WO2010009613A1 - 芳纶纤维蜂窝芯原纸及其制备方法 - Google Patents

芳纶纤维蜂窝芯原纸及其制备方法 Download PDF

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Publication number
WO2010009613A1
WO2010009613A1 PCT/CN2009/000813 CN2009000813W WO2010009613A1 WO 2010009613 A1 WO2010009613 A1 WO 2010009613A1 CN 2009000813 W CN2009000813 W CN 2009000813W WO 2010009613 A1 WO2010009613 A1 WO 2010009613A1
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Prior art keywords
fiber
hot rolling
paper
honeycomb core
base paper
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PCT/CN2009/000813
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English (en)
French (fr)
Inventor
衡沛之
唐文勇
陶世毅
王丽萍
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成都龙邦新材料有限公司
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Priority to US13/055,293 priority Critical patent/US8764941B2/en
Publication of WO2010009613A1 publication Critical patent/WO2010009613A1/zh

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/26—Polyamides; Polyimides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/24—Polyesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149—Honeycomb-like

Definitions

  • the present invention relates to the field of synthetic fiber paper, and more particularly to a honeycomb core base paper containing aramid fibers.
  • the invention also relates to a process for the preparation of the aramid fiber honeycomb core base paper. Background technique
  • aramid fiber paper which has high strength, low deformation, high temperature resistance, chemical resistance, fatigue-free reaction and excellent insulation properties, came into being.
  • aramid 1414 a polyphenol terephthalamide p-phenylenediamine fiber
  • polyester fiber polyethylene terephthalate fiber
  • the invention is not satisfactory in terms of paper making properties and paper forming properties.
  • Chinese Patent Application No. CN1570271 discloses a carbon fiber aramid fiber synthetic paper and a wet process, wherein the structural fibers are carbon fibers and aramid fibers, and the binder fibers are polyester or polyphenylene ether fibers.
  • the synthetic fiber paper component due to the presence of carbon fibers, the use thereof is biased toward heat transfer and electrical conduction, and the insulation and heat insulating properties are slightly inferior.
  • An object of the present invention is to provide a new synthetic fiber paper (honeycomb core paper) which is prepared by mixing fibrillar fibers of para-aramid fiber (1414 fiber) and meta-aramid fiber (1313 fiber), if necessary, Add a small amount of polyester fiber.
  • the meta-aramid fibrid is added, and a small amount of polyester fiber is added, thereby greatly improving the paper making performance and paper forming performance, and satisfying the manufacturing process of the honeycomb panel. Claim.
  • paper produced within the scope of the process has good insulation properties and can be used in insulating composites. At present, this synthetic fiber paper manufacturing process has not been seen at home and abroad.
  • the para-aramid fiber (1414 fiber) is used as the structural fiber
  • the fibrid fiber of the meta-aramid fiber is used as the bonding fiber
  • the polyester fiber is only used as the reinforcing fiber, and Reducing the amount of polyester fiber, thereby greatly improving the paper making performance and paper forming performance, especially the porosity of the paper, and the paper temperature resistance is improved, meeting the manufacturing process requirements of the aramid honeycomb core.
  • the content of the structural fiber is preferably 11 to 90 parts by weight
  • the content of the binder fiber is 10 to 70 parts by weight
  • the content of the added fiber is 0 to 19 parts by weight.
  • the structural fiber is a poly(p-phenylene terephthalamide) (aramid fiber 1414) fiber having a fineness of 1 to 2 d and a length of 0.05 to 10 mm;
  • the binder fiber is poly(m-benzoyl) M-phenylenediamine fibrid, which is a fine, irregular fibrous or film-like piece, two of which are three micrometers in three dimensions;
  • the added fiber is polyester fiber, and the softening point is 238 ⁇ 240 °C
  • the melting point is 255 ⁇ 260 ° C, the fineness is 2 d, and the length is 0.5 - 7 mm.
  • the poly(m-phenylene isophthalamide) fibrid as a binder fiber is prepared by separately feeding a poly-m-phthalamide solution having a viscosity (1.6 to 1.9) to a decanter, and the solution is depolymerized. In addition to isophthalamide, it also contains water and calcium chloride. The polymer is precipitated by a controlled coagulation composition.
