前常见的真空绝热保温板防火等级虽然能达到国家标准不燃或难燃,保温效果良好。但是,它们在施工过程中容易被刮伤,出现空鼓、漏气现象,利用率大大降低。
现有技术中已经存在真空绝热保温板外边包覆低碱粘结砂浆、发泡水泥、无机保温砂浆、改性水泥聚苯颗粒,而且上述技术本公司已经申请专利并获得保护。但是上述技术存在成本高、耐热性不高等问题。
本发明提供了一种新的上述技术的替换品,本发明结构合理、具有外保护层的复合真空绝热保温板,解决了施工过程中真空绝热保温板破损漏气的问题,施工安装方便,其具有优良的保温性、安全性、耐久性和轻质超薄的特点,并便于真空绝热保温板的工业化生产。
发明内容
为了解决STP真空板在操作中的刮伤,影响保温效果的问题,我们在STP真空板的表面覆盖一层纤维增强型聚合物水泥,能够使得STP真空板耐高温,可以有效防止STP真空板的高温损坏。
本发明采取的技术方案如下:一种纤维增强型聚合物水泥复合真空绝热保温板,其特征在于:所述的真空绝热保温板包括芯材和带有防护层的高强度阻气膜,所述的带有防护层的高强度阻气膜包裹在芯材的外围,并与芯材之间通过抽真空封装;所述的带有防护层的高强度阻气膜由外侧的防护层与内侧的密封层复合而成;其中,防护层为纤维增强型聚合物水泥,用于大幅度提高阻气膜的耐久性、耐磨性、硬度及整个保温板的保温性能;密封层由无纺布、铝箔、镀铝膜、聚酯薄膜、尼龙薄膜、聚乙烯薄膜、聚氯乙烯薄膜、聚苯乙烯薄膜、聚偏二氯乙烯、聚乙烯醇薄膜、乙烯- 醋酸乙烯共聚物薄膜、乙烯-乙烯醇共聚物薄膜、聚碳酸酯薄膜、聚丙烯的一种或一种以上复合而成,用于维持芯材的真空环境。
作为优选,所述的纤维增强型聚合物水泥的浆料组成按质量分数计为:
水泥20%-40%,石英砂10%-35%,聚合物乳液20%-40%,短切纤维5%-20%,相变蓄能剂10%-30%,热反射绝热粉4%-9%,重钙5%-8%,外加剂0.1%-3%,减水剂0.2%-0.4%,缓凝剂0.4%-0.8%。
作为优选,所述水泥采用硅酸盐水泥、铝酸盐水泥、硫铝酸盐水泥、铁铝酸盐水泥、镁氧水泥、高强度石膏中的一种或几种按任意比例组成的混合物。
作为优选,所述聚合物乳液为醋酸乙烯酯、乙烯、苯乙烯、丁二烯、丙烯酸酯中的一种或多种。
作为优选,所述短切纤维为碳纤维、玻璃纤维、陶瓷纤维、聚酯纤维中的一种或多种按比例组合后的混合物,其中纤维长度为3-12mm。
作为优选,所述的外加剂为聚丙烯纤维、酒石酸、羟丙基甲基纤维素、木质素和聚乙烯醇的一种或者多种按任意比例组合后得到的混合物。
作为优选,所述相变蓄能剂是以Na2SO4·10H2O、CaCl2·6H2O、Na2HPO4·12H2O中的一种或多种混合的无机水合盐为囊芯的相变微胶囊。
作为优选,所述的减水剂为木质素磺酸盐或磺化三聚氰胺甲醛树脂。
作为优选,所述的缓凝剂为一元醇、多元醇、聚乙烯醇、羧酸盐基有机物、酒石酸、磷酸盐或硼酸盐中的任意一种。
一种纤维增强型聚合物水泥复合真空绝热保温板的制备方法,其特征在于,包括以下步骤:
(1)将混合浆料的各组分称量后,充分混合,得到混合物;
(2)将步骤(1)中得到的混合物与水混合以后投入到搅拌机中搅拌10min,保证充分混合,其中水与上述各组分组成的混合物的质量比为1: 2 ;
(3)取规格尺寸的模具,在底面先平摊一层1-15mm 厚的混合浆料,再放入规格尺寸的真空绝热保温板,真空绝热保温板的面积小于模具的面积,且真空绝热保温板除底面外的其他五面与模具之间均保持相同的距离5-15mm,然后在其上面浇筑2-15mm 厚的纤维增强型聚合物水泥混合浆料,使混合浆料将整个真空绝热保温板包覆,形成防护层,然后压制8-24 h、烘干6-24 h后脱模,再在自然环境条件下用普通塑料薄膜盖住养护3-28 天即可,即得到纤维增强型聚合物水泥复合真空绝热保温板。
一种纤维增强型聚合物水泥复合真空绝热保温板的制备方法,其特征在于,包括以下步骤:
(1)平铺所述密封层,再取规格尺寸的模具压置其上,平摊一层1-20mm 厚的纤维增强型聚合物水泥的混合浆料,使混合浆料将模具内的密封层覆盖,压制8-24 h、烘干6-24 h后脱模,形成带有防护层的高强度阻气膜;
