Long-acting rare earth thermal stabilizer for polyvinyl chloride and application thereof
The technology of rare earth heat stabilizer and vinyl chloride is applied in the field of preparation and optimization of long-term rare earth heat stabilizer, which can solve the problem that the primary coloring property of rare earth heat stabilizer needs to be improved, and achieves low energy consumption, simple process and long-term effect. Excellent performance
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Embodiment 1
[0040] Add 10 g of n-octanoic acid into a 500 mL three-neck flask, and heat to 110°C-115°C. 90g of 1,2,3,4-butane tetracarboxylic acid was added into the there-necked flask, and kept warm for 0.5h; under stirring, 90g of neodymium oxide was added to the reaction vessel, and then 3.2g of glacial acetic acid was added to the reaction vessel, and Keep warm for 1.0h. The reaction system is pumped under reduced pressure to remove residual volatile matter; the heating is stopped, and the reaction system is lowered to room temperature to obtain a long-acting rare earth heat stabilizer. The above reaction process is all carried out under stirring state.
[0041] Weigh 1.26g of long-acting rare earth heat stabilizer, 0.30g of zinc metal saponified product, 0.51g of β-diketone, 0.75g of monoglyceride stearate, and 0.18g of bisphenol A to form a composite heat stabilizer. Composite heat stabilizer 3g, TiO 2 Add 4g and 20g of hydrotalcite to 100g of PVC resin powder, grind and mix even...
Embodiment 2
[0043] Add 10 g of n-decanoic acid into a 500 mL three-necked flask and heat to 140°C-145°C. Add 90g of 1,2,3,4-butane tetracarboxylic acid into the there-necked flask, and keep it warm for 0.5h; under stirring, add 86g of lanthanum oxide into the reaction vessel, and then add 21.8g of 30wt% Aqueous acetic acid solution, and keep warm for 1.0h. The reaction system is pumped under reduced pressure to remove residual volatile matter; the heating is stopped, and the reaction system is lowered to room temperature to obtain a long-acting rare earth heat stabilizer. The above reaction process is all carried out under stirring state.
[0044] Weigh 1.50g of long-acting rare earth heat stabilizer, 0.30g of zinc metal saponification, 0.12g of β-diketone, 0.24g of phosphite, 0.66g of monoglyceride stearate, and 0.18g of bisphenol A, according to Example 1 The ratio of hydrotalcite, TiO 2 , PVC resin powder, and heat aging test. The specific results are shown in Table 1.
Embodiment 3
[0046] Add 10 g of n-octanoic acid into a 500 mL three-neck flask, and heat to 110°C-115°C. Add 20g of citric acid, 25g of ethylenediaminetetraacetic acid, 15g of 1,2,3,4-butanetetracarboxylic acid, and 30g of diethylenetriaminepentaacetic acid into a three-necked flask, and keep it warm for 0.5h; Add the neodymium oxide into the reaction vessel, then add 4.4g of 35wt% hydrogen peroxide solution into the reaction vessel, and keep it warm for 1.0h. The reaction system is pumped under reduced pressure to remove residual volatile matter; the heating is stopped, and the reaction system is lowered to room temperature to obtain a long-acting rare earth heat stabilizer. The above reaction process is all carried out under stirring state.
[0047] Weigh 1.26g of long-acting rare earth heat stabilizer, 0.75g of zinc metal saponification, 0.12g of β-diketone, 0.39g of phosphite, 0.42g of monoglyceride stearate, and 0.06g of bisphenol A, according to Example 1 The ratio of hydrotalcite,...
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