Insulative polyurethane rigid foam based on tdi liquid residue
A technology of residue and polyurethane, which is applied in the field of heat-insulating polyurethane rigid foam, can solve the problems of thermal insulation and improvement performance of TDI liquid residue, and achieve cost-effective recovery and environmental friendliness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0100] Embodiment 1. Preparation of isocyanate composition
[0101] According to the compositions shown in Table 1, several isocyanate compositions were prepared. The amounts of each component are in parts by weight.
[0102] For each composition, the ingredients listed in Table 1 were charged into a container in the amount specified in Table 1 and stirred at 1800 RPM with a Pendraulik LD 50 Mixer (commercially available from Pendraulik Maschinen und Apparate GmbH, NI, Germany) for 3 -5min to obtain the target composition.
[0103] Table 1
[0104]
Embodiment 2
[0105] Embodiment 2. The preparation of rigid polyurethane foam
[0106] 1. Polyurethane rigid foam 1
[0107] The PS3152, GR8348, TCPP, L6900, PC46, PC-8, water and 141b listed in the "RF 1" column of Table 2 are filled into the container with their specified amounts, and stirred at 1800 RPM with Pendraulik LD 50 Mixer for 3- For 5 min, mixture 1 was formed.
[0108]Mix 117.1 parts by weight of the composition 1 of the present invention prepared above, and all of the mixture 1 prepared above in a container, and stir with a Pendraulik LD 50 Mixer at 1800 RPM for 5-8 seconds to form a reaction mixture 1.
[0109] Then, the formed reaction mixture 1 was poured into a mold of 40*40*10 cm, and kept for 8 minutes to form polyurethane rigid foam 1 (foam 1). The mold temperature was 45°C. The obtained foam 1 is then removed from the mould.
[0110] 2. Other polyurethane rigid foam
[0111] Other foams listed in Table 3 were prepared by the same method as the preparation of polyu...
Embodiment 3
[0116] Embodiment 3. The performance test of polyurethane rigid foam
[0117] Test the core density, K-factor (mW / m*K) and compressive strength (N / mm 3 ) and dimensional stability (-30°C / 24h).
[0118] 1. Core density
[0119] The obtained foam samples were tested for core density after removal of the dense skin. The result is expressed in kg / m 3 count.
[0120] 2. K-factor
[0121] K-factor was tested in an instrument EKO HC-074 / 200 (commercially available from LaserComp, Inc., Massachusetts, U.S.A.) according to the instruction manual, wherein the upper plate was set at 15°C and the lower plate was set at 31°C.
[0122] 3. Compressive strength
[0123] Compressive strength was tested according to standard method DIN EN 826.
[0124] 4. Dimensional stability
[0125] Foam samples with initial dimensions of length, width and height were placed at -30°C for 24 hours, and then the change in each dimension was measured. The percent change is reported in Table 3.
[0126...
PUM
| Property | Measurement | Unit |
|---|---|---|
| compressive stress | aaaaa | aaaaa |
| density | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More