Composite foaming agent and preparation method thereof
A technology of compound foaming agent and foaming agent, applied in the foaming field, can solve the problems of complicated preparation process, high use cost and high cost, and achieve the effects of reducing use cost and simple and easy preparation method.
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[0034] The present invention also provides a preparation method of the composite blowing agent described in the above-mentioned technical scheme, comprising the following steps:
[0035] A) Azodicarbonamide is mixed with a solvent to form a blowing agent solution;
[0036] B) zirconium phosphate is mixed with the foaming agent solution, and filtered to obtain a composite foaming agent.
[0037] According to the present invention, azodicarbonamide is first mixed with a solvent to form a blowing agent solution.
[0038] Wherein, azodicarbonamide is a commercially available conventional micron-sized product. In the present invention, the solvent is preferably dimethylsulfoxide and / or dimethylformamide. In the present invention, there is no special limitation on the source of the solvent, which can be a general commercial product.
[0039] In the present invention, the volume ratio of the mass of the azodicarbonamide to the solvent is preferably (1-10) g: (10-500) mL. In the pre...
Embodiment 1
[0047] Dissolve 2.5g of AC foaming agent in 100mL dimethyl sulfoxide, stir and mix at 60°C for 20 minutes to obtain a foaming agent solution; add 2.0g of α-zirconium phosphate (α-ZrP) to the foaming agent solution, and Stir and mix at 70°C for 15 hours to obtain a mixed solution; precipitate and filter the mixed solution, wash the filter cake twice with dimethyl sulfoxide, then filter, place in a vacuum oven, and dry at 70°C to obtain α-ZrP-AC nanocomposite blowing agent.
[0048] The resulting nanocomposite blowing agent is ground to become a dry fine powder, such as figure 1 As shown, the powder can remain unagglomerated for a long time.
[0049] Gained nanocomposite blowing agent is carried out energy spectrum analysis test and scanning electron microscope test respectively, and its result is respectively as follows figure 2 and image 3 shown. Depend on figure 2 It can be seen that the N content on the surface of zirconium phosphate is greatly increased, indicating ...
Embodiment 2
[0052] Dissolve 0.5g AC foaming agent in 100mL dimethyl sulfoxide, stir and mix at 40°C for 20 minutes to obtain a foaming agent solution; add 2.0g α-zirconium phosphate (α-ZrP) to the foaming agent solution, Stir and mix at 70°C for 15 hours to obtain a mixed solution; precipitate and filter the mixed solution, wash the filter cake twice with dimethyl sulfoxide, then filter, place in a vacuum oven, and dry at 70°C to obtain α-ZrP-AC nanocomposite blowing agent.
[0053] According to the test method of Example 1, the morphology and load capacity of the resulting composite blowing agent are tested, and the results show that in the resulting composite blowing agent, the AC blowing agent is inserted between the α-ZrP layers and adsorbed on the surface of the α-ZrP layer , refined to the nanometer scale, the sheet thickness of the composite blowing agent is 5-20nm. The mass ratio of AC blowing agent to α-ZrP is 0.296:1, that is, the loading amount of α-ZrP carrier to AC blowing a...
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Abstract
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