CN107191687A - 埋地式pvc改性三层结构实壁排水管 - Google Patents
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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
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- 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
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- 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
- C08L27/22—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 modified by chemical after-treatment
- C08L27/24—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 modified by chemical after-treatment halogenated
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Abstract
本发明提供一种埋地式PVC改性三层结构实壁排水管,包括管体,所述管体为由抗冲击外层、抗压中层和抗冲击内层共挤形成的三层共挤复合管,所述管体的口径最大可达2000‑3000mm。本发明的有益效果是:由于本管体为由抗冲击外层、抗压中层和抗冲击内层共挤形成的三层共挤复合管,这样能使本PVC实壁管具有良好的强度、环刚度、柔韧性和抗冲击性;由于本PVC实壁管的口径最大可达2000‑3000mm,使本PVC实壁管的应用范围更为广泛。
Description
技术领域
本发明涉及管道技术领域,特别涉及一种埋地式PVC改性三层结构实壁排水管。
背景技术
传统的埋地式排水管通常选用PVC双壁波纹管、HDPE双壁管、水泥管、钢带管等,而其中PVC双壁波纹管和HDPE双壁管的环刚度差,容易出现路面坍塌的情况;而水泥管具有良好的环刚度,但水泥管能制作的长度短,运输成本高,使用起来十分不便;而钢带管具有良好的环刚度,且制作成本低,但是由于钢带管是塑料包裹于钢带外侧,在使用的过程中,钢带容易撑破塑料,导致水进入钢带管内部,长年累月钢带管内部的钢带被水腐蚀,致使钢带管的环刚度变差,最终使路面坍塌。
针对上述问题,部分商家提出一种PVC实壁管,传统的PVC实壁管的环刚度、韧性、耐腐蚀性等物理化学性能一般;另外,目前国内PVC实壁管的口径最大一般只能达到800mm,部分PVC实壁管的口径最大能达到1000mm,但已是很勉强,产生这一现象的原因是目前国内PVC实壁管在挤出成型时的压缩比只有7-12,当生产的PVC实壁管的口径大,而PVC实壁管在挤出成型时的压缩比跟不上,那就会影响PVC实壁管的质量。
发明内容
本发明的目的在于提供一种埋地式PVC改性三层结构实壁排水管,其具有良好的强度、环刚度、柔韧性和抗冲击性,并且在保证质量的前提下,本PVC实壁管的口径最大可达2000-3000mm,使本PVC实壁管的应用范围更为广泛。
根据本发明的一个方面,提供了一种埋地式PVC改性三层结构实壁排水管,包括管体,所述管体为由抗冲击外层、抗压中层和抗冲击内层共挤形成的三层共挤复合管,所述管体的口径最大可达2000-3000mm。
本发明的有益效果是:由于本管体为由抗冲击外层、抗压中层和抗冲击内层共挤形成的三层共挤复合管,这样能使本PVC实壁管具有良好的强度、环刚度、柔韧性和抗冲击性;由于本PVC实壁管的口径最大可达2000-3000mm,使本PVC实壁管的应用范围更为广泛。
在一些实施方式中,所述抗压中层为PVC抗压材料层、回收再生塑料抗压材料层或PVC与回收再生塑料混合抗压材料层中的一种,由此,能使PVC实壁管具有良好的强度和环刚度;由于抗压中层中的材料除了PVC抗压材料外,还可以使用回收再生塑料抗压材料,既能降低制作成本,又在一定程度上能解决社会上关于废塑料去向的问题,为我国的环保事业提供助力。
在一些实施方式中,所述抗冲击外层和抗冲击内层均为PVC抗冲击材料层,由此,能使PVC实壁管具有良好的柔韧性和抗冲击性。
在一些实施方式中,所述抗冲击外层、抗压中层和抗冲击内层之间的厚度比为1:1.2-1.3:1。
在一些实施方式中,所述管体包括主体部、与主体部一体连接的插接部和承接部,所述承接部轴向开设有与插接部外径大小适配的承接槽,所述承接槽的底部设有用于安装环状的橡胶圈的橡胶圈安装槽。由此,在承接时,排水管无需再加承接件即可相互承接,使用起来十分方便。
在一些实施方式中,所述PVC抗冲击材料层、PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层分别由以下成分组成:
所述PVC抗冲击材料层:PVC、ACR、CPE、ABS、CaCO3;
所述PVC抗压材料层:PVC、CPVC、ACR、ABS、CaCO3;
所述回收再生塑料抗压材料层:回收再生塑料、CPVC、ACR、ABS、CaCO3;
所述PVC与回收再生塑料混合抗压材料层:PVC、回收再生塑料、CPVC、ACR、ABS、CaCO3;
