WO2012100653A1 - 一种芳纶蜂窝芯板 - Google Patents

一种芳纶蜂窝芯板 Download PDF

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Publication number
WO2012100653A1
WO2012100653A1 PCT/CN2012/000095 CN2012000095W WO2012100653A1 WO 2012100653 A1 WO2012100653 A1 WO 2012100653A1 CN 2012000095 W CN2012000095 W CN 2012000095W WO 2012100653 A1 WO2012100653 A1 WO 2012100653A1
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Prior art keywords
fiber
aramid
para
paper
honeycomb
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PCT/CN2012/000095
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English (en)
French (fr)
Inventor
陶世毅
衡沛之
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深圳昊天龙邦复合材料有限公司
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Priority to CN201280006680.7A priority Critical patent/CN103502532A/zh
Publication of WO2012100653A1 publication Critical patent/WO2012100653A1/zh
Priority to US13/951,421 priority patent/US20130306234A1/en

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/001—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings
    • B29D99/0021—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings provided with plain or filled structures, e.g. cores, placed between two or more plates or sheets, e.g. in a matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0089—Producing honeycomb structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • 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
    • 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
    • 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
    • D21H21/50—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 form
    • D21H21/52—Additives of definite length or shape
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • 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 invention relates to the field of honeycomb core plates, in particular to an aramid paper honeycomb core board and a preparation method thereof. Background technique
  • High-strength synthetic material aramid fiber paper which has high strength, low deformation, high temperature resistance, chemical resistance, flame retardancy, fatigue-free reaction and excellent insulation properties, came into being.
  • the patent number is ZL99114635.
  • the Chinese patent of 2 discloses a synthetic fiber paper made of polyaramid synthetic fiber and polyester fiber, which has certain advantages of high temperature resistance, high strength, low deformation, etc., but the weight loss is slightly higher, and The flame retardancy is not enough, and some special applications are not met.
  • the Chinese patent application No. 200410037774.8 discloses a manufacturing technology of carbon fiber aramid fiber synthetic paper, which has certain special properties, such as no insulation property. The ability to resist radiation is still not satisfactory.
  • Cisokawa No. 200810134636.X relates to aramid honeycomb core base paper, the bonding fiber of which is meta-aramid (poly-m-phenylene isophthalamide) fibrid and polyester fiber, meta-aramid At 370 ° C, it will decompose, and the para-aramid will decompose above 500 ° C, so its resistance to high temperature is not as good as that of 100% para-aramid.
  • meta-aramid poly-m-phenylene isophthalamide
  • Chinese Patent Application No. 200510035261.8 discloses a preparation method of all-para-aramid paper, but the binder fiber is a para-aramid pulp.
  • the pulp is obtained by disc grinding with short fibers to make the short fibers microfibrillated, and the sticking ability is poor, and the prepared aramid paper has low strength.
  • the choice of binder fiber is crucial for the paper-forming property after papermaking.
  • polyester or poly is used.
  • the phenyl sulfide hot-melt fiber is used as the bonding fiber, and the bonding effect is point bonding, the number of holes between the fibers is large, and the structure of the paper sheet is loose.
  • the penetration of the resin is very difficult to control, and is high.
  • the thermal strength retention rate of the honeycomb panel is not satisfactory.
  • Another option is to use a pulp of aramid fiber 1414 as a binder fiber to make a synthetic fiber paper containing pure para-aramid fibers.
  • the pulp is usually cut through 1414 aramid fibers and then ground or beaten. Machine, made by fiber fibrillation step, into paper Poor strength limits the use of aramid paper.
  • the invention combines the advantages of the full para-aramid fiber and the all-para-aramid fiber, and prepares aramid fiber paper which is directly drawn and fully rolled by the full para-aramid fiber, Aramid fiber paper is used to make honeycomb core sheets. At present, this all-parallel aramid honeycomb core board has not been reported at home and abroad. Summary of the invention
  • An object of the present invention is to provide an aramid honeycomb core board prepared from all-para-aramid fiber paper having a very excellent compressive modulus and shear modulus strength effect.