(2)所述的带有防护层的高强度阻气膜包裹在芯材的外围,并与芯材之间通过抽真空封装,形成具有防护层的复合真空绝热保温板。
本发明的有益效果在于:
1)本发明提供了一种结构合理、具有外保护层的复合真空绝热保温板,替换了目前现有技术中的保温板,解决了施工过程中真空绝热保温板因破损漏气、出现空鼓的问题,影响施工效率。复合板具有更好的耐压性、抗摔性,而且质量轻,此复合板施工安装方便,利用率大大提高;
2)将纤维增强型聚合物水泥作为保护层可以有效阻隔高温热源与STP真空板的直接接触,解决STP真空板在高温环境下壁材容易被破坏的问题;
3)所述的纤维增强型聚合物水泥复合真空绝热保温板不仅具有良好的保护层,且具有相变蓄能、红外反射等更好的保温功能。
具体实施方式
一种纤维增强型聚合物水泥复合真空绝热保温板,其特征在于:所述的真空绝热保温板包括芯材和带有防护层的高强度阻气膜,所述的带有防护层的高强度阻气膜包裹在芯材的外围,并与芯材之间通过抽真空封装;所述的带有防护层的高强度阻气膜由外侧的防护层与内侧的密封层复合而成;其中,防护层为纤维增强型聚合物水泥,用于大幅度提高阻气膜的耐久性、耐磨性、硬度及整个保温板的保温性能;密封层由无纺布、铝箔、镀铝膜、聚酯薄膜、尼龙薄膜、聚乙烯薄膜、聚氯乙烯薄膜、聚苯乙烯薄膜、聚偏二氯乙烯、聚乙烯醇薄膜、乙烯- 醋酸乙烯共聚物薄膜、乙烯-乙烯醇共聚物薄膜、聚碳酸酯薄膜、聚丙烯的一种或一种以上复合而成,用于维持芯材的真空环境。
通过在真空绝热板外部包覆纤维增强型聚合物水泥,一方面解决了目前的真空绝热板的破损问题,同时解决了真空绝热板在高温下工作容易损坏破损的现象,节约成本,可以替换目前现有技术中的相关产品。
本发明与现有的低碱粘结砂浆、发泡水泥、无机保温砂浆、改性水泥聚苯颗粒包覆物等现有技术相比,能够提高大约29%的耐压性,而且因为防护层和密封层一体形成后再抽真空,因此使得芯材和阻气膜之间会形成一定的空间,因此相对于现有技术,具有更轻的重量,能够减少大约10%左右的重量,同时因为纤维,使得保温板具有更高的耐弯折强度,能够提高大约17%的耐弯折强度。同时本申请的保温性能相对于现有技术也能提高27%左右。
作为优选,所述的纤维增强型聚合物水泥的浆料组成按质量分数计为:
水泥20%-40%,石英砂10%-35%,聚合物乳液20%-40%,短切纤维5%-20%,相变蓄能剂10%-30%,热反射绝热粉4%-9%,重钙5%-8%,外加剂0.1%-3%,减水剂0.2%-0.4%,缓凝剂0.4%-0.8%。
进一步优选,水泥22%-30%,石英砂15%-25%,聚合物乳液22%-30%,短切纤维7%-12%,相变蓄能剂11%-20%,热反射绝热粉5%-7%,重钙6%-7%,外加剂1%-2%,减水剂0.25%-0.34%,缓凝剂0.6%-0.7%。
作为优选,将各原料充分混合搅拌后加水,即得。
作为优选,其中水与上述各组分组成的混合物的质量比为1:(1.5-4),优选为1:2。
作为优选,所述水泥采用硅酸盐水泥、铝酸盐水泥、硫铝酸盐水泥、铁铝酸盐水泥、镁氧水泥、高强度石膏中的一种或几种按任意比例组成的混合物。
作为优选,所述水泥采用硅酸盐水泥、铝酸盐水泥、硫铝酸盐水泥,其质量比为1:1:2.25。
作为优选,所述聚合物乳液为醋酸乙烯酯、乙烯、苯乙烯、丁二烯、丙烯酸酯中的一种或多种。
作为优选,所述短切纤维为碳纤维、玻璃纤维、陶瓷纤维、聚酯纤维中的一种或多种按比例组合后的混合物,其中纤维长度为3-12mm;纤维用于增强防护层的柔韧性及抗折抗压性能,若纤维长度过短则会失去良好的柔韧性,若纤维长度过长则不利于浆料均匀混合,上述纤维长度是经过大量实验获得的最佳的效果。
作为优选,所述相变蓄能剂是以Na2SO4·10H2O、CaCl2·6H2O、Na2HPO4·12H2O中的一种或多种混合的无机水合盐为囊芯的相变微胶囊。
作为优选,相变微胶囊直径为0.1-0.5mm,用于增加保护层的保温及微调温功能,若相变微胶囊颗粒过小,则其包覆的相变材料过少,起不到良好的微调温作用,若相变微胶囊颗粒过大,则影响混合浆料的压制成型。
