Hey. You can find the EEW of various resins in their TDSs or online. However, often in the TDS documents a range is presented for EEW and that would not be precise. Therefore, it is suggested to measure it again just before use. Even if you are using a resin frequently, and you have measured the EEW previously -say 2 months ago, you should measure it again before use, as the EEW changes over time, like a deactivation phenomenon.
Dear Sir, Please brief me, If the epoxy value is being achieved at the same time on a daily basis, suddenly one day on the same formulation, its epoxy value is not achieved, which is achieved after running for one and a half hours on the same standard but with 30 kg weight loss after completion of batch, pls let me know about this epoxy value that may cause of weight loss and effected on batch weight. Please describe me in detail.
Hey dear Sohaib, Your question is kind of vague to me, but let me explain the situation based on my understanding and plausible circumstances. The formulation: If you are formulating an adhesive product for example, technically you are mixing various compounds to achieve an adhesive (i.e., fillers, additives, etc.). Herein, the binder is a kind of epoxy, often 828 or 128 grades. If your binder and formulation is not changing then the EEW could have stayed in tact. The EEW is an inherent property of the epoxy (or the formulation) and be aware that unless there is a reaction occurs between oxiranes, it stays still. It means that in a formulation where reactions are not expected during mixing, EEW is a simple pointer to the oxirane rings. More, I am not sure about not achieving EEW on the same formulation. If you mean EEW of the formulation has varied, i.e., form 190 to 140 for example, it means that your Binder does not have the same quality as before, if other components and ratios of them are equal. You should check the EEW of your pristine Epoxy. If by achieving you mean measuring, as I explained, EEW is "not a function of weight of your formulation". So, as far as you are doing the measurement procedures right, you should end up with the same value. There are various standards exists for that. Did I answer your question?
Very much informative for epoxy beginners. U r doing nice work. Just an opinion, start working for epoxy formulated products, u should look for start with small organization.
Hi Sir, I want to ask, it is okay if I just find EEW of epoxy on google?
Hey. You can find the EEW of various resins in their TDSs or online. However, often in the TDS documents a range is presented for EEW and that would not be precise. Therefore, it is suggested to measure it again just before use. Even if you are using a resin frequently, and you have measured the EEW previously -say 2 months ago, you should measure it again before use, as the EEW changes over time, like a deactivation phenomenon.
Dear Sir,
Please brief me, If the epoxy value is being achieved at the same time on a daily basis, suddenly one day on the same formulation, its epoxy value is not achieved, which is achieved after running for one and a half hours on the same standard but with 30 kg weight loss after completion of batch, pls let me know about this epoxy value that may cause of weight loss and effected on batch weight. Please describe me in detail.
Hey dear Sohaib,
Your question is kind of vague to me, but let me explain the situation based on my understanding and plausible circumstances. The formulation: If you are formulating an adhesive product for example, technically you are mixing various compounds to achieve an adhesive (i.e., fillers, additives, etc.). Herein, the binder is a kind of epoxy, often 828 or 128 grades. If your binder and formulation is not changing then the EEW could have stayed in tact. The EEW is an inherent property of the epoxy (or the formulation) and be aware that unless there is a reaction occurs between oxiranes, it stays still. It means that in a formulation where reactions are not expected during mixing, EEW is a simple pointer to the oxirane rings. More, I am not sure about not achieving EEW on the same formulation. If you mean EEW of the formulation has varied, i.e., form 190 to 140 for example, it means that your Binder does not have the same quality as before, if other components and ratios of them are equal. You should check the EEW of your pristine Epoxy. If by achieving you mean measuring, as I explained, EEW is "not a function of weight of your formulation". So, as far as you are doing the measurement procedures right, you should end up with the same value. There are various standards exists for that.
Did I answer your question?
Very much informative for epoxy beginners. U r doing nice work. Just an opinion, start working for epoxy formulated products, u should look for start with small organization.
Thanks for the tip.