Composite ternary nano rare-earth complex heat stabilizer
A composite heat stabilizer and nano-complex technology, applied in the field of PVC heat stabilizers, to achieve the effects of easy packaging and transportation, reasonable matching, and excellent thermal stability
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Example Embodiment
[0022] Example 1
[0023] A ternary nano-rare earth complex composite heat stabilizer, including components of the following masses:
[0024] Rare earth lanthanum-stearic acid-dibenzoylmethane ternary nanocomplex 3Kg,
[0025] Calcium stearate 42Kg,
[0026] Zinc stearate 20Kg,
[0027] Epoxidized soybean oil 18Kg,
[0028] Pentaerythritol 7Kg,
[0029] Phosphite 10Kg.
[0030] The preparation method of rare earth lanthanum-stearic acid-dibenzoylmethane ternary nanocomplex includes the following steps:
[0031] (1) Accurately weigh lanthanum nitrate, stearic acid and dibenzoylmethane, and dissolve them in absolute ethanol. The molar ratio of lanthanum nitrate, stearic acid and dibenzoylmethane is 1:2:1, stir and mix After uniformity, add polyvinylpyrrolidone with a concentration of 0.1g / ml, stir and dissolve to obtain a mixed solution;
[0032] (2) Adjust the pH of the mixed solution to 7.5 with ammonia water, transfer the mixed solution into a three-necked flask, and reflux at 90°C for 4 h...
Example Embodiment
[0035] Example 2
[0036] A ternary nano-rare earth complex composite heat stabilizer, including components of the following masses:
[0037] Rare earth cerium-stearic acid-dibenzoylmethane ternary nanocomplex 2Kg,
[0038] Calcium stearate 36Kg,
[0039] Zinc stearate 13Kg,
[0040] Epoxidized soybean oil 25Kg,
[0041] Pentaerythritol 14Kg,
[0042] Phosphite 10Kg.
[0043] The preparation method of the rare earth cerium-stearic acid-dibenzoylmethane ternary nanocomplex is the same as in Example 1.
[0044] For the thermal stabilizer prepared in this example, the Congo red method was used to test the thermal stability performance. The test method was the same as that in Example 1. The test result showed that the thermal stability time was 18 minutes.
Example Embodiment
[0045] Example 3
[0046] A ternary nano-rare earth complex composite heat stabilizer, including components of the following masses:
[0047] Rare earth yttrium-stearic acid-dibenzoylmethane ternary nanocomplex 3Kg,
[0048] Calcium stearate 37Kg,
[0049] Zinc stearate 20Kg,
[0050] Epoxidized soybean oil 22Kg,
[0051] Phosphite 18Kg.
[0052] The preparation method of the rare earth cerium-stearic acid-dibenzoylmethane ternary nanocomplex is the same as in Example 1.
[0053] For the thermal stabilizer prepared in this example, the Congo red method was used for thermal stability test. The test method was the same as that in Example 1. The test result showed that the thermal stability time was 27 minutes.
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