What are the characteristics of automotive wire harness tape? Why do automotive wire harness tape ne

What are the characteristics of automotive wire harness tape?

 Why do automotive wire harness tape need these features?

The Cinatape Technology Co., Ltd.company makes a detailed analysis on the two issues of which characteristics the automotive wire harness tape needs and why it needs these characteristics:

Temperature resistance

The low temperature resistance requirement of the whole vehicle harness is - 40 ℃. The main difference is that the high temperature resistance requirement is different. The environmental temperature of different positions on a car body is different, which leads to different high temperature resistance requirements of the wire harness tape at different positions. The high temperature resistance requirement of the tape in the engine room is 105 ~ 150 ℃, and that in the cab is 85 ~ 105 ℃. The following is the specific analysis.

For the wiring harness in the engine compartment, the ambient temperature in the engine compartment is the highest. In some specific locations, such as above the engine block, the maximum storage temperature can reach 135 ℃, and the maximum storage temperature under the hood can also reach 95 ℃. Therefore, the place nearest to the engine has high requirements for the high temperature performance of the adhesive tape. The tape used on the engine harness generally has two functions: there is no protective sleeve for the wire harness, and the tape plays the main protective role. At this time, the high temperature resistance requirement of the tape must reach 130 ℃, the wire harness has protective sleeve, and the tape mainly plays the role of fixing the protective sleeve. At this time, the high temperature resistance requirement of the tape must be above 105 ℃. Indoor wiring harness, such as instrument panel wiring harness, indoor floor wiring harness, ceiling wiring harness and four door wiring harness, can meet the requirements when the high temperature resistance of the tape used in the wiring harness reaches 85 ℃.

Flame retardancy

Due to the different materials of dry tape, the flame retardant performance of tape is also different. Some are flame retardant, some are not flame retardant, and some are combustion supporting. The best tape for indoor wiring harness is flame retardant PVC tape.

Wear resistance

In the use of automotive wire harness tape, the rough surface and sharp edge may scratch the tape, resulting in the loss of insulation protection, binding, sealing and other properties of automotive wire harness tape, and even some safety accidents. The automotive wire harness tape used in these special positions must have high wear resistance.

Noise reduction

In the instrument panel wiring harness and four door wiring harness, the automotive wire harness tape is pasted with sheet metal or some hard materials when it is installed. At the same time, some main lines or branch lines or even connectors on the automotive wire harness tape can not be completely fixed. In actual driving, the automotive wire harness tape and hard materials will touch and cover. The noise generated by the touch and cover will make the driver or passengers very uncomfortable. At this time, the local automotive wire harness tape should have good noise reduction performance .

Compatibility of insulating layer

The adhesive systems of common tapes are generally acrylic adhesive, rubber, synthetic rubber, acrylic acid, polyacrylic acid vinegar pressure sensitive adhesive, etc. in the process of wire bundle binding, some phenomena of poor compatibility may appear. The compatibility of common tapes to halogen-free wire insulation layer is not very good, which must be considered in the design.

Low foggy

The tape used on indoor wiring harness must have low fog volatility. If the low fog of wiring automotive wire harness tape does not meet the requirements, when the ambient temperature rises, the substance and odor emitted by the tape will stimulate the smell and vision of indoor personnel, reduce the comfort of drivers and passengers, enhance the fatigue of drivers, and increase the probability of safety accidents.

Oil and corrosion resistance

The working environment of the engine compartment is very complex, acid parts, oil and other substances pose a great threat to the automotive wire harness tape. The complex working environment will reduce the performance and service life of the adhesive tape, so the automotive wire harness tape used for engine wiring harness and engine compartment wiring harness must have high oil and corrosion resistance.