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Method for preparing hydrocalumite based heat stabilizer from calcium-aluminum hydroxide and application of hydrocalumite based heat stabilizer

A technology of hydrocalumite and heat stabilizer, which is applied in the field of polyvinyl chloride preparation, can solve the problems of high price and achieve the effects of cheap price, reduced energy consumption and improved conversion rate

Active Publication Date: 2016-07-27
宁波慧硕新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both of the above two heat stabilizers contain heavy metal ions such as lead, cadmium, and barium, which deviate from the current global green environmental protection theme.
Organotin has good compatibility with PVC, but it is expensive

Method used

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  • Method for preparing hydrocalumite based heat stabilizer from calcium-aluminum hydroxide and application of hydrocalumite based heat stabilizer
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  • Method for preparing hydrocalumite based heat stabilizer from calcium-aluminum hydroxide and application of hydrocalumite based heat stabilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a 250mL single-necked flask, add 3.6223g of calcium hydroxide, 1.9212g of aluminum hydroxide, and 50.02mL of deionized water. At room temperature, the rotor was stirred at a speed of 800r / min for 30min. Add 1.3088g of anhydrous sodium carbonate to the one-necked flask, and continue to stir at room temperature for 30min. Then move the single-necked flask to an oil bath at 60°C, stir and reflux with the rotor, and react for 20 hours. After the reaction is completed, filter it with 0.08MPa suction, wash with deionized water three times, dry at 80°C for 6 hours, and grind to obtain the product Calcium Hydroxide Stone based heat stabilizer.

[0024] Hydrocalumite based heat stabilizer Ca 4 Al 2 (OH) 12 CO 3 5H 2 O infrared spectrum. Such as figure 1 shown.

[0025] 3540cm -1 is OH - The characteristic absorption peak of the functional group indicates that there are hydroxyl radicals generated in the product. 1430cm -1 CO 3 - The characteristic absorption pe...

Embodiment 2

[0029] In a 250mL single-necked flask, add 3.6213g of calcium hydroxide, 1.9220g of aluminum hydroxide, and 75.06mL of deionized water. At room temperature, the rotor was stirred rapidly at 1000r / min for 30min. Add 1.3052 g of anhydrous sodium carbonate to the one-necked flask, and continue stirring at room temperature for 30 min. Then move the one-necked flask to an oil bath at 60°C, stir and reflux with the rotor, and react for 20 hours. After the reaction, filter with 0.1MPa suction, wash with deionized water three times, dry at 80°C for 6 hours, and grind to obtain hydrocalumite base heat stabilizer.

Embodiment 3

[0031] In a 250mL single-necked flask, add 3.6206g of calcium hydroxide, 1.9206g of aluminum hydroxide, and 100.05mL of deionized water. At room temperature, the 900r / min rotor stirred rapidly for 30min. Add 1.3010 g of anhydrous sodium carbonate to the one-necked flask, and continue stirring at room temperature for 30 min. Then move the single-necked flask to an oil bath at 60°C, stir and reflux with the rotor, and react for 20 hours. After the reaction is completed, filter it with suction and wash it with deionized water three times, dry it at 80°C for 6 hours, and grind it to obtain hydrocalumite-based heat stabilizer.

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Abstract

The invention provides a method for preparing a hydrocalumite based heat stabilizer from calcium-aluminum hydroxide and an application of the hydrocalumite based heat stabilizer and belongs to the technical field of preparation of polyvinyl chloride. According to the method, the hydrocalumite based heat stabilizer is prepared from the calcium-aluminum hydroxide and anhydrous sodium carbonate serving as raw materials with deionized water as a solvent. The method specifically comprises steps as follows: calcium hydroxide and aluminum hydroxide are dissolved in deionized water and quickly stirred at the room temperature, anhydrous sodium carbonate is added to reactants, the mixture is quickly stirred continuously, a reaction system is transferred to an oil-bath pan for heating and refluxing, and the product hydrocalumite based heat stabilizer is obtained after post-treatment. The prepared novel hydrocalumite can effectively serve as a novel environment-friendly and non-poisonous PVC (polyvinyl chloride) heat stabilizer, raw materials are easy to obtain, the price is low, the hydrocalumite based heat stabilizer is synthesized directly in simple steps, and the target product meets requirements of green chemistry and is environment-friendly.

Description

technical field [0001] The invention relates to a method for preparing a hydrocalumite-based heat stabilizer from calcium aluminum hydroxide and an application thereof, belonging to the technical field of polyvinyl chloride preparation. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics in the world. It has the advantages of high strength, good wear resistance, high dielectric and low price. However, polyvinyl chloride has the disadvantage of poor light and heat stability, which leads to the deterioration of its many properties, such as the deterioration of mechanical properties and the discoloration of the appearance of products. This shortcoming of PVC can be solved by adding heat stabilizers. In my country, heat stabilizers commonly used for PVC include lead salts, metal soaps, organotins, composite heat stabilizers and other additives. Lead salt heat stabilizers have good thermal stability, good electrical insulation and ...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/02C08K3/22C08K3/26C08K5/098C08K5/3462
CPCC08K3/22C08K3/26C08K5/098C08K5/3462C08K13/02C08K2003/2206C08K2003/2227C08K2003/265C08L2201/08C08L27/06
Inventor 蒋平平张凯刘洪亮黄元旦
Owner 宁波慧硕新材料有限公司
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