CN1008109B - 膨胀石墨通用盘根及制造方法 - Google Patents

膨胀石墨通用盘根及制造方法

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Publication number
CN1008109B
CN1008109B CN87106668.8A CN87106668A CN1008109B CN 1008109 B CN1008109 B CN 1008109B CN 87106668 A CN87106668 A CN 87106668A CN 1008109 B CN1008109 B CN 1008109B
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Prior art keywords
expanded graphite
packing
subsidiary material
universal
universal packing
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Expired
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CN87106668.8A
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CN1034217A (zh
Inventor
朱迪祥
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Zhejiang CI XI Seal Material Factory
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Zhejiang CI XI Seal Material Factory
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Application filed by Zhejiang CI XI Seal Material Factory filed Critical Zhejiang CI XI Seal Material Factory
Priority to CN87106668.8A priority Critical patent/CN1008109B/zh
Priority to CA000578425A priority patent/CA1338151C/en
Priority to US90/002651A priority patent/US4961988B1/en
Publication of CN1034217A publication Critical patent/CN1034217A/zh
Publication of CN1008109B publication Critical patent/CN1008109B/zh
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/20—Packing materials therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/102—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by material
    • 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3472—Woven fabric including an additional woven fabric layer
    • Y10T442/3602—Three or more distinct layers
    • Y10T442/3699—Including particulate material other than fiber

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Material Composition (AREA)
  • Gasket Seals (AREA)
  • Sealing Devices (AREA)

Abstract

本发明涉及的是增强膨胀石墨通用盘根及该通用盘根的制造方法。
本发明的膨胀石墨通用盘根在石墨蠕虫层中复衬网状或膜状的有机或无机辅助增强材料，采用机械压合或粘接剂使厚、辅材料紧密结合。制成膨胀石墨带，然后裁切或直接卷制，单股或多股拧合成线、绳，或卷制成棒状、筒状。经机械轧制成所需截面形状，尺寸的通用盘根。按本发明制造方法制成的通用盘根，机械强度高，柔韧性好，可以适合多种密封要求。