其中,所述PVC抗冲击材料层中的ABS可用BMC代替,所述PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层中的ABS可用PS代替。由此,所述PVC抗冲击材料层中的ACR、CPE、ABS、CaCO3能使抗冲击外层和抗冲击内层具有良好的抗冲击性和柔韧性,更能在一定程度上提高PVC的强度;所述PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层中的CPVC和CaCO3能使抗压中层获得良好的强度和环刚度,同时所述PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层中的ACR和ABS能在一定程度上提高抗压中层的柔韧性和抗冲击性;另外,抗压中层中可用回收再生塑料全部代替或部分代替PVC,这样既能降低制作成本,又在一定程度上能解决社会上关于废塑料去向的问题,为我国的环保事业提供助力。
一种埋地式PVC改性三层结构实壁排水管的制备方法,包括以下步骤:
1)抗冲击外层和抗冲击内层材料制备:
将64-86份PVC、3-5份的ACR、3-6份CPE、3-5份ABS和5-20份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料A;
2)抗压中层材料制备:
将35-64份PVC、25-35份CPVC、3-5份ACR、3-5份ABS和5-20份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料B;
3)管体制作:
将由步骤1)中制得的物料A放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗冲击外层和抗冲击内层;同时将由步骤2)中制得的物料B放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗压中层;熔融状态的抗冲击外层、抗冲击内层和抗压中层经分流支架流入同一模具中,再以一定的压缩比自模具中压缩挤出,最后经真空定径、牵引和定长切割得到埋地式PVC改性三层结构实壁排水管。
在一些实施方式中,步骤1)中3-5份的ABS可用3-5份的BMC代替。
在一些实施方式中,步骤2)中35-64份PVC可用35-64份回收再生塑料或12.5-32份PVC和12.5-32份回收再生塑料混合料代替;3-5份ABS可用3-5份PS代替。
在一些实施方式中,步骤3)中的压缩比为7-28,由此,能使本PVC实壁管的口径最大可达2000-3000mm,扩大本PVC实壁管的适用范围。
附图说明
图1是本发明之实施例的截面图。
图2是本发明之管体的结构图。
具体实施方式
下面结合附图对本发明作进一步详细的说明。
如图1所示,一种埋地式PVC改性三层结构实壁排水管,包括管体,所述管体为由抗冲击外层1、抗压中层2和抗冲击内层3共挤形成的三层共挤复合管,所述管体的口径最大可达2000-3000mm。所述抗压中层2为PVC抗压材料层、回收再生塑料抗压材料层或PVC与回收再生塑料混合抗压材料层中的一种。所述PVC抗压材料层:PVC、CPVC、ACR、ABS、CaCO3;所述回收再生塑料抗压材料层:回收再生塑料、CPVC、ACR、ABS、CaCO3;所述PVC与回收再生塑料混合抗压材料层:PVC、回收再生塑料、CPVC、ACR、ABS、CaCO3;所述PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层中的ABS可用PS代替。所述抗冲击外层1和抗冲击内层3均为PVC抗冲击材料层,所述PVC抗冲击材料层中的ABS可用BMC代替。所述PVC抗冲击材料层:PVC、ACR、CPE、ABS、CaCO3。所述抗冲击外层1、抗压中层2和抗冲击内层3之间的厚度比为1:1.2-1.3:1。
如图2所示为管体结构图,所述管体包括主体部4与主体部4一体连接的插接部5和承接部6,所述插接部5与主体部4具有相同的结构和尺寸。所述承接部6轴向开设有与插接部5外径大小适配的承接槽61,所述承接槽61的底部设有用于安装环状的橡胶圈的橡胶圈安装槽62,工作时,多条排水管相互承接使用。
承接方法:1、对排水管的承接槽61和橡胶圈安装槽的内侧以及对另一排水管插接部5的外侧进行清理,确保没有土或其它杂物;2、将环状的橡胶圈安装在橡胶圈安装槽62内,确保橡胶圈没有扭曲或装反;3、用手刷将润滑剂均匀涂抹在橡胶圈和插接部5的外表面上,注意不得将润滑剂涂抹在承接槽61内侧,以免顶翻橡胶圈;4、使用拉力工具将另一排水管的插接部5在平直状态下一次插入排水管的承接槽61内直至到达标线,然后用手电等强光工具从排水管的内壁检查橡胶圈的位置情况,若无翻胶,则承接完成,等待24小时后对承接好的排水管进行闭水试验,若有翻胶,则重新进行承接。
实施例1
1)抗冲击外层1和抗冲击内层3材料制备:
将86份PVC、3份的ACR、3份CPE、3份ABS和5份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料A;
2)抗压中层2材料制备:
将64份PVC、25份CPVC、3份ACR、3份ABS和5份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料B;
3)管体制作:
将由步骤1)中制得的物料A放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗冲击外层1和抗冲击内层3;同时将由步骤2)中制得的物料B放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗压中层2;熔融状态的抗冲击外层1、抗冲击内层3和抗压中层2经分流支架流入同一模具中,再以压缩比为7-28的条件下自模具中压缩挤出,最后经真空定径、牵引和定长切割得到埋地式PVC改性三层结构实壁排水管。
实施例2
1)抗冲击外层1和抗冲击内层3材料制备:
将64份PVC、5份的ACR、6份CPE、5份BMC和20份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料A;
2)抗压中层2材料制备:
将32份回收再生塑料、35份CPVC、5份ACR、5份PS和20份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料B;