  • the rotor speed of the decanter is 6000 ⁇ 7000 rpm, and a good quality for papermaking is produced at high rotation speed.
  • the shearing force of the fiber is precipitated, and the two-dimensionally thin film-like fiber is precipitated, and finally, after washing with water, and beating and refining, a fibrid fiber slurry is obtained.
  • the entangled fibers are unraveled and the specific surface area of the fibrids is increased, thereby enhancing the hydrogen bonding between the fibers.
  • the quality of the resulting fibrids will directly affect the mechanical strength of the synthetic paper.
  • the addition of the defibrating fiber slurry to the synthetic pulp imparts a paper-forming property to the synthetic pulp similar to that of the vegetable pulp, while also imparting a higher initial strength to the un-rolled wool paper, and in the subsequent hot rolling process. , the strength of the fibrid under the action of high temperature and high pressure Got a more complete improvement.
  • the degree of pulping of the fibrids controlled by the invention is 25-55. SR. Fibrids can also be purchased directly from commercial sources.
  • Another object of the present invention is to provide a process for preparing the honeycomb core base paper of the present invention, which can be produced by a conventional paper making method and apparatus.
  • aramid 1414 short fiber and polyester fiber are added to water to be decomposed to obtain a slurry A; and aramid meta-fiber is slurried to obtain a slurry B.
  • the slurry A and the slurry are combined to form a papermaking slurry, and the papermaking slurry is paper-cut by a paper machine, and the slurry is uniformly distributed in the headbox to the papermaking forming network, when the slurry is run along the forming wire, the water
  • the paper is filtered from the pulp to form a wet paper blank, and the wet paper blank exits the forming wire and enters the dryer section of the paper machine.
  • the effect of drying is to remove moisture from the paper sheet without damaging or damaging it, and to dry it by contacting the wet paper sheet with the surface of the steam heating cylinder.
  • the dried paper sheet is hot rolled at a high temperature by a hot rolling mill, and then finished through a calender surface to obtain aramid fiber honeycomb core base paper.
  • Another aspect of the invention is a hot rolling process after the addition of fibrids and polyester fibers.
  • the invention adopts the double-temperature double-nip hot rolling process for paper sheet rolling, the first group controls the hot rolling line pressure of 0 ⁇ 100 kg/cm, the roll surface temperature is 240 ⁇ 255 ° C, and the rolling speed is 3 ⁇ 30 m / Min;
  • the second group controls the hot rolling line pressure of 30 ⁇ 200 kg / cm, the roll surface temperature is 180 ⁇ 240 °C, and the rolling speed is 3 ⁇ 30 m / min. It is required that the maximum temperature of hot rolling should be controlled between the softening point and the melting point of the polyester fiber. Hot rolling is a very important part of the production of aramid fiber paper.
  • the wet-formed aramid paper is passed through a hot rolling mill under the action of high temperature and high pressure, and the surface of the paper with fibrids is added under high pressure. A certain degree of fusion bonding occurs, and the aramid paper is heat set, which gives the paper a high physical and electrical performance.
  • the hot rolled paper is then finished with a calender and controlled - temperature 0 ⁇ 250 °C.
  • the calendering of aramid fiber paper can significantly improve the smoothness and gloss of the paper, and the most important point is to increase the uniformity of paper thickness.
  • the determination of the finishing process should be adjusted accordingly depending on the type of paper produced. In general, as the calendering pressure increases, the thickness, porosity, air permeability, and tear of the paper are reduced, and the smoothness, gloss, tightness, and elongation of the paper are improved. In addition, the thickness of the paper is reduced and the thickness uniformity is improved, which increases the dielectric strength of the paper. detailed description
  • Material source Aramid 1414 fiber: produced by Teijin
  • Polyester fiber poly(p-phthalamide) ethylene glycol fiber
  • the above-mentioned content of aramid fiber 1414 and polyester fiber were decomposed into a pulp A at a concentration of 1% by weight in a hydraulic disintegrator, and the pulp fibrid was beaten by a refiner at a concentration of 2% to control the degree of beating to be about 55.
  • SR, slurried, and the slurry A and the slurry B were uniformly mixed in the batching tank to form a paper pulp which can be added to the front of the paper making net, and 5 parts of polyethylene oxide was added to the pulping tank.
