A kind of method for preparing acrylate composite glue by soap-free emulsion polymerization
A soap-free emulsion polymerization, acrylate technology, applied in the direction of graft polymer adhesives, adhesives, adhesive types, etc., can solve the problems of poor water resistance and low composite strength, and achieve improved fluidity and high composite strength. , the effect of reducing surface tension
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Embodiment 1
[0034] (1) Add 65g of acrylic acid, 60g of ethanol, 0.9g of diisopropoxymethylsulfonyl persulfide, and 0.52g of azobisisobutyronitrile into the reactor. Reaction, reaction 48h.
[0035] (2) Cool down to room temperature, then add 35g of butyl acrylate and 0.28g of azobisisobutyronitrile, vacuumize and blow nitrogen, react at 65°C for 18h, and then vacuumize at 60°C to remove ethanol to obtain an acrylic acid block Oligomer.
[0036] (3) Weigh 30g of acrylic acid block oligomer in step (2), 1500g of deionized water, 2025g of butyl acrylate, 750g of methyl methacrylate, 60g of β-acryloxy propionic acid, 150g of hydroxyethyl methacrylate Ester, 60g of n-amyl alcohol, and 6g of potassium persulfate were added into an emulsification kettle, stirred and emulsified at a high speed to obtain a pre-emulsion of acrylate monomer.
[0037] (4) Add deionized water into the reaction kettle and heat it to 80-82°C, add 225g of monomer pre-emulsion and 0.9g of potassium persulfate in step (3...
Embodiment 2
[0040] (1) Add 70g of acrylic acid, 60g of ethanol, 0.9g of diisopropoxymethylsulfonyl persulfide, and 0.56g of azobisisobutyronitrile into the reactor, vacuumize at room temperature and pass in nitrogen, at 60°C Reaction, reaction 48h.
[0041] (2) Cool down to room temperature, add 30g of butyl acrylate and 0.24g of azobisisobutyronitrile, vacuumize and blow nitrogen, react at 60°C for 36h, and then vacuumize at 60°C to remove ethanol to obtain acrylic acid block low Polymer.
[0042] (3) Weigh 45g of acrylic acid block oligomer in step (2), 1500g of deionized water, 1995g of butyl acrylate, 750g of methyl methacrylate, 60g of β-acryloxypropionic acid, 180g of hydroxyethyl methacrylate Ester, 75g of n-amyl alcohol, and 6g of ammonium persulfate were added into an emulsification kettle, stirred and emulsified at a high speed to obtain a pre-emulsion of acrylate monomer.
[0043] (4) Add deionized water into the reaction kettle and heat it to 80-82°C, add 270g of monomer pre...
Embodiment 3
[0046] (1) Add 65g of acrylic acid, 60g of ethanol, 1.2g of diisopropoxymethylsulfonyl, and 0.65g of azobisisobutyronitrile into the reactor, vacuumize at room temperature and feed nitrogen, and react at 60°C , Reaction 48h.
[0047] (2) Cool down to room temperature, then add 35g of butyl acrylate and 0.35g of azobisisobutyronitrile, vacuumize and blow nitrogen, react at 62°C for 24h, and then vacuumize at 60°C to remove ethanol to obtain an acrylic acid block Oligomer.
[0048] (3) Weigh 24g of acrylic acid block oligomer in step (2), 1500g of deionized water, 1245g of butyl acrylate, 600g of isooctyl acrylate, 900g of methyl methacrylate, 60g of β-acryloyloxypropionic acid, Add 150g of hydroxyethyl methacrylate, 60g of n-amyl alcohol, and 6g of sodium persulfate into an emulsification kettle, stir and emulsify at a high speed to obtain a pre-emulsion of acrylate monomers.
[0049] (4) Add deionized water into the reaction kettle and heat to 80-82°C, 360g part of the monom...
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