石墨烯专用稀释剂 Special diluent for graphene拉拔检测
1. About 石墨烯专用稀释剂 Special diluent for graphenethe adhesion force
DreamThinner 17 Gns:石墨烯专用稀释剂是配合石墨烯基础树脂混合使用,可以降低固化体系粘度,增加流动性,延长使用寿命,便于大面积施工;改善了操作性的同时,又不影响固化物的基本性能。 Graphene special diluent is mixed with graphene based resin to reduce the viscosity of the curing system, increase flowability, extend service life, and facilitate large-scale construction; Improved operability without affecting the basic properties of the cured product.
DreamThinner 17 GnsAdhesion is the firmness of the paint layer and the surface of the painted object through the action of physical or chemical forces.DreamThinner 17 GnsCoating adhesion is the most important indicator for evaluating a coating or coating system. Is the premise of paint film with a series of properties.DreamThinner 17 GnsThe methods of adhesion test include: drawing circle method, drawing method, drawing method, twist method and ASTM, etc
2. The role of the adhesion force
1) Good adhesion can effectively block theDreamThinner 17 Gnspenetration of the external electrolyte solution into the matrix, and delay the formation of interfacial corrosion;
2) Strong interface adhesion can greatly prevent the diffusion of corrosion products-metal cations to the cathode area through the side of the phase;
3. Pull method (pull method)
Basis: color paint and varnish, pull open method adhesion test GB / T5210-2006, this method is more professional, need professional instrument: pull instrument
3.1. Pull steps
A. Instruments and equipment: the prepared sample (according to the design requirements, film thickness)
B. Testing instrument: sandpaper, transparent tape, cutting tool, aluminum alloy cylinder mold, adhesive, drawing instrument.
c. method of operation:
1) Aluminum alloy column with 240-400 mesh fine sandpaper sand, before use with solvent scrub to remove oil;
2) Solremoval shall be used at the test site;
3) Apply the adhesive to the aluminum alloy cylinder, press it on the surface of the test coating, and turn to 360 to ensure that all parts are attached with the adhesive;
4) The aluminum alloy cylinder is fixed on the coating surface with tape, and the adhesive should solidify for 3 hours at room temperature (subject to the weather temperature and environmental humidity on the day of the experiment);
5) Before the test, use the aluminum alloy cylinder to cut the coating material;
6) Cover the aluminum alloy cylinder with the tension instrument, turn the handle for testing, record the damage strength (MPa), and the damage state. Show the adhesion strength and state of the coating and the adhesion between the substrate, the coating, the coating and the glue, and the glue and the cylinder;
3.2. Description method of drawing the coating fault state:
A: Incohesive destruction of substrate
A: Incohesive destruction of substrate
B: Coin failure of the first paint
B / C: the interlayer adhesion damage of the first and second paint
C: cohesin failure of the second paint
C / D: the interlayer adhesion damage of the second and third paint
D: cohesin failure of the third paint
D / Y: interlayer adhesion between the last coating and glue
Y: the cohesive destruction of the glue
Y / Z: interlayer adhesion between glue and test rod
Z: Inin destruction of test rod
The strength of adhesion is expressed as N/mm2 (Mpa), which is shown on the common Elcometer 108.
The following figure is an example:
For example,DreamThinner 17 Gnsif the tensile stress of a coating system is 13.17MPa, the first coating has 45% of the coating cohesion damage, and the last layer adhesion between the coating and the glue reaches 50% of the cylinder area, it can be described as: 13.17MPa, 45%D 55%D / Y.
4. Welcome to orderDreamThinner 17 Gns
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"Graphene special diluent is specially used in the construction process of graphene paint. It can adjust the construction viscosity of the paint, facilitate construction, adjust the drying rate of the paint, have good wettability to the substrate, and clean the spray equipment of spray guns and spray cans etc. By adding an appropriate amount of diluent, the viscosity of the graphene paint can be adjusted to the corresponding range, making construction easier."
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