  • the slurry is adjusted by the solidification tank to the net indenter, and the slurry is uniformly distributed in the headbox to the paper forming network, and the excess slurry is overflowed to the white pool.
  • the slurry runs along the forming wire, the water is filtered out of the pulp by the action of the vow rolls, the wet paper sheet leaves the mesh surface, the wet paper sheet is on the felt, and the water is further removed from the vacuum box to the wet press to be dried. unit.
  • the paper sheet is hot-rolled by hot rolling mill.
  • the hot rolling is a hot rolling process using double-temperature and double-nip zone.
  • the first group of hot-rolling line pressure is 25kg/cm, and the roll surface temperature is 250°C.
  • the rolling speed was 15 m/min; the second group of hot rolling line pressure was 130 kg/cm, the roll surface temperature was 220 ° C, and the rolling speed was 15/min.
  • the hot rolled paper is then finished by a calender and the temperature is controlled at 180 °C.
  • Table 1 The results are shown in Table 1:
  • the fiber paper of the second embodiment was prepared in the following proportions: Aramid 1414 fiber (5 ⁇ 6mm) 61 parts
  • the amount of the aramid fiber 1414 and the fibrid fiber are adjusted, and the amount of the polyester is adjusted.
  • the preparation method of the fiber paper is the same as that of the first embodiment, and the results obtained are shown in Table 2:
  • the fiber paper of this example 3 was prepared in the following proportions:
  • the amount of aramid fiber 1414 and the amount of fibrid fiber are adjusted.
  • the preparation method of the fiber paper is the same as that in the first embodiment, and the results obtained are shown in Table 2:
  • the fiber paper of the fourth embodiment was prepared in the following proportions: Aramid 1414 fiber (5 ⁇ 6mm) 30 parts
  • the fiber paper of the example 5 was prepared in the following proportions:
  • Aramid 1414 fiber (5 ⁇ 6mm) 50 parts
  • the weight fraction of the fibrids is continuously adjusted.
  • the preparation method of the fiber paper is the same as that in the first embodiment, and the results obtained are shown in Table 4:
  • the fiber paper of Example 6 was prepared in the following proportions:
  • a polyester fiber is used as the binder fiber, and the method for forming the fiber paper blank is the same as in the first embodiment, and the hot rolling temperature is adjusted to 260 to 265 ° C for one hot rolling forming.
  • Table 5 The results obtained are shown in Table 5:
  • the synthetic fiber paper of the invention has the advantages of light weight, softness, high specific strength, high specific modulus, high temperature resistance, fatigue resistance, chemical corrosion resistance, low thermal expansion coefficient and moderate permeability.
  • the honeycomb core base paper in the production of the honeycomb core, the impregnation of the resin and the bonding of the honeycomb nodes are very good, and the manufactured honeycomb panel has a particularly high plane shear modulus and plane compression modulus.
  • the invention is not limited to the above embodiment, and the ratio and the parameter of the physical and mechanical strength indexes of the synthetic fiber paper can be changed according to the proportion of the proportion of the blending ratio, the hot rolling process, and the like, and the product model and specification satisfying the special requirements of the user can be made;
  • Those skilled in the art may make various changes: changes and modifications, without departing from the spirit of the invention are within the scope of the present invention.

