WO2016029526A1 - 芳纶纤维光缆加强芯连续生产方法 - Google Patents

芳纶纤维光缆加强芯连续生产方法 Download PDF

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WO2016029526A1
WO2016029526A1 PCT/CN2014/087778 CN2014087778W WO2016029526A1 WO 2016029526 A1 WO2016029526 A1 WO 2016029526A1 CN 2014087778 W CN2014087778 W CN 2014087778W WO 2016029526 A1 WO2016029526 A1 WO 2016029526A1
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aramid fiber
continuously producing
production
agent
mold
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PCT/CN2014/087778
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English (en)
French (fr)
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张亚
任华
曹婷婷
仇叶云
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海安南京大学高新技术研究院
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/525—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/70—Maintenance
    • B29C33/72—Cleaning
    • B29C2033/727—Cleaning cleaning during moulding

Definitions

  • the invention relates to the technical field of loop optical cables, in particular to a continuous production method of aramid fiber optical cable reinforcing core.
  • FTTH fiber-to-the-home
  • a first object of the present invention is to provide a continuous production method of an aramid fiber reinforced composite optical cable reinforced core.
  • a second object of the present invention is to provide a solution for reducing the tension of a cable reinforcing core in the two above-described production methods.
  • the present invention adopts the following technical solution: preheating of the fiber: preheating the aramid fiber through the heated drying tunnel, which is beneficial to reducing the internal stress of the fiber.
  • the fibers are made soft and better bonded to the glue.
  • the fiber is passed through a glue which is uniformly mixed with an unsaturated resin, a curing agent, a mold release agent, a filler, and a coupling agent in advance.
  • Molding and Curing The fibers coated with the uniform glue are passed through a heated mold at a uniform rate to form and partially cure.
  • Post-cure treatment The formed and partially cured cable reinforcing core is post-cured by a heated drying tunnel to completely cure, and the internal stress of the reinforcing core is eliminated, and the bonding strength is improved.
  • Tension monitoring The cured cable reinforcement core is passed through the tension sensor system to obtain real-time tension during production to prevent jamming.
  • the cable reinforcement core is wound up at a uniform speed by means of a traction device.
  • the inner wall of the mold will have accumulated resin accumulation, which can be displayed by the tension sensor system, the tensile tension becomes large, and the mold is easily blocked.
  • the fiber optic cable is reinforced by the core, and the inner wall of the mold is cleaned by a solvent method or a sanding method to reduce the production tension and prevent the mold from being blocked.
  • the solvent method is to uniformly coat the solvent methyl isobutyl ketone on the aramid fiber with the glue glued in front of the mold, and bring the solvent into the mold to clean the inner wall of the mold, remove the resin accumulated on the inner wall, and reduce the cable. Strengthen the friction between the core and the mold to reduce the tensile tension and prevent the occurrence of jamming.
  • the sanding method is that a suspension obtained by uniformly mixing styrene and a filler is coated on the aramid fiber to which the glue is adhered before the mold, and the suspension is brought into the mold to the inner wall of the mold. Friction is performed to remove the resin solidified on the inner wall of the mold, thereby reducing the tensile tension and preventing the occurrence of jamming.
  • the invention has the following beneficial effects: preventing the occurrence of jamming in the production process of the invention, achieving continuous long-time production, reducing production cost, improving production efficiency, and the long-distance reinforcing core is more conducive to the production of the optical cable.
  • Figure 1 is a structural view of aramid fiber reinforced composite optical cable reinforced core production equipment.
  • Figure 2 is a structural diagram of a tension sensor system.
  • the invention provides a continuous production method of an aramid fiber reinforced composite optical fiber cable reinforcing core, wherein the glue liquid is added by weight: 2 parts of medium temperature curing agent per 100 parts of unsaturated resin, 1.5 parts of high temperature curing agent, and 1.5 parts of releasing agent Parts, 0.6 parts of a silane coupling agent, and 4 parts of a filler.
  • the continuous production method of the aramid fiber reinforced composite optical cable reinforcing core comprises the following steps:
  • the aramid fiber yarn 1 is preheated by heating the tunnel 2 heated to 80 ° C to soften the fiber and increase the degree of the dipping.
  • the fully immersed aramid fiber yarn was passed through a mold 3 heated to 170 ° C to be molded and initially cured.
  • the pre-cured cable reinforcing core is post-cured by a drying tunnel 4 heated to 240 ° C to completely cure, thereby improving the bonding strength and improving the toughness of the reinforcing core.
  • the cable reinforcing core 10 passes through the fixed pulley 8 and the tension sensor idler 9, and then the tension is read by the reader 11 at this time, and the production process is monitored in real time to determine whether the blocking mode is about to occur. .
  • the final roller device 6 and the winding device 7 wind the cable reinforcing core 10 evenly.
  • the glue liquid is added in parts by weight: 1.5 parts of a medium temperature curing agent, 1.0 part of a high temperature curing agent, 1.0 part of a releasing agent, 0.3 parts of a silane coupling agent, and 3.0 parts of a filler per 100 parts of the unsaturated resin.
  • the rest of the production steps or process conditions are the same.
  • the glue liquid is added in parts by weight: 2.5 parts of a medium temperature curing agent, 2.0 parts of a high temperature curing agent, 2.0 parts of a releasing agent, 0.8 parts of a silane coupling agent, and 5.0 parts of a filler per 100 parts of the unsaturated resin.
  • the rest of the production steps or process conditions are the same.
  • the inner wall of the mold is cleaned by solvent method or sanding method, that is, the solvent or the sanding liquid is evenly coated on the mold.
  • solvent method or sanding method that is, the solvent or the sanding liquid is evenly coated on the mold.
  • the inner wall of the mold is cleaned by solvent method or sanding method, that is, the solvent or the sanding liquid is evenly coated on the mold.
  • the aramid fiber yarn with the glue glued on the front clean the inner wall of the mold to keep it smooth to reduce the tensile tension and prevent the aramid light.
  • the cable reinforced core breaks, thereby achieving continuous production of the aramid cable reinforcing core.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Ropes Or Cables (AREA)

