CN113292791A - 一种高强度mpp塑料电缆导管 - Google Patents
一种高强度mpp塑料电缆导管 Download PDFInfo
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- 229920003023 plastic Polymers 0.000 title claims abstract description 80
- 239000004033 plastic Substances 0.000 title claims abstract description 80
- 239000000835 fiber Substances 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000002131 composite material Substances 0.000 claims abstract description 26
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003063 flame retardant Substances 0.000 claims abstract description 25
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000007822 coupling agent Substances 0.000 claims abstract description 19
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- 239000004417 polycarbonate Substances 0.000 claims abstract description 19
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 19
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
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- 238000002156 mixing Methods 0.000 claims description 56
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 26
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
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- -1 polypropylene Polymers 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
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- 238000001035 drying Methods 0.000 claims description 11
- 239000003995 emulsifying agent Substances 0.000 claims description 11
- 239000003999 initiator Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 claims description 7
- 229920002755 poly(epichlorohydrin) Polymers 0.000 claims description 7
- 229910052582 BN Inorganic materials 0.000 claims description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910017059 organic montmorillonite Inorganic materials 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 5
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 5
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- 238000000034 method Methods 0.000 claims description 5
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 5
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- 230000008961 swelling Effects 0.000 claims description 5
- 239000012670 alkaline solution Substances 0.000 claims description 4
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- BNEMLSQAJOPTGK-UHFFFAOYSA-N zinc;dioxido(oxo)tin Chemical compound [Zn+2].[O-][Sn]([O-])=O BNEMLSQAJOPTGK-UHFFFAOYSA-N 0.000 claims description 4
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims description 3
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 6
- 239000003607 modifier Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 2
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- 239000010842 industrial wastewater Substances 0.000 description 1
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Abstract
本发明属于MPP管技术领域,具体涉及一种高强度MPP塑料电缆导管,该高强度MPP塑料电缆导管包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5‑5.5份、天然植物纤维3.35‑4.25份、交联剂2.23‑4.75份,偶联剂2.36‑3.75份、保温剂5.66‑7.65份、阻燃剂3.35‑5.44份、抗冲击改性剂10.95‑15.74份、抗氧化剂1.25‑2.95份;通过加入复合纤维增强材料与MPP塑料制成高强度MPP塑料电缆导管,具有极好的冲击韧性,并且降低了成本;复合纤维增强材料膜其具有多孔结构,利于MPP塑料加热时在层间的流动,提高MPP塑料内部结构的均匀性,使得MPP塑料具有较好的物理机械性能,保证了MPP塑料的质量优异。
Description
技术领域
本发明属于MPP管技术领域,涉及一种高强度MPP塑料电缆导管。
背景技术
MPP管又称MPP电力电缆保护管,分为开挖型和非开挖型,MPP非开挖管又被称作为MPP顶管或托拉管,MPP管常被用作为10KV以上高压输电线电缆的排管管材。
MPP管可广泛应用于市政、电信、电力、煤气、自来水、热力等管线工程MPP管城乡非开挖水平定向钻进电力排管工程,及明开挖电力排管工程,MPP管城乡非开挖水平定向钻进下水排污排管工程和工业废水排放工程;
但是现有的MPP管均存在抗冲击强度差、抗腐蚀性导致其寿命较短的问题,使得MPP管,在受到外压的情况下,易发生变形甚至破裂,其耐压性还有很大的提升空间。
发明内容
本发明的目的在于提供一种高强度MPP塑料电缆导管。
本发明的目的可以通过以下技术方案实现:
一种高强度MPP塑料电缆导管,包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5-5.5份、天然植物纤维3.35-4.25份、交联剂2.23-4.75份,偶联剂2.36-3.75份、保温剂5.66-7.65份、阻燃剂3.35-5.44份、抗冲击改性剂10.95-15.74份、抗氧化剂1.25-2.95份;
其中MPP塑料管的具体制备过程如下:
步骤1:将改性聚丙烯、聚碳酸酯、偶联剂、交联剂、保温剂、阻燃剂依次倒入超声振荡混合设备中,然后加入有机溶剂振荡混合35-45min,干燥,得到干燥基料;
