The adhesion test method of coatings

Abstract By using a rubber diaphragm as pressure transmitting medium, a cured adhesion test method has been developed which permits controllable curing pressures to be employed. The quest for a new adhesion test method was occasioned by lack of confidence in existing test methods with respect to reproducibility and correlation between testing sites. The diaphragm cures “hi place” with a minimum of rubber movement as compared to excessive press pressures which induce flow. Controllable vulcanizing pressures and temperatures permit accurate adhesion evaluation of individual components in the laboratory under conditions which closely approximate manufacturing methods. A prime goal has been evaluation of true chemical bonding and elimination of all possible mechanical adhesion contributions inherent in most rubber-product fabrications. The diaphragm pressure adhesion test can be used by Quality Control, Development, or Research Department as an accurate tool to evaluate the chemical adhesion potential of rubber and common reinforcing components. Since adhesion values are machine recorded, all laboratory time and error in tabulations and calculations are eliminated. Basic principles of the technique permit evaluation of chemical bonding of rubber to yarns, fibers, and cords with equal effectiveness.

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Hot Pin Pull Method – New Test Procedure for the Adhesion Measurement for 3D-MID

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1038.115 ◽

2014 ◽

Vol 1038 ◽

pp. 115-120 ◽

Cited By ~ 4

Author(s):

Christian Goth ◽

Thomas Kuhn ◽

Gerald Gion ◽

Jörg Franke

Keyword(s):

Test Procedure ◽

Test Methods ◽

Test Method ◽

Testing System ◽

Adhesion Test ◽

Metallic Structures ◽

Adhesion Measurement ◽

Molded Interconnect Devices ◽

Unsolved Issue

The adhesion test of metallic structures on MID (Molded Interconnect Devices) parts is an unsolved issue. So far no method really works reliably. The test methods which are conventionally used are the pull-off test and the shear-test. Both show large standard deviation and the reproducibility is not assured. Nordson DAGE has introduced the new micro-material testing system 4000Plus. This device enables a new test method for the determination of the adhesion strength of MID structures using the hot pin pull (hot bump pull) method. Copper pins (tinned or untinned) are heated up with a user defined temperature profile, soldered to a metallized structure on the MID and then removed vertically upward, while the force is recorded. In this contribution investigations with this new test method are presented.

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FORMULASI,UJI STABILITAS DAN UJI EFEKTIVITAS ANTIOKSIDAN SEDIAAN GEL DARI EKSTRAK ETANOL DAUN SESEWANUA (Clerodendron squamatum Vahl) DENGAN MENGGUNAKAN METODE DPPH

PHARMACON ◽

10.35799/pha.8.2019.29295 ◽

2019 ◽

Vol 8 (2) ◽

pp. 298

Author(s):

Kristianus Runtuwene ◽

Paulina V. Y. Yamlean ◽

Adithya Yudistira

Keyword(s):

