
Solvent Resistant Type Castable Polyurethane Prepolymer for Rubber Roller
The same raw materials can be produced with different hardness by adjusting the A/B/C component ratio, and the raw materials need not be replaced in the hardness switching process.
Product Introduction
We always insist on the cost performance advantage of our Hot Casting Polyurethane Prepolyer, PU Color Sheet, MDI System Casting PU Elastomer and provide our customers with quality products at reasonable prices. Our company has always insisted on providing customers with excellent quality and quality service, and creating value wealth for the society. We take promoting development as the purpose, integrity management as the cornerstone, people-oriented management as the core, learning and innovation as the driving force to promote harmonious and stable enterprise and sustainable development. We strive to diversify our products, and at the same time the company will be re-integrated so that the scattered production and processing bases are all unified.
Three componment MDI system PU Prepolymer
1. Characteristics of MDI raw materials
The same raw materials can be produced with different hardness by adjusting the A/B/C component ratio, and the raw materials need not be replaced in the hardness switching process.
1) Need catalyst intervention
MDI three-component feedstock belongs to semi-prepolymer, and the reaction rate of-0H is less than that of-NH2. In order to obtain better physical properties and production efficiency, catalyst is needed
2) Environmental protection
The vapor pressure of MDI is much lower than that of TDI, and it has aromatic odor and little toxicity in the production process, so MDI is a new material that meets the needs of environmental protection.
2. Advantages of the MDI three-component series
* Adjustable hardness: the same grade of three-component raw materials can be replaced by permutation and combination to produce products with different hardness.
* Environmental protection: MDI vapor pressure is lower.
* Low equipment energy consumption: The application temperature of MDI products is lower, and the equipment energy consumption is greatly reduced.
* High production efficiency: The intervention of the catalyst makes the production efficiency of MDI products higher than that of TDI products, with low energy consumption and high efficiency.
Specifications
Item | Standard | Unit | Hardness | |||||||
60A | 65A | 70A | 75A | 80A | 85A | 90A | 95A | |||
HJ33M-A | - | g | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
HJ33M-B | - | g | 224 | 184 | 144 | 124 | 104 | 84 | 69 | 56 |
HJ33M-C | - | g | 7.25 | 9.05 | 10.85 | 11.75 | 12.65 | 13.55 | 14.20 | 14.80 |
Catalyst | - | ‰ | 1~3 | 1~3 | 1~3 | 1~3 | 1~3 | 1~3 | 1~3 | 1~3 |
HJ33M-A temperature | - | ℃ | 45-50 | |||||||
HJ33M-B temperature | - | ℃ | 65-75 | |||||||
HJ33M-C temperature | - | ℃ | 35-40 | |||||||
Die temperature | - | ℃ | 100-110 | |||||||
Post-maturing conditions | - | h/℃ | (12-24)/100 according to product size | |||||||
Gel time | - | mins | 7~10 | 7~10 | 7~10 | 5~7 | 5~7 | 3~5 | 3~5 | 3~5 |
Demoulding time | - | mins | 40 | 40 | 40 | 30 | 30 | 30 | 30 | 30 |
Tensile strength | GB/T528-2009 | Mpa | 35-37 | 36-38 | 36-38 | 38-40 | 38-43 | 42-47 | 43-48 | 47-52 |
100% modulus | GB/T528-2009 | Mpa | 1—2 | 2—3 | 2—3 | 2—4 | 3—5 | 5—7 | 6—8 | 8—10 |
300% modulus | GB/T528-2009 | Mpa | 2—4 | 5—8 | 7—9 | 9—12 | 11—14 | 13—16 | 14—17 | 17—20 |
Elongation at break | GB/T528-2009 | % | 551-654 | 532-637 | 522-625 | 522-623 | 481-582 | 432-535 | 422-525 | 425-527 |
Tear strength | GB/T529-2008 | KN/m | 36-44 | 42-54 | 52-63 | 61-73 | 71-82 | 81-92 | 92-104 | 104-120 |
Rebound | GB/T1681-2009 | % | 51-52 | 50-52 | 50-52 | 49-51 | 48-50 | 45-47 | 43-45 | 41-43 |
Density (25 ℃) | GB/T533-2008 | g/cm2 | 1.21 | 1.21 | 1.22 | 1.22 | 1.22 | 1.23 | 1.24 | 1.24 |
DIN drum wear | GB/T9867-2008 | mm3 | ≤40 | ≤40 | ≤38 | ≤38 | ≤38 | ≤38 | ≤35 | ≤35 |
With good reputation and high quality Solvent Resistant Type Castable Polyurethane Prepolymer for Rubber Roller, we serve users and society, and create brilliant achievements in the fierce competition of market economy. Through cultural training, incentive mechanism and work experience, we create an atmosphere that stimulates people's progress and growth, and inspires employees' career, responsibility and mission. Our company adheres to the belief of 'customer first, quality first, people-oriented', attracts outstanding talents from all sides, and continuously improves the level of operation.
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