Epoxidized SBS, blocked macromolecular active amine toughening agent, preparation and application thereof to epoxy resin

A block polymer and epoxidation technology, applied in the field of epoxy resin toughening, can solve the problems of loss of flexural strength and flexural modulus, unfavorable wide application of products, loss of elastic modulus of materials, etc. Recovery of solvent and catalyst, effect of not easy to gel

Active Publication Date: 2018-09-14
中科广化(重庆)新材料研究院有限公司 +3
View PDF9 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent (CN 103396536 A) adopts the method synthetic toughening agent of polyester polyol, and applies it to epoxy resin and acid anhydride curing system, improves the flexibility of epoxy resin, but the hydroxyl and ring in polyester polyol Oxygen resin has low reactivity, and the color of the product is brown, which is not conducive to wide application
The patent (CN 104725782A) adopts a combination of one or more of carboxylated nitrile elastic nanoparticles, nitrile elastic nanoparticles, carboxylated styrene-butadiene elastic nanoparticles, and styrene-butadiene elastic nanoparticles to toughen and modify epoxy resin. impact strength while losing flexural strength and flexural modulus
The patent application (CN 107698733 A) uses synthetic polyurethane to modify epoxy resin, which usually uses polyurethane and epoxy resin to form an interpenetrating network polymer to increase the toughness of the system, but generally loses the elastic modulus of the material and modifies darker in color
Literature [(Guo Qipeng, Wang Ke, Chen Ling, et al. Phase behavio

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
  • Epoxidized SBS, blocked macromolecular active amine toughening agent, preparation and application thereof to epoxy resin
  • Epoxidized SBS, blocked macromolecular active amine toughening agent, preparation and application thereof to epoxy resin
  • Epoxidized SBS, blocked macromolecular active amine toughening agent, preparation and application thereof to epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1, the synthesis of phosphotungstic peroxide heteropolyacid phase transfer catalyst

[0061] 7.56g tungstic acid and 35ml hydrogen peroxide (mass concentration 30%) were stirred and reacted at 65°C for 4 hours, the yellow color became colorless, stop the reaction, filter, and add 1.9ml phosphoric acid (mass volume concentration 40%) aqueous solution to the filtrate , after stirring for 15 minutes, add dropwise the dichloromethane solution of 132 grams of methyl trioctyl ammonium chloride (mass concentration 3.8%), after stirring for 15 minutes, leave to stand for layering, take the lower layer solution and carry out decompression at 45°C Distillation to obtain phosphotungstic peroxide heteropolyacid phase transfer catalyst, referred to as PWC, a colorless transparent viscous body.

[0062] The infrared spectrogram of the phosphotungstic peroxide heteropolyacid prepared in the present embodiment is as follows figure 2 shown.

Embodiment 2～3

[0063] Embodiment 2~3 is the preparation of epoxidized SBS

Embodiment 2

[0064] Embodiment 2, the preparation of epoxidized SBS (eSBS46)

[0065] Put 6.7 grams of SBS501 (produced by South Korean LG Chemical), 125.7 grams of dichloroethane, 0.67 grams of phosphotungstic acid phase transfer catalyst PWC, 15 ml of hydrogen peroxide (mass concentration 30%) and 10 ml of deionized water, at 60 ° C Stir for 3 hours, then add the reactant in normal hexane, let stand to separate and reclaim the upper layer product and the lower layer catalyst respectively, and the upper layer product is washed in a large amount of normal hexane and methanol, and vacuum-dried to obtain epoxidized SBS. The oxidation rate is 46%, referred to as eSBS46, the mass is 6.5 grams, and the yield is 97%. The reaction liquid in the lower layer is extracted and recovered with ethyl acetate to obtain 0.61 g of PWC catalyst, and the recovery rate is 91.4%.

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

No PUM Login to view more

Abstract

The invention belongs to the technical field of an epoxy resin toughening agent, and discloses epoxidized SBS, a blocked macromolecular active amine toughening agent, preparation and application thereof to epoxy resin. A preparation method of the epoxidized SBS comprises the following steps of (1) performing heating reaction on hydrogen peroxide and tungstic acid; then, mixing the materials with phosphoric acid; dripping chloridized quaternary ammonium salt; obtaining a catalyst; (2) using hydrogen peroxide as an oxygen source; performing catalytic oxidation on the SBS under the catalyst effect to obtain the epoxidized SBS. The preparation method of the toughening agent comprises the step of performing ring opening reaction on the epoxidized SBS and aminoethylpiperazine under the catalysteffect in the organic solvent to obtain a product. The catalysis activity of the catalyst is high; no side reaction exists; during the SBS epoxidation, the method is simple; the conditions are mild; the control is easy; the yield is high; the epoxidation product cannot easily gel; the product can be easily purified; the catalyst can be easily recovered. The toughening agent has the obvious toughening effect on the epoxy resin; in addition, the transparency of the epoxy resin cannot be influenced.

Description

technical field [0001] The invention belongs to the technical field of epoxy resin toughening, and relates to an epoxidized SBS, a block macromolecule active amine toughening agent, a preparation method thereof and the application of the toughening agent in epoxy resin. Background technique [0002] Epoxy resin refers to a polymer compound containing two or more epoxy groups in the molecule, with aliphatic, alicyclic or aromatic chain segments as the skeleton. Under appropriate curing conditions, such as amines, Imidazoles, acid anhydrides, or phenolic resins, etc., are polymers that can form a cured product of a three-dimensional crosslinked network. Epoxy resin has the characteristics of excellent physical and mechanical properties, electrical insulation properties, chemical corrosion resistance, adhesive properties and flexible processability, and is widely used in various industries such as light industry, machinery, aerospace, national defense, construction and coatings...

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
no application Login to view more
IPC IPC(8): C08F8/08C08F8/32C08F297/04C08L63/00C08L53/02
CPCC08F8/08C08F8/32C08L63/00C08F297/04C08L53/025
Inventor 年福伟廖兵庞浩黄健恒赵树录童惠洲
Owner 中科广化(重庆)新材料研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap