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Adhesion testers

Tensile adhesion tester

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another. In the field of quality testing, adhesion of coatings to the base material, such as paints, plastic, epoxy mixtures, sprayed metal, laminate to wood and other metal and polymer coatings, is the most often measured.
Tensile adhesion tester AC-1 is a pull-off type adhesion tester for determining the adhesion strength in MPa and can be used in compliance with EN13144, ISO4624 and ISO16276-1.

Operation:

To determine coating adhesion, using the tensile adhesion tester, requires:
1. Glue the dolly to the coating with glue (epoxy, cyacrine or other, depending on the coating).
2. Using a special cutter, cut through the coating to limit the tested area from the main layer.
3. After the glue is frozen, attach the adhesion tester to the dolly tightly, and turn the main screw of the device until the dolly with the coating comes off the base.
4. Record the MPa value on the scale of the device in accordance with the dollies used.

Advantages:

• Simple design and easy to operate.
• Result in mPa values.
• Universal in use.

Optional accessories:

• Dollies
• Holesaw (cutter) for cutting area of testing

Standard supply:

• Adhesion tester
• Dollies: n° 1, n° 2 – 3 pcs
• Holesaw (cutter) for cutting area of testing
• Wrench
• Case
• Operating manual

Peel adhesion tester

Adhesion tester AP-1M is designed to measure the adhesive strength value of the coatings on different structures, as well as to determine the adhesion value of polymeric insulating tapes which are generally used for pipes insulation. Adhesion tester AP-1M is reliable and easy in operation.

Features:

Adhesion tester AP-1M consists of a body with removable clamp for holding the peelable strip of tested material with built-in dynamo-meter were breakout force is displayed. The design of the instrument allows user to set (control) the angle of peeling.
The dynamo-meter’s scale is applied to pull the rod, so that its usability significantly improves, compared to existing analogues: user’s hand never overrides the scale of the instrument. Adhesion tester has reliable construction of stainless steel, that guarantees its long life. The design of the instrument allows user to operate at low temperatures or conditions of high humidity and dust.

Standard supply:

• Adhesion tester
• Knife
• Template for incision
• Operating manual

Optional accessories:

• Knife
• Template for incision

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Bitumen and mastic insulation adhesion tester

Adhesion tester SM-1M is a device for measuring the adhesion value of bitumen pipe insulation and other insulating coatings which are based on bitumen. Adhesion tester SM-1M is a mechanical device which allows to determine the adhesion value of quality and quantity, by measuring the strength of sticking the bitumen insulation to the surface of the pipeline.

Adhesion tester of bitumen insulation allows user to take measurements during testing; planned inspections of steel structures and pipelines after their installation, and also after performing the repairs in order to identify defects during the application of the insulation, as well as for the subsequent monitoring of the quality of performed works. The device has been successfully used in the field and in the laboratory (workshop) conditions.

Features:

Structurally device complies with the standards and consists of a system of rods, which are connected by a calibrated spring. The device has to be installed on pre-prepared section of the pipeline (or metal construction) with a cut-out portion of the polymer coating and, after turning the handle, the force is applied by the calibrated spring. During applying of the load, the device measures displacement of the rod. The value on the scale, which is installed on the device, is converted into the shearing force and determines the adhesion value of the bituminous coating.

Operation:

The adhesion value of the insulating coatings is characterized by shearing force for a part of isolation of 1 cm2. The test with adhesion tester SM-1M is performed in the following way: on an area of 10×10 mm of the covering insulation performe an incision throughout its entire thickness. After the device is installed on the cover and abuts the blade to the end face of the formed area of 10×10 mm. By turning the handle, the spring is compressed and applies the predetermined force to the knife, which transmits the shear deformation to the platform of cover. The strength of adhesion of the coating resists against the applied force. User should apply the force till occur the discontinuity (disruption) of coating area. The maximum value of testing is displayed on the scale of the device and fixed as the value of adhesion of the coating. The measurements have to be done at three different points, which are located at least 50 cm from each other. The value of adhesion is the arithmetic average of three measurements.

Standard supply:

• Adhesion tester
• Package
• Operating manual

Optional accessories:

• Knives
• Blades

Scratch adhesion tester

This device is used for determining the adhesion and resistance to damage by scratching in compliance with ISO 12137-1, ASTM D 5178, ASTM D 2197.
This device is designed for analysing the resistance of the coating to scratching. The cutting unit with interchangeable indenters presses on the surface with load and moves to the predetermined distance.

Depending on the purpose of the testing and the applied load, the degree of penetration of the cutting unit into coating could be different, from the trace on surface to a total destruction of the coating. Device determines the resistance of the coating to scratching.
Modern requirements to the quality of coatings include control of the mechanical resistance of coatings to damage. The one important criterion of its assessment is the hardness of the coatings. For different requirements there are various methods of the hardness (strength) testing of coatings.

Standard supply:

• Instrument
• Set of loads (1 x 50 g, 2 x 500 g)
• Indenters: U-shaped – 1pc., Circular – 1pc.
• Hex key – 2pcs.
• Package

Optional accessories:

• Indenters
• Set of loads (50 g, 500 g)

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Cross cut adhesion tester

Cross cut adhesion tester is designed in compliance with ISO 16276-2, ISO 2409, DIN 53151, ASTM B 335, ASTM D 3002, BS 3900-E6, BS EN ISO 2409, NF T 30-038.
Cross cut adhesion tester AN-1 is designed for cuts (parallel or lattice) adhesion testing method, and for thickness range of paint coatings up to 200 µs, compliant with ISO 2409, ISO 16276-2, ASTM B 3359. Device can be used on both flat and curved surfaces.

The method of parallel or lattice cuts consists of assessing the adhesion value while cutting through the coating down to the substrate by a multi-blade knife with the distance between the blades 1 mm, 2 mm or 3 mm which produces a strip or grating with the same pitch. Than the place of cutting has to be cleaned and the value of adhesion visually analysed by the nature and the area of destruction of the coating.
Structurally the cross cut adhesion tester AN-1 consists of a plastic handle and a metal head for fastening multiblade knife, which is made of tool steel. Each knife has six main and two restrictive blades. It is possible to sharpen blunted blades.

Standard supply:

• Cross cut adhesion tester
• Three interchangeable multiblade cutters (1 mm, 2 mm and 3 mm)
• Hex key
• Package
• Operating manual

Optional accessories:

• Interchangeable multiblade cutters (1 mm, 2 mm and 3 mm)
• Hex key

Cross hatch adhesion plate

The instrument is designed to measure the adhesion value of coatings in compliance with ISO 16276-2 and ASTM D 3359.
Adhesion tester consists of a flat steel plate with normalized slits, which is used as a template to perform incisions with the knife.

Application:

The adhesion plate is placed on the test surface, the coating is cut with the knife up to the substrate, after which the plate is rotated and performed the second cut 30 degrees to the first in the form of an X (X-cut). Incisions are cleaned with a brush or with adhesive tape, and after that, the adhesion value is visually evaluated according to the point system.

Standard supply:

• Adhesion plate
• Knife
• Operating manual

Optional accessories:

• Knife