CN109099223A - 一种高承压能力的pvc排水管 - Google Patents
一种高承压能力的pvc排水管 Download PDFInfo
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- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 50
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 25
- 229920002472 Starch Polymers 0.000 claims abstract description 25
- 239000010452 phosphate Substances 0.000 claims abstract description 25
- -1 phosphate ester Chemical class 0.000 claims abstract description 25
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 17
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 9
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 24
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08L3/06—Esters
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- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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Abstract
本发明公开了一种高承压能力的PVC排水管,该排水管为ABA结构,外层即A层采用PVC树脂、钙粉、稳定剂、钛白粉、ACR、增塑剂、石蜡、增白剂为原料;内层即B层采用中短棉绒、大理石粉、磷酸酯淀粉~植物胶共聚胶黏剂、聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉、活性剂为原料,经过高温混合、冷却,由主机和辅机共挤成型制成三层PVC排水管。三层结构的排水管,内外为PVC层,具有较佳的物理化学性能,中间的B层起到高强度拉伸的作用,在不失去普通排水管优势的前提下,大大增强整个排水管的承压能力。
Description
技术领域
本发明涉及PVC技术领域,尤其涉及一种高承压能力的PVC排水管。
背景技术
PVC管材作为科技发展的产物之一,PVC管材在日常生活中触目可及,PVC管道凭借其自重轻,耐腐蚀,耐压强度高,安全方便等特点一直用于PVC排水管上。PVC排水管是传统排水管材的替代产品,具有较佳的物理化学性能。它内壁光滑,比常规排水材料的摩擦阻力小,因此横管安装坡度较小,能够提高建筑的室内净高。PVC排水管重量较轻,为铸铁管的五分之一,易于运输和操作。PVC排水管采用胶粘连接,方便安装及维修,价格较常规排水管材低廉,大大降低工程造价。PVC排水管耐腐蚀性能强,在建筑污废水及雨水管道系统使用普遍。另外,PVC排水管的普遍使用有利于节省钢材,对于缓解我国钢铁短缺的局面具有非常重要的意义。PVC排水管与铸铁管、钢管相比,PVC排水管存在承受压力低、抗冲击性能弱的缺点;而且PVC排水管虽然是难燃型材料,但对于室内明敷管道,存在火势沿排水立管向上蔓延的可能。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种高承压能力的PVC排水管。
本发明是通过以下技术方案实现的:
一种高承压能力的PVC排水管,其特征在于,该排水管为ABA结构,外层即A层采用PVC树脂、钙粉、稳定剂、钛白粉、ACR、增塑剂、石蜡、增白剂为原料;内层即B层采用中短棉绒、大理石粉、磷酸酯淀粉~植物胶共聚胶黏剂、聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉、活性剂为原料,经过高温混合、冷却,由主机和辅机共挤成型制成三层PVC排水管。
所述的PVC排水管具体制备方法为:
向反应釜中加入聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉,加热到50-80℃,恒温,将活性剂和20倍活性剂分量的去离子水投入到反应釜中;
开启搅拌并控制搅拌速率为500-600rpm,继续搅拌1-2h,使上述原料全部混合;
将磷酸酯淀粉~植物胶共聚胶黏剂投入到反应釜中,提高搅拌速率到800-1000rpm,加入短棉绒继续搅拌3-5h;
期间将大理石粉加热,200-220℃高温加热,加热过程中不断翻炒;