作为优选,所述热反射绝热粉由纳米氧化钛、氧化钒、氧化铁、空心玻璃微珠、海泡石、珍珠岩的一种或多种按比例组合后的混合物,用于增加保护层的热反射功能,以提高整个保温板的保温性能。
通过增加相变蓄能剂、热反射绝热粉,使本发明具有相变蓄能、红外反射功能。
作为优选,所述的外加剂为聚丙烯纤维、酒石酸、羟丙基甲基纤维素、木质素和聚乙烯醇按任意比例组合后得到的混合物。
作为优选,所述的减水剂为木质素磺酸盐或磺化三聚氰胺甲醛树脂。
作为优选,所述的缓凝剂为一元醇、多元醇、聚乙烯醇、羧酸盐基有机物、酒石酸、磷酸盐或硼酸盐中的任意一种。
一种纤维增强型聚合物水泥复合真空绝热保温板的制备方法,其特征在于,包括以下步骤:
(1)将混合浆料的各组分称量后,充分混合,得到混合物;
(2)将步骤(1)中得到的混合物与水混合以后投入到搅拌机中搅拌10min,保证充分混合,其中水与上述各组分组成的混合物的质量比为1: 2 ;
(3)平铺所述密封层,再取规格尺寸的模具压置其上,平摊一层1-20mm 厚的纤维增强型聚合物水泥的混合浆料,使混合浆料将模具内的密封层覆盖,压制8-24 h、烘干6-24 h后脱模,形成带有防护层的高强度阻气膜;
(4)所述的带有防护层的高强度阻气膜包裹在芯材的外围,并与芯材之间通过抽真空封装,形成具有防护层的复合真空绝热保温板。
下面通过具体实施例来进一步说明。
实施例1
一种纤维增强型聚合物水泥复合真空绝热保温板,包括纤维增强型聚合物水泥质量配比分别如下的成份:水泥20%,石英砂35%,聚合物乳液20%,短切纤维5%,相变蓄能剂10%,热反射绝热粉4%,重钙5%,外加剂0.1%,减水剂0.2%,缓凝剂0.7%。
将上述原材料精确计量后,投入干粉砂浆混合机中,经机械混合均匀后,与水混合继续搅拌10min,保证充分混合,其中水与上述各组分组成的混合物的质量比为1: 2。
此配比条件下,在真空绝热板两个表面复合10mm厚的纤维增强型聚合物水泥浆料,其性能如下:抗压强度为0.33MPa,复合板的密度为450kg/m3,抗折强度为0.30 MPa,导热系数为0.027W/(m·K)。
实施例2
一种纤维增强型聚合物水泥复合真空绝热保温板,包括纤维增强型聚合物水泥质量配比分别如下的成份:水泥30%,石英砂10%,聚合物乳液25%,短切纤维9%,相变蓄能剂15%,热反射绝热粉4%,重钙5%,外加剂1%,减水剂0.3%,缓凝剂0.7%。
将上述原材料精确计量后,投入干粉砂浆混合机中,经机械混合均匀后,与水混合继续搅拌10min,保证充分混合,其中水与上述各组分组成的混合物的质量比为1: 2。
此配比条件下,在真空绝热板两个表面复合10mm厚的纤维增强型聚合物水泥浆料,其性能如下:抗压强度为0.35MPa,复合板的密度为442kg/m3,抗折强度为0.32 MPa,导热系数为0.026W/(m·K)。
实施例3
一种纤维增强型聚合物水泥复合真空绝热保温板,包括纤维增强型聚合物水泥质量配比分别如下的成份:水泥35%,石英砂10%,聚合物乳液28%,短切纤维9%,相变蓄能剂12%,热反射绝热粉4%,外加剂1%,减水剂0.3%,缓凝剂0.7%。
将上述原材料精确计量后,投入干粉砂浆混合机中,经机械混合均匀后,与水混合继续搅拌10min,保证充分混合,其中水与上述各组分组成的混合物的质量比为1: 2。
此配比条件下,在真空绝热板两个表面复合10mm厚的纤维增强型聚合物水泥浆料,其性能如下:抗压强度为0.37MPa,复合板的密度为415kg/m3,抗折强度为0.35 MPa,导热系数为0.022W/(m·K)。
本发明实施例3与现有的发泡水泥、无机保温砂浆、改性水泥聚苯颗粒包覆物等现有技术相比,抗压性能提高29%以上,能够接近低碱粘结砂浆复合真空绝热保温板的抗压性能,而且因为防护层和密封层一体形成后再抽真空,因此使得芯材和阻气膜之间会形成一定的空间,因此相对于现有技术,具有更轻的重量,能够减少10%以上的重量,同时因为纤维水泥毡,使得保温板具有较高的耐弯折强度,与现有的发泡水泥、无机保温砂浆、改性水泥聚苯颗粒包覆物等现有技术相比,能够提高大约17%以上的耐弯折强度,能够接近低碱粘结砂浆复合真空绝热保温板的抗折性能。最重要的是,本申请的保温性能相对于现有技术有大幅提高,约27%以上。