步骤2:天然植物纤维倒入粉碎设备中进行充分粉碎,然后通过100-150目的筛网进行筛选,再将天然植物纤维在碱性溶液中浸泡至润胀,然后蒸馏水清洗后冷冻干燥,再加入氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺,进行改性处理,改性处理的时间为1-4h,改性处理过程中温度控制为30-90℃,改性完成后降低至室温,得到复合纤维增强材料;
步骤6:将改性聚丙烯与复合纤维增强材料依次倒入混合搅拌设备中,以700-1000r/min的转速,温度为145-165℃的条件下搅拌20-30min,使复合纤维增强材料与干燥基料进行充分混合,然后将混合物与抗冲击改性剂、抗氧化剂用喂料机加入双螺杆挤出机中混炼造粒,挤出温度为160-190℃,将粒料干燥至水分含量在0.01%以下即得MPP塑料;
步骤7:将MPP塑料挤出成型,得到MPP塑料管。
进一步地,步骤1中有机溶剂为质量浓度55-95%的甲醇,步骤S1所述聚碳酸酯、交联剂、偶联剂、保温剂与阻燃剂的用量比为5.5g:1.25g:1.03g:2.3g:1.96g。
进一步地,所述步骤2中碱性溶液为浓度为5%-10%的氢氧化钠溶液,每100g天然植物纤维中加入氢氧化钠1000mL;加入氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺的浓度为0.3-1.4g/L。
进一步地,所述步骤2中得到的复合纤维增强材料首先进行水洗处理,再向其中缓慢地滴加质量浓度为5%盐酸溶液,当溶液的pH值为6.5-8.5时停止滴加,最后溢流水洗5-10min。
进一步地,步骤6中有机溶剂为质量浓度55-95%的甲醇;步骤6所述抗冲击改性剂与抗氧化剂的用量比为10.42g:1.40g。
进一步地,所述抗冲击改性剂的具体制备过程如下:
步骤3:先将氯化聚氯乙烯、热稳定剂加入反应釜中,混合至温度达到75-85℃,再加入乳化剂、引发剂和纳米级碳酸钙,进行高速混合,温度升至90-110℃,搅拌50-300min;
步骤4:将硅烷偶联剂kh550与乙醇按1:4溶于乙醇中,再滴加到步骤3的混合物中,然后在120℃下处理60-80min,再调节温度至95℃时加入1/3-1/2倍量的过硫酸钾溶液;
步骤5:将叔十二烷基硫醇加入步骤4中,保温混合10min,在60-85℃,保温混合45min,接着转入-15℃环境中密封静置4h,再进行抽滤,加入混炼机中,于130-140℃下混炼3-5min,即得抗冲击改性剂;
进一步地,步骤3中所述纳米级碳酸钙、氯化聚氯乙烯、乳化剂与引发剂的用量比为15.35g:10.23g:2.33g:0.57g。
进一步地,所述阻燃剂为有机蒙脱土、氮化硼、聚磷酸铵、锡酸锌或磷酸锆中的一种或两种以上的组合。
本发明的有益效果:
(1)本发明制备的MPP塑料电缆导管通过对天然植物纤维进行复合,使MPP塑料的强度得到更高的提升,很好地达到了通过采用天然植物纤维对MPP塑料增强处理的目的,大大提高了MPP塑料的机械强度,耐冲击能力和拉伸能力提高。
(2)通过加入复合纤维增强材料与MPP塑料制成高强度MPP塑料电缆导管,具有极好的冲击韧性,并且降低了成本;复合纤维增强材料膜其具有多孔结构,利于MPP塑料加热时在层间的流动,提高MPP塑料内部结构的均匀性,使得MPP塑料具有较好的物理机械性能,保证了MPP塑料的质量优异。
(3)通过将纳米级碳酸钙进行乳化、偶联处理能提高抗冲击改性剂表面的亲油性,从而提高了改性聚丙烯的力学性能,提高抗冲击强度。
具体实施方式
下面将结合实施例对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅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它实施例,都属于本发明保护的范围。
实施例1:
制备抗冲击改性剂:
步骤3:先将氯化聚氯乙烯、热稳定剂加入反应釜中,混合至温度达到75℃℃,再加入乳化剂、引发剂和纳米级碳酸钙,控制纳米级碳酸钙、氯化聚氯乙烯、乳化剂与引发剂的用量比为15.35g:10.23g:2.33g:0.57g,进行高速混合,温度升至90-110℃,搅拌50-300min;
步骤4:将硅烷偶联剂kh550与乙醇按1:4溶于乙醇中,再滴加到步骤3的混合物中,然后在120℃下处理60min,再调节温度至95℃时加入1/3倍量的过硫酸钾溶液;
步骤5:将叔十二烷基硫醇加入步骤4中,保温混合10min,在60℃,保温混合45min,接着转入-15℃环境中密封静置4h,再进行抽滤,加入混炼机中,于130℃下混炼3min,即得抗冲击改性剂;
实施例2:
