Thermosetting acrylic resin with high hardness and deep-drawing resistance, and synthetic method and application thereof
A technology of acrylic resin and synthesis method, applied in the direction of coating, etc., can solve the problems of insufficient impact resistance, reduce the hardness of the paint film, excessive hardness, etc., and achieve the effect of the balance of excellent hardness and flexibility
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preparation example 1
[0030] Preparation Example 1 Synthesis of a new hydroxy acrylate monomer (6-hydroxyhexyl acrylate)
[0031] Put 2g acrylic acid and 25g 1,6-hexanediol into the reactor, then add 0.3g p-toluenesulfonic acid and 0.1g hydroquinone, start stirring, heat up to 80℃, vacuum degree 0.06-0.04Mpa, homogeneous phase Esterification reaction, after azeotropic distillation, the water produced is discharged through the condenser, water separator, and water phase receiver, and the organic phase is returned to the top of the rectification tower to obtain the crude reaction liquid. The crude reaction liquid is added to the phase separation tank , And add the mixed liquid of xylene and water (the mass ratio of xylene to water is 5:1) for extraction, and the water phase and organic phase are obtained by extraction. The water phase is passed into the water phase fractionation tower for fractionation to obtain the new type Hydroxy acrylate monomer, product composition: 1,6-hexanediol 1.5% by weight, 6...
Embodiment 1
[0036] Choose the following raw materials:
[0037] Component
Mass (g)
20
20
20
10
15
6-hydroxyhexyl acrylate
10
1
Tert-butyl peroxybenzoate
2
[0038] Prepare a thermosetting acrylic resin with high hardness and deep drawing resistance according to the following steps:
[0039] 1) Put 20g of xylene and 20g of n-butyl acetate into the reaction kettle, and raise the temperature to a reflux state of the system, about 135°C;
[0040] 2) 20g methyl methacrylate, 10g styrene, 1g acrylic acid, 15g n-butyl acrylate, 10g-6-hydroxyhexyl acrylate prepared above 10g, 1.8g (90% of the total mass of the initiator) peroxybenzoic acid The tert-butyl ester is uniformly mixed to obtain a mixed monomer.
[0041] 3) Put the mixed monomers uniformly mixed in step 2) into the dripping tank, and add them to the reactor evenly over 3 hours, and the temperature is controlled at 135-145°C;
[0042] 4) After the dripp...
Embodiment 2
[0055] Choose the following raw materials:
[0056] Component
Mass (g)
20
20
10
20
N-butyl acrylate
15
6-hydroxyhexyl acrylate
15
acrylic acid
1
Tert-butyl peroxybenzoate
2
[0057] Prepare a thermosetting acrylic resin with high hardness and deep drawing resistance through the following steps:
[0058] 1) Put 20g of xylene and 20g of n-butyl acetate into the reaction kettle, and raise the temperature to a reflux state of the system, about 135°C;
[0059] 2) Combine 10g methyl methacrylate, 20g styrene, 1g acrylic acid, 15g n-butyl acrylate, 10g new hydroxyacrylate monomer (6-hydroxyhexyl acrylate), 1.8g (90% of the total mass of the initiator) ) Tert-butyl peroxybenzoate is uniformly mixed to obtain a mixed monomer.
[0060] 3) Put the mixed monomers uniformly mixed in step 2) into the dripping tank, and add them to the reactor evenly over 3 hours, and the temperature is controlled at 135-145°C;
[0061] 4) After the dri...
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