CN110484013A - 一种表面抗静电的共挤木塑复合材料 - Google Patents
一种表面抗静电的共挤木塑复合材料 Download PDFInfo
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Abstract
本发明公开了一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,所述内层包括以下重量份原料:聚乙烯60‑70、聚丙烯20‑30、植物纤维粉I 80‑90、***树胶2‑4、无机填料5‑7、相容剂3‑5、润滑剂I 2‑4、偶联剂6‑8;所述面层包括以下重量份原料:聚丙烯12‑14、聚乙烯3‑5、植物纤维粉II 7‑9、炭黑1‑2、碳纳米管3‑5、聚苯胺2‑4、硅烷偶联剂2‑4、润滑剂II 0.6‑0.8。本发明的木塑复合材料采用抗静电的面层包裹内层,内层材料成分和含量不受影响,在不改变木塑材料优良性能的前提下,提高木塑复合材料的抗静电能力,且抗静电成分添加量小,生产成本低。
Description
技术领域
本发明涉及木塑材料技术领域,尤其涉及一种表面抗静电的共挤木塑复合材料。
背景技术
木塑复合材料(WPC)是近年来兴起的一类绿色环保材料,这种复合材料是由农林废弃物(如木粉、竹粉、糠粉等植物纤维)和塑料按一定配比进行复合,并添加相应助剂经高温高压制得的,其产品主要用作木材的替代品。与传统的木材相比,木塑复合材料具有不翘曲、不开裂、尺寸稳定性好、易加工、防霉变、不怕虫蛀、耐酸碱、成本低等优点,近年来,木塑复合材料以其绿色环保性和其特有的性能得到了越来越广泛的应用,其产量逐年快速增长。
目前,关于木塑复合材料的抗静电研究报道较少,公开号为CN102382399A的中国专利申请公开了一种防静电聚氯乙烯基木塑复合材料及制备方法,采用碳黑和导电云母粉作为抗静电剂,同时添加一定量的稀土稳定剂,制得的木粉/聚氯乙烯复合材料具有防静电功能和优良的力学性能;公开号为CN102627795A的中国专利申请公开了一种防霉防静电塑木复合材料及其制备方法,所采用的塑料基体为聚乙烯,抗静电剂为尼龙12类聚酰胺弹性体高分子防静电剂,同时添加了一定量的防霉抗菌剂以获得防霉抗静电双重效果。
现有抗静电木塑复合材料尽管具有一定的抗静电性能,但具有抗静电剂添加量大、成本偏高的缺点,限制了实际应用。基于此,如何设计一种表面抗静电的共挤木塑复合材料是本发明所要解决的技术问题。
发明内容
本发明针对现有技术的不足,提供一种表面抗静电的共挤木塑复合材料。
本发明通过以下技术手段实现解决上述技术问题的:
一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯60-70、聚丙烯20-30、植物纤维粉I 80-90、***树胶2-4、无机填料5-7、相容剂3-5、润滑剂I 2-4、偶联剂6-8;
所述面层包括以下重量份原料:聚丙烯12-14、聚乙烯3-5、植物纤维粉II 7-9、炭黑1-2、碳纳米管3-5、聚苯胺2-4、硅烷偶联剂2-4、润滑剂II 0.6-0.8。
优选的,所述植物纤维粉I为木粉、竹粉、糠粉、秸秆粉或其它农林废弃物粉中的任一种;所述植物纤维粉II为木粉、竹粉、糠粉、秸秆粉或其它农林废弃物粉中的任一种。
优选的,所述无机填料为碳酸钙、滑石粉、硅灰石、高岭土的一种或几种的混合;所述相容剂为马来酸酐改性聚乙烯、乙烯-丙烯酸共聚物或乙烯-醋酸乙烯共聚物中的一种或几种的混合;所述润滑剂I为硬脂酸、PE蜡或硬脂酸钙中的一种或几种的混合;所述润滑剂II为硬脂酸、PE蜡或硬脂酸钙中的一种或几种的混合;所述偶联剂为固体铝酸酯类或钛酸酯类。
一种表面抗静电的共挤木塑复合材料的制备方法,包括以下步骤:
(1)将内层原料加入高速混合机中,混合均匀后加入平行双螺杆挤出机中,在温度160~170℃、转速75~85r/min下进行混炼、挤出、造粒、冷却,得到内层料粒子;