步骤3:先将氯化聚氯乙烯、热稳定剂加入反应釜中,混合至温度达到80℃,再加入乳化剂、引发剂和纳米级碳酸钙,控制纳米级碳酸钙、氯化聚氯乙烯、乳化剂与引发剂的用量比为15.35g:10.23g:2.33g:0.57g,进行高速混合,温度升至100℃,搅拌170min;
步骤4:将硅烷偶联剂kh550与乙醇按1:4溶于乙醇中,再滴加到步骤3的混合物中,然后在120℃下处理60-80min,再调节温度至95℃时加入2/5倍量的过硫酸钾溶液;
步骤5:将叔十二烷基硫醇加入步骤4中,保温混合10min,在73℃,保温混合45min,接着转入-15℃环境中密封静置4h,再进行抽滤,加入混炼机中,于135℃下混炼4min,即得抗冲击改性剂。
实施例3
步骤3:先将氯化聚氯乙烯、热稳定剂加入反应釜中,混合至温度达到85℃,再加入乳化剂、引发剂和纳米级碳酸钙,控制纳米级碳酸钙、氯化聚氯乙烯、乳化剂与引发剂的用量比为15.35g:10.23g:2.33g:0.57g,进行高速混合,温度升至110℃,搅拌300min;
步骤4:将硅烷偶联剂kh550与乙醇按1:4溶于乙醇中,再滴加到步骤3的混合物中,然后在120℃下处理80min,再调节温度至95℃时加入1/2倍量的过硫酸钾溶液;
步骤5:将叔十二烷基硫醇加入步骤4中,保温混合10min,在85℃,保温混合45min,接着转入-15℃环境中密封静置4h,再进行抽滤,加入混炼机中,于140℃下混炼5min,即得抗冲击改性剂;
进一步地,步骤3中所述纳米级碳酸钙、氯化聚氯乙烯、乳化剂与引发剂的用量比为15.35g:10.23g:2.33g:0.57g。
实施例4:
一种高强度MPP塑料电缆导管,包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5-5.5份,天然植物纤维3.35-4.25份、交联剂2.23-4.75份,偶联剂2.36-3.75份、保温剂5.66-7.65份、阻燃剂3.35-5.44份、抗冲击改性剂10.95-15.74份、抗氧化剂1.25-2.95份;
其中MPP塑料管的具体制备过程如下:
步骤1:将改性聚丙烯、聚碳酸酯、偶联剂、交联剂、保温剂、阻燃剂依次倒入超声振荡混合设备中,控制聚碳酸酯、交联剂、偶联剂、保温剂与阻燃剂的用量比为5.5g:1.25g:1.03g:2.3g:1.96g,然后加入质量浓度55-95%的甲醇,振荡混合35-45min,干燥,得到干燥基料;所述阻燃剂为有机蒙脱土、氮化硼、;
步骤2:天然植物纤维倒入粉碎设备中进行充分粉碎,然后通过100-150目的筛网进行筛选,再将天然植物纤维在浓度为5%-10%的氢氧化钠溶液中浸泡至润胀,然后蒸馏水清洗后冷冻干燥,再加入浓度为0.3-1.4g/L的氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺,进行改性处理,改性处理的时间为1-4h,改性处理过程中温度控制为30-90℃,改性完成后降低至室温,得到复合纤维增强材料,再进行水洗处理,再向其中缓慢地滴加质量浓度为5%盐酸溶液,当溶液的pH值为6.5-8.5时停止滴加,最后溢流水洗5-10min;
步骤6:将改性聚丙烯与复合纤维增强材料依次倒入混合搅拌设备中,以700-1000r/min的转速,温度为145-165℃的条件下搅拌20-30min,使复合纤维增强材料与干燥基料进行充分混合,然后将混合物与实施例2制备的抗冲击改性剂、抗氧化剂用喂料机加入双螺杆挤出机中混炼造粒,抗冲击改性剂与抗氧化剂的用量比为10.42g:1.40g,挤出温度为160-190℃,将粒料干燥至水分含量在0.01%以下即得MPP塑料;
步骤7:将MPP塑料挤出成型,得到MPP塑料管;
实施例5:
一种高强度MPP塑料电缆导管,包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5.3份、天然植物纤维3.88份、交联剂3.73份,偶联剂3.04份、保温剂6.65份、阻燃剂4.02份、抗冲击改性剂12.74份、抗氧化剂2.03份;
其中MPP塑料管的具体制备过程如下:
步骤1:将改性聚丙烯、聚碳酸酯、偶联剂、交联剂、保温剂、阻燃剂依次倒入超声振荡混合设备中,控制聚碳酸酯、交联剂、偶联剂、保温剂与阻燃剂的用量比为5.5g:1.25g:1.03g:2.3g:1.96g,然后加入质量浓度75%的甲醇,振荡混合40min,干燥,得到干燥基料;所述阻燃剂为有机蒙脱土、氮化硼、聚磷酸铵、锡酸锌按任意比例混合而得;
