Our domestic manufacturers of cold shrinkable cable accessories generally do not have a large amount of spare stock. Even the spare stock is generally shipped or used up within half a year. Why.

This is because the cold shrinkable cable accessories are mainly made of silicone rubber after vulcanization and expansion, which is a kind of polymer material, which can not avoid the aging problem of polymer material. There are many aging factors, temperature cycle, UV, external materials, etc., which is an irresistible process of polymer material. So from the beginning of raw material production, the material begins to enter the aging cycle. Especially after the expansion of the cold shrinkable cable, aging will greatly increase the shrinkage permanent deformation rate of the cold shrinkable pipe. The contraction range of the cold shrinkable cable accessories is limited. If the permanent deformation is too large and exceeds the design allowance, the contraction may not be in place, and the installation quality problem may occur. Mainly due to this factor, the cold shrink cable accessory is a product with a shelf life of not too long. Generally speaking, there will be significant permanent deformation six months after the expansion of the cold shrink cable accessory. Therefore, we suggest that the customer use it up within half a year after purchase.

Before that, our customers also bought a large number of cold shrink cable accessories, and they left several sets unused for a year and a half. When they opened them, they found that the insulation pipe was a little shrunk. That's why we've described it above.

冷缩电缆附件为何不能大量备库存

我们国内生产冷缩电缆附件的厂家一般都不会大量的备库存，即使是备库存也是一般在半年内要出货或者使用完,这是为何呢。

这是因为冷缩电缆附件主要由硅橡胶硫化后扩张而成，是一种高分子材料，这就避免不了高分子材料老化题目，老化因素良多，温度轮回，紫外线，外部物质等等，这是高分子材料不可抗拒过程。所以从原材料制作开始，材料就开始进入老化周期。特别是冷缩电缆扩张后，老化会大大增加冷缩管的收缩永久变形率。冷缩电缆附件本身收缩范围是有限的，假如永久变形过大，超过了设计余量，就可能发生收缩不到位安装质量题目。主要是这个因素，导致冷缩电缆附件是一款保质期不会太长产品，一般来讲，冷缩电缆附件扩张后半年之后，就会有显著永久变形，因此我们建议客户在购买后，在半年之内使用完。

此前我们有客户也是大量购买冷缩电缆附件后，用剩下几套一年半未使用，打开时就会发现绝缘管有一点收缩了。这就是我们上面介绍为何会产生这种情况。

KeHong Enterprises Co.,Ltd.

E -mail：gavin@gzhelectric.com

Tel:+86-20-82586869, Mobile: +8615918777767

Wechat:008615918777767

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