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双扣聚氯乙烯增强管道的发展及类型

作者: laobingguandao    来源:http://www.laobingguandao.com  时间:2020-09-08    人气:
(一)双扣聚乙烯增强管道的发展
(1) Development of double buckle polyethylene reinforced pipe
双扣聚乙烯提高管是一个由各种工序方法生产的、具有各种结构和特点及各种主要用途的系列种类环氧树脂,已占世界合成树脂生产量的五分之一,居首位。hdpepE管的应用源自20时代40年代,起初用作有线电视线软管和矿井无压泄水(采用低密度聚乙烯管)。20时代50年代前中期,聚乙烯管用以给水(开始采用聚乙烯塑料管)。20时代60年代前中期开始采用聚乙烯管输配燃气(采用中聚乙烯塑料管)。目前hdpe给水管材已成为在pVc -U管之后,全世界产销量第二大的塑料管材种类。广泛用以天然气、给水、排污口、农田灌溉、油气田、矿山企业、化工厂及邮电通等行业。目前,全世界hdpe给水管材年产销量250万t以上,而且增速飞快。
Double buckle polyethylene riser pipe is a series of epoxy resin produced by various process methods, with various structures and characteristics and various main uses. It has accounted for one fifth of the world's synthetic resin production, ranking first. The application of hdpepe pipe originated from the 1940s and was initially used as cable TV line hose and mine non pressure drainage (using low density polyethylene pipe). In the early and mid-1950s, polyethylene pipes were used for water supply (polyethylene plastic pipes began to be used). In the early and mid-1960s, polyethylene pipe (medium polyethylene plastic pipe) was used for gas transmission and distribution. At present, the sales volume of PVC pipe has become the second largest in the world. It is widely used in natural gas, water supply, sewage outlets, farmland irrigation, oil and gas fields, mining enterprises, chemical plants, posts and telecommunications and other industries. At present, the annual sales volume of HDPE water supply pipes in the world is more than 2.5 million tons, and the growth rate is fast.
(二)聚乙烯管道的类型
(2) Types of polyethylene pipes
聚乙烯管可分成实壁管和结构壁管两种。实壁管可用来压力管,也用来非压力管。总是依照hdpe材料的特点对hdpe实壁管进行分类管理。
Polyethylene pipe can be divided into solid wall pipe and structural wall pipe. Solid wall tubes can be used for pressure and non pressure pipes. According to the characteristics of HDPE materials, HDPE solid wall pipes are always classified and managed.

1.根据环氧树脂的相对密度分
1. According to the relative density of epoxy resin
习惯上依照hdpe环氧树脂的相对密度将聚乙烯管分成高密度及线形低密度聚乙烯(LDPE及LLDPE)管(相对密度为0.900--0.930g/cm3),中密度hdpe(MDPE)管(相对密度为0.930一0.940g/cm3)和聚乙烯塑料(HDPE)管(相对密度为0.940 --0.9658/cm3) 。
According to the relative density of HDPE epoxy resin, polyethylene pipes are usually divided into high-density and linear low-density polyethylene (LDPE and LLDPE) pipes (relative density is 0.900-0.930g / cm3), medium density HDPE (relative density is 0.930-0.940g/cm3) and polyethylene plastic (HDPE) pipes (relative density is 0.940-0.9658/cm3).
2.根据材料的长时间静液压机抗压强度等级分
2. According to the long-term compressive strength grade of hydrostatic press
目前ISO标准组织,根据聚乙烯管材料预测分析的长时间静液压机抗压强度的置信上限δLpl (20℃, 50年,97.5%),对给水管材及其原材料进行了分类管理和取名,有pE 31, PE40, pE 62, pE 80和pE 1005个级。目前,输送机天然气应采用pE 80和PE100等級的中或聚乙烯塑料缠绕管;给水通常采用pE 62、pE 80和pE 100等級的中或聚乙烯塑料管,但pE 62已逐步趋向淘汰;pE 31和pE 40等級的低密度聚乙烯管或线形低密度聚乙烯管通常用以管灌。根据主要用途不同,双扣聚氯乙烯增强管道应着有不同的颜色。典型性的为软管天蓝色,燃气管黄白色或黑管上添加相对颜色的条带。一般根据标准,对于使用期长,性能要求高的压力管主要用途,如燃气管、市政工程排水管道等,要求采用明确等級证明的混原料(已带有必要改性剂和色浆的hdpe粒料)。
At present, according to the upper confidence limit δ LPL (20 ℃, 50 years, 97.5%) of the long-term hydrostatic press compressive strength predicted and analyzed by the ISO standard organization, the water supply pipes and their raw materials are classified and named, including PE 31, PE40, PE 62, PE 80 and PE 1005. At present, PE 80 and PE 100 medium or PE plastic winding pipes should be used for natural gas of conveyor; PE 62, PE 80 and PE 100 grade medium or PE plastic pipes should be used for water supply, but PE 62 has been gradually phased out; PE 31 and PE 40 grade low density polyethylene pipes or linear low density polyethylene pipes are usually used for pipe irrigation. According to the main use, the double buckle PVC reinforced pipe should have different colors. It is typical that the hose is sky blue, and the gas pipe is yellow white or black with relative color bands. Generally, according to the standard, for the main uses of pressure pipes with long service life and high performance requirements, such as gas pipes, municipal engineering drainage pipes, etc., it is required to use mixed raw materials with clear grade certification (HDPE granular materials with necessary modifier and color paste).

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