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The effect of catalyst and accelerator on mechanical properties Of Unsaturated Polyester Resin (UPR)

تأثير المادة البادئة و المادة المسرعة على الخواص الميكانيكية للبولي استر غير المشبع

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 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




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This search aims to study the effect of additive materials ( Ethyl Methyl Keton Peroxide MEKP , Cobalt Naphthenate ) at the important values of (stress-strain) curves ( stress and elongation at break ) for the preparing specimens from reinforced and nonreinforced with fiber glass unsaturated polyester resin. The result showed that the investigated parameters are clearly affected with using additive materials and the optimum concentration for non-reinforced specimens which was curing in room temperature was (1% MEKP + 1% Cobalt Naphthenate) and (0.8% MEKP + 1% Cobalt Naphthenate), and for reinforced specimens with fiber glass was:( 1% MEKP + 0.8% Cobalt Naphthenate) and ((0.2-0.4) % MEKP + 1% Cobalt Naphthenate). The results showed also that it is possible to get the better values of tensile stress at break when the specimens was curing in oven at 100 Cº and treated at this temperature for 15 min.


Artificial intelligence review:
Research summary
تهدف هذه الدراسة إلى تحليل تأثير المواد المضافة مثل بيروكسيد الميثيل إيثيل كيتون (MEKP) وكوبالت نفتتات على الخواص الميكانيكية للبولي استر غير المشبع (UPR)، سواء كان مسلحًا بطبقة من الألياف الزجاجية العشوائية أو غير مسلح. أظهرت النتائج أن هذه المواد تؤثر بشكل كبير على إجهاد الشد والاستطالة النسبية عند التحطم. تم تحديد النسب المثلى للمواد المضافة لتحقيق أفضل خواص ميكانيكية للعينات غير المسلحة والمسلحة. كما أظهرت الدراسة أن تحضير العينات على الساخن عند درجة حرارة 100 درجة مئوية يعزز من قيم إجهاد الشد عند التحطم بشكل ملحوظ مقارنة بالعينات المحضرة على البارد. توصلت الدراسة إلى أن النسب المثلى للمواد المضافة تتراوح بين 1% MEKP و1% كوبالت نفتتات للعينات غير المسلحة، و0.8% MEKP و1% كوبالت نفتتات للعينات المسلحة. كما أكدت النتائج أن المعالجة الحرارية عند درجة حرارة 100 درجة مئوية لمدة 15 دقيقة تؤدي إلى تحسين الخواص الميكانيكية للعينات بشكل كبير.
Critical review
دراسة نقدية: على الرغم من أن البحث قدم نتائج مفيدة حول تأثير المواد المضافة على الخواص الميكانيكية للبولي استر غير المشبع، إلا أنه كان من الممكن تحسينه من خلال تضمين المزيد من التفاصيل حول التطبيقات العملية لهذه النتائج في الصناعات المختلفة. كما أن الدراسة اعتمدت بشكل كبير على الاختبارات المخبرية، وكان من الأفضل إجراء تجارب ميدانية للتحقق من النتائج في ظروف تشغيل حقيقية. بالإضافة إلى ذلك، كان من الممكن توسيع نطاق الدراسة لتشمل مواد مضافة أخرى قد تكون لها تأثيرات مختلفة على الخواص الميكانيكية للبولي استر غير المشبع.
Questions related to the research
  1. ما هي المواد المضافة التي تم دراستها في البحث؟

    تم دراسة تأثير بيروكسيد الميثيل إيثيل كيتون (MEKP) وكوبالت نفتتات على الخواص الميكانيكية للبولي استر غير المشبع.

  2. ما هي النسب المثلى للمواد المضافة للعينات غير المسلحة؟

    النسب المثلى للعينات غير المسلحة هي 1% MEKP و1% كوبالت نفتتات.

  3. ما هو تأثير المعالجة الحرارية عند درجة حرارة 100 درجة مئوية على العينات؟

    المعالجة الحرارية عند درجة حرارة 100 درجة مئوية لمدة 15 دقيقة تؤدي إلى تحسين قيم إجهاد الشد عند التحطم بشكل ملحوظ.

  4. هل تم إجراء تجارب ميدانية للتحقق من النتائج؟

    لا، الدراسة اعتمدت بشكل كبير على الاختبارات المخبرية ولم تشمل تجارب ميدانية للتحقق من النتائج في ظروف تشغيل حقيقية.


References used
SMITH, C. -Design of marine structures in composite materials, Elsevier Applied Science, London, 2005, 110-130
Li, L.; Sun, X.; Lee, L. -Thermoset Polymers, Dow Chemical, Technical Information, 1999, 39(4):646–6
CZVIKOVSZKY, T. -The chemistry and technology of the wood reinforced polymer composites, Műanyagipari Kutató Intézet, Budapest, 1987, 45-50
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