
Hot Air Circulation Oven Heating Oven Raw Checmial Mold Heating Post Curing Vulcanization Dry Curing Reaction for Post Curing Polyurethane Products
Under conventional hardness, TDI and MDI products have no great difference in strength index, but will have obvious improvement in elasticity and wear resistance.
Product Introduction
With the goal of continuously enhancing customer satisfaction, we implement quality assurance measures under full management to ensure that all Two Componment MDI Based Polyurethane Prepolyer, MDI System Casting Polyurethane Elastomer, PU Rubber Rod are qualified. We sincerely hope that every employee can get good development in the company and grow together with the enterprise. Our company continues to provide customers and employees with quality services and rewards, and gradually enhance the core competitiveness of the company. The business philosophy of 'prosperous in innovation, based on innovation' has penetrated into all aspects of our production and operation. The development of our enterprise has maintained a rapid and stable trend. Our company is based on the 'highest service reputation, the most reliable quality, the most complete variety and the most affordable price'. We sincerely welcome the domestic and foreign customers to negotiate and cooperate.
Characteristics of MDI raw materials
1. Under conventional hardness, TDI and MDI products have no great difference in strength index, but will have obvious improvement in elasticity and wear resistance.
MDI products will have better wear life and softer hand feeling.
Indicators | Polyester TDI | Polyester MDI |
Hardness (shA) | 90 | 90 |
Tensile strength (Mpa) | 51 | 48 |
Elongation (%) | 577 | 546 |
Tear strength (KN/m) | 107 | 102 |
Rebound (%) | 30 | 40 |
Wear (mm3) | 50 | 38 |
2.Fast reaction rate
With high NCO content and catalyst intervention, the reaction rate of MDI feedstock is 1-2 times faster than that of TDI series feedstock.
3.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
4.Low application temperature of materials
Because of the high activity of MDI, the application temperature of MDI raw materials is much lower than that of TDI series raw materials in order to prevent the degradation of physical properties of final products caused by self-polymerization of raw material.
5. Because of the high resilience and flexibility, MDI series products are much better than TDI series products in the application effect of sieve plate. The improvement of elasticity is helpful to improve the impact wear resistance and self-cleaning effect of products.
Type | HJ2285M | HJ2290M | HJ2295M | HJ2385M | HJ2390M | HJ2395M |
NCO content /% | 6.0±0.2 | 7.5±0.2 | 8.8±0.2 | 6.0±0.2 | 7.5±0.2 | 8.8±0.2 |
Appearance in 20℃ | PTMEG type,white solid | Polyester type,white solid | ||||
1,4-BD dosage (100gPUP )/g | 6.2 | 7.7 | 9.1 | 6.2 | 7.7 | 9.1 |
Viscosity(85℃)/mPa·s | 1300-1500 | 900-1100 | 750-850 | 1300-1500 | 1100-1300 | 900-1100 |
Mixing temperature/℃ (PUP/1,4BD) | 85/40 | 85/40 | 80/40 | 85/40 | 85/40 | 80/40 |
Catalyst addition dosage (1000gPUP)/g | Catalyst addition dosage (1000gPUP)/g | |||||
Gel time /min | 8—10 | 5—7 | 4—6 | 8—10 | 5—7 | 4—6 |
Vulcanization Time (100-110℃)/h | 24-48 | 24-48 | 24-48 | 24-48 | 24-48 | 24-48 |
Hardness(shore A) | 85±2 | 90±2 | 95±2 | 85±2 | 90±2 | 95±2 |
Tensile strength/MPa | 34-39 | 37-42 | 43-48 | 42-47 | 48-53 | 52-57 |
100% Modulus /MPa | 4—6 | 5—8 | 10—14 | 3—6 | 8—10 | 10—13 |
300%Modulus /MPa | 10—15 | 13—18 | 20—30 | 8—14 | 16—20 | 20—24 |
Elongation at break/ % | 360-460 | 560-660 | 440-540 | 530-630 | 580-680 | 480-580 |
Tear strength(KN/m) | 60-70 | 95-105 | 105-115 | 75-85 | 105-115 | 115-125 |
Rebound/ % | 48-50 | 46-48 | 45-47 | 45-47 | 42-45 | 40-43 |
Specific gravity(25℃)(g/ cm3) | 1.11 | 1.11 | 1.12 | 1.23 | 1.23 | 1.24 |
DIN Abrasion loss /mm³ | ≤38 | ≤35 | ≤32 | ≤38 | ≤38 | ≤36 |
We constantly function like a tangible group to ensure that we can give you the very best high-quality and also the very best cost for Hot Air Circulation Oven Heating Oven Raw Checmial Mold Heating Post Curing Vulcanization Dry Curing Reaction for Post Curing Polyurethane Products. We provide good service, we believe that good cooperation, mutual trust, can establish our long-term partnership. Regarding quality as survival, prestige as guarantee, innovation as motive force, development along with advanced technology, our group hopes to make progress together with you and make untiring efforts for the bright future of this industry.
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