A kind of epoxy resin toughening agent and its preparation method and application
A technology of epoxy resin and toughening agent, applied in the field of toughening agent, can solve problems such as stickiness of cured products, low yield, incompatibility, etc., and achieve improved heat resistance, smooth cured products, and simple production methods Effect
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Embodiment 1
[0028] Weigh 20g of benzyl alcohol and 100g of amino silicone oil (amine content 0.4g / 100g) into a three-necked bottle, the viscosity of the amino silicone oil is 610cp, start stirring, control the speed at 60 rpm, and gradually add 11.2g of phenyl shrink Glyceryl ether, the reaction temperature is controlled at 65°C, the dropwise reaction time is controlled at 1 hour, after the dropwise addition is completed, the temperature is raised to 90°C, the reaction is continued for 4 hours, and the epoxy toughener is finished.
[0029] In 100g of epoxy resin, add the toughening agent and 24 grams of isophorone diamine (IPDA) prepared in this example according to the amount in Table 1, stir evenly and cure at 80°C for 6 hours, the properties of the obtained cured product As shown in Table 1:
[0030] Table 1. Properties of cured products
[0031] Toughener (g) Heat deflection temperature of cured product (°C) Impact strengthkJ / m 2
Embodiment 2
[0033] Weigh 15g of benzyl alcohol and 100g of amino silicone oil (amine content 0.6g / 100g) into a three-necked bottle, the viscosity of the amino silicone oil is 455cp, start stirring, control the speed at 80 rpm, and gradually add 10.5g of butyl shrink Glycerol ether, the reaction temperature is controlled at 65°C, and the dropwise reaction time is controlled at 1 hour. After the dropwise addition, the temperature is raised to 95°C, and the reaction is continued for 5 hours, and the epoxy toughener is finished.
[0034] In 100g of epoxy resin, according to the amount in Table 2, add the toughening agent prepared in this example, 22 grams of isophorone diamine IPDA, stir evenly and cure at 80°C for 6 hours, the properties of the obtained cured product are shown in the table 2 shows:
[0035] Table 2. Properties of Cured Products
[0036] Toughener (g) Heat deflection temperature of cured product (°C) Impact strengthkJ / m 2
Embodiment 3
[0038] Weigh 15g of benzyl alcohol and 100g of amino silicone oil (amine content 0.8g / 100g) into a three-necked flask, the viscosity of the amino silicone oil is 246cp, start stirring, control the speed at 80 rpm, and gradually add 17.8g of 1,4- For butanediol diglycidyl ether, the reaction temperature is controlled at 65°C, and the dropwise reaction time is controlled at 1 hour. After the dropwise addition, the temperature is raised to 98°C, and the reaction is continued for 6 hours, and the epoxy toughening is obtained when the material is discharged. finished product.
[0039] In 100g of epoxy resin, add the toughening agent prepared in this example and 21 grams of isophorone diamine IPDA according to the amount in Table 3, stir evenly and cure at 80°C for 6 hours, the properties of the obtained cured product are shown in the table 3 shows:
[0040] Table 3, the performance of cured product
[0041] Toughener (g) Heat deflection temperature of cured product (°C...
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