停止加热,将大理石粉置于反应釜内,搅拌均匀,冷却,使反应釜内物料自然冷却到35-40℃得到B层半成品;
将A层原料经过高搅打粉机搅拌至120摄氏度,再冷混10分钟,采用双螺杆造粒,造粒温度为120-150℃,并将粒料在挤出机上挤出管材,挤出机温度为170-190℃,冷却15秒;
挤出机由主机和辅机共同工作,分别挤出内A层与外A层;将内A层套入外A层,利用注塑机,将B层半成品填充入内A层与外A层之间,切割;
扩径机对内A层进行扩径,直至外A层外扩1mm,停止扩径;冷却后,即可得到三层PVC排水管。
所述的A层组成成分具体重量份为:PVC树脂100-105份、钙粉50-55份、稳定剂6-8份、钛白粉2-3份、ACR2-3份、增塑剂2-3份、石蜡0.2-0.3份、增白剂0.02-0.03份。
所述的B层组成成分具体重量份为:中短棉绒1-2份、大理石粉5-8份、磷酸酯淀粉~植物胶共聚胶黏剂3-4份、聚氧化乙烯3-4份、纳米SiO 2胶粒2-3份、磷酸酯淀粉1-3份、活性剂5-6份。
所述的增塑剂含有内润滑。
本发明的有益效果为:
利用增塑剂代替二辛脂,起到提前塑化,使粉料达到更好的塑化效果;
本发明用短棉绒作为胶剂之间的连接纤维,增强胶剂的拉伸力,聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉、活性剂、去离子水组成非牛顿流体,通过非牛顿流体、胶剂将碎石黏合在一起,胶剂凝固后,非牛顿流体无法与胶剂完全形成反应链,非牛顿流体存留在内部,在收到突然的强压下,非牛顿流体起到提升强度的作用;
在扩径时,内层还未冷却完毕,扩径的同时,内层分子不断分离,中间的B层通过胶剂快速将A层分子链连接,B层受挤压,纤维起到强有力的连接作用,挤出多余胶剂,外A层受力外扩时,证明B层间距基本被压缩,排水管内壁达到均匀厚度;
三层结构的排水管,内外为PVC层,具有较佳的物理化学性能,中间的B层起到高强度拉伸的作用,在不失去普通排水管优势的前提下,大大增强整个排水管的承压能力。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
一种高承压能力的PVC排水管,该排水管为ABA结构,外层即A层采用PVC树脂、钙粉、稳定剂、钛白粉、ACR、增塑剂、石蜡、增白剂为原料;内层即B层采用中短棉绒、大理石粉、磷酸酯淀粉~植物胶共聚胶黏剂、聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉、活性剂为原料,经过高温混合、冷却,由主机和辅机共挤成型制成三层PVC排水管。
所述的PVC排水管具体制备方法为:
向反应釜中加入聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉,加热到50-80℃,恒温,将活性剂和20倍活性剂分量的去离子水投入到反应釜中;
开启搅拌并控制搅拌速率为500-600rpm,继续搅拌1-2h,使上述原料全部混合;
将磷酸酯淀粉~植物胶共聚胶黏剂投入到反应釜中,提高搅拌速率到800-1000rpm,加入短棉绒继续搅拌3-5h;
期间将大理石粉加热,200-220℃高温加热,加热过程中不断翻炒;
停止加热,将大理石粉置于反应釜内,搅拌均匀,冷却,使反应釜内物料自然冷却到35-40℃得到B层半成品;
将A层原料经过高搅打粉机搅拌至120摄氏度,再冷混10分钟,采用双螺杆造粒,造粒温度为120-150℃,并将粒料在挤出机上挤出管材,挤出机温度为170-190℃,冷却15秒;
挤出机由主机和辅机共同工作,分别挤出内A层与外A层;将内A层套入外A层,利用注塑机,将B层半成品填充入内A层与外A层之间,切割;
扩径机对内A层进行扩径,直至外A层外扩1mm,停止扩径;冷却后,即可得到三层PVC排水管。
所述的增塑剂含有内润滑。
具体实施例1:所述的A层:PVC树脂100kg、钙粉50kg、稳定剂6kg、钛白粉2kg、ACR2kg、增塑剂2kg、石蜡0.2kg、增白剂0.02kg。
所述的B层:中短棉绒1kg、大理石粉5kg、磷酸酯淀粉~植物胶共聚胶黏剂3kg、聚氧化乙烯3kg、纳米SiO 2胶粒2kg、磷酸酯淀粉1kg、活性剂5kg。
具体实施例2:所述的A层:PVC树脂105kg、钙粉55kg、稳定剂8kg、钛白粉3kg、ACR3kg、增塑剂3kg、石蜡0.3kg、增白剂0.03kg。
所述的B层:中短棉绒2kg、大理石粉8kg、磷酸酯淀粉~植物胶共聚胶黏剂4kg、聚氧化乙烯4kg、纳米SiO 2胶粒3kg、磷酸酯淀粉3kg、活性剂6kg。
具体实施例3:所述的A层:PVC树脂100kg、钙粉50kg、稳定剂6kg、钛白粉2.5kg、ACR2.2kg、增塑剂2.4kg、石蜡0.2kg、增白剂0.02kg。
所述的B层:中短棉绒2kg、大理石粉8kg、磷酸酯淀粉~植物胶共聚胶黏剂4kg、聚氧化乙烯4kg、纳米SiO 2胶粒3kg、磷酸酯淀粉3kg、活性剂6kg。
