CN103772897B - 一种导电性pom材料及其制备方法 - Google Patents

一种导电性pom材料及其制备方法 Download PDF

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CN103772897B
CN103772897B CN201410032070.5A CN201410032070A CN103772897B CN 103772897 B CN103772897 B CN 103772897B CN 201410032070 A CN201410032070 A CN 201410032070A CN 103772897 B CN103772897 B CN 103772897B
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carbon nanotube
pom
electroconductibility
trimethyl silane
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CN103772897A (zh
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石磊
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Guangdong Jinyi Technology Co.,Ltd.
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NANTONG RED STON TECHNOLOGY DEVELOPMENT Co Ltd
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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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • 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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

本发明属于材料领域，公开了一种导电性POM材料及其制备方法。该导电性POM材料由包含以下重量份的组分制成：POM？60-75份、碳纳米管15-20份，聚甲基丙烯酸甲酯5-10份、三甲硅基甲基膦酸二甲酯10-20份、偶联剂KH550？1-5份和抗氧剂1010？1-5份。各成分经过充分混合后，通过双螺杆机挤出，造粒，得到导电性POM材料。本发明制得的导电性POM材料不仅具有良好的相容性、均一性和阻燃性，而且同时具有良好的热稳定性和力学性能。

Description

一种导电性POM材料及其制备方法
技术领域
本发明属于材料领域，尤其涉及一种导电性POM材料及其制备方法。
背景技术
聚甲醛（POM）是一种有光泽的硬而致密的材料，具有高的力学性能，如强度、模量、耐磨性、韧性、耐疲劳性和可加工性，被广泛应用于汽车、机械部件、电子电气等领域。
随着对POM材料需求的日益增大，人民对POM这种电绝缘材料提出了导电性的需求，POM本身是电绝缘材料，针对这种需求，现有研究者通过在材料中添加导电性炭黑来提高POM的导电性，但由于炭黑表面含有羟基等极性官能团，会造成POM热稳定性下降，进而造成物理力学性能的降低，并且由于炭黑为微球状粒子，在添加量为20%以上时才具备较好的导电性能，随着炭黑的添加量的增加整个复合材料存在相容性的问题。
发明内容
本发明目的在于提供了一种导电性POM材料及其制备方法，制得导电性POM材料不仅具有良好的相容性、均一性和阻燃性，而且同时具有良好的热稳定性和力学性能。
本发明的目的可以通过以下技术方案实现：
一种导电性POM材料，主要由包含以下重量份的组分制成:
POM                              60-75份，
碳纳米管                          15-20份，
聚甲基丙烯酸甲酯                   5-10份，
三甲硅基甲基膦酸二甲酯            10-20份，
偶联剂KH550                        1-5份,
抗氧剂1010                          1-5份，
所述的碳纳米管为经过三甲基硅烷溶液处理的。
所述碳纳米管的直径为10-15纳米。
所述三甲基硅烷溶液中，三甲基硅烷所占质量百分为5%浓度，其余为N,N’-二甲基甲酰胺。
一种导电性POM材料的制备方法，该方法包括以下步骤：
（1）POM 60-75份、聚甲基丙烯酸甲酯5-10份、三甲硅基甲基膦酸二甲酯10-20份、偶联剂KH550  1-5份和抗氧剂1010  1-5份；
（2）将上述原料放入高速混合机中充分混合，用计量输送料装置，将混合后的物料送入双螺杆挤出机中，经过螺杆的剪切作用，充足混炼，利用侧向喂料机向螺杆里加入经三甲基硅烷处理过的碳纳米管15-20份，经过充分混合后，挤出，造粒。
其中各区段温度为：一区150-160℃，二区160-170℃，三区170-180℃，四区180-200℃。
步骤（2）中所述的碳纳米管为经过含三甲基硅烷质量百分为5%的N,N’-二甲基甲酰胺溶液浸泡处理后，在50℃下干燥2小时。
有益效果：
    本发明采用聚甲基丙烯酸甲酯作为相容剂，增加了碳纳米管与POM材料之间的相容性，使得材料的性能均一，同时本发明添加了无卤三甲硅基甲基膦酸二甲酯作阻燃剂，不仅使材料具有一定的阻燃性能，而且避免了有卤阻燃剂对环境的影响。此外，本发明添加的碳纳米管是经过三甲基硅烷处理的，这样避免了羟基等极性官能团造成的POM热稳定性下降和力学性能降低的问题。
具体实施方式
以下结合实施例对本发明作进一步的说明。
实施例1
碳纳米管的预处理：将直径为10纳米的碳纳米管为经过浸入含三甲基硅烷质量百分为5%的N,N’-二甲基甲酰胺溶液12小时后，在50℃下干燥，得到经三甲基硅烷处理过的碳纳米管；
将POM 60kg、聚甲基丙烯酸甲酯8kg、三甲硅基甲基膦酸二甲酯15kg、偶联剂KH550 5kg和抗氧剂1010  1kg，放入高速混合机中充分混合，用计量输送料装置，将混合后的物料送入双螺杆挤出机中，经过螺杆的剪切作用，充足混炼，利用侧向喂料机向螺杆里加入经三甲基硅烷处理过的碳纳米管20 kg，经过充分混合后，挤出，造粒，双螺杆机各区段温度为：一区150℃，二区160℃，三区170℃，四区180℃。
对得到的材料进行电导率测试，结果为7.4×10-2S/cm，力学性能测试结果见表1。
实施例2
碳纳米管的预处理：将直径为10纳米的碳纳米管为经过浸入含三甲基硅烷质量百分为5%的N,N’-二甲基甲酰胺溶液12小时后，在50℃下干燥，得到经三甲基硅烷处理过的碳纳米管；
将POM75kg、聚甲基丙烯酸甲酯5kg、三甲硅基甲基膦酸二甲酯10kg、偶联剂KH550  1kg和抗氧剂1010  5kg，放入高速混合机中充分混合，用计量输送料装置，将混合后的物料送入双螺杆挤出机中，经过螺杆的剪切作用，充足混炼，利用侧向喂料机向螺杆里加入经三甲基硅烷处理过的碳纳米管15 kg，经过充分混合后，挤出，造粒，双螺杆机各区段温度为：一区160℃，二区170℃，三区180℃，四区200℃。
对得到的材料进行电导率测试，结果为4.8×10-2S/cm，力学性能测试结果见表1。
实施例3
碳纳米管的预处理：将直径为15纳米的碳纳米管为经过浸入含三甲基硅烷质量百分为5%的N,N’-二甲基甲酰胺溶液12小时后，在50℃下干燥，得到经三甲基硅烷处理过的碳纳米管；
将POM 70kg、聚甲基丙烯酸甲酯10kg、三甲硅基甲基膦酸二甲酯20kg、偶联剂KH550  2kg和抗氧剂1010  3kg，放入高速混合机中充分混合，用计量输送料装置，将混合后的物料送入双螺杆挤出机中，经过螺杆的剪切作用，充足混炼，利用侧向喂料机向螺杆里加入经三甲基硅烷处理过的碳纳米管20 kg，经过充分混合后，挤出，造粒，双螺杆机各区段温度为：一区160℃，二区170℃，三区180℃，四区200℃。
对得到的材料进行电导率测试，结果为5.6×10-2S/cm，力学性能测试结果见表1。
表1
  测试标准 实施例1 实施例2 实施例3
悬臂梁缺口冲击强度（kJ/m2） GB/T 1843 154 137 139
拉伸强度（MPa） GB/T 1040 74 67 63

