CN102127274A - 埋地式pvc-c电缆护套管 - Google Patents

埋地式pvc-c电缆护套管 Download PDF

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Publication number
CN102127274A
CN102127274A CN2011100306352A CN201110030635A CN102127274A CN 102127274 A CN102127274 A CN 102127274A CN 2011100306352 A CN2011100306352 A CN 2011100306352A CN 201110030635 A CN201110030635 A CN 201110030635A CN 102127274 A CN102127274 A CN 102127274A
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China
Prior art keywords
pvc
cable sheath
parts
sheath pipe
polyvinyl chloride
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CN2011100306352A
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许正好
邵远金
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Individual
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Individual
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Priority to CN2011100306352A priority Critical patent/CN102127274A/zh
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Classifications

    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Insulated Conductors (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

埋地式PVC-C电缆护套管，属塑料管材技术领域。其目的是提供一种性能优良的适合埋地式施工工程使用的PVC-C电缆护套管。其特征在于其原料组分及其重量份：重质碳酸钙：150，聚氯乙烯树脂PVC：73～78，氯化聚氯乙烯：4.5～5.6，铅盐复合稳定剂：2.8～3.2，石蜡：1.3～1.8，硬脂酸：0.8～1.2。上述原料经磨粉并在135～150℃拌料，机械均匀混合后，分别加入两台锥形双螺杆挤出机在180～210℃时共同挤出电缆护套管。本发明产品具有耐高温和抗老化性能好，能适应电力电缆使用过程因过载短路而产生的高温，材料具有高绝缘强度和体积电阻率；柔性好且抗压强度大、抗不均匀沉降，在施工现场无须包封浇混凝土；内壁表面磨擦系数小，利于使用，产品寿命长。

Description

埋地式PVC-C电缆护套管
技术领域
本发明涉及一种埋地式PVC-C电缆护套管，属塑料管材技术领域。
背景技术
目前工程用电缆套管是以聚氯乙烯树脂为主料、重质碳酸钙为填料、及氯化聚乙烯、石蜡等小料混合制成，并具备一定的耐腐蚀、耐高温、阻燃、绝缘耐磨重量轻、无污染等特性。但其不足之处是抗压强度差，与施工应用要求还有差距，其阻燃性能也不够理想；另外其维卡软化温度徘徊在90℃左右，内外管壁摩擦系数大等，增加了施工使用的难度。
发明内容
本发明的目的在于克服现有技术之不足，提供一种性能优良的适合埋地式施工工程使用的PVC-C电缆护套管。
其技术方案是：一种埋地式PVC-C电缆护套管，其特征在于其原料组分及其重量份：重质碳酸钙：150，聚氯乙烯树脂PVC：73---78，氯化聚氯乙烯：4.5--5.6，铅盐复合稳定剂：2.8--3.2，石蜡：1.3--1.8，硬脂酸：0.8--1.2。
将上述原料经磨粉并在135-150℃拌料，机械均匀混合后，分别加入两台锥形双螺杆挤出机在180-210℃时共同挤出电缆护套管。
其技术效果是：经检验，本发明PVC-C管材的质量指数分别为：管径压扁60％无破裂(普通管只能达到50％)；维卡软化温度达到95℃(标准值：≥93℃)；纵向回缩率＜2.0％；摩擦系数≤0.18；体积电阻率≥1.63×1013Ωcm；标准落锤冲击检测时未出现破裂和裂缝。表明本发明产品具有耐高温和抗老化性能好，能适应电力电缆使用过程因过载短路而产生的高温，材料具有高绝缘强度和体积电阻率；柔性好且抗压强度大、抗不均匀沉降，在施工现场无须包封浇混凝土；内壁表面磨擦系数小利于使用，产品寿命长，并具有施工方便，降低工程造价等特点，是一种较为理想的埋地式PVC-C电缆护套管。
具体实施方式
实施例1。取重质碳酸钙150份，聚氯乙烯树脂76份，铅盐复合稳定剂(为北京光明浩宇塑料助剂公司生产的GM-III型号，下同)3份，石蜡1.6份，硬脂酸1份，氯化聚氯乙烯5.5份，色(红)粉0.1份。将上述原料经磨粉并在150℃拌料，机械混合均匀后，分别加入SJSZ-65A和SJSZ-80两台锥形双螺杆挤出机在200℃时共同挤出红色成型产品电缆护套管。
实施例2。取重质碳酸钙150份，聚氯乙烯树脂75份，铅盐复合稳定剂2.8份，石蜡1.3份，硬脂酸0.8份，氯化聚氯乙烯4.5份，色粉0份。将上述原料经磨粉并在150℃拌料，机械混合均匀后，分别加入SJSZ-65A和SJSZ-80两台锥形双螺杆挤出机在210℃时共同挤出白色成型产品电缆护套管。
实施例3。取重质碳酸钙重钙150份，聚氯乙烯树脂78份，铅盐复合稳定剂3.2份，石蜡1.8份，硬脂酸1.2份，氯化聚氯乙烯5.6份，色(黑)粉0.1份。将上述原料经磨粉并在135℃拌料，机械混合均匀后，分别加入SJSZ-65A和SJSZ-80两台锥形双螺杆挤出机在180℃时共同挤出黑色成型产品电缆护套管。

Claims (2)

1.一种埋地式PVC-C电缆护套管，其特征在于其原料组分及其重量份：重质碳酸钙：150，聚氯乙烯树脂PVC：73---78，氯化聚氯乙烯：4.5--5.6，铅盐复合稳定剂：2.8--3.2，石蜡：1.3--1.8，硬脂酸：0.8--1.2。
2.根据权利要求1所述的埋地式PVC-C电缆护套管，其特征在于其制备方法：将上述原料经磨粉并在135-150℃拌料，机械均匀混合后，分别加入两台锥形双螺杆挤出机在180-210℃时共同挤出电缆护套管。
CN2011100306352A 2011-01-28 2011-01-28 埋地式pvc-c电缆护套管 Pending CN102127274A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104558940A (zh) * 2013-10-23 2015-04-29 宁夏金黄河塑业有限责任公司 一种耐高温高绝缘pbsi性的pvc护套
CN104558938A (zh) * 2013-10-23 2015-04-29 宁夏金黄河塑业有限责任公司 一种高改性耐磨pvc材料电缆护套
CN104945802A (zh) * 2015-05-29 2015-09-30 浙江邦德管业有限公司 一种埋地式高压电力电缆用耐高温pvc-c套管
CN105647082A (zh) * 2014-10-23 2016-06-08 国家电网公司 一种改性高压电力电缆用护套管

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102295810A (zh) * 2010-06-23 2011-12-28 安徽中天塑业有限公司 一种埋地式pvc-c电缆护套管生产工艺

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102295810A (zh) * 2010-06-23 2011-12-28 安徽中天塑业有限公司 一种埋地式pvc-c电缆护套管生产工艺

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104558940A (zh) * 2013-10-23 2015-04-29 宁夏金黄河塑业有限责任公司 一种耐高温高绝缘pbsi性的pvc护套
CN104558938A (zh) * 2013-10-23 2015-04-29 宁夏金黄河塑业有限责任公司 一种高改性耐磨pvc材料电缆护套
CN105647082A (zh) * 2014-10-23 2016-06-08 国家电网公司 一种改性高压电力电缆用护套管
CN104945802A (zh) * 2015-05-29 2015-09-30 浙江邦德管业有限公司 一种埋地式高压电力电缆用耐高温pvc-c套管

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Application publication date: 20110720