The parent drain heat shrinkable tube is used for the insulation protection of the bus of substation, high and low voltage switchgear, which can make the structure of the switchgear compact (shorten the interphase distance) and prevent the occasional short-circuit accident. The mother drain Heat shrinkable tube has the following characteristics:

1, the mother pipe flame retardant strong, with autologous fire extinguishing performance

2, there is a continuous use of heat resistance in the distribution cabinet

3, thick wall thickness, insulation, impact resistance is good

4, the softness is superior, can be covered in the curved mother row. After the overlay, it can also be bent.

The parent drain heat shrinkable tube is usually used for power master, high and low voltage switchgear (10KV, 35KV switchgear), insulation protection of the parent row in the distribution cabinet, and other kinds of copper row insulation protection and pipe waterproof, anti-corrosion.

High temperature heat shrinkable casing According to the use of environment and temperature grade can be divided into: 125 ℃ heat shrinkable tube, 135 ℃ heat shrinkable tube, 150 ℃ heat shrinkable tube, 175 ℃ heat shrinkable Tube, 200 ℃ heat shrinkable tube, 260 ℃ heat shrinkable tube, medical heat shrinkable tube. High temperature heat shrinkable casing has the advantages of high temperature resistance, large mechanical strength, good chemical resistance, etc., widely used in cable insulation protection, end or connection of insulation treatment or stress relief, wire processing cover and insulation protection, solder joint protection, electronic components of the double-wall heat shrinkable tube overlay, resistance, capacitance insulation protection, metal products anti-rust, Anti-corrosion treatment, wire marking or color marking, etc.

High temperature heat shrinkable casing with its excellent performance, not only as aerospace, cutting-edge technology, Military technology Department of Special materials used, but also used in various sectors of the national economy, its application scope has been extended to: metal smelting, construction, electrical and electronic, textile, automotive, machinery, chemical light industry, etc., with the production level of domestic silicone and other raw materials , There will be a huge space for development.

Since the material of the heat shrinkable tube is made of crosslinked polyolefin, the strength of the cross-linked molecular bond also determines the selection of hot shrinkage high temperature heat shrinkable pipe tube, if the crosslinking degree is not high, you can also choose the product of careful addition, because of the use of plasticizers, can imitate the performance of raw materials products, but the shrinkage rate is not high, shrinkage is closely related to the strength of molecular bonds , The strength of the molecular bond is large, the shrinkage rate is high, and the shrinkage is strong. As long as the cross-linked molecular bond is strong, that shrinkage is large, so in the production of heat shrinkable tube into a high elastic state, it can be expanded, in the case of maintaining expansion of rapid cooling, this state is fixed, when used heating, it will change back to the high elastic state, but then the load is gone, it is going to shrink. This is the principle of the heat shrinkable tube.

母排热缩管跟高温热缩套管的特点介绍

母排热缩管用于变电站母线，高、低压开关柜母线的绝缘防护，可以使开关柜的结构紧凑化（相间距离缩短），防止偶发性的短路事故。母排热缩管有以下特点：

1、母排管阻燃性强，有自体灭火性能

2、有在配电柜内连续使用的耐热性

3、壁厚较厚，绝缘性、耐冲击性良好

4、柔软性优越，可覆在弯曲的母排上。被覆后，也可进行弯曲。

母排热缩管通常用于电力母排、高低压开关柜（10KV、35KV开关柜）、配电柜内母排的绝缘保护，以及其他种类铜排的绝缘保护和管类防水、防蚀。

高温热缩套管按使用环境和温度等级可分为:125℃热缩管，135℃热缩管，150℃热缩管，175℃热缩管，200℃热缩管，260℃热缩管，医用热缩管。高温热缩套管具有耐高温、机械强度大、耐化学性好等优点,广泛应用于线缆绝缘保护、端末或连接处的绝缘处理或应力解除,线材加工的被覆与绝缘保护,焊点保护、电子元器件的包双壁热缩管覆,电阻、电容的绝缘保护,金属产品的防锈、防腐蚀处理,电线标示或标色等

高温热缩套管以其优异的性能，不仅作为航空航天、尖端技术、军事技术部门的特种材料使用，而且也用于国民经济各部门，其应用范围已扩展到：金属冶炼，建筑、电子电气、纺织、汽车、机械、化工轻工等，随着国产有机硅等原料生产水平的提高，将蕴藏着巨大的发展空间。

由于热缩管的材料是由交联聚烯烃做的，交联的分子键的强度，也决定着热缩高温热缩管管的选型，如果交联度不高，也可以选用慎加回料的产品，由于增塑剂的使用，可以模仿原料的产品的性能，但收缩率不高，收缩力就是跟分子键的强度息息相关，分子键的强度大，则收缩率高，收缩力度大。只要是交联的分子键强，那收缩率就大，所以在生产时把热缩管加热到高弹态，就可使其扩张，在保持扩张的情况下快速冷却，这种状态就固定住了，在使用时加热，它就会变回高弹态，但这时载荷没有了，它就要回缩。这就是热缩管的原理。