Double-walled adhesive heat shrinkable tube is basically improved in the heat shrinkable tube, the heat shrinkable tube in the actual use of the main role of insulation protection, heat shrinkable tube after compression will be firmly wrapped on the object used, but the fact that the changes in the environment, temperature changes and so on can not be prevented, Therefore, it is difficult to ensure that the heat shrinkable pipe and the maintenance of the object between the complete and not a little gap, usually used for insulation, these will not have any effect on the protective function of the product, but once the cover object can not touch the water, can not touch a little air when the heat shrinkable tube is not practical, At this time, it is necessary to have a possible complete supplement to the side gap of the product presentation, so the development of a double-walled adhesive heat shrinkable pipe products.

Eva Hot Melt Adhesive is a non-solvent, no moisture, 100% solid melt of the polymer, at room temperature for the solid, heating melt to a certain degree of heat shrinkable tube into a liquid adhesive that can flow and has some viscosity, it melts into a light brown translucent body or white.

Hot Melt Adhesive Important components, that is, the base resin is ethylene and vinyl acetate in high pressure copolymerization, and then with adhesives, viscosity regulators, antioxidants and other made of hot melt adhesive. Eva Hot Melt Adhesive has the following features:

1, at room temperature is usually solid, heating to a certain extent when molten into a liquid, once cooled to below the melting point, and agile into a solid, (that is, solidified);

2, the application, only the hot melt adhesive heating melted into the required liquid, and applied to the sticky object, after compression in how many seconds can be achieved bonding curing, within a few minutes can reach the level of hardening cooling and drying;

3, glue applied to the adhesive on the cooling and curing of the adhesive layer, but also to heat the melt, from the new into the adhesive body and the adhesive bonding double-walled heat shrinkable tube, there is a certain degree of re-stickiness;

4, with fast curing, low pollution, strong adhesion, adhesive layer has a certain flexibility, hardness, but also a certain degree of toughness.

Fluorine Rubber heat shrinkable pipe

125℃ chip identification Heat shrinkable tube is based on thermoplastic polyolefin, the addition of non-toxic substances flame retardants and additives synthesized into composite polymer materials, extruded into tubular, through gamma-ray irradiation or high-energy electron beam bombardment, linear molecular part of the chain produced cross-linking, become a "shape memory" of "thermosetting" materials, Heat and expand the diameter to several times before cooling the shaping. If reheated to 80℃~120℃, the diameter of the heat-shrinkable casing is reduced to the pre-expansion size. Thermal shrinkage identification tube is on the basis of polyolefin heat shrinkable tube, after special treatment, so that its surface can adapt to needle type, heat transfer and laser engraving three kinds of printer random typing, its core high temperature heat shrinkable tube value lies in the permanent identification. "Color code firmness" is one of the basic indexes to measure whether the thermal shrinkage identification tube is superior to other marking methods, mainly characterized by the physicochemical and electrical properties of the heat shrinkable tube, the adhesion of the color code on the substrate (wear resistance, abrasion resistance or scratch resistance), solvent resistance, color code and the aging resistance of the substrate. Continuous operating temperature: -55℃~125℃, Minimum shrinkage temperature: 80 ℃, lowest total shrinkage temperature: 110℃.

Characteristics of fluorine rubber thermal shrinkage pipe

• Shrinkage ratio 1.7:1 or 4:1

• High flame retardant, good toughness, excellent physical properties and chemical corrosion resistance

Fluorine rubber thermal shrinkage tube temperature range

• Continuous use temperature: -55℃~280℃

• Minimum starting shrinkage temperature: 260 ℃

• Minimum full shrinkage temperature: 300 ℃

For more information, please contact to

lily@gzhelectric.com

双壁涂胶热缩管与标识热缩管材质对比

双壁涂胶热缩管是在热缩管的基本上改良而来的，热缩管在实际利用中主要是起绝缘保护的作用，热缩管在压缩之后会牢牢地包裹在被使用的物体上，然而事实中环境的变化、温度的变更等都不可防止，所以很难保障热缩管与被维护的物体之间完整不一点点空隙，通常用于绝缘的时候这些都不会对产品的保护机能有什么影响，但是一旦被掩护物体不能接触水、不能接触一点空气的时候热缩管就不实用了，这时候就须要有一种可能完全补充旁边缝隙的产品呈现，于是便研制开发了双壁涂胶热缩管产品。

EVA热熔胶是一种不需溶剂、不含水份、100％的固体可熔性的聚合物，在常温下为固体，加热熔融到必定程度热缩管变为能流动且有一定粘性的液体粘合剂，其熔融后为浅棕色半透明体或本白色。

热熔胶重要成分，即基础树脂是乙烯与醋酸乙烯在高压下共聚而成的，再配以增粘剂、粘度调节剂、抗氧剂等制成热熔胶。EVA热熔胶有以下特色：

１、在室温下通常为固体，加热到一定程度时熔融为液体，一旦冷却到熔点以下，又敏捷成为固体，（即又固化）；

２、应用时，只有将热熔胶加热熔融成所需的液态，并涂抹在被粘物体上，经压合后在多少秒钟内就可实现粘结固化，几分钟内就可到达硬化冷却干燥的水平；

３、胶液涂抹在被粘物上冷却固化后的胶层，还能够再加热熔融，从新变为胶粘体再与被粘物粘接双壁热缩管，存在一定的再粘性；

４、具备固化快、公害低、粘着力强，胶层既有一定柔性、硬度、又有一定的韧性。

氟橡胶标识热缩管

125℃片式标识热缩管是以热塑性聚烯烃为基材，添加不含毒性物质的阻燃剂和助剂合成为复合高分子材料，挤出成管状，经γ射线辐照或高能电子束轰击后，线型分子部分链段产生交联，成为具有“形状记忆”的“热固性”材料，加热并将直径扩张至原来的数倍后冷却定型。如果重新加热到80℃～120℃，热缩套管的直径又会回缩到扩张前的尺寸。热缩标识管是在聚烯烃热缩管的基础上，经过特殊处理，使其表面能够适应针式、热转移和激光刻字三种打印机的随机打字，其核心高温热缩管价值在于永久标识。“色码牢固性”是衡量热缩标识管是否优于其它标识方式的基本指标之一，主要以热缩管的理化电气性能、色码在基体上的附着性（耐磨性、耐擦性或耐刮性）、耐溶剂性、色码和基体的耐老化性能来表征.连续工作温度：-55℃~125℃,最低收缩温度：80℃,最低完全收缩温度：110℃.

氟橡胶热缩管特点

·收缩比1.7：1或4：1

·高阻燃、韧性好，优异的物理性能和耐化学腐蚀性能

氟橡胶热缩管温度范围

·连续使用温度：-55℃～280℃

·最低起始收缩温度：260℃

·最低完全收缩温度：300℃

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