  • An aramid honeycomb core board prepared from all-para-aramid fiber paper characterized in that the all-para-aramid fiber paper is made of the following fibers:
  • the structural fiber is a polyparaphenylene terephthalamide fiber
  • the binder fiber is polyparaphenylene terephthalamide fibrid
  • the all-para-aramid fiber synthetic paper is prepared by a wet paper method by a paper machine; and the whole para-aramid fiber synthetic paper is glued, laminated, pressed, stretched, shaped, Dipping, solidifying and slitting to prepare aramid honeycomb core board.
  • the all-para-aramid fiber paper is made of the following fibers:
  • the structural fiber is a polyparaphenylene terephthalamide fiber
  • the binder fiber is polyparaphenylene terephthalamide fibrid
  • the all-para-aramid fiber synthetic paper is produced by a paper machine and wet-laid. More preferably, the all-para-aramid fiber paper is made of the following fibers:
  • the structural fiber is a polyparaphenylene terephthalamide fiber
  • the binder fiber is a polyparaphenylene terephthalamide fibrid
  • the all-para-aramid fiber synthetic paper It is made by a paper machine and wet method. Specifically, the above-described all-para-aramid fiber paper is prepared by the following steps:
  • the hot rolling line pressure is 200 to 300 kg/cm
  • the roll surface temperature is 280 to 340.
  • the rolling speed is 3 ⁇ 30 m / min.
  • the degree of paddle of the fibrid in the above step 2) is 25-75 ° SR.
  • the structural fibers are all-para-aramid chopped fibers and/or all-para-aramid pulps having a dimensional fineness of 1 to 2 d and a fiber length of 0.5 to 8 mm.
  • the structural fibers are all-para-aramid chopped fibers and/or all-para-aramid paddles having a dimensional fineness of 1 to 2 d and a fiber length of 1.5 to 8 mm.
  • the preparation of aramid honeycomb core sheets from synthetic fiber paper comprises the following steps:
  • the above preparation method comprises the following steps:
  • the drawn honeycomb block is fully dipped in a dipping tank for 4-8 hours, wherein the glue is a mixture of an epoxy resin and a phenolic resin;
  • the dried and shaped honeycomb block is placed in a drying room and cured at 180 ° C for 4-8 hours;
  • the all-para-aramid fiber of the present invention is chemically named polyterephthaloyl-p-phenylenediamine fibre; or 1414 (Fanglun 1414), the English name is PPTA.
  • the binder fiber of the present invention is a para-aramid fibrid.
  • the para-fibrous fiber is prepared by conveying a certain viscosity of the polyterephthalamide resin into the decanter, and solidifying the polymer by the controlled coagulation composition, and the rotor speed of the decanter is 6000-7000 rpm, high rotation speed.
  • the shearing force of a good quality fibrid fiber suitable for papermaking is produced, and a two-dimensional fine film strip fiber is precipitated, and finally, after being washed with water and refined by beating, a full-parallel fibrid fiber slurry is obtained.
  • the entangled fibers are unraveled, and the specific surface area of the fibrids is increased, thereby enhancing the bond energy between the fibers.
  • the quality of the prepared fissure fiber 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 high initial strength to the un-rolled wool paper, and in the subsequent hot rolling process.
  • the full-parallel fibrillation fiber is more fully enhanced under the action of high temperature and high pressure. It can be considered that the degree of pulping of the precipitated fibers controlled by the present invention is 25 to 75.81.
  • the strength, tightness, and permeability of all-para-aramid fiber paper will directly affect the manufacture of paper honeycomb cores.
  • the paper has low strength and can not meet the requirements of mechanical processing; the tightness is low and the permeability is large.
  • the rubber material easily penetrates into the back of the paper, and the white honeycomb is not stretched; the tightness is high, the permeability is low, and The sizing effect of the styling gel is not achieved.
  • the invention has a very high compression modulus and shear modulus by using a full para-aramid honeycomb core board made of all-para-aramid fiber paper, and can be widely used in aerospace, military, electronic, The machinery industry and other industries that require high safety and portability.