步骤2:天然植物纤维倒入粉碎设备中进行充分粉碎,然后通过130目的筛网进行筛选,再将天然植物纤维在浓度为5%-10%的氢氧化钠溶液中浸泡至润胀,然后蒸馏水清洗后冷冻干燥,再加入浓度为0.8g/L的氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺,进行改性处理,改性处理的时间为1-4h,改性处理过程中温度控制为70℃,改性完成后降低至室温,得到复合纤维增强材料,再进行水洗处理,再向其中缓慢地滴加质量浓度为5%盐酸溶液,当溶液的pH值为7.5时停止滴加,最后溢流水洗8min;
步骤3:将改性聚丙烯与复合纤维增强材料依次倒入混合搅拌设备中,以850r/min的转速,温度为155℃的条件下搅拌25min,使复合纤维增强材料与干燥基料进行充分混合,然后将混合物与实施例2制备的抗冲击改性剂、抗氧化剂用喂料机加入双螺杆挤出机中混炼造粒,抗冲击改性剂与抗氧化剂的用量比为10.42g:1.40g,挤出温度为175℃,将粒料干燥至水分含量在0.01%以下即得MPP塑料;
步骤4:将MPP塑料挤出成型,得到MPP塑料管。
实施例6:
一种高强度MPP塑料电缆导管,包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5.5份,天然植物纤维4.25份、交联剂4.75份,偶联剂3.75份、保温剂7.65份、阻燃剂5.44份、抗冲击改性剂15.74份、抗氧化剂2.95份;
其中MPP塑料管的具体制备过程如下:
步骤1:将改性聚丙烯、聚碳酸酯、偶联剂、交联剂、保温剂、阻燃剂依次倒入超声振荡混合设备中,控制聚碳酸酯、交联剂、偶联剂、保温剂与阻燃剂的用量比为5.5g:1.25g:1.03g:2.3g:1.96g,然后加入质量浓度95%的甲醇,振荡混合45min,干燥,得到干燥基料;所述阻燃剂为有机蒙脱土、氮化硼、聚磷酸铵、锡酸锌或磷酸锆按任意比例混合而得;
步骤2:天然植物纤维倒入粉碎设备中进行充分粉碎,然后通过150目的筛网进行筛选,再将天然植物纤维在浓度为10%的氢氧化钠溶液中浸泡至润胀,然后蒸馏水清洗后冷冻干燥,再加入浓度为1.4g/L的氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺,进行改性处理,改性处理的时间为1-4h,改性处理过程中温度控制为90℃,改性完成后降低至室温,得到复合纤维增强材料,再进行水洗处理,再向其中缓慢地滴加质量浓度为5%盐酸溶液,当溶液的pH值为8.5时停止滴加,最后溢流水洗10min;
步骤3:将改性聚丙烯与复合纤维增强材料依次倒入混合搅拌设备中,以1000r/min的转速,温度为165℃的条件下搅拌30min,使复合纤维增强材料与干燥基料进行充分混合,然后将混合物与实施例2制备的抗冲击改性剂、抗氧化剂用喂料机加入双螺杆挤出机中混炼造粒,抗冲击改性剂与抗氧化剂的用量比为10.42g:1.40g,挤出温度为190℃,将粒料干燥至水分含量在0.01%以下即得MPP塑料;
步骤4:将MPP塑料挤出成型,得到MPP塑料管。
对比例1
一种高强度MPP塑料电缆导管,包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5.3份、天然植物纤维3.88份、交联剂3.73份,偶联剂3.04份、保温剂6.65份、阻燃剂4.02份、抗冲击改性剂12.74份、抗氧化剂2.03份;
其中MPP塑料管的具体制备过程如下:
步骤1:将改性聚丙烯、聚碳酸酯、偶联剂、交联剂、保温剂、阻燃剂依次倒入超声振荡混合设备中,控制聚碳酸酯、交联剂、偶联剂、保温剂与阻燃剂的用量比为5.5g:1.25g:1.03g:2.3g:1.96g,然后加入质量浓度75%的甲醇,振荡混合40min,干燥,得到干燥基料;所述阻燃剂为有机蒙脱土、氮化硼、聚磷酸铵按任意比例混合而得;
步骤2:将改性聚丙烯与天然植物纤维依次倒入混合搅拌设备中,以850r/min的转速,温度为155℃的条件下搅拌25min,使复合纤维增强材料与干燥基料进行充分混合,然后将混合物与实施例2制备的抗冲击改性剂、抗氧化剂用喂料机加入双螺杆挤出机中混炼造粒,抗冲击改性剂与抗氧化剂的用量比为10.42g:1.40g,挤出温度为175℃,将粒料干燥至水分含量在0.01%以下即得MPP塑料;
步骤3:将MPP塑料挤出成型,得到MPP塑料管。
采用DSC检测、SEM检测和力学性能测试对实施例4-6与对比例1中制备的高强度MPP塑料电缆导管进行性能检测进行弯曲强度、拉伸强度、撕裂强度测定,具体测定结果如表1所示:
表1
由表1可知,实施例5制备的MPP塑料撕裂强度达到152kPa,通过加入复合纤维增强材料与MPP塑料制成高强度MPP塑料电缆导管,具有极好的冲击韧性,并且降低了成本;复合纤维增强材料膜其具有多孔结构,利于MPP塑料加热时在层间的流动,提高MPP塑料内部结构的均匀性,使得MPP塑料具有较好的物理机械性能,保证了MPP塑料的质量优异。
