A kind of method of acrylamide organic solution grafting modified carbon fiber surface sizing agent
A technology of acrylamide and organic solution, applied in the direction of carbon fiber, fiber treatment, fiber type, etc., can solve the problem of low interface bonding strength, and achieve the improvement of mechanical properties, the method is simple and easy to implement, the interface shear strength and various mechanical properties improved effect
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specific Embodiment approach 1
[0020] Embodiment 1: This embodiment is a method for grafting a modified carbon fiber surface sizing agent with an acrylamide organic solution, specifically as follows:
[0021] 1. Configure the modifier solution: dissolve the modifier in a volatile organic solvent to obtain a modifier solution; the mass concentration of the modifier solution is 0.1% to 2.0%; the modifier It is an acrylamide organic small molecule containing both amino groups and unsaturated double bonds in its molecular structure;
[0022] 2. Carbon fiber surface modification: heat the modifier solution prepared in step 1 to 20°C to 80°C, and use the modifier solution at 20°C to 80°C to modify the surface of the carbon fiber at a temperature of 50°C to 80°C Dry under the condition of 0.5h~1h, obtain the carbon fiber after the surface sizing agent is chemically grafted and modified; The carbon fiber is unidirectional carbon fiber with epoxy type sizing agent, carbon fiber woven fabric with epoxy type sizing ag...
specific Embodiment approach 2
[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the acrylamide-type organic small molecules containing both amino groups and unsaturated double bonds in the molecular structure described in step 1 are acrylamide, methacrylamide, A mixture of one or more of phenylacrylamide and N-methylolacrylamide. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0025] Embodiment 3: This embodiment is different from Embodiment 1 in that the volatile organic solvent described in Step 1 is one or a mixture of alcohols, ethers and ketones. Others are the same as in the first embodiment.
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