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How to choose dual wall heat shrink tube of automobile wire harness and its aging treatment

Time:2019/1/4 posted:Kehong Enterprises Co.,Ltd.

automotive four standard double-wall heat shrinkable tube lights modification


1, the standard light type in strict accordance with the standard automotive lighting, upgraded double lens xenon light concentration, stability, do not scatter, non-glare, greatly enhance the lighting effects, enhance traffic safety, unrestricted examined. Standard light near the cutting line must reach neat, parallel to the ground, the effect of columnar beam, independent of the original car beam light beam and the lens in a horizontal line, focus error can not exceed 1.5CM.

2, sealing better, not water into the fog, otherwise it will affect lights effect.

3, security. Not destroy the original structure of the line and to ensure the integrity and stability of the original car circuit, harness connector after soldering must be double-walled heat shrink tubing with heat-shrinkable plastic tube up to avoid danger of ignition phenomenon of leakage.

4, post services. The transformation of a person responsible will provide you with the fullest possible post-service. To know that even the most perfect products will have problems of the day.


What is the double-wall heat shrink tubing fatigue aging, what double-wall heat shrinkable tube ozone aging is characterized by?

The double-walled heat shrink tubing alternating stress or strain action, mechanical property deteriorates gradually, resulting in a phenomenon called fatigue aging value.

Ozone aging due to ozone is referred to ozone aging, aging and other factors produced by different, there is a surface rubber aging reaction, the rubber surface of a rubber unstressed stretched in a environment exposed to, rubber double-walled heat shrink tubing is reacted with ozone until after termination of the reaction the whole surface, forming a layer similar gray spray cream which tarnish on the surface.

The stretched rubber in the generation of ozone aging, the surface of the rubber to ozone cracking producing a critical stress is present, or when the rubber is stretched below the threshold, ozone aging occurs when no cracks. Gum when generating ozone cracking, crack direction perpendicular to the direction of the force, cracking the light is different from the oxidative aging induced cracks. It should be noted that, when generating ozone aging, ozone cracking is difficult to see the generated light oxidative aging crack generated in the multi similar rubber.

As a professional supplier of industrial insulation protection products, solve this problem, research and development over a long period of experimentation and research and development, double-wall heat shrink tubing halogen-free environment consists of radiation cross-linked polyolefin and hot melt adhesive double, the outer layer of poly olefin excellent insulation, flame retardant, electrical physical and chemical properties, can buffer the inner hot melt adhesive sealing strength and mechanical strain. Its main function is insulation, sealing, waterproof, corrosion, gas leak and the like, widely used in various harnesses, wire and cable insulation and the metal rod sealing etc., water preservation, and other fields.

Its shrink ratio up to 3: 1, the level of environmental protection in line with the EU RoHS standards, and its biggest advantage is that it can fully adapt to the wire and cable protective effect outdoors, resistance to ultraviolet radiation and its high-quality raw materials and the quality of his own superior resistance aging, its use in quality assurance, lifting the construction team of engineers to worry about.

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E-mail:lily@gzhelectric.com



如何选择汽车线束双壁热缩管及其老化处理


汽车用双壁热缩管改装车灯的4个标准


1、光型标准,严格按照汽车照明标准,升级双氙透镜后光线集中,稳定,不散射,不刺眼,大幅度提升照明效果,提升行车安全,年审不受限制。标准的近光切割线一定要达到左右整齐,平行于地面,远光效果呈柱状,原车独立远光与透镜远光在一条水平线上,焦点误差不能超过1.5CM。

2、密封要好,不能进水进雾,否则会影响车灯效果。

3、安全性。不能破坏原车线路和结构,保证原车电路的完整和稳定,线束接头都必须焊接后用带胶双壁热缩管套热缩管起来,以避免漏电打火的现象产生的危险。

4、后期服务。一个负责任的改造者会为您提供尽可能充分的后期服务。要知道即使是最完美的产品也会有出问题的那天。


什么是双壁热缩管疲劳老化、双壁热缩管臭氧老化的特点是什么?

双壁热缩管交变应力或应变作用下,物理机械性能逐渐变坏,以致用价值的现象称为疲劳老化。

由臭氧引起的老化称为臭氧老化,与其他因素所产生的老化有所不同,主要有胶的臭氧老化是一种表面反应,未受应力的橡胶表面拉伸的橡胶暴露在a环境中时,橡胶双壁热缩套管与臭氧反应直到表面全反应完后终止,在表面上形成一层类似喷霜状的灰色的其失去光泽。

受拉伸的橡胶在产生臭氧老化时,表面要产橡胶的臭氧龟裂有一个临界应力存在,当橡胶的伸长或低于临界值时,在发生臭氧老化时是不会产生龟裂的。胶在产生臭氧龟裂时,裂纹的方向与受力的方向垂直,龟裂与光氧老化致龟裂的不同之处。但应当注意,在多方的橡胶产生臭氧老化时,所产生的臭氧龟裂很难看出光氧老化所产生的龟裂相似。

作为专业的工业绝缘防护产品的供应商,针对这一问题,研发部经过长期的实验和研发,无卤环保双壁热缩管由辐射交联聚烯烃和热熔胶双层构成,外层聚烯烃绝缘、阻燃、理化电气性能优异,内层热熔胶能缓冲机械应变和密封性强。其主要功能是绝缘、密封、防水、防腐、防漏气等,广泛应用于各类线束、电线电缆和金属棒等密封绝缘、防水防腐等领域。

其热缩倍率高达3:1,环保级符合欧盟RoHS标准、且其最大优势在于可以完全适应于户外的电线电缆防护作用,耐紫外线照射,且其原材料的优质又使他本身的质量上乘,耐老化、在使用中其质量得到保证,解除了施工队工程师们的后顾之忧。

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