Description

本发明涉及一种流体介质的密封材料，尤其是一种膨胀石墨通用盘根以及该通用盘根的制造方法。
日本专利昭57～29854《膨胀石墨成形体利用复合编织的盘根》中提到：“是以天然磷片石墨，初生石墨，热分解石墨等用强酸处理使之生成石墨层间化合物，再水洗，于高温瞬间膨胀处理得到的膨胀石墨粒子加压而成为膨胀石墨成形体”。因为该石墨成形体主要是由膨胀石墨粒子间的机械力结合而成，因而强度不高、封用度低，使用受到限制。该专利文献昭57～29854还提到：“在管状编织体内部充填以膨胀石墨成形体的复合编织盘根。该管状编织体是自上而下的由石棉或碳素纤维进行格子编、套编、袋编而成，然后将膨胀石墨成形体卷做成圆筒状或切成一定宽度的带状、或者切成木屑或木片状之后填塞于上述管状编织体的中空部，做成复合编织盘根”。按上述方法制成的膨胀石墨复合编织盘根，由于管状编织体与膨胀石墨成形体之间无粘接增强，且膨胀石墨材料本身的机械强度低、因而编织体一旦破损，就会导致盘根失效，耐用度较低，且产品的通用性较差，给生产及使用以至于运输和储存都带来不便。
本发明的任务是克服现有技术中所存在的上述不足，而提供一种机械强度高，产品通用性强的膨胀石墨通用盘根，以达到盘根密封性能好，使用寿命长的目的;本发明的另一任务是提供专用于制造该通用盘根的生产方法，以达到制造方便，成本低的目的。
本发明提出的任务是由下列技术方案来完成的。本发明以膨胀石墨或者在膨胀石墨中漆加少量氧化石墨，胶质石墨及其它助粘接增强剂为原料。以一种或数种金属丝、网、箔或天然纤维、人工合成纤维的线或织物，以及高分子化合物薄膜作为增强辅助材料，原、辅材料之间通过机械压合或粘接剂使之结合，制成膨胀石墨纸、带、线，将上述制得的膨胀石墨带状物经螺旋卷制、单股或多股拧合或于中心加以增加强度的柔软的金属丝或非金属纤维，通过一定形状的模口挤压或辊轧成各种截面形状，尺寸的膨胀石墨通用盘根。或者将上述的膨胀石墨带状物裁切后拧捻成一定直径的膨胀石墨细线，再经套编、重复编、格子编、穿心编等编织加工而成具有良好柔韧性的无限长度的膨胀石墨通用盘根。
本发明将通过实施例进行详细地说明。
实施例一：膨胀石墨通用盘根是以天然磷片石墨或粉末石墨为原料，经强酸性氧化处理使之成为石墨层间化合物后，水洗干燥再高温瞬间膨胀成石 墨蠕虫。取0.02～0.06mm厚的有机合成薄膜，表面浸渍与之适应的有机类粘接剂，一般是采用连续浸渍，即用罗拉牵引薄膜通过盛有粘接剂的槽。并经适度的加热干燥，薄膜感热温度控制在20～100℃。再夹于密度0.003～0.03g/cm3的石墨蠕虫层之中，然后进行机械辊压，一般压合压力控制在70～150kg/cm2，制成总厚度控制在0.10～0.30mm、密度0.5～1.5g/cm3的增强膨胀石墨带。将此石墨带卷制成一定长度的筒状或棒状，再经挤压或辊压整形加工，施加压力为120～180kg/cm2，制成一定截面形状，尺寸的增强膨胀石墨通用盘根。卷制时也可以多层迭合，并于中心铺设铜、铁、锡、铝等金属丝、玻璃纤维或合成纤维，棉、麻类纤维当中的任意一种或数种经浸胶处理过的线或织物作为增强辅助材料，以增强盘根的内部结合力及耐折强度，此法生产的通用盘根可用于直径较大的以及异型密封部位的密封。
实施例二：按上述方法制得的增强膨胀石墨带裁切成5～50mm宽度窄带，经拧捻制成石墨线，根据石墨线股数可随意调节盘根的截面大小，或在拧捻时嵌入浸胶过的增强材料，再经与之相配的模口整形加工，表面处理后可得到无限长度的增强膨胀石墨通用盘根。按上述方法生产的通用盘根具有优异的柔韧性，可以在180°范围内任意弯折，适用于各类口径的动静密封，包括异型部位的密封均可使用。
实施例三：取玻璃纤维或合成纤维、棉、麻类纤维、碳素纤维或铜丝的一种织物或混合织物，厚度控制在0.20mm以下，浸渍与金属丝或纤维相适应的有机类粘接剂后均匀地夹于密度0.003～0.03g/cm3的膨胀石墨蠕虫层中间，辊压成厚度为0.15～0.35mm，密度0.5～1.8g/cm3的石墨带。依一定宽度一般为5～50mm裁切成窄条，再经搓捻制成石墨线，于穿心编织机上进行穿心编织，或内夹石墨绳的套编及多次重复编织，再经整形和表面处理得到不同截面形状、尺寸的无限长度的增强膨胀石墨通用盘根。此类盘根强度高，尺寸稳定性好，能在180℃范围内任意弯折、适用各类口径的动静密封，特别对PV值较高或流体介质中有固态物的动密封具有独特的效果。安装时只要施加原膨胀石墨填料环75%的予紧力就能达到密封，使用寿命至少延长一倍以上。本发明实施例中，辅助增强材料与粘接剂的选择比较灵活，原则上是粘接剂与原、辅材料之间都具有一定的粘接力即可，通常采用的有机类粘接剂为丁晴、氯丁、醋酸乙稀脂类。
本发明与现有技术相比，具有下列优点：由于在膨胀石墨中增加了少量的膜状或织物状的增强辅助材料，并采用机械压合或粘结剂粘合，使原、辅材料结合在一起。膨胀石墨通用盘根的机械强度和柔韧性显著提高、使用寿命延长，同时使用本发明所述的制造方法，不仅改善了加工性能使之成为连续生产，容易获得不同截面形状尺寸的通用盘根，可以解决大口径及异型孔等的动静密封;而且各种不同规格型号的膨胀石墨填料盘根，可以简化为若干种不同截面尺寸、形状的通用盘根，用户可以根据密封需要随意截取，缠绕在密封部位加压即可形成密封，给运输、储存及用户安装带来了极大的方便，同时生产成本比原来降低，因而本发明所具有的社会效益和经济效益都是比较明显的。

