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质量好的聚氯乙烯缠绕管的热熔连接方法!

作者: admin    来源:http://www.laobingguandao.com  时间:2020-03-13    人气:
  优质PVC缠绕管连接技术在连续使用中逐渐成熟,优质PVC缠绕管其热熔合连接包括以下三种方法:相同的热塑性塑料管道连接时,一个特殊的电雷管插入装配,和电熔丝装置由电熔丝连接充电机、管和电雷管装配连接所需的热电阻丝嵌入到生成的保险丝。冷却后,将管道与熔断器连接为一体。具有连接方便、速度快、质量好、外界干扰小等特点。2. 承插热熔连接。为了提高套筒连接的应用压力,还可以在套筒上增加套筒。3.直接热熔连接:加热管道与管件的连接部分,直接进行热熔连接。
  The connection technology of high-quality PVC winding pipe is gradually mature in continuous use. The hot fusion connection of high-quality PVC winding pipe includes the following three methods: when the same thermoplastic pipe is connected, a special electric detonator is inserted and assembled, and the electric fuse device is connected by the electric fuse to the charger, and the thermal resistance wire required for the assembly connection of the tube and the electric detonator is embedded into the generated fuse. After cooling, connect the pipe and fuse as a whole. The utility model has the advantages of convenient connection, fast speed, good quality, small external interference, etc. 2. Socket hot melt connection. In order to increase the application pressure of the sleeve connection, the sleeve can also be added on the sleeve. 3. Direct hot-melt connection: the connection part of heating pipe and pipe fitting is directly connected by hot-melt.
  优质聚氯乙烯缠绕管聚乙烯属于结晶性热塑性塑料的一部分。焊接主要是由热塑性塑料制成的,随着温度的变化和状态的不同而变化。热熔塑料的重要温度参数包括玻璃化转变温度Tg、粘流温度Tf、晶体熔化温度Tm和热分解温度Td。在晶体熔化温度Tm以上或非晶塑料粘性流动温度Tf以上的条件下,固体材料熔化为粘性流体。因此,Tm或Tf与Td之间的温度区间定义了热塑性塑料加工的温度窗口。塑料焊接也是在这种温度窗口下进行的。热熔温度210-240。
双扣聚氯乙烯增强管
  High quality PVC winding pipe polyethylene belongs to a part of crystalline thermoplastic. Welding is mainly made of thermoplastic, which changes with the change of temperature and state. The important temperature parameters of hot melt plastics include TG, TF, TM and TD. When the melting temperature of crystal is above TM or the viscous flow temperature of amorphous plastic is above TF, the solid material melts into viscous fluid. Therefore, the temperature range between TM or TF and TD defines the temperature window of thermoplastic processing. Plastic welding is also carried out in this temperature window. Hot melt temperature 210-240.
  纯塑料管尤其是大口径塑料管道持续低温环形压力的作用下,易产生局部缺陷,造成的应力集中快速裂纹(即时几百米公里以上),所以PVC的优质盘管当前管塑料快速开裂阻力提出了很高的要求,和低碳钢不是脆性断裂的问题,钢网的存在使塑性变形和应力都不使其产生快速开裂的临界点。因此,从理论上讲,钢丝网骨架聚乙烯复合管不存在快速开裂的问题。钢丝网骨架聚乙烯复合管具有良好的耐温性,其使用温度范围内的塑料管强度一般随温度的降低而降低,温度每提高10℃强度就增加10%以上。优质PVC绕线管由于钢丝网骨架聚乙烯复合管道强度大约2/3是由钢丝网骨架承担,所以它的力量使用温度的增加和减少的程度低于任何一种纯塑料管。实验结果表明,钢丝网架聚乙烯复合管的强度随温度的增加而降低5%以下。
  Under the action of continuous low-temperature annular pressure, pure plastic pipes, especially large-diameter plastic pipes, are prone to local defects, resulting in rapid stress concentration cracks (more than several hundred kilometers in real time). Therefore, the current international high-quality PVC coil pipe plastic rapid cracking resistance puts forward high requirements, and low-carbon steel is not a brittle fracture problem, The critical point at which plastic deformation and stress do not cause rapid cracking due to the existence of steel mesh. Therefore, theoretically speaking, there is no problem of rapid cracking in the steel wire mesh skeleton polyethylene composite pipe. The polyethylene composite pipe with steel wire mesh framework has good temperature resistance. The strength of plastic pipe in the range of using temperature generally decreases with the decrease of temperature, and the strength increases by more than 10% with the increase of temperature by 10 ℃. The strength of high-quality PVC winding pipe is about 2 / 3 of that of steel wire mesh skeleton polyethylene composite pipe, so the increase and decrease of its strength using temperature is lower than that of any pure plastic pipe. The experimental results show that the strength of the composite pipe decreases by less than 5% with the increase of temperature.

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