Method for preparing PIR (polyisocyanurate) material with ionic liquid catalyst
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of ionic liquid and catalytic preparation, applied in the field of PIR material preparation
Inactive Publication Date: 2012-05-02
JIANGSU KETAI NEW HEAT INSULATION MATERIAL
View PDF5 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
And use ionic liquid to directly catalyze polyurethane reaction, especially the application of PIR reaction, there is no report
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0029] 3920g combined polyether, the hydroxyl value is about 200mgKOH / g, of which:
[0030]
[0031] Fully mix with 80g of ionic liquid AMIMCl at 40°C, and react with 6000g pMDI through a high-pressure machine into a mold, the material temperature is 25°C, the high-pressure machine pressure is 15MPa, and the mold temperature is 40°C. After 30 minutes demoulding, the obtained density is 70kg / m 3 of PIR material.
Embodiment 2
[0033] 7870g combined polyether, the hydroxyl value is about 180mgKOH / g, of which:
[0034]
[0035] Fully mixed with 130g ionic liquid BMIMBF4 at 20°C, and reacted with 16000g pMDI through a high-pressure machine and injected into a mold. The material temperature was 25°C, the high-pressure machine pressure was 35MPa, and the mold temperature was 50°C. After 60 minutes demoulding, the obtained density is 50kg / m 3 of PIR material.
Embodiment 3
[0037] 39200g combined polyether, the hydroxyl value is about 300mgKOH / g, of which:
[0038] Polyoxypropylene polyol 85%
[0039] Polyoxyethylene polyol 2%
[0040] Polymer polyol 13%
[0041] (hydroxyl value is about 240mgKOH / g) and 800g ionic liquid BMIMCH 3 COOH was fully mixed at 20°C, and reacted with 80,000g pMDI through a high-pressure machine and injected into the mold. The material temperature was 25°C, the pressure of the high-pressure machine was 45MPa, and the mold temperature was 60°C. After 600 minutes demoulding, the obtained density is 500kg / m 3 of PIR material.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
hydroxyl value
aaaaa
aaaaa
hydroxyl value
aaaaa
aaaaa
hydroxyl value
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a method for preparing a PIR (polyisocyanurate) material with an ionic liquid catalyst. By utilizing the catalytic activity and other performances of an ionic liquid to prepare a PIR material, the method comprises: first mixing an ionic liquid with a combined polyether, then injecting the mixture and isocyanates into a mould for reaction by a high-pressure foaming machine, or directly injecting the ionic liquid, the combined polyether and isocyanates into a mould for reaction by a high-pressure foaming machine, conducting demoulding after reaction, thus obtaining a PIR material. The method of the invention accelerates the curing speed of PIR, avoids using a volatile catalyst, and also optimizes performances of the PIR material.
Description
technical field [0001] The invention belongs to the field of PIR material preparation, and in particular relates to a method for preparing PIR material by using ionic liquid catalysis. Background technique [0002] Polyurethane materials have been widely used in various industries such as automobiles, construction, home appliances, and energy. Among them, PIR material (polyisocyanurate) is widely used in the fields of liquefied natural gas, liquefied ethylene, liquefied petroleum gas storage and transportation, and building insulation due to its good flame retardancy, low linear expansion coefficient and thermal conductivity. Wide range of applications. However, due to the complex reaction process and slow curing process of PIR materials, the requirements for processing technology are very strict. In addition, the traditional amine, tin and mercury catalysts also have certain pollution to the environment. [0003] Ionic liquids are liquids that are composed entirely of io...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more