Claims (6)

1、一种膨胀石墨盘根，以膨胀石墨为原料，并含有用于增加强度的辅助材料，其特征在于：用于增强的辅助材料为线状或织物状的纤维或有机合成薄膜，在该辅助材料的表面浸渍有与原辅材料都适应的有机类粘接剂丁晴、氯丁、醋酸乙稀脂的一种，并且该辅助材料是均匀压合在膨胀石墨蠕虫层间。
2、如权利要求1所述的膨胀石墨盘根，其特征在于：所述的膨胀石墨带、线经卷制，拧捻或编织制成表里结构与成分致密等同的索状膨胀石墨盘根。
3、如权利要求1所述的膨胀石墨盘根，其特征在于：所述的线状或织物状纤维为棉麻类纤维或合成纤维当中的任意一种，且厚度控制在0.2mm以下。
4、一种制造权利要求1所述膨胀石墨盘根的方法，膨胀石墨蠕虫可用机械压制成带状、并卷制成筒状，其特征在于：在机械压制成形前，先在线状、膜状或织物状的增强辅助材料上浸渍与原辅助材料都适应的有机类粘接剂，在温度为20℃～100℃条件下进行干燥，然后将膨胀石墨蠕虫层均匀地覆盖在辅助材料的表面，在0.7～150kg/cm2的压力下进行机械压合成带，并经裁切卷制、拧合，然后在120～180kg/cm2压力下进行挤压或辊压模口整形加工，制成不同截面形状、尺寸的表里材质一致的通用盘根。
5、如权利要求4所述的膨胀石墨盘根的制造方法，其特征在于：可以在制成膨胀石墨带以后，裁切成5～50mm宽度的窄带，并搓捻成线，再进行穿心编织或内夹石墨绳的套编及多次重复编织，最后经整形和表面处理得到所需截面形状、尺寸的通用盘根。
6、如权利要求4所述的膨胀石墨盘根的制造方法，其特征在于：用于粘接膨胀石墨蠕虫层的线状、膜状或织物状的辅助材料，采用罗拉牵引通过贮有粘接剂槽的方式连续浸渍上胶。
CN87106668.8A 1987-09-28 1987-09-28 膨胀石墨通用盘根及制造方法 Expired CN1008109B (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN87106668.8A CN1008109B (zh) 1987-09-28 1987-09-28 膨胀石墨通用盘根及制造方法
CA000578425A CA1338151C (en) 1987-09-28 1988-09-26 General packing of expanded graphite and process for production thereof
US90/002651A US4961988B1 (en) 1987-09-28 1988-09-27 General packing of expanded graphite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN87106668.8A CN1008109B (zh) 1987-09-28 1987-09-28 膨胀石墨通用盘根及制造方法

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Publication Number Publication Date
CN1034217A CN1034217A (zh) 1989-07-26
CN1008109B true CN1008109B (zh) 1990-05-23

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CN87106668.8A Expired CN1008109B (zh) 1987-09-28 1987-09-28 膨胀石墨通用盘根及制造方法

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US (1) US4961988B1 (zh)
CN (1) CN1008109B (zh)
CA (1) CA1338151C (zh)

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CN108316017B (zh) * 2018-03-19 2020-09-01 山东省圣泉生物质石墨烯研究院 一种制备盘根的第一浸渍液、使用其制备的盘根和制备方法
CN113527904A (zh) * 2020-04-15 2021-10-22 罗永康 一种油井密封盘根及其制备方法
CN111662678B (zh) * 2020-06-12 2023-07-21 上海弘枫实业有限公司 一种高温抗氧化柔性石墨填料及制备方法、高温抗氧化柔性石墨盘根

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