A benzene-free high weather resistance water-based laminating adhesive and preparation method thereof
A benzene-free, laminating adhesive technology, applied in the direction of ester copolymer adhesives, adhesives, adhesive types, etc., can solve the problem of no chemical bond bridging, adhesive water resistance, poor weather resistance, economic losses, etc. Problems, to achieve excellent weather resistance performance, excellent high temperature resistance, improve the effect of cohesion
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Embodiment 1
[0031] A benzene-free high-weather-resistant water-based laminating adhesive of this embodiment is prepared as follows (all the following raw materials are in parts by weight):
[0032] Step A. Dissolve 3 parts of reactive emulsifier in 8 parts of deionized water, and add monomer substances under stirring conditions: 13 parts of methyl methacrylate, 10 parts of butyl acrylate, 20 parts of isooctyl acrylate, acrylic acid 2 parts of functional monomer and 0.5 part of crosslinking agent to obtain pre-emulsion;
[0033] Step B, dissolving 0.4 parts of the persulfate initiator in deionized water to prepare an initiator solution with a mass concentration of 2%, and set aside.
[0034] Step C, first add 10 parts of ethylene-vinyl acetate copolymer emulsion, 40 parts of deionized water and 0.3 parts of buffer into the reaction kettle, then add 10% of the total mass part of the pre-emulsion, raise the temperature to 78-82 ° C, add the total The initiator solution of 20% by mass is kep...
Embodiment 2
[0044] A benzene-free high-weather-resistant water-based laminating adhesive of this embodiment is prepared as follows (all the following raw materials are in parts by weight):
[0045] Step A. Dissolve 2-5 parts of reactive emulsifier in 8-15 parts of deionized water, and add monomer substances under stirring conditions: 10-15 parts of methyl methacrylate, 10-20 parts of butyl acrylate, 10-20 parts of isooctyl acrylate, 1-3 parts of acrylic acid functional monomer and 0.5-1 part of crosslinking agent to obtain a pre-emulsion;
[0046] Step B, dissolving 0.3 parts of the persulfate initiator in deionized water to prepare an initiator solution with a mass concentration of 1%, and set aside.
[0047] Step C, first add 15 parts of ethylene-vinyl acetate copolymer emulsion, 20 parts of deionized water and 0.2 part of buffer into the reaction kettle, then add 7% of the total mass part of the pre-emulsion, raise the temperature to 78-82 ° C, add the total The initiator solution of ...
Embodiment 3
[0058] A benzene-free high-weather-resistant water-based laminating adhesive of this embodiment is prepared as follows (all the following raw materials are in parts by weight):
[0059] Step A. Dissolve 4 parts of reactive emulsifier in 15 parts of deionized water, and add monomer substances under stirring conditions: 10 parts of methyl methacrylate, 15 parts of butyl acrylate, 10 parts of isooctyl acrylate, acrylic acid 3 parts of functional monomer and 1 part of crosslinking agent to obtain pre-emulsion;
[0060] Step B, dissolving 0.5 parts of the persulfate initiator in deionized water to prepare an initiator solution with a mass concentration of 3%, and set aside.
[0061] Step C, first add 20 parts of ethylene-vinyl acetate copolymer emulsion, 30 parts of deionized water and 0.1 part of buffer to the reactor, then add 5-% pre-emulsion in total mass parts, raise the temperature to 78-82 ° C, add Total mass parts 10% initiator solution, constant temperature for 30 minutes...
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