Adhesive Tape for Cable Insulation at High Temperatures
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Solution Overview
Problem
Existing self-adhesive tapes with pressure-sensitive adhesives based on natural rubber and styrene block copolymers fail to achieve compatibility with PVC and polyolefin cable sheathings in high-temperature applications, leading to insulation damage and potential electrical failures in automotive systems.
Innovation Solution
Development of an adhesive tape with a pressure-sensitive adhesive system based on styrene block copolymers and hydrogenated adhesive resins, processed from the melt, which includes vinyl aromatic block copolymers and hydrogenated resin components, along with additives for enhanced compatibility and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If pressure-sensitive adhesives based on natural rubber and styrene block copolymers are used for cable wrapping, then the adhesive tape provides initial bonding capability, but compatibility with PVC and polyolefin cable sheathings deteriorates at high temperatures leading to insulation damage
Solution Approach 1:
The adhesive composition is modified by changing the chemical parameters - replacing natural rubber with synthetic polydiene rubber and adjusting the polymer composition ratio. This parameter change maintains adhesive bonding capability while improving thermal stability and compatibility with cable sheathings at elevated temperatures up to 105°C
Solution Approach 2:
The adhesive forms a composite material system combining synthetic polydiene rubber with specific polymer components that have been developed to be compatible with both PVC and polyolefin cable sheathings. This composite approach allows the adhesive to bond effectively to different cable materials without causing insulation damage
2Strength
If adhesive tapes are used for wrapping cable harnesses in vehicles, then mechanical protection and insulation are provided, but at high temperatures the adhesive causes embrittlement and damage to cable insulation
Solution Approach 1:
The adhesive formulation is designed to resist the harmful thermal effects that normally cause embrittlement. By using heat-stable synthetic rubber and compatible polymers, the adhesive actually protects the cable insulation from thermal degradation rather than causing it, converting the potential harm of high-temperature exposure into a beneficial protective effect
3Ease of manufacture
If conventional adhesive tapes are selected for cable protection, then initial bonding is achieved, but long-term reliability deteriorates due to incompatibility reactions between adhesive and cable materials
Solution Approach 1:
The adhesive's chemical composition parameters are optimized to ensure long-term stability. By using synthetic polydiene rubber and specifically formulated polymers compatible with automotive cable materials, the adhesive maintains its bonding properties and protective function throughout the entire vehicle service life without degradation or adverse reactions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adhesive tape maintains insulation integrity and prevents damage to cables when exposed to high temperatures, meeting the 3000-hour compatibility test standards for both PVC and polyolefin sheathings, ensuring reliable electrical functionality.
Implementation Method 1
an adhesive tape, in particular for wrapping cables, made of a textile carrier and an adhesive coated thereon at least on one side made of at least one vinyl aromatic block copolymer and an at least partially hydrogenated adhesive resin
Data Source
AI summary
Adhesive tape, especially for wrapping cables, consisting of a textile carrier and an adhesive compound coated on at least one side, consisting of at least a vinyl aromatic block copolymer and an at least partially hydrogenated adhesive resin.