Page 52 - 《橡塑技术与装备》英文版2026年1月

HINA R&P TECHNOLOGY AND EQUIPMENT

elastomer. When the mass fraction of castor oil was while the R component consists of PAE mixed with
30%, the water absorption rate of the spray polyurea an appropriate amount of powder and additives.
elastomer after 7 days was 0.8%, the contact angle The paint film contains no discoloring groups and
was 105°, and the tensile strength retention after exhibits high strength, good elasticity, excellent wear
30 days was greater than 90%. The mechanical resistance, and resistance to yellowing. In practical
properties of the spray polyurea elastomer decreased applications, it maintains high color retention and
with the increase of castor oil content. When the offers significant waterproofing effects.
mass fraction of castor oil was 50%, the tensile The 2022 Beijing Winter Olympics spurred
strength of the material decreased to 15 MPa, and the development of artificial simulation ice.
the tear strength decreased to 100 N/mm. Simulated ice rinks are typically constructed by
splicing together simulation ice boards made of
2 Application of polyurea in various ultra-high molecular weight polyethylene, which
fields offers low cost, fast construction speed, and simple
Currently, the polyurea market is primarily maintenance. However, the joints can affect the overall
concentrated in countries such as the United States flatness of the ice surface, and it is impossible to
and Japan, with a growing demand in China in recent pre-bury markings and lines. Especially after skates
years. Domestic polyurea materials are primarily glide across the ice, numerous burrs or plastic fibers
used in marine corrosion protection, railway emerge, hindering athletes from performing difficult
construction, and the construction of important and skillful maneuvers. Additionally, polyethylene
facilities. In 2022, the global polyurea coatings boards are prone to deformation or even ignition when
market reached a value of 6.294 billion yuan, with heated, posing safety hazards and fire risks. Polyurea
China accounting for 1.823 billion yuan. liquid simulation ice, being both "crisp" and wear-
2.1 Application of polyurea in the resistant, with a simple manufacturing process and
construction field excellent performance, has strong wear resistance and
Polyurea is most widely used in the construction weather resistance, making it the focus of artificial ice
field, such as waterproofing walls, sealing and research.
preventing infiltration and leakage of underground Patent CN106634496B has synthesized an
water conveyance systems, etc. Its wet slip resistance artificial simulated ice using aspartic polyurea,
also makes it suitable for large sports venues with nano-scale rigid solid fillers HDI and HMDI, and
high anti-slip requirements, such as swimming pools diluent. Compared with existing artificial ice rinks,
and marine animal performance halls. Spray polyurea the polyurea simulated ice surface exhibits excellent
was first promoted and applied in anti-corrosion load-bearing rigidity, optimal sliding resistance
projects in the power industry and marine facilities coefficient, simple and convenient construction,
in 2004. After its application in Olympic venues in extremely rich sports colors, and meets international
2008, spray polyurea has been widely used in the top environmental standards. Furthermore, when
field of sports architecture. the ice rink is relocated or its specifications are
As a competition venue for the 2022 Hangzhou changed, it is only necessary to re-segment or splice
Asian Games, the main stadium of the Zhejiang the polyurea simulated ice body, and then pour new
Huanglong Sports Center has seen its surface layer liquid material into the joints. In addition, aspartic
of the stands age over time. It underwent renovation polyurea has characteristics such as low volatile
using a weather-resistant PAE polyurea topcoat. The organic compounds and heavy metal content, and no
A component of the material is an IPDI prepolymer, solvents, which does not pollute the environment or

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