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Application of high performance Ca/Zn heat stabilizer on the rigid PVC

Zhang Wen-gong

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Abstract

The heat stability and weather resistance of the synthetic Ca-Zn composite heat stabilizer in the rigid PVC were tested by Congo red method, heat method and accelerated aging method. The effect of mass ratio of calcium soap to zinc soap in the Ca-Zn heat stabilizer on heat stability was studied and its properties were compared with some heat stabilizers from abroad. Results show that the proper mass ratio of calcium soap to zinc soap is 6∶4 and Congo red stable time of Ca-Zn composite heat stabilizer in the rigid PVC at 195℃ is 27min. The tensile strength and elongation at break keep still 85.7 and 75 percentage after 400hours accelerated aging respectively. The stability of the synthetic Ca-Zn composite heat stabilizer in the rigid PVC is better.

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What this paper is about

The heat stability and weather resistance of the synthetic Ca-Zn composite heat stabilizer in the rigid PVC were tested by Congo red method, heat method and accelerated aging method. The effect of mass ratio of calcium soap to zinc soap in the Ca-Zn heat stabilizer on heat stability was studied and its properties were compared with some heat stabilizers from abroad. Results show that the proper mass ratio of calcium soap to zinc soap is 6∶4 and Congo red stable time of Ca-Zn composite heat stabilizer in the rigid PVC at 195℃ is 27min. The tensile strength and elongation at break keep still 85.7 and 75 percentage after 400hours accelerated aging respectively. The stability of the synthetic Ca-Zn composite heat stabilizer in the rigid PVC is better.

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Available abstract

The heat stability and weather resistance of the synthetic Ca-Zn composite heat stabilizer in the rigid PVC were tested by Congo red method, heat method and accelerated aging method. The effect of mass ratio of calcium soap to zinc soap in the Ca-Zn heat stabilizer on heat stability was studied and its properties were compared with some heat stabilizers from abroad. Results show that the proper mass ratio of calcium soap to zinc soap is 6∶4 and Congo red stable time of Ca-Zn composite heat stabilizer in the rigid PVC at 195℃ is 27min. The tensile strength and elongation at break keep still 85.7 and 75 percentage after 400hours accelerated aging respectively. The stability of the synthetic Ca-Zn composite heat stabilizer in the rigid PVC is better.

Key concepts: Stabilizer (aeronautics), Heat stability, Elongation, Composite number, Ultimate tensile strength, Zinc, Materials science, Calcium

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