表1 300×300×30mm规格的复合真空绝热保温板性能比较
表1列出了正反两面各包覆10mm厚度保护层的300×300×30mm规格的复合真空绝热保温板相关性能的实验数据。
以上所述,仅为本发明的优选实施方式,本发明的保护范围并不仅局限于上述实施例,凡属于此发明思路下的技术方案均属于本发明的保护范围。应当指出,对于本技术领域的技术人员来说,在不脱离本发明原理的任何改进也视为本发明的保护范围。

Claims (9)

1.一种纤维增强型聚合物水泥复合真空绝热保温板,其特征在于:所述的真空绝热保温板包括芯材和带有防护层的高强度阻气膜,所述的带有防护层的高强度阻气膜包裹在芯材的外围,并与芯材之间通过抽真空封装;所述的带有防护层的高强度阻气膜由外侧的防护层与内侧的密封层复合而成;其中,防护层为纤维增强型聚合物水泥;密封层由无纺布、铝箔、镀铝膜、聚酯薄膜、尼龙薄膜、聚乙烯薄膜、聚氯乙烯薄膜、聚苯乙烯薄膜、聚偏二氯乙烯、聚乙烯醇薄膜、乙烯- 醋酸乙烯共聚物薄膜、乙烯-乙烯醇共聚物薄膜、聚碳酸酯薄膜、聚丙烯的一种或一种以上复合而成。
2.根据权利要求1 所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述的纤维增强型聚合物水泥的浆料组成按质量分数计为:
水泥20%-40%,石英砂10%-35%,聚合物乳液20%-40%,短切纤维5%-20%,相变蓄能剂10%-30%,热反射绝热粉4%-9%,重钙5%-8%,外加剂0.1%-3%,减水剂0.2%-0.4%,缓凝剂0.4%-0.8%。
3.根据权利要求2所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述水泥采用硅酸盐水泥、铝酸盐水泥、硫铝酸盐水泥、铁铝酸盐水泥、镁氧水泥、高强度石膏中的一种或几种按任意比例组成的混合物。
4.根据权利要求2所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述聚合物乳液为醋酸乙烯酯、乙烯、苯乙烯、丁二烯、丙烯酸酯中的一种或多种。
5.根据权利要求2所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述短切纤维为碳纤维、玻璃纤维、陶瓷纤维、聚酯纤维中的一种或多种按比例组合后的混合物,其中纤维长度为3-12mm。
6.根据权利要求2所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述外加剂为聚丙烯纤维、酒石酸、羟丙基甲基纤维素、木质素和聚乙烯醇的一种或多种按任意比例组合后得到的混合物。
7.根据权利要求2所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述的减水剂为木质素磺酸盐或磺化三聚氰胺甲醛树脂。
8.根据权利要求2所述的纤维增强型聚合物水泥复合真空绝热保温板,其特征在于,所述相变蓄能剂是以Na2SO4·10H2O、CaCl2·6H2O、Na2HPO4·12H2O中的一种或多种混合的无机水合盐为囊芯的相变微胶囊。
9.一种根据权利要求1-8之一所述的纤维增强型聚合物水泥复合真空绝热保温板的制备方法,其特征在于,包括以下步骤:
(1)平铺所述密封层,再取规格尺寸的模具压置其上,平摊一层1-20mm 厚的纤维增强型聚合物水泥的混合浆料,使混合浆料将模具内的密封层覆盖,压制8-24 h、烘干6-24 h后脱模,形成带有防护层的高强度阻气膜;
(2)所述的带有防护层的高强度阻气膜包裹在芯材的外围,并与芯材之间通过抽真空封装,形成具有防护层的复合真空绝热保温板。
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