A liquid calcium/zinc heat stabilizer, its preparation method and equipment for implementing the method

Abstract

The invention discloses a liquid calcium / zinc heat stabilizer. The liquid calcium / zinc heat stabilizer comprises the following preparation raw materials in parts by weight: 10-15 parts of calcium oxide and / or calcium hydroxide, zinc oxide and / or hydrogen 10-20 parts of zinc oxide, 30-40 parts of acid solution, 1-2 parts of water-carrying agent, 10-20 parts of saturated naphthenic solvent and 10-20 parts of heat-resistant additive. The invention also discloses a preparation method of the liquid calcium / zinc heat stabilizer and equipment for implementing the method. The performance of the liquid calcium / zinc heat stabilizer product of the present invention is stable, no flocs will be precipitated during placement, the product has no pungent smell, and will not cause harm to the body of the operator; the liquid calcium / zinc heat stabilizer of the present invention is stable The preparation method of the agent adopts a one-step method, which simplifies the production process, reduces unsafe factors in the production process, and improves production efficiency and output rate.

Description

technical field [0001] The invention belongs to the field of liquid stabilizers, and in particular relates to a liquid calcium / zinc heat stabilizer, a preparation method thereof and equipment for implementing the method. Background technique [0002] With the improvement of living standards, the requirements for environmental protection of industrial and household PVC products are increasing day by day. In the early 1990s, the compound lead salt stabilizer and cadmium barium zinc stabilizer were widely used. Among them, the heat stabilizers of lead salt and barium cadmium soap are cheap and have excellent performance. In developed countries, their output accounts for about 60% to 70% of the total heat stabilizers; in my country, the proportion is even larger, accounting for about 80% to 90%. %. For a long time, lead and cadmium stabilizers have dominated the consumer market of PVC heat stabilizers in the world. However, due to the high toxicity of lead salts and barium cadm...

AI Technical Summary

Problems solved by technology

Its disadvantages are: 1. The production steps are cumbersome and the process is complex, including feeding, salt formation, dehydration, compounding, pressure filtration, and finished product packaging processes. Each process is completed in different equipment, and semi-finished products need to be manually transferred. It is very troublesome; 2. Production The time period is long and the energy consumption is high, especially the dehydration, and the two production processes of the filter press consume a lot of energy; 3. A large amount of acid mist is formed during high-temperature production, and the production of the equipment is not closed, which is harmful to the operators; 4. New process production The resulting product has stable performance, and its anti-separation and heat resistance are significantly better than the previous process

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