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Transparent double-layer heat shrinkable sheathing

A heat-shrinkable sleeve and sleeve technology, applied in the direction of electrical components, etc., can solve the problem that the internal pipeline connection cannot be detected, the heat-shrinkable sleeve cannot meet the special requirements of the performance of the heat-shrinkable sleeve, and the heat-shrinkable sleeve cannot be monitored. Socket quality and other issues to achieve the effect of reducing potential safety hazards, preventing corrosion and ensuring quality

Active Publication Date: 2012-03-28
SHANGHAI CHANGYUAN ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that in the prior art, the heat-shrinkable sleeve cannot meet the special requirements for the performance of the heat-shrinkable sleeve in a specific field, and the connection of the internal pipeline cannot be detected from the outside of the heat-shrinkable sleeve, so that the heat-shrinkable sleeve cannot be monitored. Technical issues such as the socket quality of the shrink sleeve

Method used

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  • Transparent double-layer heat shrinkable sheathing
  • Transparent double-layer heat shrinkable sheathing
  • Transparent double-layer heat shrinkable sheathing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, take 90.5 kg of thermoplastic polyolefin materials; 1.5 kg of pentaerythritol ester; 5 kg of PE wax; Type modified polyolefin materials.

[0025] Next get 65 kilograms of polyamide hot-melt adhesives; 35 kilograms of N, N '-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hydrazine are mixed into a hot-melt adhesive layer.

[0026] Then the above-mentioned crystalline modified polyolefin material is placed on the outer layer, the hot melt adhesive layer is placed on the inner layer, and melted and co-extruded by special equipment to form a double-layer casing.

[0027] Finally, the double-layer sleeve is expanded and shaped to obtain a transparent double-layer heat-shrinkable sleeve of the present invention.

Embodiment 2

[0029] First take 95 kg of thermoplastic polyolefin materials; 1 kg of dilauryl thiodipropionate; 1 kg of silicone resin; Modified polyolefin material according to cross-linked crystalline form.

[0030] Next get 80 kilograms of polyamide hot-melt adhesives; 20 kilograms of pentaerythritol esters, mix into hot-melt adhesive layer.

[0031] Then the above-mentioned crystalline modified polyolefin material is placed on the outer layer, the hot melt adhesive layer is placed on the inner layer, and melted and co-extruded by special equipment to form a double-layer casing.

[0032] Finally, the double-layer sleeve is expanded and shaped to obtain a transparent double-layer heat-shrinkable sleeve of the present invention.

Embodiment 3

[0034] First take 98 kilograms of thermoplastic polyolefin materials; 0.5 kilograms of N,N,-di(2-naphthyl)-p-phenylenediamine; 1 kilogram of silicone resin; 0.5 kilograms of trimethylolpropane trimethacrylate, mixed through high energy A crystalline modified polyolefin material that is cross-linked by irradiation with malarium rays (electron accelerator or cobalt 60).

[0035] Next, get 99 kilograms of polyamide hot-melt adhesive; 1 kilogram of dilauryl thiodipropionate, and mix it into a hot-melt adhesive layer.

[0036] Then the above-mentioned crystalline modified polyolefin material is placed on the outer layer, the hot melt adhesive layer is placed on the inner layer, and melted and co-extruded by special equipment to form a double-layer casing.

[0037] Finally, the double-layer sleeve is expanded and shaped to obtain a transparent double-layer heat-shrinkable sleeve of the present invention

[0038] Please refer to Table 1, which shows the performance test table of pro...

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Abstract

A transparent double-layer heat shrinkable sheathing comprises a sheathing inner layer and a sheathing outer layer sheathed above the sheathing inner layer; the sheathing outer layer is a crystalline modified polyolefin material layer and is prepared by the following substances by weight: 90.5-98% of thermoplastic polyolefin material, 0.5-1.5% of outer layer antioxidizer, 1-5% of lubricating and processing aid and 0.5-3% of crosslinking assistant; the sheathing inner layer is a hot melting glue layer and is prepared by the following substances by weight: 65-99% of polyamide hot melt flue and 1-35% of inner layer antioxidizer. The transparent double-layer heat shrinkable sheathing is improved in thermal ageing performance, wear-resisting property, low temperature flexibility, solvent-resistant preparation and other aspects; the transparent design of the heat shrinkable sheathing brings convenience to the monitoring of the connection condition of components from the outside of the heat shrinkable sheathing, and reduces potential safety hazard; in addition, the formula in the invention is designed by international environment-friendly standard, thus conforming to the requirement of green environment-friendly automobile advocated by the current internationalization.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a transparent double-layer heat-shrinkable sleeve. Background technique [0002] Heat-shrinkable materials, also known as polymer shape memory materials, are intelligent materials that combine polymer materials with radiation processing technology. Ordinary polymer materials such as polyethylene, polyvinyl chloride, etc. are usually linear structures. After being irradiated by electron accelerators and other radioactive sources, these materials will have a unique "memory effect". The material can re-shrink back to its original shape when heated. [0003] The production of heat-shrinkable materials requires a series of processes such as mixing, molding, irradiation, expansion, and gluing. The basic principle of heat shrinkable materials is to use the shape memory effect of polymer materials to make them. Macromolecular materials such as polyolefin substrates undergo a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G3/00
Inventor 王志
Owner SHANGHAI CHANGYUAN ELECTRONICS MATERIAL