How should one choose polyurethane materials?
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I am a senior student majoring in polymer materials, and I have just started my internship at a company. Our company produces a type of bellows that is formed using the elastic deformation of polyurethane. Therefore, high requirements are placed on the rebound performance of polyurethane rubber. At present, a polyurethane bulging die becomes deformed after just over 100 extrusions, and the resulting products do not meet the required standards. I am now looking for a polyurethane expansion die with high resilience and minimal permanent deformation. Extend the service life. I’ve just started working at the company and would like to do my best. I humbly ask for your guidance, senior colleagues – what performance parameters should I take into consideration when choosing this type of polyurethane? Which manufacturers can be contacted? Some expert out there, could you give me some advice? Thank you very much:loveliness: :loveliness: This post was last edited by hwt522015251 on 2009-4-6 at 16:49.]
Is there no expert on polyurethane? Please help. . . :(
Go and look for relevant books... go to the library
Everyone is at work; where would a library come from? . . Besides, there are things that can’t be understood just by reading books. . . :(
Then there’s nothing I can do; my professional knowledge is very limited
It’s not for a graduation thesis; it’s about the polyurethane currently used by the company, and we want to replace it with a better one. My graduation thesis is on nylon; I’m currently working at a company while working on the thesis. I’m in my senior year now.
If the boss thinks you must stay at the company and can’t go to the library, then you’re not the person to solve this problem; don’t bother yourself. To put it more bluntly, please forgive me.
:(The problem still hasn’t been solved. . .
It’s not very useful to have others suggest uses; it’s best to try it out by yourself.
It’s not very practical to conduct experiments on our own in the company; such polyurethane expansion molds are merely tools, and they are not produced by us. :(One can only contact the manufacturer to see if they can provide the desired product.)
“High resilience is required for polyurethane rubber. At present, a polyurethane bulging die becomes deformed after just over 100 extrusions, and the resulting products do not meet the required standards. I am now looking for a polyurethane expansion die with high resilience and minimal permanent deformation. Extend the service life. ” The indicators you’ve proposed aren’t very clear; it would be better to provide specific ones. What are the components of the current polyurethane rubber?
It’s quite realistic; it might also be related to the fact that you’ve just started working. In reality, many companies do not have the necessary testing conditions or resources. The testing methods were developed through trial and error, and it is not necessary to use experimental instruments to implement them.
We had to use the simplest solution: we tried using samples from other manufacturers on our machines. . . :(