Organic silicon modified styrene-acrylate microemulsion reinforcing agent as well as preparation method and application thereof
A silicone and microemulsion technology, applied in the direction of reinforcing agent addition, can solve the problems of secondary fiber expansion and application upgrade restrictions, difficulty in meeting high performance requirements of paper, unfavorable environment or application effect, etc., to achieve strong affinity, High product stability, improvement of folding endurance and dry and wet strength
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[0036] Example 1:
[0037] The preparation method of organosilicon modified styrene-acrylic microemulsion enhancer includes the following steps:
[0038] 1) Add 5 parts of acrylic acid, 0.2 parts of hydroxyethyl acrylate, 20 parts of butyl acrylate, 40 parts of styrene, and 2 parts of vinyl trimethyl silane to a reactor equipped with a stirrer, a thermometer and a reflux tube. , 0.2 parts of potassium persulfate as initiator, after initiating the reaction at 80°C for 1.5 hours, add the remaining 0.3 parts of initiator to continue the reaction for 4 hours;
[0039] 2) Then cool to room temperature, add triethylamine to neutralize the system to pH 7.5;
[0040] 3) Finally, under high-speed stirring (1000-3000r / min), slowly add 90 parts of deionized water at 80°C for dispersion to obtain the silicone-modified styrene-acrylic microemulsion enhancer.
Example Embodiment
[0041] Example 2:
[0042] The preparation method of organosilicon modified styrene-acrylic microemulsion enhancer includes the following steps:
[0043] 1) Add 6 parts of acrylic acid, 0.4 parts of hydroxypropyl methacrylate, 32 parts of hexyl methacrylate, 55 parts of styrene, and 3 parts of vinyl in a reactor equipped with a stirrer, a thermometer and a reflux tube. Triethoxysilane, 0.25 part of ammonium persulfate as initiator, after initiating the reaction at 70°C for 2h, add the remaining 0.34 part of initiator and continue the reaction for 3h;
[0044] 2) Then cool to room temperature, add sodium hydroxide to neutralize the system to pH 8;
[0045] 3) Finally, under high-speed stirring (1000-3000r / min), slowly add 108 parts of 75°C deionized water for dispersion, and then the organic silicon modified styrene-acrylic microemulsion enhancer can be obtained.
Example Embodiment
[0046] Example 3:
[0047] The preparation method of organosilicon modified styrene-acrylic microemulsion enhancer includes the following steps:
[0048] 1) Add 7 parts of acrylic acid, 0.3 parts of methylol acrylamide, 38 parts of n-octyl methacrylate, 63 parts of styrene, and 5 parts of allyl into a reactor equipped with a stirrer, a thermometer and a reflux tube. Dimethyl chlorosilane, 1.1 parts of hydrogen peroxide as the initiator, after the reaction was initiated at 75°C for 1 hour, then the remaining 0.9 parts of initiator was added to continue the reaction for 4 hours;
[0049] 2) Then cool to room temperature, add potassium hydroxide to neutralize the system to pH 9;
[0050] 3) Finally, under high-speed stirring (1000-3000r / min), 178 parts of deionized water at 82°C are slowly added for dispersion to obtain the silicone-modified styrene-acrylic microemulsion enhancer.
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