C1420, C1520, C1330, C1524, C2850
The engineering selection method for creating the resin model is not only fast and slow, but also more sticky, responsive, hard, flexible, compatible and targeted construction processes.
Let's get the conditions straight.
Resin should be pushed back from the end-use: topcoat focuses on durability, leveering and appearance, with a focus on filling, construction thickness and layering, waterproofing systems focus on softness, crack follow-up and water resistance, and industry should consider media, membrane thickness and coating. It is difficult to stabilize coverage of all scenes without applying the “general model” of the boundary.
The construction methods, the thickness of single-lane wet membranes, ambient temperatures, acceptable pot life and open traffic hours are also identified. The same resin may differ significantly in the heating, bubble release and surface state of the sprayed film and the coated film.
Compare parameters rather than model only
The models C1420, C1520, C1330, C1524, C2850 should be based on the supplier ' s current TDS, sample and batch inspection data. The focus is on solidity, viscosity, colour, metamine equivalent, official energy orientation, recommended hardener and scope of application, avoiding extrapolation of chemical structure or final performance based on model numbers.
The selection table proposes to add a column entitled “Target formulations”, which records resin's mixed viscosity, pot life, bubble elimination, lovening, hard growth and appearance after pigmentation and assistive. The original resin data are excellent and do not mean that the same advantage is maintained after entering complex formulations.
Single-resin and resin-blend approaches
Where rapid delivery is required, more responsive subjects can be selected, but security time is reserved for mixing, trans-shipment and rollover; When large areas of manual construction are required, long pot life resin can be used as the main subject, then early curing by recombining. Combining values are balanced rather than simply increasing the two models by half of experience.
At least three gradients are set at each time of the mix and the NCO/NH equivalent, pigmenty and assistive uses are maintained. The change can be judged from the resin ratio instead of other variables by time- sticky curves, touch-dry, hard development and mechanical data comparison.
Distribution performance by coating layer
Primer focuses more on permeability, wetting and interface response, with coatings requiring carrying, filling and construction, with face coatings emphasizing weather resistance, decoration and pollution cleaning. A system can use different resin combinations, but must verify inter-layer compatibility and recoat window, not superseding the most powerful single layer of material mechanically.
(b) Soft substrate or high outdoor temperature differentials, which should control the overall model and retain the ability to transform; Reloading flooring combines hardness, resilience and shock resistance to avoid using high hardness instead of structural design.
The confirmation step for small to medium test
The laboratory first screens 200 — 500 class to confirm the state of mixing, reaction speed and paint membrane appearance; (b) A further kg-scale mid-test to observe heating, filtering, filling and storage stability; Finally, small area construction was completed on real base materials, recording tools, usage, humidity and actual opening hours.
Key parameters should be reconfirmed for any feedstock replacement. In particular, the original pot life and appearance conclusions cannot be followed directly when the hardener, catalytic components, solvents and high-sortment pigmentation changes.