CN108951291A - 一种低温绝热纸及其制备方法 - Google Patents
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005360 mashing Methods 0.000 claims abstract description 26
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 14
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- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 12
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 18
- 238000010009 beating Methods 0.000 claims description 17
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000006185 dispersion Substances 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 11
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
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- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
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- 239000011521 glass Substances 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims 1
- 238000006297 dehydration reaction Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000011810 insulating material Substances 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- D—TEXTILES; PAPER
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- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
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- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
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- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
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- D—TEXTILES; PAPER
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- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
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- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
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- D—TEXTILES; PAPER
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- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
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- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/64—Alkaline compounds
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- D—TEXTILES; PAPER
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- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
Abstract
本发明公开了一种低温绝热纸,它包括无碱玻璃纤维30份,直径为0.1~0.2μm;高碱玻璃纤维30份,直径为0.2~0.3μm;氧化锆纤维15份,直径为0.5~2μm;氧化镁纤维7份,直径为0.5~1μm;分子筛5份,过400目筛。与现有技术相比,本发明采用4种纤维为原料,通过对打浆程度的控制和分子筛的加入,制备得到性能突出的低温绝热纸。
Description
技术领域
本发明属于绝热材料领域,具体涉及一种低温绝热纸及其制备方法。
背景技术
绝热材料是指能阻滞热流传递的材料,又称热绝缘材料。传统绝热材料,如玻璃纤维、石棉、岩棉、硅酸盐等,新型绝热材料,如气凝胶毡、真空板等。它们用于建筑围护或者热工设备、阻抗热流传递的材料或者材料复合体,既包括保温材料,也包括保冷材料。绝热材料一方面满足了建筑空间或热工设备的热环境,另一方面也节约了能源。因此,有些国家将绝热材料看作是继煤炭、石油、天然气、核能之后的“第五大能“。目前,现有的绝热材料,特别是低温绝热材料大多效果不佳,满足不了实际生产需求。
发明内容
本发明要解决的技术问题是提供一种低温绝热纸,以解决现有技术存在的效果不佳等问题。
为解决上述技术问题,本发明采用的技术方案如下:
一种低温绝热纸,它包括如下质量份数的组分:
其中,无碱玻璃纤维的直径为0.1~0.2μm,高碱玻璃纤维的直径为0.2~0.3μm,氧化锆纤维的直径为0.5~2μm,氧化镁纤维的直径为0.5~1μm,分子筛过400目筛。
上述低温绝热纸的制备方法,它包括如下步骤:
(1)将配方量的无碱玻璃纤维于硫酸水溶液中进行打浆分散,除渣后得到浆料备用;