  • the above is a general description of the present invention, and the claims of the present invention will be further explained by the specific embodiments. DETAILED DESCRIPTION OF THE INVENTION
  • Aramid 1414 fiber Poly(p-phenylene terephthalamide), produced by Teijin, Ltd., trade name: twaron®1080
  • Aramid 1414 fibrid Poly(p-phenylene terephthalamide) fibrid. Produced by Teijin, Japan, trade name: twaron®8016
  • Aramid 1414 pulp (Model 1094) : Poly(p-phenylene terephthalamide) pulp, produced by Teijin, Ltd., trade name: twaron®1094
  • All-para-aramid fiber paper is prepared in the following proportions and used to make aramid honeycomb core sheets:
  • Aramid 1414 fiber or 1414 pulp 35 parts by weight (hereinafter referred to as "parts")
  • the above content of aramid fiber 1414 was decomposed into pulp A in a hydraulic disintegrator at a concentration of 1% by weight, and the 1414 fibrid was disintegrated in a hydropulper at a concentration of 2%, and subjected to grinding and beating to control the degree of beating.
  • a slurry of about 8° SR was prepared. After the slurry A and the slurry B were uniformly mixed in the batching tank, a paper pulp which can be added to the front box of the papermaking net was formed, and 5 parts of polyethylene oxide was added to the slurry tank.
  • the slurry is adjusted to the net indenter through the solidification tank, and the slurry is uniformly distributed to the paper forming network in the headbox, and the excess slurry is overflowed to the white pool.
  • the water is filtered out of the pulp by the action of the vow rolls, wet The paper sheet leaves the mesh surface, and the wet paper sheet is on the felt.
  • the water is further removed from the vacuum box to the wet press to enter the dryer section of the paper machine. Then the paper sheet is hot rolled by hot rolling mill, and the hot rolling line pressure is controlled to 200 ⁇ 300kg/cm, and the surface temperature of the roll is 280 ⁇ 340° (:, the rolling speed is 3 ⁇ 30 m/min.
  • All-para-aramid fiber paper is prepared in the following proportions and used to make aramid honeycomb core board:
  • the present embodiment is to change the aramid fiber 1414 fiber and the fibrid fiber formula, and the weight of the aramid fiber 1414 is increased to 75 parts.
  • the synthetic fiber paper preparation and the honeycomb core plate method are carried out in the same manner as in the first embodiment. , the results obtained are shown in Table 2:
  • All-para-aramid fiber paper is prepared in the following proportions and used to make aramid honeycomb core sheets:
  • the present embodiment is to change the aramid fiber 1414 fiber and the fibrid fiber formula, and reduce the weight of the aramid fiber 1414 to 40 parts.
  • the synthetic fiber paper preparation and the honeycomb core plate method are the same as in the first preparation method of the first embodiment. , the results obtained are shown in Table 3.
  • All-para-aramid fiber paper is prepared in the following proportions and used to make aramid honeycomb core board - aramid 1414 fiber or 1414 pulp 65 parts
  • the present embodiment is to change the aramid fiber 1414 fiber and the fibrid fiber formula, and reduce the weight of the aramid fiber 1414 to 35 parts.
  • the synthetic fiber paper preparation and the honeycomb core plate method are the same as in the first preparation method of the first embodiment. , the results obtained are shown in Table 4.
  • All-para-aramid fiber paper is prepared in the following proportions and used to make aramid honeycomb core sheets:
  • Aramid 1414 fibrid 20 parts O For the example 1, this embodiment is to change the aramid 1414 fiber and fibrid formula, reduce the weight of the aramid 1414 fibrid to 20 parts, synthetic fiber paper preparation and honeycomb core board method The same preparation method as in Example 1 was carried out, and the results obtained are shown in Table 5.
  • Example 1 this embodiment does not change the weight fraction of the aramid fiber 1414, and the aramid 1414 pulp is substituted for the aramid 1414 fibrid.
  • the pulp is produced by short-cutting the 1414 aramid fiber and then beating it by a disc or paddle machine to microfibrillate the short fibers.
  • the synthetic fiber paper was prepared in the same manner as in Example 1, and the results obtained are shown in Table 6.