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Description

芳纶纤维蜂窝芯原纸及其制备方法
技术领域
本发明涉及合成纤维纸领域， 特别涉及含芳纶纤维的蜂窝芯原纸。
本发明还涉及该芳纶纤维蜂窝芯原纸的制备方法。 背景技术
随着科技的发展， 以及人们对产品越来越高的要求， 在航空航天、 军事、 电子、机械工业以及其他对安全性和轻便性要求高的行业里， 高性能合成材料 自问世以来即被得到广泛运用。 能同时具有高强度、 低变形、 耐高温、 耐化学 腐蚀、无疲劳反应和优良的绝缘性能的材料——高性能合成材料芳纶纤维纸应 运而生， 其中， 申请号为 99114635.2的中国专利中公开了一种以聚对苯二曱酰 对苯二胺纤维（芳纶 1414 )作主体纤维， 聚酯纤维（聚对苯二曱酸乙二醇酯纤 维）作粘接纤维， 制成的一种合成纤维纸， 具有一定的耐高温性、 高强度、 低 变形等优点。但该发明在纸的抄造性能和成纸性能上还不尽如人意。一是胚纸 抄造时， 纸坯强度差， 抄造废品率高； 二是胚纸热轧后， 纸张紧度不足， 孔隙 率高， 渗透性大， 在蜂窝板制造时， 胶料渗透难以控制； 三是在蜂窝纸板中的 热态下的强度保持率不够。
中国专利申请 CN1570271中，公开了一种碳纤维芳纶纤维合成纸及湿法抄 造技术， 其结构纤维是碳纤维和芳纶纤维， 粘接纤维是聚酯或聚苯充醚纤维。 该合成纤维纸成分中因碳纤维的存在， 其使用偏向于传热和导电方面的用途， 绝缘和隔热性能稍差。
中国专利申请号 200610063513.2的含有玄武岩纤维及芳纶纤维的合成纤维 纸及其制备方法和中国专利申请号 200610063595.0的含有聚苯^ ^醚及化学纤 维的合成纤维纸及其制备方法，两者都公开了一种以聚苯硫醚纤维为粘接纤维 的合成纤芳纶维纸的生产方法， 文献中仅将芳纶沉析纤维作为填充材料，纸页 均存在孔隙率高， 渗透性过度的问题。
在上述用芳纶 1414纤维生产合成纸的工艺中，均采用聚酯或聚苯¾醚热熔 性纤维作粘接纤维， 其粘接效果为点粘接， 纤维间的空穴多， 纸页结构疏松， 在蜂窝板的生产中， 树脂的渗透非常难控制， 并且在高聚酯用量时， 蜂窝板的 热态强度保持率达不到要求。 发明内容
本发明一个目的是提供一种新的合成纤维纸 （蜂窝芯原纸）， 采用对位芳 纶纤维（ 1414纤维）与间位芳纶纤维（ 1313纤维）的沉析纤维混合抄造， 需要 时， 可添加少量聚酯纤维。
在以对位芳纶胚纸的抄造过程中， 添加间位芳纶沉析纤维， 并添加少量聚 酯纤维，进而大大地改善了纸的抄造性能和成纸性能， 满足了蜂窝板的制造工 艺要求。 此外， 在该工艺要求的范围内制造出的纸， 有着较好的绝缘性能， 可 在绝缘复合材料方面使用。 目前，这种合成纤维纸制造工艺在国内外还未见 4艮 道。
在本发明的纤维纸中， 以对位芳纶纤维（1414纤维）作为结构纤维， 以间 位芳纶纤维的沉析纤维作粘接纤维， 而将聚酯纤维仅作添加纤维， 并大幅度降 低聚酯纤维用量，进而大大地改善了纸的抄造性能和成纸性能，特别是成纸的 孔隙率， 且纸的耐温性能得到提高， 满足了芳纶蜂窝芯的制造工艺要求。 优选 的结构纤维的含量为 11〜90重量份， 粘接纤维的含量为 10〜70重量份， 添加纤维 的含量为 0~19重量份。
在优选的实施方案中，结构纤维是聚对苯二曱酰对苯二胺（芳纶纤维 1414 ) 纤维， 纤度 l ~ 2 d、 长度 0.05 ~ 10 mm; 粘接纤维是聚间苯二曱酰间苯二胺沉 析纤维， 该纤维是细小的、 无规则的纤维状或薄膜状碎片， 其三维尺寸中的两 个达微米级；添加纤维为聚酯纤维，软化点为 238 ~ 240°C、熔点为 255 ~ 260°C， 纤度卜 2 d、 长度 0. 5 ~ 7 mm。 ≤