(2)将面层原料加入高速混合机中,混合均匀后加入平行双螺杆挤出机中,在温度165~175℃、转速75~85r/min下进行混炼、挤出、造粒、冷却,得到面层料粒子;
(3)将内层料粒子加入双螺杆挤出机中,在温度为185~195℃条件下熔融挤出至共挤模具流道中;将面层料粒子加入双螺杆挤出机中,在温度为190~200℃条件下熔融挤出至共挤模具流道中;熔融后的内层料与面层料在双层共挤模具中汇合,使面层包覆在内层表面,然后进入定型模中定型,最后进入冷却水槽中冷却。
本发明的优点在于:本发明的木塑复合材料采用抗静电的面层包裹内层,内层材料成分和含量不受影响,在不改变木塑材料优良性能的前提下,提高木塑复合材料的抗静电能力,且抗静电成分添加量小,生产成本低;采用碳纳米管,一方面减少炭黑的用量,另一方面容易在面层中均匀分散并形成导电通道,有利于电荷的传递;聚苯胺的添加,有利于复合体系中形成稳定的导电通路,且即使在改性碳纳米管与炭黑发生团聚时,依然有效的实现电荷的传递,使复合体系的抗静电性永久持续。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1,一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯60、聚丙烯20、植物纤维粉I 80、***树胶2、无机填料5、相容剂3、润滑剂I 2、偶联剂6;
所述面层包括以下重量份原料:聚丙烯12、聚乙烯3、植物纤维粉II 7、炭黑1、碳纳米管3、聚苯胺2、硅烷偶联剂2、润滑剂II 0.6。
实施例2,一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯65、聚丙烯25、植物纤维粉I 85、***树胶3、无机填料6、相容剂4、润滑剂I 3、偶联剂7;
所述面层包括以下重量份原料:聚丙烯13、聚乙烯4、植物纤维粉II 8、炭黑1、碳纳米管4、聚苯胺3、硅烷偶联剂3、润滑剂II 0.7。
实施例3,一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯70、聚丙烯30、植物纤维粉I 90、***树胶4、无机填料7、相容剂5、润滑剂I 4、偶联剂8;
所述面层包括以下重量份原料:聚丙烯14、聚乙烯5、植物纤维粉II 9、炭黑2、碳纳米管5、聚苯胺4、硅烷偶联剂4、润滑剂II 0.8。
实施例4,一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯65、聚丙烯25、植物纤维粉I 85、***树胶3、无机填料6、相容剂4、润滑剂I 3、偶联剂7;
所述面层包括以下重量份原料:聚丙烯13、聚乙烯4、植物纤维粉II 8、碳纳米管4、聚苯胺3、硅烷偶联剂3、润滑剂II 0.7。
实施例5,一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯65、聚丙烯25、植物纤维粉I 85、***树胶3、无机填料6、相容剂4、润滑剂I 3、偶联剂7;
所述面层包括以下重量份原料:聚丙烯13、聚乙烯4、植物纤维粉II 8、炭黑1、聚苯胺3、硅烷偶联剂3、润滑剂II 0.7。
实施例6,一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,
所述内层包括以下重量份原料:聚乙烯65、聚丙烯25、植物纤维粉I 85、***树胶3、无机填料6、相容剂4、润滑剂I 3、偶联剂7;
所述面层包括以下重量份原料:聚丙烯13、聚乙烯4、植物纤维粉II 8、炭黑1、碳纳米管4、硅烷偶联剂3、润滑剂II 0.7。
