Unlock instant, AI-driven research and patent intelligence for your innovation.
A kind of modified fully vulcanized powder rubber and its preparation method, epoxy resin composition and cured product thereof
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 for epoxy resin curing and powder rubber, which is applied in the field of modified fully vulcanized powder rubber and its preparation, epoxy resin composition and its cured product, and can solve problems such as limited, short process performance, and unsatisfactory needs
Active Publication Date: 2021-05-11
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 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
Another disadvantage of epoxy resin is heat resistance. In the field of aerospace and some adhesives that require high temperature resistance, the heat resistance of epoxy resin cannot meet the needs, although a higher temperature resistance has also been developed. Thermosetting resins such as Shuangma resin, but there are still shortcomings in terms of process performance, so how to improve the heat resistance of epoxy resin has become another hot topic in the field of epoxy resin research
According to the results of the patent disclosure, the toughness of the epoxy resin modified by the fully vulcanized powder rubber is greatly improved, and the heat resistance is not reduced, but the improvement is limited
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
[0022] Preparation of modified carboxylated nitrile powder rubber:
[0023] Put 1000 g of commercially available carboxylated nitrile latex (Shijiazhuang Hongtai Rubber Co., Ltd.) with a solid content of 45% into a plastic container, add 30 g of trimethylolpropane triacrylate while stirring, and continue stirring for one hour after the addition is completed , and then irradiated with a cobalt source with a dose of 2.5Mrad and a dose rate of 50Gy / min. Add 9.0g triethanolamine to the rubber latex vulcanized by radiation, stir for one hour, spray dry with a spray dryer, the inlet temperature of the spray dryer is 140-160°C, the outlet temperature is 40-60°C, and the The dried modified carboxylated nitrile powder rubber samples were collected in a container. The measured particle diameter of the powdered rubber was 100 nm, the gel content was 91.5%, and the swelling index was 7.6.
[0024] Preparation of cured epoxy resin:
[0025] 1. Add 60g of modified carboxylated nitrile po...
Embodiment 2
[0028] Preparation of modified carboxylated nitrile powder rubber:
[0029] Put 500 g of commercially available carboxylated nitrile latex (Shijiazhuang Hongtai Rubber Co., Ltd.) with a solid content of 45% into a plastic container, add 15 g of trimethylolpropane triacrylate while stirring, and continue stirring for one hour after the addition is completed , and then irradiated with a cobalt source with a dose of 2.5Mrad and a dose rate of 50Gy / min. Add 4.5g of 2,4,6-tris(dimethylaminomethyl)phenol to the latex vulcanized by radiation, stir for one hour, and spray dry with a spray dryer. The inlet temperature of the spray dryer is 140-160°C. The outlet temperature is 40-60° C., and the dried carboxylated nitrile rubber powder samples are collected in a cyclone separator. The measured particle diameter of the powdered rubber was 100 nm, the gel content was 91.5%, and the swelling index was 7.6.
[0030] Preparation of cured epoxy resin:
[0031] 1. Add 60g of modified carbox...
Embodiment 3
[0034] The amount of the triethanolamine that will be added in the carboxylated nitrile latex is changed from 9g to 2.25g, and all the other are identical with embodiment 1.
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
particle size
aaaaa
aaaaa
particle diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention relates to a modified fully vulcanized powder rubber in the field of polymer modification, a preparation method thereof, an epoxy resin composition and a cured product thereof. Described a kind of modified fully vulcanized powder rubber is made by the method comprising the following steps: adding an epoxy resin accelerator in the fully vulcanized rubber latex, and the epoxy resin accelerator is selected from water-soluble triethanolamine and At least one of 2,4,6-tris(dimethylaminomethyl)phenol, after stirring and mixing, the obtained rubber latex is made into particles with an average particle diameter of 50-150nm, to obtain. The preparation method of the epoxy resin cured product comprises uniformly mixing the modified fully vulcanized powder rubber and the epoxy resin prepolymer, adding curing auxiliary agents or other commonly used auxiliary agents, and then curing. The toughness and heat resistance temperature of the epoxy resin cured product of the present invention are greatly improved, and the improvement of the heat resistance performance in some epoxy resin systems has achieved unexpected effects.
Description
technical field [0001] The invention belongs to the field of polymer modification, and specifically relates to a modified fully vulcanized powder rubber, a preparation method thereof, an epoxy resin composition and a cured product thereof. Background technique [0002] Epoxy resins are an important class of thermosetting resins and are the most widely used matrix resins in polymer matrix composites. Epoxy resin has the advantages of excellent bonding performance, wear resistance, mechanical performance, electrical insulation performance, chemical stability, high and low temperature resistance, low shrinkage, easy processing and low cost. Instrumentation, light industry, construction, machinery, aerospace, coatings, electrical and electronic insulation materials and advanced composite materials have been widely used. [0003] Pure epoxy resin is a thermosetting material with a high degree of crosslinking after curing, and the crack growth is a typical brittle growth, so its ...
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