Method for preparing vinyl polymer/inorganic nanoparticle composite tanning agent by in-situ cyclopolymerization method
An inorganic nanoparticle, cyclization polymerization technology, applied in small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, animal husbandry, etc. Pollution and other problems, to achieve the effect of obvious thickening, high exhaustion rate and good physical and mechanical properties
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Embodiment 1
[0013] Example 1, 1) First, 2.5g of inorganic nanoparticles TiO 2 Add 40g of dimethyl diallyl ammonium chloride into a three-necked flask and disperse in a water bath at 70°C for 30 minutes to obtain a mixture;
[0014] 2) Second, 5gNaHSO 3 Dissolve it with 10g of distilled water and add it to the mixture in the three-necked flask. Mix 6g of acrylamide, 5g of hydroxyethyl acrylate, and 50g of acrylic acid evenly to obtain a mixed monomer and add it to a constant pressure dropping funnel. Take 10g of the initiator ammonium persulfate and dissolve it in 50g of Add another dropping funnel to the distilled water;
[0015] 3) Finally, add the mixed monomer and initiator dropwise to the three-necked flask at the same time, and the dropwise addition is completed in half an hour, react at a constant temperature of 70°C for 4 hours, cool, and adjust the pH to 3 with 40% NaOH to obtain vinyl Polymer-like / inorganic nanoparticle composite tanning agent.
Embodiment 2
[0016] Example 2, 1) First, add 2g of inorganic nanoparticles ZnO and 30g of dimethyl diallyl ammonium chloride into a three-necked flask and disperse in a water bath at 60°C for 30 minutes to obtain a mixture;
[0017] 2) Second, 2gNaHSO 3 After dissolving with 4g of distilled water, add it to the mixture in the three-necked flask, mix 8g of acrylamide, 7g of hydroxyethyl acrylate, and 30g of acrylic acid evenly to obtain a mixed monomer and add it to a constant pressure dropping funnel, take 4g of the initiator ammonium persulfate and dissolve it in 20g Add another dropping funnel to the distilled water;
[0018] 3) Finally, add the mixed monomer and initiator dropwise to the three-necked flask at the same time, and the dropwise addition is completed in half an hour, react at a constant temperature of 60°C for 4 hours, cool, and adjust the pH to 3.5 with 40% NaOH to obtain vinyl Polymer-like / inorganic nanoparticle composite tanning agent.
Embodiment 3
[0019] Example 3, 1) First, 3.5g of inorganic nanoparticles SiO 2 Add 35g of dimethyl diallyl ammonium chloride into a three-necked flask and disperse in a water bath at 65°C for 30 minutes to obtain a mixture;
[0020] 2) Second, 3gNaHSO 3 Dissolved with 6g of distilled water and added to the mixture in the three-necked flask, mixed 7g of acrylamide, 8g of hydroxyethyl acrylate, and 40g of acrylic acid to obtain a mixed monomer and added to a constant pressure dropping funnel to take 10, 4, 6, 8, 5g Initiator ammonium persulfate is dissolved in the distilled water of 30g and adds another dropping funnel;
[0021]3) Finally, add the mixed monomer and initiator dropwise into the three-necked flask at the same time, and the dropwise addition is completed in half an hour, react at a constant temperature of 65°C for 3.5 hours, cool, and adjust the pH to 5.5 with 40% NaOH to obtain vinyl Polymer-like / inorganic nanoparticle composite tanning agent.
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