Toughening agent with chain extension function and application of toughening agent in engineering plastic processing
A toughening agent and functional technology, applied in the field of toughening agent, can solve problems such as poor mechanical properties and difficult processing of recycled PET
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Example Embodiment
[0018] Example 1
[0019] In a nitrogen environment, 0.6 parts of glycidyl methacrylate, 70 parts of methyl methacrylate, 30 parts of n-butyl acrylate and 0.6 parts of initiator dibenzoyl peroxide are mixed and dissolved in 50 parts of toluene organic solvent. Add dropwise to an organic solution containing 0.6 parts of chain transfer agent n-dodecyl mercaptan and 50 parts of toluene, the dropping time is 2h, the temperature is 60°C, and the speed is 3000rdm. After the dripping is completed, adjust the temperature to 70℃, continue the reaction for 2h, adjust the speed to 5000rdm, the resulting product is washed, filtered and dried in sequence. It is a chain-extended toughening agent with an epoxy value of 4.2×10 -3 mol / 100g.
[0020] 100 parts of rPET (intrinsic viscosity of 0.60dl / g), 50 parts of the above-mentioned chain extension type toughener (epoxy value 4.2×10 -3 mol / 100g), 0.1 part of antioxidant 1024, 0.2 part of antioxidant 168, blended for 5 minutes, and then added to the...
Example Embodiment
[0021] Example 2
[0022] In a nitrogen environment, 1.0 part of glycidyl acrylate, 80 parts of styrene, 20 parts of n-butyl acrylate and 0.3 parts of initiator azobisisobutyronitrile are mixed and dissolved in 50 parts of toluene organic solvent, and added dropwise containing 0.5 In an organic solution of 1 part chain transfer agent n-dodecyl mercaptan and 50 parts toluene, the dropping time is 2.5h, the temperature is 70℃, and the rotation speed is 3000rdm. After the addition is complete, continue the reaction for 2.5 hours, adjust the temperature to 80°C, and adjust the speed to 5000 rdm. The resulting product is washed, filtered and dried in sequence. It is a chain-extended toughening agent with an epoxy value of 7.04×10 -3 mol / 100g.
[0023] 100 parts of rPET (intrinsic viscosity of 0.60dl / g), 40 parts of the above-mentioned chain extension type toughener (epoxy value 7.04×10 -3 mol / 100g), 0.2 part of antioxidant 1024, 0.2 part of antioxidant 168, after blending for 5 minutes...
Example Embodiment
[0024] Example 3
[0025] In a nitrogen environment, 1.5 parts of glycidyl acrylate, 60 parts of styrene, 40 parts of ethyl acrylate and 0.3 parts of initiator azobisisobutyronitrile are mixed and dissolved in 50 parts of toluene organic solvent, and 0.5 parts are added dropwise. The chain transfer agent n-butyl mercaptan, 50 parts of toluene in an organic solution, the dripping time is 2h, the temperature is 70℃, and the rotation speed is 3000rdm. After the addition is complete, continue the reaction for 2 hours, adjust the temperature to 80°C, and adjust the speed to 5000 rdm. The resulting product is washed, filtered and dried in sequence. It is a chain-extending toughening agent with an epoxy value of 1.05×10 -2 mol / 100g.
[0026] 100 parts of rPET (intrinsic viscosity of 0.60dl / g), 15 parts of the above-mentioned chain-extended toughener (epoxy value 1.05×10 -2 mol / 100g), 0.4 parts of antioxidant 1024, 0.4 parts of antioxidant 168, blended for 5 minutes, and then added to the...
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