对实施例4、5、6中制备的高强度MPP塑料电缆导管的冲击性能进行测试,冲击次数和破损面积分别结果如表2所示;
表2
根据倒角大小L和破损面积分别选取修正系数K和修正系数M,通过计算得到抗冲击值结果如表3所示:
表3
由表2、3可知,实施例4、6加入了抗冲击改性剂,通过将纳米级碳酸钙进行乳化、偶联处理能提高抗冲击改性剂表面的亲油性,从而提高了改性聚丙烯的力学性能,提高抗冲击强度。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。
Claims (7)
1.一种高强度MPP塑料电缆导管,其特征在于:包括MPP塑料管,该MPP塑料管由如下重量份原料制成:聚碳酸酯5-5.5份、天然植物纤维3.35-4.25份、交联剂2.23-4.75份,偶联剂2.36-3.75份、保温剂5.66-7.65份、阻燃剂3.35-5.44份、抗冲击改性剂10.95-15.74份、抗氧化剂1.25-2.95份;
其中MPP塑料管的具体制备过程如下:
步骤1:将改性聚丙烯、聚碳酸酯、偶联剂、交联剂、保温剂、阻燃剂依次倒入超声振荡混合设备中,然后加入有机溶剂振荡混合35-45min,干燥,得到干燥基料;
步骤2:天然植物纤维倒入粉碎设备中进行充分粉碎,然后通过100-150目的筛网进行筛选,再将天然植物纤维在碱性溶液中浸泡至润胀,然后蒸馏水清洗后冷冻干燥,再加入氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺,进行改性处理,改性处理的时间为1-4h,改性处理过程中温度控制为30-90℃,改性完成后降低至室温,得到复合纤维增强材料;
所述抗冲击改性剂的具体制备过程如下:
步骤3:先将氯化聚氯乙烯、热稳定剂加入反应釜中,混合至温度达到75-85℃,再加入乳化剂、引发剂和纳米级碳酸钙,进行高速混合,温度升至90-110℃,搅拌50-300min;
步骤4:将硅烷偶联剂kh550与乙醇按1:4溶于乙醇中,再滴加到步骤3的混合物中,然后在120℃下处理60-80min,再调节温度至95℃时加入1/3-1/2倍量的过硫酸钾溶液;
步骤5:将叔十二烷基硫醇加入步骤4中,保温混合10min,在60-85℃,保温混合45min,接着转入-15℃环境中密封静置4h,再进行抽滤,加入混炼机中,于130-140℃下混炼3-5min,即得抗冲击改性剂;
步骤6:将改性聚丙烯与复合纤维增强材料依次倒入混合搅拌设备中,以700-1000r/min的转速,温度为145-165℃的条件下搅拌20-30min,使复合纤维增强材料与干燥基料进行充分混合,然后将混合物与抗冲击改性剂、抗氧化剂用喂料机加入双螺杆挤出机中混炼造粒,挤出温度为160-190℃,将粒料干燥至水分含量在0.01%以下即得MPP塑料;
步骤7:将MPP塑料挤出成型,得到MPP塑料管。
2.根据权利要求1所述的一种高强度MPP塑料电缆导管,其特征在于:步骤1中有机溶剂为质量浓度55-95%的甲醇,步骤S1所述聚碳酸酯、交联剂、偶联剂、保温剂与阻燃剂的用量比为5.5g:1.25g:1.03g:2.3g:1.96g。
3.根据权利要求1所述的一种高强度MPP塑料电缆导管,其特征在于:所述步骤2中碱性溶液为浓度为5%-10%的氢氧化钠溶液,每100g天然植物纤维中加入氢氧化钠1000mL;加入氯代三嗪型季铵盐化合物和聚环氧氯丙烷二甲胺的浓度为0.3-1.4g/L。
4.根据权利要求1所述的一种高强度MPP塑料电缆导管,其特征在于:所述步骤2中得到的复合纤维增强材料首先进行水洗处理,再向其中缓慢地滴加质量浓度为5%盐酸溶液,当溶液的pH值为6.5-8.5时停止滴加,最后溢流水洗5-10min。
5.根据权利要求1所述的一种高强度MPP塑料电缆导管,其特征在于:步骤6中有机溶剂为质量浓度55-95%的甲醇;步骤6所述抗冲击改性剂与抗氧化剂的用量比为10.42g:1.40g。
6.根据权利要求1所述的一种高强度MPP塑料电缆导管,其特征在于:步骤3中所述纳米级碳酸钙、氯化聚氯乙烯、乳化剂与引发剂的用量比为15.35g:10.23g:2.33g:0.57g。
7.根据权利要求1所述的一种高强度MPP塑料电缆导管,其特征在于:所述阻燃剂为有机蒙脱土、氮化硼、聚磷酸铵、锡酸锌或磷酸锆中的一种或两种以上的组合。
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