Product: Polyurethane black material polymerization MDI Wanhua PM200 Papi…
- Appearance: Brown-red liquid
- Packaging: 25Kg/barrel 250kg/barrel
- Use one: It is widely used in hard foam polyurethane products such as insulation materials, boards, imitation wood, and spray coatings, as well as soft sponge materials such as high rebound and slow rebound (including polyurethane decorative parts for cars, motorcycles, etc.).Due to its composition and structure, it has good foam flow properties and is also suitable for the manufacture of products that require strict flow properties of foaming raw solutions.
Polyurethane black material: In the polyurethane hard ester foam raw material system, the isocyanate component is commonly known as polyurethane black material; the functionality is about 2.6~2.7, and it is a dark brown liquid at room temperature. The viscosity ratioPolyurethane white material(combined polyether) large.The polyurethane black material and the white material are mixed in proportion and polymerized to form a polyurethane rigid foam with an independent closed cell structure. It is an ideal organic low-temperature insulation material with the characteristics of small thermal conductivity, energy saving, shockproof, and strong adaptability.It can be prefabricated or spray-cast on-site.It is widely used in thermal insulation in refineries, chemical plants, ethylene chemicals, cold storage, single refrigeration and air conditioning, refrigerators and construction industries.Polyurethane foam insulation system has been widely used in the domestic insulation field due to its good insulation performance, rapid construction, and reliable performance.
storage method
Isocyanate (commonly known as black material) and combined polyether (commonly known as white material) are stored in sealed containers to isolate air and prevent moisture absorption.
Isocyanate (black material) and combined polyether material (white material) barrels should not be exposed to the sun, away from heat sources, and placed in a cool and dry place. If the barrel is placed upright, no water should accumulate on the lid.
If the entire barrel of material cannot be used up at one time, close the lid tightly after each use to prevent water vapor and impurities from entering the barrel and affecting the quality.If more than two grades of polyether are used in combination, they should be stacked by grade and clearly marked.The combined polyether with ordinary flame retardants should not be stored for too long and should be used on the same day it is prepared, otherwise it will easily cause deterioration and affect the foaming quality.
|
| ||||||||||||||||||||
|
|
| |||||||||||||||||||
|
|
| |||||||||||||||||||