Abstract

提供芳纶纤维增强复合材料光缆加强芯连续生产方法，属于光纤技术领域。该生产方法为：将芳纶纤维进行预热，然后通过由不饱和树脂、固化剂、脱模剂、填料、偶联剂均匀混合的胶液，经由模具成型固化，再通过后固化处理，经过张力传感器***，最后通过压辊装置进行牵引并收卷成品。具有以下有益效果：生产过程中防止堵模情况的发生，做到连续长时间生产，降低生产成本，提高生产效率，并且长距离的加强芯更加利于光缆的生产。

Description

一种芳纶纤维光缆加强芯连续生产方法 技术领域
本发明涉及环光缆技术领域，特别涉及一种芳纶纤维光缆加强芯连续生产方法。
背景技术
随着光通信的发展，光纤入户(FTTH)已经越来越普及，光缆增强芯的应用也随之越来越得到推广。
目前市场上生产芳纶光缆加强芯的厂家较多，工艺也渐渐趋于成熟，拉挤速度上有了极大的提升，但随之而来的问题也逐渐体现出来，长时间的快速拉挤易造成堵模现象的发生。堵模造成的芳纶光缆加强芯生产过程中的断裂已产生产品合格率下降，资源浪费，成本增加等现象的发生。而在光缆生产过程中，长距离的加强芯是光缆生产效率的保障。鉴于上述这种情况，目前急需对现有芳纶光缆加强芯生产方法进行改进。
发明内容
本发明的第一目的是提供一种芳纶纤维增强复合材料光缆加强芯连续生产方法。
本发明的第二目的是提供两种上述生产方法中减小光缆加强芯张力的方案。
为了实现上述目的，本发明采用如下技术方案：纤维的预热：将芳纶纤维通过加热的烘道进行预热，有利于降低纤维的内应力， 使纤维变得柔软，与胶液更好地结合。
浸料：将纤维通过事先由不饱和树脂、固化剂、脱模剂、填料、偶联剂均匀混合好的胶液。
成型和固化：将涂有均匀胶液的纤维匀速通过加热的模具，进行成型并部分固化。
后固化处理：将成型并部分固化的光缆加强芯通过加热的烘道进行后固化处理，使其完全固化，并消除加强芯的内应力，提高胶接强度。
张力监测：将固化好的光缆加强芯通过张力传感器***，得到生产中的实时张力，以防止堵模现象的发生。
牵引和收卷：通过牵引装置将光缆加强芯以均匀的速度收卷。
实现本发明第二目的技术方案为：
在芳纶纤维增强复合材料光缆加强芯生产过程中，随着拉挤时间的增加，模具内壁会有固化的树脂积累，通过张力传感器***可以显示，拉伸张力变大，易导致堵模，芳纶光缆加强芯断裂，采取溶剂法或磨砂法清理模具内壁，以降低生产张力，防止堵模。
所述的溶剂法就是将溶剂甲基异丁基甲酮均匀涂覆在模具前粘有胶液的芳纶纤维上，将溶剂带入模具中对模具内壁进行清洗，除去内壁上积累的树脂，降低光缆加强芯与模具之间的摩擦力，从而减小拉伸张力，防止堵模现象的发生。
所述的磨砂法就是将苯乙烯和填料均匀混合得到的悬浊液涂覆在模具前粘有胶液的芳纶纤维上，将悬浊液带入模具中对模具内壁 进行摩擦，除去模具内壁固化的树脂，从而减小拉伸张力，防止堵模现象的发生。
本发明具有以下有益效果：本发明生产过程中防止堵模情况的发生，做到连续长时间生产，降低生产成本，提高生产效率，并且长距离的加强芯更加利于光缆的生产。
附图说明
图1为芳纶纤维增强复合材料光缆加强芯生产设备结构图。
图2为张力传感器***结构图。
附图标记说明：芳纶纤维纱1、烘道2、模具3、烘道4、张力传感器***5、压辊装置6、缠绕装置7、滑轮8、张力传感器活轮9、光缆加强芯10、读出器11。