3)管体制作:
将由步骤1)中制得的物料A放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗冲击外层1和抗冲击内层3;同时将由步骤2)中制得的物料B放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗压中层2;熔融状态的抗冲击外层1、抗冲击内层3和抗压中层2经分流支架流入同一模具中,再以压缩比为7-28的条件下自模具中压缩挤出,最后经真空定径、牵引和定长切割得到埋地式PVC改性三层结构实壁排水管。
实施例3:
1)抗冲击外层1和抗冲击内层3材料制备:
将69份PVC、5份的ACR、5份CPE、3份ABS和18份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料A;
2)抗压中层2材料制备:
将25份PVC、25份回收再生塑料、28份CPVC、4份ACR、3份ABS和15份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料B;
3)管体制作:
将由步骤1)中制得的物料A放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗冲击外层1和抗冲击内层3;同时将由步骤2)中制得的物料B放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗压中层2;熔融状态的抗冲击外层1、抗冲击内层3和抗压中层2经分流支架流入同一模具中,再以压缩比为7-28的条件下自模具中压缩挤出,最后经真空定径、牵引和定长切割得到埋地式PVC改性三层结构实壁排水管。
以上所述的仅是本发明的优选实施方式,应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。
Claims (10)
1.一种埋地式PVC改性三层结构实壁排水管,其特征在于:包括管体,所述管体为由抗冲击外层(1)、抗压中层(2)和抗冲击内层(3)共挤形成的三层共挤复合管,所述管体的口径最大可达2000-3000mm。
2.根据权利要求1所述的埋地式PVC改性三层结构实壁排水管,其特征在于:所述抗压中层(2)为PVC抗压材料层、回收再生塑料抗压材料层或PVC与回收再生塑料混合抗压材料层中的一种。
3.根据权利要求2所述的埋地式PVC改性三层结构实壁排水管,其特征在于:所述抗冲击外层(1)和抗冲击内层(3)均为PVC抗冲击材料层。
4.根据权利要求1所述的埋地式PVC改性三层结构实壁排水管,其特征在于:所述抗冲击外层(1)、抗压中层(2)和抗冲击内层(3)之间的厚度比为1:1.2-1.3:1。
5.根据权利要求1所述的埋地式PVC改性三层结构实壁排水管,其特征在于:所述管体包括主体部(4)、与主体部(4)一体连接的插接部(5)和承接部(6),所述承接部(6)轴向开设有与插接部(5)外径大小适配的承接槽(61),所述承接槽(61)的底部设有用于安装环状的橡胶圈的橡胶圈安装槽(62)。
6.根据权利要求3所述的埋地式PVC改性三层结构实壁排水管,其特征在于:所述PVC抗冲击材料层、PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层分别由以下成分组成:
所述PVC抗冲击材料层:PVC、ACR、CPE、ABS、CaCO3;
所述PVC抗压材料层:PVC、CPVC、ACR、ABS、CaCO3;
所述回收再生塑料抗压材料层:回收再生塑料、CPVC、ACR、ABS、CaCO3;
所述PVC与回收再生塑料混合抗压材料层:PVC、回收再生塑料、CPVC、ACR、ABS、CaCO3;
其中,所述PVC抗冲击材料层中的ABS可用BMC代替,所述PVC抗压材料层、回收再生塑料抗压材料层和PVC与回收再生塑料混合抗压材料层中的ABS可用PS代替。
7.根据权利要求1至6任一项权利要求所述的一种埋地式PVC改性三层结构实壁排水管的制备方法,其特征在于:包括以下步骤:
1)抗冲击外层(1)和抗冲击内层(3)材料制备:
将64-86份PVC、3-5份的ACR、3-6份CPE、3-5份ABS和5-20份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料A;
2)抗压中层(2)材料制备:
将35-64份PVC、25-35份CPVC、3-5份ACR、3-5份ABS和5-20份CaCO3加入高速混合机中高速搅拌,直至物料温度升至110℃,转入冷却混合机中至温度降至45-60℃时出料,形成物料B;
3)管体制作:
将由步骤1)中制得的物料A放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗冲击外层(1)和抗冲击内层(3);同时将由步骤2)中制得的物料B放入J型双螺杆挤出机中在温度为170-200℃的条件下进行挤出,挤出熔融状态的抗压中层(2);熔融状态的抗冲击外层(1)、抗冲击内层(3)和抗压中层(2)经分流支架流入同一模具中,再以一定的压缩比自模具中压缩挤出,最后经真空定径、牵引和定长切割得到埋地式PVC改性三层结构实壁排水管。
8.根据权利要求7所述的埋地式PVC改性三层结构实壁排水管的制备方法,其特征在于:步骤1)中3-5份的ABS可用3-5份的BMC代替。
9.根据权利要求7所述的埋地式PVC改性三层结构实壁排水管的制备方法,其特征在于:步骤2)中35-64份PVC可用35-64份回收再生塑料或12.5-32份PVC和12.5-32份回收再生塑料混合料代替;3-5份ABS可用3-5份PS代替。
10.根据权利要求7所述的埋地式PVC改性三层结构实壁排水管的制备方法,其特征在于:步骤3)中的压缩比为7-28。
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