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Application of Calcium Acetylacetonate/zinc Composite in Thermal Stability of PVC

Posted on 2023-01-09 By admin

An alkaline condition allowed the creation of a calcium and acetylacetonate/zinc mixture using zinc chloride, calcium chloride and raw materials. It was used as an additional heat stabilizer for polyvinylchloride (PVC). PVC products were tested for thermal stability using Congo red test and oven heat. The synergistic effect of PVC products was observed at a 15:1 calcium/zinc mole ratio. Thermal stability took 70 minutes and the PVC sample was blackened for 110 minutes. This is significantly faster than the single ingredient acetyl. Acetone calcium. Also, the addition of a mass fraction of 1.2% calcium acetylacetonate/zinc, thermal stability time of up to 81min, PVC test piece to 190 min wholly blackened and better than the commonly used epoxy soybean oil and dipentaerythritol auxiliary class Heat stabilizers.

A polyvinylchloride PVC is a versatile material that has great properties, including low cost and corrosion resistance. Also, it’s strong, high-strength, and flame resistant. It can be used to make building materials, chemicals, packaging, among other areas, making it one of the five best-selling general-purpose plastics in the world. PVC’s thermal resistance is low. PVC products are best processed at 180 °C. Once the temperature gets to 130 °C, PVC begins to degrade and produce toxic hydrogen chloride. PVC products become darker and have lower mechanical and mechanical property. PVC is. Addition of heat stabilisers to products is a crucial measure. The main heat stabilisers currently in use are metal soaps with auxiliary heat stabilisers, lead salts, organotins and metal soaps. Heat stabilizers containing lead are highly toxic to both humans and the natural environment. Therefore, they are gradually being phased out. Although organotins can perform exceptionally well, these are costly. Non-toxic metal soap heat stabilisers, however, have lower thermal stability and are less expensive.

The b-diketone is a heat stabilizer with low toxicities. It’s widely used in auxiliary stability for metal soaps. Current synthesis of –diketone Calcium or Zinc materials is done separately. PVC products with different colors are tested for their respective coloration.

PVC auxiliary Heat Stabilizer acetylacetonate Calcium Composite was synthesized at room temperatures based upon the synergistic impact of calcium/acetylacetonate/zinc on PVC’s thermal stability. A variety of characterisation methods were used to identify the product. The metal soap melt stabilizer calciumstearate was also added to PVC to test the effect of the additive on PVC’s thermal stability.
Calcium acetylacetonate/zinc falls under the –diketone sodium-assisted heating stabilizer. Their heat stabilizer mechanism mirrors that of –diketone. First, PVC products are able to continuously remove HCl when heated. Additionally, a larger number of conjugated double bonds can make PVC products darker. The calcium acetylacetonate/zinc blend is able absorb HCl that has been removed from PVC and will produce acetylacetone. ZnCl2 catalysis will produce acetylacetone.

In oven heat aging tests and Congo-red testing, it was found that the joint effect of calcium acetylacetonate/zinc.molar ratio was 15. Heat stability times were longer than those of single-component acetylacetonate. Copper calcium or zinc acetylacetonate. With a PVC Mass fraction of 1.2% Calcium Acetylacetonate/zinc Acetatetonate having a molar ratio 15:1, thermal stability times of up to 81 min are possible. This is significantly more than what is commonly used as an auxiliary heat stabilizer epoxy soybean oil, double and triple. Pentaerythritol.

A calcium acetylacetonate/zinc alloy material greatly increases the thermal stability. This is because it absorbs HCl. Acetylacetone ligand then replaces the active allylchloride on PVC by acetylacetone ligand. Acetyl Acetone also absorbs excess ZnCl2 which reduces its concentration.

Luoyang Trunnano Tech Co., Ltd., also known as TRUNNANO, is a leading manufacturer of Calcium Dodecyl Stearate. This company has more than twelve years experience in the field of chemical products research, development, and manufacturing. If you’re looking for high-quality Calcium Dodecyl Stearate please contact us .

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