具体实施方式
实施例1：
本发明提供一种芳纶纤维增强复合材料光缆加强芯连续生产方法，所述胶液按重量份为：每100份不饱和树脂添加中温固化剂2份，高温固化剂1.5份，脱模剂1.5份，硅烷偶联剂0.6份，填料4份。
所述芳纶纤维增强复合材料光缆加强芯连续生产方法包括下列步骤：
将芳纶纤维纱1经过加热到80℃的烘道2进行预热，软化纤维，提升浸料程度。
将预热好的芳纶纤维纱通过装有上述胶液的料槽，经过料槽内 的擦胶过程，使芳纶纤维纱浸润完全。
将浸料完全的芳纶纤维纱通过加热到170℃的模具3，使其成型并初步固化。
将初步固化的光缆加强芯再通过加热到240℃的烘道4进行后固化处理，使其完全固化，提升了胶接强度，改善加强芯的韧性。
在张力传感器***5中，光缆加强芯10通过固定的滑轮8和张力传感器活轮9，再由读出器11读出此时拉伸张力，对生产过程进行实时监测，判定堵模是否即将发生。
最后的压辊装置6和缠绕装置7，使光缆加强芯10均匀收卷起来。
实施例2：
所述胶液按重量份为：每100份不饱和树脂添加中温固化剂1.5份，高温固化剂1.0份，脱模剂1.0份，硅烷偶联剂0.3份，填料3.0份。其余生产步骤或工艺条件相同。
实施例3：
所述胶液按重量份为：每100份不饱和树脂添加中温固化剂2.5份，高温固化剂2.0份，脱模剂2.0份，硅烷偶联剂0.8份，填料5.0份。其余生产步骤或工艺条件相同。
当张力传感器***读出的数据显示张力变大，说明要发生堵模，光缆加强芯即将断裂，此时需采用溶剂法或磨砂法对模具内壁进行清理，即将溶剂或磨砂液均匀涂覆在模具前粘有胶液的芳纶纤维纱上，清理模具的内壁使其保持光滑，以降低拉伸张力，防止芳纶光 缆加强芯的断裂，从而做到芳纶光缆增强芯的连续生产。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，本领域普通技术人员对本发明的技术方案所做的其他修改或者等同替换，只要不脱离本发明技术方案的精神和范围，均应涵盖在本发明的权利要求范围当中。

Claims (5)

  1. 一种芳纶纤维增强复合材料光缆加强芯连续生产方法，其特征在于，包括以下步骤：将芳纶纤维进行预热，然后通过由不饱和树脂、固化剂、脱模剂、填料、偶联剂均匀混合的胶液，经由模具成型固化，再通过后固化处理，经过张力传感器***，最后通过压辊装置进行牵引并收卷成品。
  2. 根据权利要求1所述的一种芳纶纤维增强复合材料光缆加强芯连续生产方法，其特征在于，所述偶联剂为硅烷偶联剂。
  3. 根据权利要求1所述的一种芳纶纤维增强复合材料光缆加强芯连续生产方法，其特征在于，所述张力传感器***显示张力变大时，采取溶剂法或磨砂法清理模具内壁。
  4. 根据权利要求3所述的一种芳纶纤维增强复合材料光缆加强芯连续生产方法，其特征在于，所述溶剂法使用的溶剂为甲基异丁基甲酮。
  5. 根据权利要求3所述的一种芳纶纤维增强复合材料光缆加强芯连续生产方法，其特征在于，所述磨砂法使用的磨砂剂为填料和苯乙烯的混合液。
PCT/CN2014/087778 2014-08-30 2014-09-29 芳纶纤维光缆加强芯连续生产方法 WO2016029526A1 (zh)

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