Acrylate emulsion and preparing method thereof
A technology of acrylate and emulsion, which is applied in textiles, papermaking, fiber treatment, etc. It can solve the problems of poor compatibility between hard monomer and modified starch, poor compatibility of modified starch, and poor stability of emulsion synthesis. , to achieve the effects of extremely high residual monomer content, high volatile organic content, and high emulsion stability
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Example
[0019] (Example 1)
[0020] The preparation method of the acrylic emulsion of this embodiment has the following steps:
[0021] ①At ambient temperature (0~40℃, the same below), add 125kg of deionized water and 8kg of reactive emulsifier A to the pre-emulsification kettle equipped with stirrer, reflux condenser and thermometer (this example uses It is a reactive emulsifier ADEKA SR-10 produced by Japan Adike Company, stirred at a speed of 180 revolutions per minute for 15 minutes.
[0022] After stirring evenly, add 6kg of methacrylic acid, 3kg of sizing agent (this example uses the sizing agent 707 produced by Guangzhou Double Bond Chemical Trading Co., Ltd.), and 20kg of crosslinking monomer A (this example uses It is a cross-linking monomer produced by Guangzhou Double Bond Chemical Trading Co., Ltd. HA), 120kg of methyl methacrylate, 100kg of butyl acrylate and 235kg of ethyl acrylate, after adding, first increase the speed to 450 rpm and stir for 30 minutes, then lower the spee...
Example
[0031] (Example 2 to Example 3)
[0032] Each embodiment is basically the same as embodiment 1, and the differences are shown in Table 1.
[0033] Table 1
[0034]
[0035] .
Example
[0036] (Application example)
[0037] The acrylic emulsions prepared in Examples 1 to 3 were applied to the preparation of glass fiber wall coverings. The properties of each emulsion, the properties of the prepared styling glue and the obtained glass fiber wall cloths are shown in Table 2.
[0038] Table 2
[0039]
[0040] .
[0041] The test methods of each performance in Table 2 are as follows:
[0042] Dilution stability: After mixing acrylic emulsion, styling glue, and water in a ratio of 1:5:8, leave it for 48 hours and observe whether it is gelling. Nothing is good, a small amount is good, a little too much but not turbid is qualified, more and more Turbidity is unqualified.
[0043] Compatibility with starch: Acrylic emulsion, starch and water are mixed in a ratio of 1:1:1, heated at 90℃, cooled to 35℃, and placed for 4 hours to observe whether there is agglomeration. Nothing is better, a small amount is good, a little too much But after stirring, the dispersion is qualified, a...
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