Casting Machine Polyurethane Machine Making Highly Wear-Resistant Materials
They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.
Product Introduction
Our company continuously improves productivity and provides customers with rich and attractive PU RUBBER SHEET, Casting Polyurethane Elastomer, PU Color Stick. With the leading technology and talent advantages, our company's business has entered the brand's high-end market. While using the tenet of 'faith-based, customer first', we welcome customers to phone or e-mail us for cooperation. According to user demand and market forecast, we implement production plan management, organize and coordinate material procurement, material management, production site management, corresponding technology, quality assurance, capital assurance, enterprise logistics, administration and other management, so as to ensure the normal operation of the enterprise in the market economy. Our company always insists on the service tenet of "quality first, safety first, customer first", and will accelerate the new development of the enterprise with the pioneering spirit.
PTMEG based Casting Polyurethane prepolymer
1. PTMEG based polyurethane prepolymer is the higher level of Polyether prepolymer, they are recommended for applications where parts undergo dynamic stress, etc, they incur lower heat build-up. They also have advantages in high resilience, low temperature performance and resistance to water attack(hydrolysis). Polyethers also have lower viscosity and specific gravity.
2. Specifications,Application and operation details.
PTMEG/TDI system Casting Polyurethane prepolymer
Item | Type | |||
HJ-2185 | HJ-2190 | HJ-2195 | HJ-2197 | |
NCO% Content | 3.5±0.2 | 4.2±0.2 | 6.0±0.2 | 6.5±0.2 |
Density 25℃/(g/cm³) | 1.11 | 1.11 | 1.12 | 1.12 |
Viscosity 80℃/mpa·s | 900-1100 | 800-1000 | 700-900 | 600-800 |
Appearance at 25℃ | Colorless transparent liquid | |||
Mix Temperature ℃ Prepolymer /Moca | 85℃/115℃ | 80℃/115℃ | 75℃/115℃ | 75℃/115℃ |
Gel Time /min | 13-18 | 10-15 | 6-10 | 3-5 |
Vulcanization Time (h) | 25-16 | 25-16 | 25-16 | 25-16 |
Physical Properties | ||||
Hardness (Shore A) | 85±2 | 90±2 | 95±2 | 97±2 |
Tensile Strength (Mpa) | 25-28 | 33-38 | 38-45 | 40-46 |
100% Modulus (Mpa) | 11-12 | 14-16 | 16-18 | 18-20 |
300% Modulus (Mpa) | 18-20 | 28-30 | 38-42 | 40-43 |
Elongation at Break (%) | 360-420 | 350-400 | 280-350 | 250-300 |
Tear Strength (KN/m) | 60-65 | 75-85 | 90-100 | 95-105 |
Compression permanent deformation % | 4-6 | 4-6 | 2-4 | 2-4 |
DIN Abrasion loss（mm³） | ≤45 | ≤40 | ≤40 | ≤40 |
Resilience %/25℃ | 40-45 | 35-40 | 28-32 | 26-30 |
- Product application : PU Rollers, casters, seals, pistons, classification screens, flotation machine impellers, forklift tires, molds, slurry pump linings and other products. - Operation details:After vacuum degasing at 75-85 ℃, the prepolymer is mixed with melted MOCA for casting and vulcanization. It is suitable for manual and mechanical operation. - Storage:Store in a cool and dry place and use up as soon as possible after opening; If it cannot be used up at one time, it shall be sealed with nitrogen; The second opening needs to be used for defoaming, and the original storage period is six months. - Packing:20kg or 200kg iron drum | ||||
Our company has always won widespread praise and praise from all walks of life with its strong overall strength, pursuit of excellence in quality, diverse product structure and perfect and sincere sales services, and has created countless classic Casting Machine Polyurethane Machine Making Highly Wear-Resistant Materials brand cases. We are committed to the development of society as a pride and make unremitting efforts to achieve this goal. We continue to improve the company's environmental image and realize the harmonious development of the company's economy and environment.
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