  • 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 matching ratio, the hot rolling process and the like, and the product type and specification which can meet the special requirements of the user can be made; A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention.

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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
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Description

一种芳纶蜂窝芯板
技术领域
本发明涉及蜂窝芯板领域， 具体涉及一种芳纶纸蜂窝芯板及其制备方法。 背景技术
随着科技的发展以及人们对产品要求越来越高， 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、 阻燃、 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， 专利号为 ZL99114635.2的中国专利中公开了一种以聚芳酰胺合 成纤维和聚酯纤维为原料制成的合成纤维纸， 具有一定的耐高温性、 高强度、 低变形等优点， 但因失重稍高， 且阻燃性尚不足， 还满足不了一些特殊用途； 另外申请号为 200410037774.8的中国专利中公开了一种以碳纤维芳纶纤维合成 纸的制造技术， 其在某些特殊性能上， 如不具备绝缘性能， 抗辐射能力还不尽 如人意。
中国专利申请号 200810134636.X涉及一种芳纶蜂窝芯原纸， 其粘接纤维为 间位芳纶（聚间苯二甲酰间苯二胺）沉析纤维以及聚酯纤维， 间位芳纶在 370°C 即会分解，而对位芳纶在 500°C以上才会分解，因而其耐受高温的性能不如 100% 对位芳纶制作的纸。
中国专利申请号 200510035261.8公开了全对位芳纶纸的制备方法， 但其粘 接纤维用的是对位芳纶浆粕。 浆粕是用短纤维经盘磨磨制， 使其短纤维微纤化 而成， 其粘和能力差， 制成的芳纶纸强度低。
作为以芳纶 1414短纤维为结构纤维的合成纤维纸， 粘结纤维的选择对于抄 造后的成纸性能至关重要， 在上述用芳纶 1414纤维生产合成纸的工艺中， 采用 聚酯或聚苯硫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。 另一个选择是以芳纶 1414纤 维的浆粕做粘接纤维，制成含纯对位芳纶纤维的合成纤维纸，浆粕通常是将 1414 芳纶纤维通过切断后， 再通过盘磨或打浆机， 使纤维原纤化步骤而制成， 成纸 强度差， 限制了芳纶纸的用途。
本发明综合了全对位芳纶纤维和全对位芳纶沉析纤维各自的优势， 制备了 一种将全对位芳纶纤维单一抄造， 并经过热轧的芳纶纤维纸， 将所述芳纶纤维 纸用于制造蜂窝芯板。 目前， 这种全对位芳纶蜂窝芯板在国内外还未见报道。 发明内容
本发明的一个目的在于提供一种由全对位芳纶纤维纸制备而成的芳纶蜂窝 芯板， 所述芳纶蜂窝芯板具有非常优异的压缩模量和剪切模量的强度效果。
为了达到上述目的， 本发明的技术方案为：
一种芳纶蜂窝芯板， 由全对位芳纶纤维纸制备而成， 其特征在于， 所述全 对位芳纶纤维纸由下述纤维制成：
结构纤维 20〜75%重量份
粘接纤维 25〜80%重量份
其中， 所述结构纤维为聚对苯二甲酰对苯二胺纤维；
所述粘结纤维为聚对苯二甲酰对苯二胺沉析纤维；
且所述全对位芳纶纤维合成纸是通过造纸机， 湿法抄造成形而制得； 以 及将所述全对位芳纶纤维合成纸经涂胶、 叠合、 压制、 拉伸、 定型、 浸胶、 固 化、 分切制备成芳纶蜂窝芯板。
