Method for preparing wollastonite toughened epoxy resin

[0019] A kind of preparation method of wollastonite toughened epoxy resin described in the present embodiment 1, comprises the following steps:

[0020] (1) Hydrolyze the silane coupling agent KH-570 in a mixed solution of absolute ethanol and deionized water for 1.5h, add it to a round bottom flask, and add a certain amount of wollastonite; the volume ratio of ethanol to water is 1 : 1, the consumption of coupling agent is 1-30% of wollastonite quality;

[0021] (2) Put the flask in 50°C waters, react under electromagnetic stirring for 2.5h, after the reaction, the mixed solution is suction filtered, and the sediment is placed in a vacuum oven and dried at 110°C for 11 h;

[0022] (3) Grinding the dry modified wollastonite in a planetary ball mill for 1.5 h at a stirring rate of 200-1000r / min to obtain wet-process modified wollastonite;

[0023] (4) The modified wollastonite is mixed with bisphenol A epoxy resin 127 and ground for 3 hours by a three-roll mill to obtain a mast

[0028] A kind of preparation method of wollastonite toughened epoxy resin described in present embodiment 2, comprises the following steps:

[0029] (1) Hydrolyze the silane coupling agent KH-570 in a mixed solution of absolute ethanol and deionized water for 2 hours, add it into a round bottom flask, and add a certain amount of wollastonite; the volume ratio of ethanol to water is 1: 4. The amount of coupling agent is 1-30% of the wollastonite mass;

[0030] (2) Put the flask in 80°C waters, and react for 3h under electromagnetic stirring. After the reaction, the mixed solution is suction-filtered, and the sediment is placed in a vacuum oven and dried at 120°C for 12h;

[0031] (3) Grinding the dry modified wollastonite in a planetary ball mill for 2 hours at a stirring rate of 200-1000r / min to obtain wet-process modified wollastonite;

[0032] (4) The modified wollastonite is mixed with bisphenol A epoxy resin 127 and ground for 3 hours by a three-roll mill to obtain a maste

[0037] A kind of preparation method of wollastonite toughened epoxy resin described in present embodiment 3, comprises the following steps:

[0038] (1) Hydrolyze the silane coupling agent KH-570 in a mixed solution of absolute ethanol and deionized water for 2 hours, add it into a round bottom flask, and add a certain amount of wollastonite; the volume ratio of ethanol to water is 1: 5. The amount of coupling agent is 1-30% of the wollastonite mass;

[0039] (2) Put the flask in water at 85°C and react for 3h under electromagnetic stirring. After the reaction is over, filter the mixture with suction, and place the sediment in a vacuum oven to dry at 130°C for 13h;

[0040] (3) Grinding the dry modified wollastonite in a planetary ball mill for 2 hours at a stirring rate of 200-1000r / min to obtain wet-process modified wollastonite;

[0041] (4) The modified wollastonite is mixed with bisphenol A epoxy resin 127 and ground for 3 hours by a three-roll mill to obtain a masterbatc