Unlock instant, AI-driven research and patent intelligence for your innovation.
Preparation method for organic silicon polyurethane adhesive
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 polyurethane adhesive, silicone technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of insufficient temperature resistance, unsatisfactory other properties, etc., and achieve easy operation and bonding performance. Excellent, simple process effect
Active Publication Date: 2014-03-26
SUZHOU JINQIANG NEW MATERIALS
View PDF1 Cites 1 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
[0005] With the rapid development of highways, railways and underground highways in China, there are more and more viscoelastic and high-strength structural adhesives. The existing epoxy-modified polyurethane adhesives in China have acceptable bonding performance, but not enough temperature resistance; Silicone modified polyurethane, heat resistance is acceptable, but other properties are not ideal
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
[0028] according to figure 1 process.
[0029] Polyester polyol (type 3010) was dehydrated at -0.09MPa, 120°C for 2 hours to obtain polyether. Cool the polyether to room temperature.
[0030] Add 90kg of TDI to the reaction kettle, then add 250kg of polyether, start stirring, raise the temperature to 90°C, react for 1h, add 10kg of organosilane coupling agent KH-570, react at 90°C for 2h, and obtain the silicone modified Polyurethane;
[0031] Add 7kg of epoxy resin to the silicone-modified polyurethane, start stirring, heat to 80-100°C, and react for 2 hours. After cooling, a colorless silicone polyurethane adhesive product is obtained. According to the standard HG / T 2409-1992, the determination of the isocyanate group-NCO content in the product is carried out. -NCO content in the product is 10%.
Embodiment 2
[0033] Polyester polyol (type 210) was dehydrated at -0.08MPa and 110°C for 2.5h to obtain polyether. Cool the polyether to room temperature, which is 25°C;
[0034] Add 80kg of MDI to the reaction kettle, then add 200kg of polyether, start stirring, raise the temperature to 80°C, react for 0.8h, add 15kg of silane coupling agent KH-560, and continue to react at the above temperature for 1.7h to obtain silicone modified permanent polyurethane;
[0035] Add 10kg of epoxy resin to the silicone-modified polyurethane, start stirring, heat to 90°C, and react for 1.5h. After cooling, a light yellow silicone polyurethane adhesive product is obtained. -NCO content in the product is 8%.
Embodiment 3
[0037] Polyester polyol (type 210) was dehydrated at -0.1MPa, 130°C for 1.5h to obtain polyether. Cool the polyether to room temperature, which is 26°C;
[0038] Add 85kg of IPDI to the reaction kettle, then add 220kg of polyether, start stirring, raise the temperature to 80°C, react for 1.5h, add 12kg of organosilane coupling agent KH-570, and react at the above temperature for 2h, to obtain silicone modified permanent polyurethane;
[0039] Add 12kg of epoxy resin to silicone-modified polyurethane, heat to 70°C, and react for 2.5h. After cooling, a colorless silicone polyurethane adhesive product is obtained. The -NCO content in the product is 12%.
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
Login to View More
Abstract
The invention provides a preparation method for an organic silicon polyurethane adhesive. According to the invention, polyether reacts with a substance having an isocyanate group so as to obtain organic silicon polyurethane which then reacts with an epoxy resin. The preparation method brought forward by the invention is simple and is easy to operate. The prepared organic silicon polyurethane adhesive has the advantages of excellent adhesive properties, good flexibility, low temperature resistance, shock resistance and resistance to an ambient temperature of 80 DEG C and can be used for bonding of industrial components undergoing mechanical oscillation and generating heat, e.g., a machine tool, a building and communal facilities in an earthquake high-prevalence area, a hot-working workshop, etc. The organic silicon polyurethane adhesive is extensively used in the industrial field.
Description
technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a preparation method of an adhesive based on polyether derivatives and a product obtained by the method. Background technique [0002] Polyurethane is the abbreviation of urethane, with the group -NHCOOR. Polyurethane adhesive is an important part of the rapidly developing polyurethane resin. It has excellent performance and has been widely used in many aspects. It is one of the important varieties among the eight synthetic adhesives. It is suitable for various structural bonding fields and has excellent flexibility characteristics. [0003] Polyurethane adhesives have many unique properties, such as good flexibility, low temperature resistance and impact resistance. But the heat resistance is not ideal enough. Silicone modified polyurethane can improve the heat resistance of polyurethane adhesive. If resin is used to modify silicone polyurethane, not only the water resis...
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 
Login to View More