优选地， 所述全对位芳纶纤维纸由下述纤维制成：
结构纤维 20〜65%重量份
粘接纤维 35〜80%重量份
其中， 所述结构纤维为聚对苯二甲酰对苯二胺纤维；
所述粘结纤维为聚对苯二甲酰对苯二胺沉析纤维；
且所述全对位芳纶纤维合成纸是通过造纸机， 湿法抄造成形而制得。 更优选地， 所述全对位芳纶纤维纸由下述纤维制成：
结构纤维 35〜60%重量份
粘接纤维 40〜65%重量份
其中， 所述结构纤维为聚对苯二甲酰对苯二胺纤维； 所述粘结纤维为聚 对苯二甲酰对苯二胺沉析纤维； 且所述全对位芳纶纤维合成纸是通过造纸机， 湿法抄造成形而制得。 具体地， 上述全对位芳纶纤维纸由下述步骤制备而成：
1 ) 将全对位芳纶纤维按 0.5〜5%重量浓度疏解， 制得浆液 A;
2) 将沉析纤维按 0.05〜3%重量浓度疏解， 制得浆液 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；
5 ) 干燥并预热；
6) 高温热轧。
进一步地， 上述步骤 6)中热轧线压力为 200〜300kg/cm、 轧辊表面温度为 280〜340。C、 轧速为 3〜30米 /分钟。
更进一步地， 上述步骤 2)中沉析纤维的打桨度为 25-75°SR。
更进一步地， 上述结构纤维为全对位芳纶短切纤维和 /或全对位芳纶浆粕， 维纤度为 l〜2 d、 纤维长度为 0.5〜8 mm。
更进一步地， 上述结构纤维为全对位芳纶短切纤维和 /或全对位芳纶桨粕， 维纤度为 l〜2 d、 纤维长度为 1.5〜8mm。
由合成纤维纸制备芳纶蜂窝芯板包括下述步骤：
1) 将全对位芳纶纤维纸在涂胶机上涂胶；
2) 将已涂芯条胶的全对位芳纶纤维纸供干， 按所需尺寸裁片， 叠合；
3) 将已叠合的全对位芳纶纤维纸在压机上加温加压， 制成蜂窝块；
4) 在拉伸机上将经过压制的蜂窝块拉开至要求的孔格尺寸， 用固定支架固 定好以免回缩；
5) 将拉伸好的蜂窝块放在浸胶槽中充分浸胶；
6) 将已浸胶的蜂窝块用热风烘干定型；
7) 将烘干定型的蜂窝块放入烘房固化；
8) 根据需要的厚度， 在片切机上把固化后的蜂窝块片切成所需的成品。 优选地， 上述的制备方法包括下述步骤：
1) 将全对位芳纶纤维纸在涂胶机上涂胶；
2) 将已涂芯条胶的全对位芳纶纤维纸在 100-120°C下烘干， 按所需尺寸裁 片， 叠合；
3) 将已叠合的全对位芳纶纤维纸全对位芳纶纤维纸在压机上加温加压， 制 成蜂窝块； 其中压力为 5-7kg/cm2， 温度为 120°C或 180° (：， 压制时间为 6- 12小时；
4) 在拉伸机上将经过压制的蜂窝块拉开至要求的孔格尺寸， 用固定支架 定好以免回缩；
5) 将拉伸好的蜂窝块放在浸胶槽中充分浸胶 4-8小时，其中所述胶为环氧树 脂和酚醛树脂的混合物；
6) 将已浸胶的蜂窝块用 120°C的热风烘干定型；
7) 将烘干定型的蜂窝块放入烘房在 180°C下固化 4-8小时；
8) 根据需要的厚度， 在片切机上把固化后的蜂窝块片切成所需的成品。 本发明所述的全对位芳纶纤维， 化学名称为聚对苯二甲酰对苯二胺 polyterephthaloyl-p-phenylenediamine fibre; 或芳给 1414 ( Fanglun 1414)， 英文 名称简称 PPTA)。
本发明所述的粘结纤维为对位芳纶沉析纤维。 对位沉析纤维的制备是将一 定粘度的聚对苯二甲酰胺树脂输送至沉析机中， 利用可控的凝固组合物使聚合 物凝固， 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， 得到全对位沉析纤维桨料。 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键能。 制得的对位沉析纤 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， 全对位沉析纤维在高温、 高 压的作用下， 这种强度得到了更加充分地提高。 可以认为， 本发明控制的沉析 纤维打浆度25〜75。81。