作为粘接纤维的聚间苯二曱酰间苯二胺沉析纤维的制备是分别将一定粘 度（ 1.6 ~ 1.9 ) 的聚间苯二曱酰胺溶液输送至沉析机中， 所述溶液除聚间苯二 曱酰胺外， 还包含有水和氯化钙， 利用可控的凝固组合物使聚合物沉淀， 沉析 机的转子转速 6000 ~ 7000rpm,高转速下产生出了适合造纸的良好质量沉析纤 维的剪切力， 析出二维细小的薄膜条状的纤维， 最后经过水洗， 打浆精制后， 得到沉析纤维桨料。 通过打浆， 使缠绕在一起的纤维疏解开， 并增加了沉析纤 维的比表面积， 进而增强了纤维间的氢键结合。 制得的沉析纤维质量的好坏， 将直接影响到合成纸的机械强度。沉析纤维浆料添加到合成纸浆中，赋予了合 成纸浆类似于植物纸浆的成纸特性，同时也使未热轧的毛胚纸具有了较高的初 始强度， 并在随后的热轧过程中， 沉析纤维在高温、 高压的作用下， 这种强度 得到了更加充分地提高。 本发明控制的沉析纤维打浆度 25 ~ 55。SR。 沉析纤维 也可以通过商业途径直接购买获得。
本发明的另一个目的在于提供本发明蜂窝芯原纸的制备方法，本发明的纸 张能够用常规的造纸方法和设备来制造。 为制备本发明的纸张，在水中加入芳 纶 1414短纤维、 聚酯纤维， 经疏解， 制得浆料 A; 另以芳纶间位沉析纤维经打 浆后制得浆料 B。 然后将浆液 A与浆液 '昆合形成造纸浆料，将所述造纸浆料用 造纸机抄造，在流浆箱中浆液被均勾地分布至造纸成型网上， 当浆液沿成型网 运行时， 水从纸浆中滤除， 形成湿纸坯， 湿纸坯离开成型网进入纸机干燥部。 干燥的作用是不破坏或损坏纸页下除去水分，通过湿纸页与蒸汽加热缸的表面 接触而进行干燥。干燥后的纸页经热轧机高温热轧，然后经过压光机表面整饰， 最后得到芳纶纤维蜂窝芯原纸。 '
本发明的另一个方面，是添加沉析纤维和聚酯纤维后的热轧工艺。本发明 采用双温双压区热轧工艺对纸页轧制， 第一组控制热轧线压力 0 ~ 100 kg/cm, 轧辊表面温度为 240 ~ 255°C , 轧速为 3 ~ 30 m/min; 第二组控制热轧线压力 30 ~ 200 kg/cm，轧辊表面温度为 180 ~ 240 °C , 轧速为 3 ~ 30 m/min。 其中要求 热轧最高温度应控制在聚酯纤维的软化点和熔点之间。热轧是生产芳纶纤维纸 的一个十分重要的环节， 经湿法成形的芳纶胚纸， 通过热轧机， 在高温高压作 用下， 加有沉析纤维的纸表面， 则在高压下， 产生一定程度的熔粘， 芳纶纸受 热定型， 使纸张产生了较高的物理性能和电气性能。
热轧后的纸， 再经过压光机整饰， 控制 -温度 0 ~ 250°C。 对芳纶纤维纸进 行压光整饰， 类似植物纤维纸一样， 可较显著地提高纸的平滑度、 光泽度， 而 最重要的一点是增加了纸厚度的均一性。整饰工艺的确定，应视所造纸种的不 同而作相应地调整。 总的来说， 随压光压力的增加， 纸的厚度、 气孔率、 透气 度、 撕裂度降低， 同时提高了纸的平滑度、 光泽度、 紧度和伸长率。 此外降低 了纸的厚度和改善了厚度均一性， 也就提高了纸的绝缘强度。 具体实施方式
以上是对本发明的一般性描述，下面将通过具体实施方式对本发明的权利 要求作进一步解释。
材料来源： 芳纶 1414纤维： 日本帝人公司生产
芳纶 1313沉析纤维： 广东新会彩艳公司生产 、
聚酯纤维 (聚对苯二曱酰胺乙二醇酯纤维)： 河北保定聚酯厂生产
【实施例 1】
按下述比例配制本实施例 1合成纤维纸：
芳纶 1414纤维 （5 ~ 6mm) 65重量份 (以下称 "份"） 芳纶 1313沉析纤维 20份
聚酯纤维 (2 ~ 4mm) 15份
