Unlock instant, AI-driven research and patent intelligence for your innovation.
Preparation method of medium-temperature fast-curing epoxy resin composition for hot-melt method prepreg
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An epoxy resin and fast curing technology, which is applied in the field of preparation of medium temperature fast curing epoxy resin compositions, can solve the problems of long mixing process, slow curing speed and high curing temperature, and can shorten the thermal history and reduce the curing temperature. , the effect of uniform dispersion
Active Publication Date: 2018-02-13
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
[0007] Aiming at the technical problems of high curing temperature, slow curing speed, long mixing process and high energy consumption of the medium-temperature curing resin matrix for commonly used hot-melt prepregs, the invention provides a medium-temperature curing epoxy resin for hot-melt prepregs. The preparation method of resin composition
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
[0038] The epoxy resin composition is composed by mass fraction: 331, 60 parts; 671, 40 parts; 1400F, 3 parts; LH-210, 3 parts.
[0039] The preparation method of epoxy resin composition:
[0040] a. Add 671 and 331 with a maximum particle size of less than 5mm in the container of the rotation and revolution vacuum mixer, set the stirring conditions as follows: stirring speed 2000 rpm, vacuum degree 0.3kPa, stirring time 11 minutes, after the stirring program is automatically completed, get Degas completely and mix the epoxy resin mixture evenly.
[0041] b. Add 331, 1400F, LH-210 and an appropriate amount of glass beads with a particle size between 2 and 4mm in the container of the rotation and revolution vacuum mixer as grinding media, and set the stirring conditions as follows: stirring speed 1200 rpm, vacuum The temperature is 0.3kPa, and the stirring time is 5 minutes. After the stirring program is automatically completed, a cured system mixture with complete defoaming a...
Embodiment 2
[0046] The epoxy resin composition is composed by mass fraction: 331, 60 parts; 671, 40 parts; 1400F, 3 parts; LH-210, 2 parts.
[0047] The preparation method of the epoxy resin composition and its cured product is the same as in Example 1.
[0048] Table 1 shows the test results of the epoxy resin composition and its cured product.
Embodiment 3
[0050] The epoxy resin composition is composed by mass fraction: 331, 60 parts; 671, 40 parts; 1400F, 3 parts; LH-210, 1 part.
[0051] The preparation method of the epoxy resin composition and its cured product is the same as in Example 1.
[0052] Table 1 shows the test results of the epoxy resin composition and its cured product.
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
diameter
aaaaa
aaaaa
particle diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention relates to a preparation method of a medium-temperature fast-curing epoxy resin composition for hot-melt prepregs, which mainly solves the problems of high curing temperature, slow curing speed and mixing process of the medium-temperature curing resin matrix used for hot-melt prepregs. Long process, high energy consumption and other technical issues. The present invention solves the above-mentioned technical problems by adopting the technical scheme of mixing the epoxyresin matrix and adopting modified imidazole as the accelerator of the dicyandiamide curing agent by adopting the rotation and revolution vacuum mixer, and the epoxy resin composition provided by the present invention can be used It can be used as the resin matrix of prepregs used in aerospace, military industry, sports and leisure products, automobiles, yachts and other industries.
Description
technical field [0001] The invention relates to a preparation method of a medium-temperature fast-curing epoxy resin composition for a hot-melt method prepreg. Background technique [0002] Prepreg is a composition of resin matrix and reinforcing fiber made by impregnating continuous fiber or fabric with resin matrix, and is an intermediate material for the production of composite materials. Prepregs are divided into thermosetting prepregs and thermoplastic prepregs according to the type of resin matrix. Thermosetting prepreg has mature production process, good bonding performance and low production price, occupying most of the prepreg market; the impregnation process of thermoplastic prepreg is still immature and is still in the research and development stage. The resin matrix that can be used to produce thermosetting prepreg mainly includes epoxy resin, phenolic resin, unsaturated polyester resin, cyanate resin, bismaleimide resin, etc., among which epoxy resin has good m...
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