The difference between carbide method and ethylene method

The two methods of PVC production are calcium carbide method and ethylene method. What is the difference between them?


1. Different cost determining factors

The cost of PVC produced by calcium carbide method depends on the electricity price, and the higher the electricity cost, the higher the production cost.

The cost of PVC produced by ethylene method is directly linked to international crude oil prices, and fluctuations in oil prices will directly affect its price.


2. Significant differences in quality

PVC produced by the calcium carbide method has a moisture content 4-5 times higher than that produced by the ethylene method, and there are also 3 times more impurities,

This means that PVC produced by ethylene method has higher purity and more stable product quality.

Especially for high-end products, ethylene method is a better choice


3. Molecular weight distribution affects performance

The molecular weight distribution of PVC produced by calcium carbide method is wider

Resulting in higher thermal stability, mechanical properties, and weather resistance compared to ethylene method.

Vinyl PVC is more resistant to high temperature and aging, suitable for outdoor construction or harsh environment.


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Relate News

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Carbide is used in different industries and applications including: (1) Production of acetylene The reaction of calcium carbide with water, producing acetylene and calcium hydroxide.

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In the industries of metal processing, oil refining, and chemical manufacturing, achieving effective desulfurization is critical to product quality and environmental compliance. Calcium carbide, sourced from reputable calcium carbide suppliers like NEW OCEAN GROUP, offers a viable solution to combat sulfur emissions.

The global calcium carbide market is in a state of flux, with prices predicted to witness significant changes by 2025. Industry stakeholders face pain points such as volatile pricing and supply chain disruptions, which can impact budgeting and project timelines.

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