将上述含量芳纶 1414纤维和聚酯纤维， 按 1%重量浓度在水力疏解机中疏 解制成纸浆 A,另将浆沉析纤维按 2%浓度经磨浆机打浆，控制打浆度约 55。SR, 制成浆液^将浆液 A和浆液 B在配料池中混合均匀后，从而形成能够添加至造 纸网前箱的造纸纸浆， 在稳浆箱中加入 5份的聚氧化乙烯。 经稳浆箱调节浆液 上网压头，在流浆箱中浆液被均勾分布到造纸成型网上， 多余浆液经溢流至白 水池。 当浆液沿成形网运行时， 借助伏辊的作用， 水从纸浆中滤出， 湿纸页离 开网面， 湿纸页在毛毯上， 经真空箱到湿压榨进一步脱去水分， 进入纸机干燥 部。 随后纸页经热轧机复合热轧， 热轧是采用双温双压区的热轧工艺对纸页轧 制， 其中第一组热轧线压力 25kg/cm， 轧辊表面温度为 250°C， 轧速为 15m/min; 第二组热轧线压力 130 kg/cm， 轧辊表面温度为 220°C， 轧速为 15/min。 热轧后 的纸， 再经过压光机整饰, 控制温度 180°C 得到的结果见表 1 :
表 1 纤维纸的物理机械性能
项 目 单 位 测试结果
里 g/m2 47.2
厚 度 mm 0.058
抗张强度 KN/m MD 3.58
伸长率 % MD 2.6
渗透时间 S 18.2
表面吸收性 % 22.3
【实施例 2】
按下述比例配制本实施例 2纤维纸： 芳纶 1414纤维 (5 ~ 6mm) 61份
芳纶 1313沉析纤维 20份
聚酯纤维 (2 ~ 4mm) 19份
本实施例调整芳纶 1414纤维和沉析纤维用量， 以及调整聚酯的用量， 纤 维纸的制备方法与实施例 1相同， 得到的结果见表 2:
表 2 纤维纸的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 46.8
厚 度 mm 0.061
抗张强度 KN/m MD 3.91
伸长率 % MD 2.25
渗透时间 S 15.4
表面吸收性 % 22.6
【实施例 3】
按下述比例配制本实施例 3纤维纸：
芳纶 1414纤维 (5 ~ 6mm) 85份
芳纶 1313沉析纤维 15份
本实施例调整芳纶 1414纤维和沉析纤维用量，纤维纸的制备方法与实施 例 1相同， 得到的结果见表 2:
表 3 纤维纸 物理机械性能
项 目 单 位 测试结果
Λ_ 里 g/m2 45.8
厚 度 mm 0.057
抗张强度 KN/m MD 1.6
伸长率 % MD 2.01
渗透时间 S 14.4
表面吸收性 % 24.6
【实施例 4】
按下述比例配制本实施例 4纤维纸： 芳纶 1414纤维 （5 ~ 6mm) 30份
芳纶 1313沉析纤维 70份
本实施例调整芳纶 1414纤维和沉析纤维重量份，纤维纸的制备方法与实 施例 1相同， 得到的结果见表 3:
表 4 纤维纸的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 46.4
厚 度 mm 0.052
抗张强度 KN/m MD 2.03
伸长率 % MD 1.81
渗透时间 25.4
表面吸收性 % 16.9
【实施例 5】
按下述比例配制本实施例 5纤维纸：
芳纶 1414纤维 （5 ~ 6mm) 50份
芳纶 1313沉析纤维 50份
本实施例继续调整沉析纤维的重量份， 纤维纸的制备方法与实施例 1相 同， 得到的结果见表 4:
表 5 纤维纸的物理机械性能
项 目 单 位 测试结果
里 g/m2 45.6
厚 度 mm 0.059
抗张强度 KN/m MD 2.8
伸长率 % MD 2.4
渗透时间 S 20.5
表面吸收性 % 18.8
【实施例 6】
按下述比例配制本实施例 6纤维纸:
芳纶 1414纤维 （5 ~ 6mm) 聚酯纤维 (2 ~ 4mm) 35份
本实施例以聚酯纤维作粘接纤维，纤维纸坯的抄造方法与实施例 1相同， 调整热轧温度 260 ~ 265°C , 一次热轧成型。 得到的结果见表 5:
