Anti-fatigue cold mixed epoxy resin material, preparation method and application thereof

1. An anti-fatigue cold mixed epoxy resin material, characterized in that it comprises: component A and component B with a mass ratio of 1:1-10:1, wherein:

a mass composition of component A is as follows:

a fluid epoxy resin, 1-100 weight parts;

an active toughening agent, 10-90 weight parts;

active diluents, 0-20 weight parts;

a coupling agent, 0.1-5 weight parts;

a defoamer, 0.01-2 weight parts;

a mass composition of component B is as follows:

an alicyclic amine or amino terminated polyether, 1-100 weight parts;

cyanoethylamine, phenolic modified amine or hydroxyalkyl modified amine, 1-100 weight parts,

wherein the active toughening agent is an epoxy terminated organosilicon block polyurethane prepolymer prepared by the reaction of hydroxyl containing epoxy compound and organosilicon block polyurethane prepolymer.

2. An anti-fatigue cold mixed epoxy resin material according to claim 1 , characterized in that: the epoxy compound containing hydroxyl is any one of or a mixture of two or more than two of hydroxylglycidyl ether, bisphenol A type epoxy resin or bisphenol F type epoxy resin; the organosilicon block polyurethane prepolymer is prepared by polymerization reaction of hydroxyl terminated polydimethylsiloxane, 2-functional polyether polyol or 2-functional polyester polyol, with diisocyanate.

3. An anti-fatigue cold mixed epoxy resin material according to claim 1 , characterized in that: the alicyclic amine or amino terminated polyether can take any one of or a mixture of two or more than two of them; the amino terminated polyether is any one of or a mixture of two or more than two of polyoxy propylene diamine, propylene oxide triamine and ethylene oxide diamine.

4. An anti-fatigue cold mixed epoxy resin material according to claim 3 , characterized in that: the cyanoethylamine is prepared by Michael reaction of alicyclic amine or amino terminated polyether with acrylonitrile.

5. An anti-fatigue cold mixed epoxy resin material according to claim 3 , characterized in that: the phenolic modified amines are prepared by Mannich reaction of alicyclic amines or amino terminated polyether with phenolic compounds and formaldehyde.

6. An anti-fatigue cold mixed epoxy resin material according to claim 3 , characterized in that: the hydroxyalkyl modified amine is prepared by ring opening addition reaction of aliphatic amine, alicyclic amine or amino terminated polyether with epoxy resin or monoepoxy compound; the aliphatic amine can be any one of or a mixture of two or more than two of aliphatic polyamine, polymethylenediamine and aromatic aliphatic amine.

7. A method of producing an anti-fatigue cold mixed epoxy resin material according to claim 1 , comprising the following steps:

(1) Preparing the active toughening agent of epoxy terminated organosilicon block polyurethane prepolymer;

(2) Weighing the fluid epoxy resin, the active toughening agent, the active diluents, the coupling agent, the defoamer by quality proportion and feeding them into the reactor, under the reaction pressure of 0.02 MPa, and gradually heated to 60-90° C., the stirring rate is 10-60 r/min, after reaction for one to three hours, filling with N 2 gas, restoring the pressure to 0.1 MPa, to prepare component A;

(3) Preparing modified amines, the modified amines are cyanoethyl modified amines, phenolic modified amines or hydroxyalkyl modified amine;

(4) Weighing the alicyclic amine or amino terminated polyether or mixture of alicyclic amine and amino terminated polyether by quality proportion, feeding modified amines into the reactor, the stirring rate is 10-60 r/min, then stirring the mixture at room temperature for 1-2 hours, to prepare component B;

(5) Mixing component A and component B uniformly according to the mass ratio of 1:1-10:1 to obtain the target product.

8. A method of producing an anti-fatigue cold mixed epoxy resin material according to claim 7 , characterized in that: in the step (1), preparing the active toughening agent of epoxy terminated organosilicon block polyurethane prepolymer by the following steps:

putting 2-functional polyols and hydroxyl terminated polydimethylsiloxane after dehydration and drying treatment into the reactor according to the mass ratio of 90:10-50:50, and then mixing them uniformly, adding polyisocyanate according to the ratio of n(-NCO):n(-OH)=1.01:1-2:1, gradually heated to 50-90° C. under the protection of N 2 gas, and reacting for 1-4 h under 0.01-0.08 MPa to obtain silicone block polyurethane prepolymer terminated with isocyanate;

filling the reactor with N 2 gas, restoring the pressure to 0.1 MPa, then adding a slight excess of hydroxy containing epoxy compounds in molar ratio, heated to 50-90° C.; and

continuing the reaction until the absorption peak derived from isocyanate group does not appear on the infrared spectrum, then stop heating to obtain the active toughening agent of epoxy terminated organosilicon block polyurethane prepolymer.