特别地， 全对位芳纶纤维纸的强度、 紧度、 渗透性能， 将直接影响纸蜂窝 芯的制造。 纸强度低， 达不到机械加工要求； 紧度低， 渗透性大， 在芯条胶工 艺中， 胶料易渗透到纸背面， 白蜂窝牵伸不开； 紧度高， 渗透性低， 又达不到 定型胶的施胶效果。
本发明通过用全对位芳纶纤维纸制造出的全对位芳纶蜂窝芯板， 具有非常 高的抗压縮模量和抗剪切模量， 可广泛用于航空航天、 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。 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。 具体实施方式 在对实施例中用于制备芳纶蜂窝芯板的、 全对位芳纶纤维纸的性能进行检 测时， 使用下列检测方法：
定量 GB/T 451.3— 2002
厚度 GB/T 451.3— 2002
紧度 GB/T 451.3— 2002
抗张强度 GB/T 453― 2002
伸长率 GB/T 453— 2002
撕裂强度 GB/T 455― 2002
材料来源：
芳纶 1414纤维： 聚对苯二甲酰对苯二胺纤维， 日本帝人公司生产， 商品名： twaron®1080
芳纶 1414沉析纤维： 聚对苯二甲酰对苯二胺沉析纤维。 日本帝人公司生产， 商品名： twaron®8016
芳纶 1414浆粕 （型号 1094) ： 聚对苯二甲酰对苯二胺浆粕， 日本帝人公司 生产， 商品名： twaron®1094
【实施例 1】
按下述比例配制全对位芳纶纤维纸， 并用于制成芳纶蜂窝芯板：
芳纶 1414纤维或 1414浆粕 35重量份 （以下称 "份" ） 芳纶 1414沉析纤维 65份
将上述含量芳纶 1414纤维， 按 1%重量浓度在水力疏解机中疏解制成纸浆 A， 另将 1414沉析纤维按 2%浓度在水力碎浆机中疏解， 并经过磨打浆， 控制打浆度 约 75°SR， 制成浆液8。 将桨液 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， 在流浆箱中桨液被均匀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， 控制热轧线压力为 200〜300kg/cm、 轧 辊表面温度为 280〜340° (：、 轧速为 3〜30米 /分钟。 热轧后的纸， 再经过压光机整 饰， 控制温度 170〜190°C。 然后将所述全对位芳纶纤维合成纸经涂胶、 叠合、 压制、 拉伸、 定型、 浸胶、 固化、 分切制备成芳纶蜂窝芯板。 得到的结果见表 1 : 按下述比例配制全对位芳纶纤维纸， 并用于制成芳纶蜂窝芯板：
芳纶 1414纤维或 1414浆粕 65份
芳纶 1414沉析纤维 35份
表 1 纤维纸及蜂窝芯板的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 42.8
厚 度 mm 0.049
紧 度 g/cm3 0.87
抗张强度 KN/m MD 1.62
1414沉析纤维 1414纤维 平压强度 剪切强度 Mpa 剪切模量 Mpa
% % Mpa L W L W
Figure imgf000007_0001
【实施例 2】
按下述比例配制本实施例 2纤维纸：
芳纶 1414纤维或 1414浆粕 25份
芳纶 1414沉析纤维 75份
针对实施例 1， 本实施是改变芳纶 1414纤维和沉析纤维配方， 将芳纶 1414 沉析纤维重量增加到 75份， 合成纤维纸制备和蜂窝芯板方法按实施例 1相同的 制备方法进行， 得到的结果见表 2:
表 2 纤维纸及蜂窝芯板的物理机械性能
项 单 位 测试结果
定 里 g/m2 43.1
厚 度 mm 0.050 紧 度 g/cm3 0.86
抗张强度 KN/m MD 1.45
1414沉析纤维 1414纤维 平压强度 剪切强度 Mpa 剪切模量 Mpa % % Mpa L W L W