表 6 纤维纸的物理机械性能
项 目 ' 单 位 测试结果
里 g/m2 46.2
厚 度 mm 0.069
抗张强度 KN/m MD 4.51
伸长率 % MD 2.47
渗透时间 S 7.6
表面吸收性 % 28.9 工业应用性
本发明的合成纤维纸具有轻质、 柔软、 高比强、 高比模、耐高温、耐疲劳、 抗化学腐蚀、 低热膨胀系数、 渗透性适中等优点。 作为蜂窝芯原纸在蜂窝芯的 生产制造中，对树脂的浸渍和蜂窝结点的粘接都非常好， 制造出的蜂窝板平面 剪切模量和平面压缩模量特别高。
本发明不限于以上实施方式，可以根据参配比例、热轧工艺等参数与合成 纤维纸物理机械强度指标的依存关系， 改变配比和参数， 制成可满足用户特殊 要求的产品型号和规格； 本领域技术人员还可改做出各种 :改变和变形，在不脱 离本发明精神的前提下， 均落在本发明的范围内。

Claims

权利要求书
1、 一种芳纶纤维蜂窝芯原纸， 包含：
结构纤维 11 ~ 90重量份
粘接纤维 10 ~ 70重量份
添加纤维 0~19重量份
其中所述结构纤维是聚对苯二曱酰对苯二胺纤维 , 所述粘结纤维是聚间 苯二曱酰间苯二胺沉析纤维， 所述添加纤维为聚酯纤维。
2、 权利要求 1所述的芳纶纤维蜂窝芯原纸， 其特征在于所述聚对苯二曱 酰对苯二胺纤维的纤度为 1 ~ 2d、 长度为 0.05~ 10mm。
3、 权利要求 2所述的芳纶纤维蜂窝芯原纸， 其特征在于所述的聚酯纤维 为聚对苯二曱酸乙二醇酯纤维， 软化点为 238 240 ° ( 、 熔点为 255~260°C, 纤度 l~2d、 长度 0.5~7mm。
4、 权利要求 1所述的芳纶纤维蜂窝芯原纸， 包括下述组分：
聚对苯二曱酰对苯二胺纤维 65重量份
聚间苯二曱酰间苯二胺沉析纤维 20重量份
聚对苯二曱酸乙二醇酯纤维 15重量份。
5、 权利要求 1所述的芳纶纤维蜂窝芯原纸， 其特征在于通过湿法抄造将 所述结构纤维、 粘接纤维和添加纤维抄造成形， 并经过热轧制备所述芳纶纤 维蜂窝芯原纸。
6、 权利要求 5所述的芳纶纤维蜂窝芯原纸， 其特征在于所述热轧为双温 双压区热轧， 第一组热轧线压力 0~ 100kg/cm, 轧辊表面温度为 240 ~ 255 °C, 轧速为 3 ~ 30m/min;第二组热轧线压力 30 ~ 250 kg/cm,轧辊表面温度为 180― 230 °C , 轧速为 3~30m/min。
7、 权利要求 1所述的芳纶纤维蜂窝芯原纸的制备方法， 包括以下步骤：
1)在水中加入聚对苯二曱酰对苯二胺短纤维及聚酯纤维， 经疏解， 制得桨料 A;
2)聚间苯二甲酰间苯二胺沉析纤维经打浆后制得浆料 B;
3)将浆液 A与浆液 B混合形成造纸纸浆；
4)将所述造纸纸浆抄造成形， 干燥；
5 ) 热轧； 6) 压光整饰。
8、权利要求 7所述的制备方法， 其中步骤 2)中所述的聚间苯二曱酰间苯 二胺沉析纤维的打浆度为 25 ~ 55。SR。
9、权利要求 7所述的制备方法， 其中步骤 5)所述的热轧是采用双温双压 区的热轧工艺对纸页轧制，其中第一组热轧线压力 0~ 100kg/cm，轧辊表面温 度为 240~255°C， 轧速为 3~30m/min; 第二组热轧线压力 30 ~ 250 kg/cm， 轧 辊表面温度为 180~230°C, 轧速为 3~30m/min。
10、 权利要求 7所述的制备方法， 其中进一步包括热轧后对纸张进行压 光整饰的步骤。 压光机整饰时， 控制温度 0~250°C。
PCT/CN2009/000813 2008-07-22 2009-07-21 芳纶纤维蜂窝芯原纸及其制备方法 WO2010009613A1 (zh)

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