Claims (1)

1.一种导电性POM材料的制备方法，其特征在于，该方法包括以下步骤：
碳纳米管的预处理：将直径为10纳米的碳纳米管为经过浸入含三甲基硅烷质量百分为5%的N,N’-二甲基甲酰胺溶液12小时后，在50℃下干燥，得到经三甲基硅烷处理过的碳纳米管；将POM 60kg、聚甲基丙烯酸甲酯8kg、三甲硅基甲基膦酸二甲酯15kg、偶联剂KH550 5kg和抗氧剂1010  1kg，放入高速混合机中充分混合，用计量输送料装置，将混合后的物料送入双螺杆挤出机中，经过螺杆的剪切作用，充足混炼，利用侧向喂料机向螺杆里加入经三甲基硅烷处理过的碳纳米管20 kg，经过充分混合后，挤出，造粒，双螺杆机各区段温度为：一区150℃，二区160℃，三区170℃，四区180℃。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508820A (zh) * 2009-03-27 2009-08-19 北京化工大学 一种环保型无卤阻燃共聚甲醛复合物及其制备方法
CN102634162A (zh) * 2012-05-09 2012-08-15 四川大学 一种导热聚甲醛复合材料及其制备方法
CN103224685A (zh) * 2013-04-18 2013-07-31 苏州旭光聚合物有限公司 一种改性聚甲醛组合物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508820A (zh) * 2009-03-27 2009-08-19 北京化工大学 一种环保型无卤阻燃共聚甲醛复合物及其制备方法
CN102634162A (zh) * 2012-05-09 2012-08-15 四川大学 一种导热聚甲醛复合材料及其制备方法
CN103224685A (zh) * 2013-04-18 2013-07-31 苏州旭光聚合物有限公司 一种改性聚甲醛组合物

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