(2)将配方量的高碱玻璃纤维于草酸水溶液中进行打浆分散,除渣后得到浆料备用;
(3)将配方量的氧化锆纤维于NaOH水溶液中进行打浆分散,除渣后得到浆料备用;
(4)将配方量的氧化镁纤维于过氧化氢水溶液中进行打浆分散,除渣后得到浆料备用;
(5)将步骤(1)~(4)中所得浆料混合后继续打浆,打浆完成后加入配方量的分子筛,再次打浆后调节pH并除渣,得到混合浆料;
(6)将步骤(5)中得到的混合浆料稀释后于造纸机中进行湿法成型,得到湿纸,湿纸经脱水,干燥后,即得低温绝热纸。
步骤(1)中,硫酸水溶液的浓度为0.5mol/L;浆料中,无碱玻璃纤维的浓度为1~2wt%,打浆度为55~60°。
步骤(2)中,草酸水溶液的浓度为0.2mol/L;浆料中,高碱玻璃纤维的浓度为0.8~1.5wt%,打浆度为55~60°。
步骤(3)中,NaOH水溶液的浓度为1mol/L;浆料中,氧化锆纤维的浓度为2~2.5wt%,打浆度为60~65°。
步骤(4)中,过氧化氢水溶液的浓度为2mol/L;浆料中,无碱玻璃纤维的浓度为2.2~2.4wt%,打浆度为60~65°。
步骤(5)中,加入分子筛前,打浆至打浆度为40~45°,加入分子筛前,打浆至打浆度为50~55°。
步骤(5)中,调节pH所用试剂为碳酸钠水溶液或硫酸水溶液,调节pH至3.7。
步骤(6)中,混合浆料稀释至无碱玻璃纤维、高碱玻璃纤维、氧化锆纤维和氧化镁纤维的总浓度为0.15wt%。
步骤(6)中,干燥温度为120~130℃。
有益效果:
与现有技术相比,本发明采用4种纤维为原料,通过对打浆程度的控制和分子筛的加入,制备得到性能突出的低温绝热纸。
具体实施方式
根据下述实施例,可以更好地理解本发明。然而,本领域的技术人员容易理解,实施例所描述的内容仅用于说明本发明,而不应当也不会限制权利要求书中所详细描述的本发明。
实施例1
材料及其份数:无碱玻璃纤维30份,直径为0.1~0.2μm;高碱玻璃纤维30份,直径为0.2~0.3μm;氧化锆纤维15份,直径为0.5~2μm;氧化镁纤维7份,直径为0.5~1μm;分子筛5份,过400目筛。
制备方法:
(1)将配方量的无碱玻璃纤维于0.5mol/L的硫酸水溶液中进行打浆分散,除渣后得到浓度为1.5wt%,打浆度为58°的浆料备用;
(2)将配方量的高碱玻璃纤维于0.2mol/L的草酸水溶液中进行打浆分散,除渣后得到浓度为1wt%,打浆度为56°的浆料备用;
(3)将配方量的氧化锆纤维于1mol/L的NaOH水溶液中进行打浆分散,除渣后得到浓度为2.2wt%,打浆度为62°浆料备用;
(4)将配方量的氧化镁纤维于2mol/L的过氧化氢水溶液中进行打浆分散,除渣后得到浓度为2.3wt%,打浆度为63°浆料备用;
(5)将步骤(1)~(4)中所得浆料混合后继续打浆至打浆度为42°,打浆完成后加入配方量的分子筛,再次打浆至打浆度为53°,然后用碳酸钠水溶液或硫酸水溶液调节pH至3.7并除渣,得到混合浆料;
(6)将步骤(5)中得到的混合浆料稀释至无碱玻璃纤维、高碱玻璃纤维、氧化锆纤维和氧化镁纤维的总浓度为0.15wt%,于造纸机中进行湿法成型,得到湿纸,湿纸经脱水,120℃下干燥后,即得低温绝热纸。
对比例1
材料与制备方法同实施例1,所不同的是,步骤(1)~(4)中,无碱玻璃纤维、高碱玻璃纤维、氧化锆纤维和氧化镁纤维均于0.5mol/L的硫酸水溶液中进行打浆分散。
对比例2
材料与制备方法同实施例1,所不同的是,将氧化镁纤维替换为等质量的氧化锆纤维。
对比例3
材料与制备方法同实施例1,所不同的是,将氧化锆纤维和氧化镁纤维均替换为等质量的无碱玻璃纤维。
对比例4
材料与制备方法同实施例1,所不同的是,步骤(1)~(4)中,所得浆料的浓度均为2.5wt%。
对比例5
材料与制备方法同实施例1,所不同的是,步骤(5)中,加入分子筛前,不进行打浆。
对比例6
材料与制备方法同实施例1,所不同的是,步骤(5)中,加入分子筛后,不进行打浆。
对实施例1和对比例1~6中所得低温绝热纸进行对比,相关参数如表1所示。(请补充,其中,实施例1中的数据应很好,但也不要太夸张,对比例1~4中,主要在前4项的性能弱于实施例1,对比例5和6中,主要在透气度上比实施例1差)
表1
从上表可看出,4种纤维原料的组合使用,能很大的提高产品的性能;同时,在步骤(5)中,在加入分子筛前后,均进行打浆,有利于产品透气性能的提高。
Claims (10)
1.一种低温绝热纸,其特征在于,它包括如下质量份数的组分:
2.根据权利要求1所述的低温绝热纸,其特征在于,无碱玻璃纤维的直径为0.1~0.2μm,高碱玻璃纤维的直径为0.2~0.3μm,氧化锆纤维的直径为0.5~2μm,氧化镁纤维的直径为0.5~1μm,分子筛过400目筛。
3.权利要求1所述的低温绝热纸的制备方法,其特征在于,它包括如下步骤:
(1)将配方量的无碱玻璃纤维于硫酸水溶液中进行打浆分散,除渣后得到浆料备用;
(2)将配方量的高碱玻璃纤维于草酸水溶液中进行打浆分散,除渣后得到浆料备用;
(3)将配方量的氧化锆纤维于NaOH水溶液中进行打浆分散,除渣后得到浆料备用;
(4)将配方量的氧化镁纤维于过氧化氢水溶液中进行打浆分散,除渣后得到浆料备用;
(5)将步骤(1)~(4)中所得浆料混合后继续打浆,打浆完成后加入配方量的分子筛,再次打浆后调节pH并除渣,得到混合浆料;
(6)将步骤(5)中得到的混合浆料稀释后于造纸机中进行湿法成型,得到湿纸,湿纸经脱水,干燥后,即得低温绝热纸。
4.根据权利要求3所述的制备方法,其特征在于,步骤(1)中,硫酸水溶液的浓度为0.5mol/L;浆料中,无碱玻璃纤维的浓度为1~2wt%,打浆度为55~60°。
5.根据权利要求3所述的制备方法,其特征在于,步骤(2)中,草酸水溶液的浓度为0.2mol/L;浆料中,高碱玻璃纤维的浓度为0.8~1.5wt%,打浆度为55~60°。
6.根据权利要求3所述的制备方法,其特征在于,步骤(3)中,NaOH水溶液的浓度为1mol/L;浆料中,氧化锆纤维的浓度为2~2.5wt%,打浆度为60~65°。
7.根据权利要求3所述的制备方法,其特征在于,步骤(4)中,过氧化氢水溶液的浓度为2mol/L;浆料中,无碱玻璃纤维的浓度为2.2~2.4wt%,打浆度为60~65°。
8.根据权利要求3所述的制备方法,其特征在于,步骤(5)中,加入分子筛前,打浆至打浆度为40~45°,加入分子筛前,打浆至打浆度为50~55°。
9.根据权利要求3所述的制备方法,其特征在于,步骤(5)中,调节pH所用试剂为碳酸钠水溶液或硫酸水溶液,调节pH至3.7。
10.根据权利要求3所述的制备方法,其特征在于,步骤(6)中,混合浆料稀释至无碱玻璃纤维、高碱玻璃纤维、氧化锆纤维和氧化镁纤维的总浓度为0.15wt%。
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