company news about 15 Questions About Polypolyaspartic Polyurea

Q1 What is the requirement of sealant for polypolyaspartic polyurea coating?

① The matching of sealant is similar for both polypolyaspartic polyurea coating and water-based paint currently used.

② The matching of sealant may be different due to the different situation of polypolyaspartic polyurea coating used by each company, so we need to conduct a test matching.

Q2 Which type of primer is generally chosen for polypolyaspartic polyurea coating?

① It is recommended to match the primer and topcoat with the same manufacturer for the best results.

② Generally, we have to design the coating system and decide the type of primer and topcoat separately.

Q3 What are the main ingredients of putty?

The main ingredients of putty are: resin, filler, additives, etc. It is usually solvent-free or contains very little solvent.

Q4 Can polypolyaspartic polyurea coating be applied on the surface of polyurethane and fluorocarbon topcoat after surface brushing? If yes, will there be any risk of delamination or poor matching?

① If the polyurethane surface is brushed and recoated with polypolyaspartic polyurea, the compatibility is generally fine.

② Fluorocarbon topcoat from different manufacturers may be different, you need to do specific matching test to verify.

Q5 What is the adjustable range of curing time for polyaspartic polyurea coatings?

For polyaspartic polyurea system, the curing time can vary greatly different by choosing different polypolyaspartic ester resins and different isocyanate curing agents, so it can be adjusted according to customer needs as follows:

1. The fastest is choosing F220 with HDI trimers, which can achieve 5 minutes finger-pressure drying.
2. Choosing F420 with HDI trimer, which can achieve 1 hour finger-pressing dry.
3. Selecting F520 with HDI trimer can achieve 8 hours of finger-pressing drying.
4. Selecting F420 with special prepolymer curing agent can also achieve 8 hours of finger-pressure drying.

Q6 What are the requirements of polypolyaspartic polyurea coating for the wall plate of production line when new coating line is built?

1. The requirements of production line wall plate are not different from general oil-based coating line.
2. Cleanliness is also similar to oil-based and water-based coating lines.

Q7 Can polypolyaspartic polyurea coating make low to medium gloss?

Polypolyaspartic polyurea coatings can be made with low to medium gloss, but it is more difficult to achieve high solvent-free solid content.

However, if the requirements of solid content and VOCs are not high, it is possible to make low to medium gloss by adding matte powder and reducing solid content. Generally speaking, the higher the solid content of the coating, the larger the amount of matte powder needs to be, and the more difficult it is to lower the gloss.

Q8 Can this coating system achieve very good anti-impact shock-absorbing cushioning performance?

Polypolyaspartic polyurea has very good abrasion and impact resistance.

Q9 Is it easy to clog the spinner cup?

Based on the electrostatic spinner cups that have been tested so far, no clogging has been observed when spraying Polypolyaspartic polyurea coatings.

As long as the downtime is less than the POT LIFE of the coating, the cups will not be clogged.

Q10 Can I use polypolyaspartic polyurea coatings for workpieces with high corrosion resistance requirements?

Yes, many heavy-duty anti-corrosion coating systems are using polypolyaspartic polyurea coatings.

At present, in the case of high anti-corrosion requirements:

1. There is no problem at all for polypolyaspartic polyurea to be used as topcoat in the matching system.
2. For primer, it is generally not more than C4 level or above corrosive environment. Epoxy zinc-rich, inorganic zinc-rich or epoxy anti-corrosion primer is recommended for C4 and above corrosive environment.

Q11 Compared with pure epoxy, which one has more price advantage?

① The price of polypolyaspartic ester resin is higher than epoxy resin, and the price of coating should be discussed in specific formulations.

② The current price of polyaspartate resin is lower than before, and the price of HDI trimer has also dropped to a low level this year, so the price of polypolyaspartic polyurea coating is significantly lower than the previous two years.

Q12 Is the wind speed requirement of spraying room higher?

Since the construction VOC content of polypolyaspartic polyurea coating is lower than conventional oil-based coating, so the emission is less, and the wind speed is not required to be higher.

Q13 Can we do thermally conductive and impact resistant polyurea coating?

① Impact resistance is the characteristic and advantage of polypolyaspartic polyurea resin.

② The function of thermal conductivity needs to be realized by adding special functional filler of thermal conductivity.

Q14 Is there any special requirement for paint mist coagulant?

Since polypolyaspartic polyurea dries and forms film faster compared to ordinary paints, it should be easier to achieve in terms of paint mist coagulant than ordinary paints in theory.

Q15 How to solve the problem of light retention for medium and low gloss polypolyaspartic polyurea coatings?

① The light retention rate of low light coatings with polypolyaspartic polyurea gloss below 30° is quite good, and high light is also easy to achieve high light retention rate.

② It is difficult to keep the light of low and medium gloss, currently we are testing a new type of aging agent to see if it can be improved. In the future, we plan to develop matte polypolyaspartic polyurea resin to achieve this.