Active Member
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[China]
Address: No.166,Zhengyang Middle Road,Chengyang District,Qingdao, China. 266000
Contact name:louis.liu
Qingdao Exceed Fine Chemicals Co.,Ltd |
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Rigid Spray Polyurethane Foam Systems for Wall
1. Introduction
This is spray blend polyols. It reacts with isocyanate to produce foam which has excellent performances, which are as follows.
● Fine and uniformity cells.
● Low thermal conductivity.
● Perfect flame resistance
● Good low temperature dimensional stability.
It applies to all kinds of thermal insulation engineering which use the spray technology, such as cold rooms, pots, large-scale pipelines and construction metope etc.
2. Physical property
No. | Item | Specification |
1 | Appearance | Light yellow to brown yellow transparent liquid |
2 | Hydroxyl value, mgKOH/g | 310-380 |
3 | Dynamic viscosity (25℃) mpa.s | 100-200 |
4 | Specific gravity (20℃) g/ml | 1.12-1.20 |
5 | Storage temperature, ℃ | 10-25 |
6 | Storage stability, month | 6 |
3. Recommended ratio
Item | pbw |
Blend polyols | 100 |
Isocyanate | 100-105 |
4. Products reactivity
The temperature of component is 20℃, the actual value is varied according to pipe diameter and processing condition.
No. | Item | Specification |
1 | Cream time, s | 3-5 |
2 | Gel time, s | 6-10 |
5. Foam performance
No. | Item | Standard | Specification |
1 | Spray density | GB 6343 | ≥35kg/m3 |
2 | Closed-cell rate | GB 10799 | ≥90% |
3 | Initial Thermal conductivity (15℃) | GB 3399 | ≤24m W/ (m.K) |
4 | Compressive strength | GB/T8813 | ≥150kPa |
5 | Elongation at break | GB/T9641 | ≥10% |
6 | Adhesive strength | GB/T16777 | ≥120kPa |
7 | Dimensional stability (24h,-20℃); (24h, 70℃) | GB/T8811 | ≤1.0%; ≤1.5% |
8 | Water absorption | GB 8810 | ≤3% |
9 | Oxygen index | GB 8624 | ≥26 |
The data provided above are typical value, which are tested by our company. For our company’s products, the data included in the law do not have any constraints.