上述实施例中,所述植物纤维粉I为木粉、竹粉、糠粉、秸秆粉或其它农林废弃物粉中的任一种;所述植物纤维粉II为木粉、竹粉、糠粉、秸秆粉或其它农林废弃物粉中的任一种;所述无机填料为碳酸钙、滑石粉、硅灰石、高岭土的一种或几种的混合;所述相容剂为马来酸酐改性聚乙烯、乙烯-丙烯酸共聚物或乙烯-醋酸乙烯共聚物中的一种或几种的混合;所述润滑剂I为硬脂酸、PE蜡或硬脂酸钙中的一种或几种的混合;所述润滑剂II为硬脂酸、PE蜡或硬脂酸钙中的一种或几种的混合;所述偶联剂为固体铝酸酯类或钛酸酯类。
上述表面抗静电的共挤木塑复合材料的制备方法,包括以下步骤:
(1)将内层原料加入高速混合机中,混合均匀后加入平行双螺杆挤出机中,在温度165℃、转速80r/min下进行混炼、挤出、造粒、冷却,得到内层料粒子;
(2)将面层原料加入高速混合机中,混合均匀后加入平行双螺杆挤出机中,在温度170℃、转速80r/min下进行混炼、挤出、造粒、冷却,得到面层料粒子;
(3)将内层料粒子加入双螺杆挤出机中,在温度为190℃条件下熔融挤出至共挤模具流道中;将面层料粒子加入双螺杆挤出机中,在温度为195℃条件下熔融挤出至共挤模具流道中;熔融后的内层料与面层料在双层共挤模具中汇合,使面层包覆在内层表面,然后进入定型模中定型,最后进入冷却水槽中冷却。
本发明的木塑复合材料采用抗静电的面层包裹内层,内层材料成分和含量不受影响,在不改变木塑材料优良性能的前提下,提高木塑复合材料的抗静电能力,且抗静电成分添加量小,生产成本低;采用碳纳米管,一方面减少炭黑的用量,另一方面容易在面层中均匀分散并形成导电通道,有利于电荷的传递;聚苯胺的添加,有利于复合体系中形成稳定的导电通路,且即使在改性碳纳米管与炭黑发生团聚时,依然有效的实现电荷的传递,使复合体系的抗静电性永久持续。
需要说明的是,在本文中,如若存在第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (4)
1.一种表面抗静电的共挤木塑复合材料,包括内层和包覆在内层表面的面层,所述面层通过共挤工艺包覆在内层表面,其特征在于:
所述内层包括以下重量份原料:聚乙烯60-70、聚丙烯20-30、植物纤维粉I 80-90、***树胶2-4、无机填料5-7、相容剂3-5、润滑剂I 2-4、偶联剂6-8;
所述面层包括以下重量份原料:聚丙烯12-14、聚乙烯3-5、植物纤维粉II 7-9、炭黑1-2、碳纳米管3-5、聚苯胺2-4、硅烷偶联剂2-4、润滑剂II 0.6-0.8。
2.根据权利要求1所述的一种表面抗静电的共挤木塑复合材料,其特征在于:所述植物纤维粉I为木粉、竹粉、糠粉、秸秆粉或其它农林废弃物粉中的任一种;所述植物纤维粉II为木粉、竹粉、糠粉、秸秆粉或其它农林废弃物粉中的任一种。
3.根据权利要求1所述的一种表面抗静电的共挤木塑复合材料,其特征在于:所述无机填料为碳酸钙、滑石粉、硅灰石、高岭土的一种或几种的混合;所述相容剂为马来酸酐改性聚乙烯、乙烯-丙烯酸共聚物或乙烯-醋酸乙烯共聚物中的一种或几种的混合;所述润滑剂I为硬脂酸、PE蜡或硬脂酸钙中的一种或几种的混合;所述润滑剂II为硬脂酸、PE蜡或硬脂酸钙中的一种或几种的混合;所述偶联剂为固体铝酸酯类或钛酸酯类。
4.一种表面抗静电的共挤木塑复合材料的制备方法,其特征在于,包括以下步骤:
(1)将内层原料加入高速混合机中,混合均匀后加入平行双螺杆挤出机中,在温度160~170℃、转速75~85r/min下进行混炼、挤出、造粒、冷却,得到内层料粒子;
(2)将面层原料加入高速混合机中,混合均匀后加入平行双螺杆挤出机中,在温度165~175℃、转速75~85r/min下进行混炼、挤出、造粒、冷却,得到面层料粒子;
(3)将内层料粒子加入双螺杆挤出机中,在温度为185~195℃条件下熔融挤出至共挤模具流道中;将面层料粒子加入双螺杆挤出机中,在温度为190~200℃条件下熔融挤出至共挤模具流道中;熔融后的内层料与面层料在双层共挤模具中汇合,使面层包覆在内层表面,然后进入定型模中定型,最后进入冷却水槽中冷却。
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