Skin Aging ◽

Premature Aging ◽

Test Method ◽

Good Stability ◽

Antioxidant Compounds ◽

Adhesion Test ◽

Cycling Test ◽

Mature Leaves ◽

Antioxidant Effectiveness ◽

Gel Preparation

ABSTRACTChronic exposure to UV radiation on the skin can cause many side effects on the skin such as premature aging, skin cancer and decreased ability of the immune response. Irreversible skin aging begins at the age of 20 years. Mature leaves (Clerodendron squamatumVahl) have flavonoids, which are antioxidant compounds. This study aims to prove that seswanua leaf gel preparations have good stability, meet the requirements of gel preparations and have good antioxidant effectiveness. This type of research is descriptive analytics. Extraction of sesewanua leaves was carried out using maceration with 96% ethanol solvents. Evaluation of gel preparations was carried out by conducting homogeneity, organoleptic, pH, dispersion and adhesion test. Gel stability test was carried out using the cycling test method. Testing the effectiveness of antioxidants using the method (1,1-diphenyl-2-picrylhydrazyl (DPPH) with IC50 results of 123 mg / L for storage and 263 mg / L for post-storage. It can be concluded that gel preparations with 3% HPMC concentration have good stability, fulfills the requirements of gel preparations and has antioxidant effectivenessKeywords : Sesewanua Leaves, Extraction, Gel Preparation, AntioxidantsABSTRAKPaparan kronis radiasi UV terhadap kulit dapat menimbulkan banyak efek samping pada kulit seperti penuaan dini, kanker kulit dan penurunan kemampuan respon imun. Penuaan kulit yang bersifat irreversible dimulai pada usia 20 tahun. Daun Sesewanua (Clerodendron squamatum Vahl) memiliki senyawa flavonoid yang bersifat sebagai senyawa antioksidan. Penelitian ini bertujuan untuk membuktikan sediaan gel daun sesewanua mempunyai stabilitas yang baik, memenuhi persyaratan sediaan gel dan mempunyai efektivitas antioksidan yang bagus.Jenis penelitian ini ialah Deskriptif Analitik. Ekstraksi daun sesewanua dilakukan dengan menggunakan metode maserasi danpelarut etanol 96% . Evaluasi sediaan gel dilakukan dengan melakuan uji homogenitas, organoleptis, pH, daya sebar dan daya lekat. Uji stabilitas gel dilakukan dengan menggunakan metode cycling test. Pengujian efektivitas antioksidan menggunakan metode (1,1-difenil-2-pikrilhidrazil (DPPH)dengan hasil IC50 sebesar 123 mg/L untuk sebelum penyimpanan dan 263 mg/L untuk sesudah penyimpanan.. Sehingga dapat disimpulkan sediaan gel dengan konsentrasi HPMC 3% mempunyai stabilitas yang baik, memenuhi persyaratan sediaan gel dan memiliki efektivitas antioksidan Kata Kunci : Daun Sesewanua, Ekstraksi, Sediaan Gel, Antioksidan

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Development of a new aggregate-binder adhesion test method

Bituminous Mixtures and Pavements VI ◽

10.1201/b18538-56 ◽

2015 ◽

pp. 385-394 ◽

Cited By ~ 1

Author(s):

A Al-Haddad ◽

H Al-Khalid

Keyword(s):

Test Method ◽

Adhesion Test

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ISO Standardization of Dynamic Adhesion Test Method for DLC Coated Parts under lubricated Condition using Acoustic Emission

Journal of The Surface Finishing Society of Japan ◽

10.4139/sfj.71.551 ◽

2020 ◽

Vol 71 (9) ◽

pp. 551-554

Author(s):

Yutaka MABUCHI ◽

Kensuke IKEHARA

Keyword(s):

Acoustic Emission ◽

Test Method ◽

Adhesion Test

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Interlaboratory Study of Ice Adhesion Using Different Techniques

Coatings ◽

10.3390/coatings9100678 ◽

2019 ◽

Vol 9 (10) ◽

pp. 678 ◽

Cited By ~ 13

Author(s):

Sigrid Rønneberg ◽

Yizhi Zhuo ◽

Caroline Laforte ◽

Jianying He ◽

Zhiliang Zhang

Keyword(s):

Adhesion Strength ◽

Shear Test ◽

Bulk Water ◽

Test Methods ◽

Test Method ◽

Vertical Shear ◽

Adhesion Test ◽

Water Ice ◽

Key Parameter ◽

Ice Adhesion

Low ice adhesion surfaces are a promising anti-icing strategy. However, reported ice adhesion strengths cannot be directly compared between research groups. This study compares results obtained from testing the ice adhesion strength on two types of surfaces at two different laboratories, testing two different types of ice with different ice adhesion test methods at temperatures of −10 and −18 °C. One laboratory used the centrifuge adhesion test and tested precipitation ice and bulk water ice, while the other laboratory used a vertical shear test and tested only bulk water ice. The surfaces tested were bare aluminum and a commercial icephobic coating, with all samples prepared in the same manner. The results showed comparability in the general trends, surprisingly, with the greatest differences for bare aluminum surfaces at −10 °C. For bulk water ice, the vertical shear test resulted in systematically higher ice adhesion strength than the centrifugal adhesion test. The standard deviation depends on the surface type and seems to scale with the absolute value of the ice adhesion strength. The experiments capture the overall trends in which the ice adhesion strength surprisingly decreases from −10 to −18 °C for aluminum and is almost independent of temperature for a commercial icephobic coating. In addition, the study captures similar trends in the effect of ice type on ice adhesion strength as previously reported and substantiates that ice formation is a key parameter for ice adhesion mechanisms. Repeatability should be considered a key parameter in determining the ideal ice adhesion test method.

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