Why is nylon cable ties easy to be brittle? -Nylon cable ties-low temperature cable ties-high temperature cable ties-cable ties manufacturers-automobile cable ties-Zhejiang Zhonggu Plastic Co., Ltd.
Why is nylon cable ties easy to be brittle?
2019-01-16 14:36:00 Source: Zhonggu Plastics Browse: 395
Analysis of the reason why nylon cable tie is easy to break
1. Manufacturing process issues:
The relationship between the injection molding process is also very important. In order to facilitate the molding process, increase the barrel temperature and speed up the injection molding time, etc., which will cause quality problems in the cable tie body.
2. Too long storage time:
PA66 is an engineering plastic, and all plastics have an aging problem..
The molecular structure of the cable tie will be degraded and oxidized when stored for a long time, coupled with the loss of water, it will also cause the phenomenon of brittle fracture of the nylon cable tie.
3. The temperature is too high or too low:
The raw material of nylon cable tie is PA66, which has poor low temperature resistance. It is normal if the weather is cold in winter and breaks..
If you want to solve this problem, you can add some raw materials that are more resistant to low temperatures and have better compatibility with nylon 66..Nylon cable ties will quickly turn yellow and break under high temperature conditions.
Water replenishment measures should be taken in time.A watering can can be used to spray a certain amount of pure water to relieve dehydration
4. Manufacturing raw material issues:
Furthermore, in order to reduce costs, some companies adopt secondary pelletizing modified products. These materials will inevitably undergo multiple high-temperature shearing moldings. The molecular structure of the raw materials themselves has undergone drastic changes, and the performance has been reduced by more than half..
In addition to the degradation and oxidation during the period.Nylon cable tie must ensure its flexibility, usually nylon has 3–8% water absorption, when the molecular structure is destroyed, no matter how cooking, other water absorption methods will not help, which determines its brittleness, of course it is easy to break.
5. Sunlight is not protected from light:
After being exposed to the sun, there will be fog, or moisture, in the nylon strap packaging bag, as if it has just been picked up from the water..
Because nylon has the properties of water absorption and release, if it is used or stored under such high temperature conditions, the water in it will quickly evaporate..
Once it loses its proper moisture, its performance will change and its tensile strength will decrease
6. The selected specification is inappropriate:
The tensile force that each specification of nylon cable tie can withstand is different, the smaller the width, the tensile force that can be withstood is different, if an inappropriate specification is selected, it is prone to breakage..
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