75 25 1.12 0.62 0.40 27.40 23.60
【实施例 3】
按下述比例配制全对位芳纶纤维纸， 并用于制成芳纶蜂窝芯板：
芳纶 1414纤维或 1414浆粕 60份
芳纶 1414沉析纤维 40份
针对实施例 1， 本实施是改变芳纶 1414纤维和沉析纤维配方， 将芳纶 1414 沉析纤维重量减少到 40份， 合成纤维纸制备和蜂窝芯板方法按实施例 1相同的 制备方法进行， 得到的结果见表 3
表 3 纤维纸及蜂窝芯板的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 43.4
厚 度 mm 0.051
紧 度 g/cm3 0.85
抗张强度 KN/m MD 1.38
1414沉析纤维 1414纤维 平压强度 剪切强度 Mpa 剪切模量 Mpa
% % Mpa L W L W
40 60 0.77 0.56 0.33 26.30 15.20 【实施例 4】
按下述比例配制全对位芳纶纤维纸， 并用于制成芳纶蜂窝芯板- 芳纶 1414纤维或 1414浆粕 65份
芳纶 1414沉析纤维 35份 针对实施例 1， 本实施是改变芳纶 1414纤维和沉析纤维配方， 将芳纶 1414 沉析纤维重量减少到 35份， 合成纤维纸制备和蜂窝芯板方法按实施例 1相同的 制备方法进行， 得到的结果见表 4
表 4 纤维纸及蜂窝芯板的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 42.8
厚 度 mm 0.049
紧 度 g/cm3 0.87
抗张强度 KN/m MD 1.32
O
1414沉析纤维 1414纤维 平压强度 剪切强度 Mpa 剪切模量 Mpa
O
% % Mpa L W L W 卜
35 65 0.70
【实施例 5】
O
按下述比例配制全对位芳纶纤维纸， 并用于制成芳纶蜂窝芯板：
芳纶 1414纤维或 1414浆粕 80份
芳纶 1414沉析纤维 20份 O 针对实施例 1， 本实施是改变芳纶 1414纤维和沉析纤维配方， 将芳纶 1414 沉析纤维重量减少到 20份， 合成纤维纸制备和蜂窝芯板方法按实施例 1相同的 制备方法进行， 得到的结果见表 5
表 5 纤维纸及蜂窝芯板的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 42.4
) - 1又 mm 0.048
糸 J g/cm 0.88
抗张强度 KN/m MD 1.18 1414沉析纤维 1414纤维 平压强度 剪切强度 Mpa 剪切模量 Mpa
% % Mpa L W L W
20 80 0. 66 0. 50 0. 25 21. 2 11. 1
【实施例 6】
按下述比例配制全对位芳纶纤维纸：
芳纶 1414纤维 35份
芳纶 1414浆粕 65份
针对实施例 1， 本实施是不改变芳纶 1414纤维重量份， 将芳纶 1414浆粕代 替芳纶 1414沉析纤维。 浆粕的制造是将 1414芳纶纤维短切后， 再通过盘磨或 打桨机对其打浆， 使其短纤维微纤化而成。 合成纤维纸的制备方法与实施例 1 相同， 得到的结果见表 6。
表 6纤维纸的物理机械性能
项 目 单 位 测试结果
定 量 g/m2 44
厚 度 mm 0.052
紧 度 g/cm3 0.85
抗张强度 KN/m D 0.88
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以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、 一种芳纶蜂窝芯板， 由全对位芳纶纤维纸制备而成， 其特征在于， 所述 全对位芳纶纤维纸由下述纤维制成：
结构纤维 20〜75%重量份
粘接纤维 25〜80%重量份
其中， 所述结构纤维为聚对苯二甲酰对苯二胺纤维；
所述粘结纤维为聚对苯二甲酰对苯二胺沉析纤维；
且所述全对位芳纶纤维合成纸是通过造纸机， 湿法抄造成形而制得； 以 及将所述全对位芳纶纤维合成纸经涂胶、 叠合、 压制、 拉伸、 定型、 浸胶、 固 化、 分切制备成芳纶蜂窝芯板。
