Adhesive testing and equipment, adhesive adhesion test method

Adhesive testing is divided into physical testing and chemical performance testing, physical testing includes adhesion and shear force, peeling force after coating substrate, adhesion, initial adhesion, etc., and chemical testing includes the performance of temperature and temperature change. European standard instrument is engaged in the development and production of stripping machine, adhesive tape testing instruments such as adhesive holding force, peeling force can be set freely peeling interval and other functions, fully in line with the standard test requirements. Adhesive tape testing machine.

The testing classification of adhesives includes adhesive raw material testing, organic adhesive testing, multi-type adhesive testing, synthetic rubber adhesive testing, tape testing, construction adhesive testing, etc.

The test items of adhesives are:

Physical properties Viscosity, softening point, appearance, density, viscosity, bonding point, softening point, curing time, pH value, application period and storage period detection.

Mechanical properties tensile strength, shear strength, peel strength, gluing strength, splitting strength, impact strength.

Electrical properties Dielectric strength, dielectric constant, volume resistance, monomer content.

Applicability: Corrosiveness, fluidity, low temperature stability, permeability, etc.

Reliable performance Creep, fatigue strength, impact resistance, durability, aging performance, chemical resistance, salt spray test, etc.

Toxic and harmful substances VOC, benzene, toluene, xylene, free formaldehyde, methanol, chlorinated hydrocarbons, heavy metals, non-volatile substance content.

Chemical Analysis Formulation Analysis, Ingredient Identification, Content.

There is a special national standard for adhesive adhesion testing, I don't know what form of adhesion you want to measure, the commonly used ones are tensile strength, shear strength and peel strength, etc. You can refer to the corresponding national standard: GB T6329-1996 determination of tensile strength of adhesive butt joint; GB T6328—1999 Test Method for Shear Impact Strength of Adhesive; GB T2790-1995 Adhesive 180 degree peel strength test method: flexible material to rigid material; GB T2791—1995 Adhesive T peel strength test method: flexible materials against flexible materials.

Commonly used adhesive adhesion test methods are:

GB T7124-2008 Adhesive Determination of tensile shear strength (rigid material to rigid material).

GB T 2790-1995 Test method for 180° peel strength of adhesives Flexible materials to rigid materials

GB T2791—1995 Adhesive T peel strength test method: flexible materials against flexible materials.

GB T 2792-2014 Test method for peel strength of adhesive tape

GB T6329-1996 Determination of tensile strength of adhesive butt joints

GB T6328—1999 Test Method for Shear Impact Strength of Adhesive;

GBT 17517-1998 Test Method for Compressive Shear Strength of Adhesives – Wood and Lumber

GJB94—1986 Test Method for Uneven Tearing Strength of Adhesive (Metal and Metal).

Weight cup method.

The weight cup method is a method of determining the density of liquid adhesives and their components with a weight cup in ml. It is suitable for the determination of the density of liquid adhesives, especially for liquid adhesives with high viscosity or high volatility of components, and it is not suitable to determine the density by the density bottle method.

Check the tension of the tape, if the tape is particularly easy to break, it is inferior quality. A good tape is not easy to break, using a better transparent field with a bright film.

There are also many ways to check the viscosity of the tape, you can seal the box with the tape, and then suddenly withdraw it, the more you can peel off the surface of the box, the more you shoot, the better the stickiness. You can also pull a relatively long section of tape, divided into two, in the middle of the dust finger folded to fit fully, and then suddenly pulled up, if the tape is not pulled up or part of the tape is broken during the process of pulling up, it means that the stickiness is strong.

Impurity content Hazardous substances: benzene, toluene, xylene, free formaldehyde, methanol, chlorinated hydrocarbons, heavy metals, starch substances, ash substances, non-volatile substances.

Analysis items: formula analysis, ingredient identification, content analysis, ingredient comparison.

3 1 Rotational viscometer.

3 2 Thermostatic bath: can maintain 23 0 5 (other temperatures can also be selected according to adhesive requirements).

3 3 Thermometer: 0 1 division.

3 4 Container: a container with a diameter of not less than 6 cm and a height of not less than 11 cm or a container attached to a rotational viscometer.

3 5 viscosity cup: the capacity of No. 1-4 viscosity cup is greater than 50ml.

The small hole d are:

d(1)=1．778±0．003

d(2)=2．54±0．003

d(3)=3．81±0．003

d(4)=6．35±0．003

No. 1-4 viscosity cups.

3 6 stopwatch: accuracy is 0 2s.

3 7 Graduated cylinder: 50ml.

3 8 Constant temperature room: can maintain 23 0 5

4 1 The specimen should be uniform and free of bubbles.

4 2 The sample amount should be able to meet the needs of the rotary viscometer and viscosity cup.

Tape tack tester alias: tape tack tester, tack tester, tack tester, tack performance tester, tape tack performance tester.

The tape initial adhesion tester is suitable for the initial tack modification test of related products in the production industries of pressure-sensitive tapes, medical patches, self-adhesive labels, protective films, etc. Nuclear base return posture.