THỬ NGHIỆM GIA TỐC ĐÁNH GIÁ ĐỘ BỀN MỘT SỐ SẢN PHẨM KEO HÀNG KHÔNG CHẾ TẠO TRONG NƯỚC
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ACCELERATED TEST FOR DETERMINATION OF BONDING STRENGTH OF SOME ADHESIVES MANUFACTURED IN VIETNAM
This article presents result of accelerated test according to Annex D.3 Cycle D2 - Heat, cold (thermal shock) and humidity cycle of standard ISO 9142: 2003 for determination of bonding strength of 5 adhesives manufactured in Vietnam. They are: K-153.VN, KT-18.VN, E6-1C.VN, K300-61.VN, 88CA.VN. Herewith, the first four adhesives are based on modified epoxy while 88CA.VN is a neoprent rubber solvent based adhesive. These adhesives are intended to be used in aviation field. The accelerated test was lasting in 15 cycles, each cycle is equal to 24 hours. The T-peel strength and shear strength of the four epoxy based adhesives has been assessed in relation to standards ASTM D1876-08 and ГОСТ 14759-69 respectively. While the 180o and 90o Peel Strip Strength of adhesive 88CA.VN has been evaluated according to standard ГОСТ 411-77. The assessment of bonding strength has been conducted after 3, 5, 7, 10, and 15 test cycles. It is shown that, the bonding strength of all adhesives has been reduced during the test process. Moreover, the decrease rate of T-peel strength was higher than that of shear strength. After 15 cycles of accelerated test, the shear strength of K153.VN adhesive, as well as the 180° Peel Strip Strength of 88CA.VN one were still higher than the required strength level for these adhesives. In addition, E6-1C.VN adhesive remained durable after seven cycles.
Từ khóa
Accelerated test, adhesives, shear strength, T-peel strength, 180° Peel Strip Strength, 90° Peel Strip Strength
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Tài liệu tham khảo
2. Broughton W.R., Mera R.D., Review of Durability Test Methods and Standards for Assessing Long Term Performance of Adhesive Joints, NPL Report CMMT (A) 61, 1997.
3. Vaughan L.F., Adams R.D., Test Methods for Determining Shear Property Data for Adhesives Suitable for Design. Part 3: The Thick Adherend Test, MTS Adhesive Programme, Project 1: Basic Mechanical Properties for Design, Report No.8, 1996.
4. Ефимов В.А., Петрова А.П., Аниховская Л.И., Ускоренные испытания клеевых соединений./ Клеи. Герметики. Технологии, №7, 2005.
5. ASTM D1183 - 03, Standard Practices for Resistance of Adhesives to Cyclic Laboratory Aging Conditions, 2011.
6. ASTM D 3434-00, Standard Test Method for Multiple-Cycle Accelerated Aging Test (Automatic Boil Test) for Exterior Wet Use Wood Adhesives, 2013.
7. ASTM D 3632-98, Standard Test Method for Accelerated Aging of Adhesive Joints by the Oxygen-Pressure Method, 2011.
8. ISO 14615:1997, Adhesives - Durability of structural adhesive joints -Exposure to humidity and temperature under load.
9. BS EN 2243-5:2005, Structural adhesives. Test method. Ageing tests.
10. ISO 9142:2003, Adhesives - Guide to the selection of standard laboratory ageing conditions for testing bonded joints.
11. ГОСТ 14759-69, Клеи. Метод определения прочности при сдвиге.
12. ГОСТ 411-77, Резина и клей. Методы определения прочности связи с металлом при отслаивании.
13. ASTM D1876-08, Standard Test Method for Peel Resistance of Adhesives (T-Peel Test).
14. ТУ 6-05-1584-86, Смола эпоксидная модифицированная марки К-153А.
15. OCT 84-167-90, Отраслевой стандарт. Компаунд на основе эпоксидных смол.
16. ТУ 38.105.1760-89, Клей резиновый 88СА. Технические условия