Views: 0 Author: Site Editor Publish Time: 2024-12-06 Origin: Site
Polyurethane elastomers are typical multi-block copolymers, where the molecular chain consists of flexible chain segments with a glass transition temperature below room temperature and rigid chain segments with a glass transition temperature above room temperature. The oligomer polyol constitutes the flexible chain segment, diisocyanate and small molecule chain extender constitutes the rigid chain segment. Flexible and rigid chain segment and rigid chain segment of the block structure determines the specificity of its performance, mainly in:
(1) wide range of hardness. Ordinary rubber hardness range is generally in Sauer a20-90, the hardness range of plastics is about Sauer a95-Sauer d100, polyurethane elastomers can reach as low as Sauer a10 or less, and as high as Sauer d85, and do not need filler assistance.
(2) Higher strength and elasticity. Polyurethane elastomers can still maintain high strength and elasticity in a wide range of hardness.
(3) Excellent abrasion resistance, 2-10 times that of natural rubber, known as “abrasion resistant rubber”.
(4)Excellent resistance to water, grease and chemicals.
(5) High impact resistance, high fatigue resistance and high vibration resistance, suitable for high-frequency flexing applications.
(6) Good low temperature resistance. Low temperature brittleness is about -30℃ or -70℃ or less.
(7) Excellent thermal insulation properties. Due to the low thermal conductivity, compared with rubber and plastic, the thermal insulation effect is better.
(8) Good biocompatibility and anticoagulant properties.
Foundation cracks can lead to serious structural problems if not repaired properly. This article explains how polyurethane foam injection technology works, why contractors choose high pressure polyurethane foam injection machines for crack repair, and how CNMC E3 polyurethane foaming machine provides an efficient solution for waterproofing and foundation restoration projects.
On July 10, the Golf Performance Convention (GPC) Tokyo 2026 officially closed its doors at Tokyo Big Sight, bringing three days of intense industry exchange to a successful conclusion. Over 300 exhibitors from across the globe showcased the latest in golf equipment, course maintenance technology, a
CNMC-65 Economy Pneumatic Polyurethane Spray Machine, weighing only 54kg, features a 65:1 high-pressure pressure exchange ratio and a 7.5L/min single-group flow rate, suitable for 1:1 black and white material foaming construction. Pneumatically driven for safety and durability, it is widely applicable in small to medium engineering scenarios such as building exterior wall insulation, roof waterproofing and thermal insulation, cold storage foaming, and pipeline anti-corrosion and thermal insulation. This article provides a comprehensive analysis from three dimensions: product parameters, core advantages, and application scenarios, helping construction professionals make quick selections.
Hightop exhibits CE-certified mini excavators, BM750 remote-control tracked mowers, and off-road golf carts at the 2026 China Brand Goods Exhibition in Budapest. June 18–20, booth IE06-07. Custom procurement available.
Hightop showcases its upgraded golf cart for resort use at the 2026 Tokyo Golf Performance Convention. The electric tourism vehicles are designed for golf courses, resorts, hotels, and commercial transportation systems, offering comfort, safety, and long-term operational value for global buyers.
This article shares insights from CSPI EXPO 2026 in Japan, focusing on how Chinese construction machinery suppliers are expanding into international landscaping and agricultural equipment markets.
This article explains the working principle of a high pressure polyurethane foam injection machine, including material metering, high-pressure mixing, and spraying process used in construction insulation and waterproofing.
Hightop Group will showcase mini excavators and remote-controlled mowers at CSPI EXPO Japan 2026, Booth 20-77. OEM solutions available.
The CNMC-H800 polyurea spray machine is designed for high-pressure waterproofing and industrial coating applications, offering stable performance, intelligent control, and year-round operation even in low temperatures.
Hightop will showcase electric sightseeing vehicles at Eletrolar Show Brazil 2026 in São Paulo, expanding electric mobility solutions across Latin America.
