Introduction:
      DH-511 elastic anti-collision material is a polyurea elastomer material composed of isocyanate semi-prepolymer, amine chain extender, polyether, pigment and additives. It is a new type of "green and environmentally friendly" spraying technology that adopts new equipment and new process to spray on the spot. It is one of the most advanced spraying technologies in the world at present.

Purpose:
      DH-511 elastic anti-collision material is specially designed for Marine chord protection, dock chord protection, duckbill, buoy, bumper ship, etc. The floating body material made of DH-511 material system will not sink even if it is damaged, which can be called unsinkable floating material.

Performance indicators:

Solid content	100%
Gel time	10 seconds to 8 minutes
Tensile strength	≥15MPa
Tear strength	≥60KN/m
Elongation at break	≥300%
Hardness,Shore A	75 ~ 95
Adhesion	substrate failure
Water resistance	no corrosion, no blister, no shedding
Resistant to salt fog	no corrosion, no blister, no shedding
Low temperature flexibility (- 30 ℃)	without fracture
Recommended thickness	2-10mm

Substrate processing:
      Remove the burr of the substrate, remove the oil and impurities on the substrate, avoid water on the substrate.

The coating method:
      High temperature and high pressure spraying equipment specially used for polyurea are used for substrate.

Supporting materials:
      During multi-pass spraying, if the interval between each passes is so long that it can  exceed 3 hours, the surface need to be polished, and then DH-DQ001 layer adhesives are applied.
      If the polyurea material is damaged, manual repair material DH-X200 can be used.