对比例1:使用100重量份纳米碳酸钙与6重量份钛酸酯偶联剂NDZ一101在30℃搅拌均匀,得混合物备用;将得到的混合物加热至50℃并进行固相搅拌1min,然后冷却到常温即得到改性纳米碳酸钙;将100重量份的改性纳米碳酸钙与10重量份的CPE采用乳液聚合法,制备出形成以纳米碳酸钙为核、以CPE为壳的核壳结构复合改性粒子具体操作步骤为:将上述经改性后的纳米碳酸钙置于冷凝装置的反应器中,加入去离子水,搅拌均匀,然后加入乳化剂、CPE,加热至80℃并搅拌分散均匀,加入常规引发剂,在80℃温度反应2h,持续搅拌,反应结束后冷却至室温,即得到以纳米碳酸钙为核以CPE为壳的复合改性粒子。
然后将4重量份复合改性粒子与100重量份PVC熔融共混,使复合改性粒子在PVC基体中良好分散,从而制备出高性能的三元纳米复合材料。
将上述高性能的三元纳米复合材料经双螺杆挤出机熔融共混和成型,再经冷却定型制得具有高效高韧性的PVC排水管材。
对比例2
使用100重量份纳米碳酸钙与8重量份钛酸酯偶联剂NDZ一101在50℃搅拌均匀,得混合物备用;将得到的混合物加热至70℃并进行固相搅拌4min,然后冷却到常温即得到改性纳米碳酸钙;将100重量份的改性纳米碳酸钙与15重量份的CPE采用乳液聚合法,制备出形成以纳米碳酸钙为核、以CPE为壳的核壳结构复合改性粒子,具体操作步骤为:将上述经改性后的纳米碳酸钙置于冷凝装置的反应器中,加入去离子水,搅拌均匀,然后加入乳化剂、CPE,加热至85℃并搅拌分散均匀,加入常规引发剂,在85℃温度反应3h,持续搅拌,反应结束后冷却至室温,即得到以纳米碳酸钙为核以CPE为壳的复合改性粒子。
然后将5重量份复合改性粒子与100重量份PVC熔融共混,使复合改性粒子在PVC基体中良好分散,从而制备出高性能的三元纳米复合材料。
将上述高性能的三元纳米复合材料经双螺杆挤出机熔融共混和成型,再经冷却定型制得具有高效高韧性的PVC排水管材。
本发明的各实施例与对比例中制备得到的PVC管力学性能按照如下测定方法进行测定:
拉伸强度,按GB/T8804.2-2003标准进行测试;
断裂伸长率,按GB/T5836-1996标准进行测试;
低温冲击强度,按GB/T13525-1992标准进行测试;
常温冲击强度,按GB/T13525-1992标准进行测试。
由表可知,本发明所制备得到的PVC排水管具有高韧性,在-18℃条件下的韧性仍然大于20KJ/㎡,同时本发明具有较高的拉伸强度、断裂伸长率和冲击强度,内部承压能力更强,具有较好的机械强度,能应用于各种场合。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (4)
1.一种高承压能力的PVC排水管,其特征在于,该排水管为ABA结构,外层即A层采用PVC树脂、钙粉、稳定剂、钛白粉、ACR、增塑剂、石蜡、增白剂为原料;内层即B层采用中短棉绒、大理石粉、磷酸酯淀粉~植物胶共聚胶黏剂、聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉、活性剂为原料,经过高温混合、冷却,由主机和辅机共挤成型制成三层PVC排水管。
2.根据权利要求1中所述的一种高承压能力的PVC排水管,其特征在于,所述的PVC排水管具体制备方法为:
向反应釜中加入聚氧化乙烯、纳米SiO 2胶粒、磷酸酯淀粉,加热到50-80℃,恒温,将活性剂和20倍活性剂分量的去离子水投入到反应釜中;
开启搅拌并控制搅拌速率为500-600rpm,继续搅拌1-2h,使上述原料全部混合;
将磷酸酯淀粉~植物胶共聚胶黏剂投入到反应釜中,提高搅拌速率到800-1000rpm,加入短棉绒继续搅拌3-5h;
期间将大理石粉加热,200-220℃高温加热,加热过程中不断翻炒;
停止加热,将大理石粉置于反应釜内,搅拌均匀,冷却,使反应釜内物料自然冷却到35-40℃得到B层半成品;
将A层原料经过高搅打粉机搅拌至120摄氏度,再冷混10分钟,采用双螺杆造粒,造粒温度为120-150℃,并将粒料在挤出机上挤出管材,挤出机温度为170-190℃,冷却15秒;
挤出机由主机和辅机共同工作,分别挤出内A层与外A层;将内A层套入外A层,利用注塑机,将B层半成品填充入内A层与外A层之间,切割;
扩径机对内A层进行扩径,直至外A层外扩1mm,停止扩径;冷却后,即可得到三层PVC排水管。
3.根据权利要求1中所述的一种高承压能力的PVC排水管,其特征在于,所述的A层组成成分具体重量份为:PVC树脂100-105份、钙粉50-55份、稳定剂6-8份、钛白粉2-3份、ACR2-3份、增塑剂2-3份、石蜡0.2-0.3份、增白剂0.02-0.03份。
4.根据权利要求1中所述的一种高承压能力的PVC排水管,其特征在于,所述的B层组成成分具体重量份为:中短棉绒1-2份、大理石粉5-8份、磷酸酯淀粉~植物胶共聚胶黏剂3-4份、聚氧化乙烯3-4份、纳米SiO 2胶粒2-3份、磷酸酯淀粉1-3份、活性剂5-6份。
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