2、 如权利要求 1所述的芳纶蜂窝芯板， 其特征在于， 所述全对位芳纶纤维 纸由下述纤维制成：
结构纤维 20〜65%重量份
粘接纤维 35〜80%重量份
其中， 所述结构纤维为聚对苯二甲酰对苯二胺纤维;
所述粘结纤维为聚对苯二甲酰对苯二胺沉析纤维；
且所述全对位芳纶纤维合成纸是通过造纸机， 湿法抄造成形而制得。
3、 如权利要求 2所述的芳纶蜂窝芯板， 其特征在于， 所述全对位芳纶纤维 纸由下述纤维制成：
结构纤维 35〜60%重量份
粘接纤维 40〜65%重量份
其中， 所述结构纤维为聚对苯二甲酰对苯二胺纤维；
所述粘结纤维为聚对苯二甲酰对苯二胺沉析纤维；
且所述全对位芳纶纤维合成纸是通过造纸机， 湿法抄造成形而制得。
4、 如权利要求 1所述的芳纶蜂窝芯板， 其特征在于， 所述全对位芳纶纤维 合成纸由下述步骤制备而成：
1 ) 将全对位芳纶纤维按 0.5〜5 /。重量浓度疏解， 制得浆液 A;
2 ) 将沉析纤维按 0.05〜3%重量浓度疏解， 制得桨液 B， 所述沉析纤维的 打浆度为 25-75。SR;
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；
5 ) 干燥并预热；
6) 高温热轧， 线压力为 200〜300kg/cm、 轧辊表面温度为 280〜340°C、 轧速为 3〜30米 /分钟。
5、如权利要求 1-4任一项所述的芳纶蜂窝芯板， 其特征在于， 所述结构纤维 为全对位芳纶短切纤维和 /或全对位芳纶浆粕， 维纤粗度为 1〜2 d、 纤维长度为 0.5〜8 mm。
6、 如权利要求 5所述的芳纶蜂窝芯板， 其特征在于， 所述结构纤维为全对 位芳纶短切纤维和 /或全对位芳纶浆粕，维纤度为 l〜2 d、纤维长度为 1.5〜8mm。
7、 权利要求 1所述的芳纶蜂窝芯板， 其中将全对位芳纶纤维纸制备成芳纶 蜂窝芯板包括下述步骤：
1) 将全对位芳纶纤维纸涂胶；
2) 将已涂胶的全对位芳纶纤维纸烘干， 按所需尺寸裁片， 叠合；
3) 将已叠合的全对位芳纶纤维纸加温加压， 制成蜂窝块；
4)在拉伸机上将经过压制的蜂窝块拉伸至要求的孔格尺寸， 用固定支架固 定；
5) 将拉伸好的蜂窝块放在浸胶槽中充分浸胶；
6) 将己浸胶的蜂窝块用热风烘干定型；
7) 将烘干定型的蜂窝块固化；
8) 根据需要的厚度， 在片切机上把固化后的蜂窝块片切成所需的成品。
8、 如权利要求 7所述的芳纶蜂窝芯板， 其特征在于， 包括下述步骤：
1) 将全对位芳纶纤维纸涂胶；
2)将已涂芯条胶的全对位芳纶纤维纸在 100-120°C下供干，按所需尺寸裁片， 叠合；
3) 将已叠合的全对位芳纶纤维纸在压机上加温加压， 制成蜂窝块； 其中压 力为 5-7kg cm2， 温度为 120°C或 180°C， 压制时间为 6-12小时；
4) 在拉伸机上将经过压制的蜂窝块拉开至要求的孔格尺寸， 用固定支架 定好以免回缩；
5)将拉伸好的蜂窝块放在浸胶槽中充分浸胶 4-8小时， 其中所述胶为环氧树 脂和酚醛树脂的混合物； 6) 将己浸胶的蜂窝块用 120°C的热风烘干定型；
7) 将烘干定型的蜂窝块放入烘房在 180°C下固化 4-8小时；
8) 根据需要的厚度， 在片切机上把固化后的蜂窝块片切成所需的成
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CN102864677A (zh) * 2012-09-27 2013-01-09 陕西科技大学 一种对位芳纶纸及其制备方法
CN103101229A (zh) * 2012-11-14 2013-05-15 合肥朗胜新材料有限公司 一种以石头纸制作蜂窝纸板的方法
CN103952947A (zh) * 2014-04-23 2014-07-30 华南理工大学 一种芳纶纸及其制备方法
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