Method for preparing acrylic ester functionalized copolymer for plasticizing nylon 6
A technology of acrylates and acrylates, which is applied in the field of preparation of acrylate functionalized copolymers for nylon 6 toughening, can solve the problems of poor interface bonding between phases, difficulty in controlling the particle size and distribution of dispersed phases, etc., and achieve Effect of Improving Notched Impact Strength
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Embodiment 1
[0043] a. Pre-emulsification of nuclear layer monomer
[0044] First, add 0.1g of anionic emulsifier sodium dodecyl diphenyl ether sulfonate and 140g of deionized water into a 500ml four-necked flask, and mix and stir for 20min; then add 10g of butyl acrylate into the reaction flask, and mix and stir for 10min , that is, the pre-emulsion of the core layer monomer is obtained and set aside.
[0045] b. Pre-emulsification of shell monomer
[0046] Take three 300ml beakers, add 1.88g of anionic emulsifier sodium dodecyl diphenyl ether sulfonate, 150g of butyl acrylate, 0.75g of allyl methacrylate and 0.057g of tert-dodecyl mercaptan into the beakers in sequence 1, and then place it on an electromagnetic stirrer and mix and stir for at least 20 minutes to obtain the first monomer pre-emulsion of the shell layer; add 0.1g of anionic emulsifier sodium dodecyl diphenyl ether sulfonate and 8g of methyl methacrylate In the beaker 2, place it on an electromagnetic stirrer and mix and ...
Embodiment 2~9
[0058] The specific steps are the same as in Example 1, but the quality of the crosslinking agent and the shell-layer functional monomer acrylic acid used in Examples 2-9 are changed, as shown in Table 1 for details.
[0059] Table 1 The amount of crosslinking agent and shell functional monomer in the preparation examples 2-9 of acrylate functionalized copolymer emulsion
[0060]
[0061] The parameters of the acrylate functionalized copolymer emulsion in the above examples are listed in Table 2, and the mechanical properties of these acrylate functionalized copolymers modified PA6 are listed in Table 3.
[0062] Table 2 Parameters of acrylate functionalized copolymer emulsion
[0063]
[0064] Table 3 Mechanical properties of acrylate functionalized copolymers and nylon 6 blends
[0065]
[0066] As can be seen from Table 2, when using this invention to prepare acrylate functionalized copolymers, the conversion rate of monomers all reaches more than 93%, the content...
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