Heat-sealing EAA emulsion, preparation method thereof and composite paper
A heat-sealing, emulsion technology, applied in paper, papermaking, packaging paper, etc., can solve the problems of restricting mass promotion and high cost
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[0016] The application also provides the preparation method of heat-sealing type EAA emulsion, comprises the following steps:
[0017] Mixing 9.5-11.5wt% water and 2-10wt% modifier to obtain a modifier solution;
[0018] mixing 6.5-7.5 wt% of water and 0.3-5 wt% of a cross-linking agent to obtain a cross-linking agent solution;
[0019] Mix 49-59wt% of water, 10-20wt% of EAA particle masterbatch, and 3-10wt% of dispersant, and then add the modifier solution for modification reaction to obtain a modified solution;
[0020] A cross-linking agent solution is added to the modified solution to carry out cross-linking reaction, and then 0.2-0.5 wt% of a pH regulator and 0.3-1 wt% of a defoamer are added to obtain a heat-sealable EAA emulsion.
[0021] In the above process, the modifier solution and the cross-linking agent solution were first prepared respectively. In the process of preparing the modifier solution, the mixing was carried out by stirring, and the stirring speed was 1...
Embodiment 1
[0029] A) Raw material ratio and specific type limitation:
[0030]
[0031] B) preparation method:
[0032] 1) Stir 15% soft water and modifier at room temperature for 0.5-1 hour at a stirring speed of 100-150 rpm to obtain a modifier solution;
[0033] 2) Stir 10% soft water and cross-linking agent at room temperature for 0.5-1 hour at a stirring speed of 100-150 rpm to obtain a cross-linking agent solution;
[0034] 3) First add the remaining soft water into the reactor, then add EAA granule masterbatch and dispersant, close the inlet and outlet valves of the reactor, turn on the vacuum pump to vacuumize the reactor, and reduce the pressure in the reactor to -(0.06 ~0.08) MPa, start stirring, the speed is 200~300 rpm, raise the temperature to 100~110°C and keep it for 1~2h, so that the EAA masterbatch is completely dissolved;
[0035] 4) After the temperature drops to 90-100°C, add the prepared modifier solution into the reaction kettle for modification reaction, and t...
Embodiment 2
[0038] A) Raw material ratio and specific type limitation:
[0039]
[0040] B) preparation method:
[0041] 1) Stir 15% soft water and modifier at room temperature for 0.5-1 hour at a stirring speed of 100-150 rpm to obtain a modifier solution;
[0042] 2) Stir 10% soft water and cross-linking agent at room temperature for 0.5-1 hour at a stirring speed of 100-150 rpm to obtain a cross-linking agent solution;
[0043]3) First add the remaining soft water into the reactor, then add EAA granule masterbatch and dispersant, close the inlet and outlet valves of the reactor, turn on the vacuum pump to vacuumize the reactor, and reduce the pressure in the reactor to -(0.06 ~0.08) MPa, start stirring, the speed is 200~300 rpm, raise the temperature to 100~110°C and keep it for 1~2h, so that the EAA masterbatch is completely dissolved;
[0044] 4) After the temperature drops to 90-100°C, add the prepared modifier solution into the reaction kettle for modification reaction, and th...
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