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Rare earth composite heat stabilizing agent for PVC (polyvinyl chloride) and preparation method thereof

A heat stabilizer and rare earth composite technology, applied in the direction of organic chemistry, can solve the problem of low anti-coloring ability, and achieve the effect of good long-term thermal stability, small molecular weight, and good long-term thermal stability.

Active Publication Date: 2018-03-13
INNER MONGOLIA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a rare earth composite heat stabilizer for PVC and a preparation method thereof, so as to solve the problem of low initial anti-coloring ability of a single rare earth stabilizer, so that the heat stabilizer has thermal stability Strong, non-toxic, non-polluting, odorless, non-sulfur pollution, green and environmental protection, etc.

Method used

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  • Rare earth composite heat stabilizing agent for PVC (polyvinyl chloride) and preparation method thereof

Examples

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Embodiment 1

[0024] This embodiment provides a rare earth composite heat stabilizer, which is compounded from a main stabilizer and an auxiliary stabilizer;

[0025] The raw material components of the main stabilizer are calculated in parts by weight, including: 4 parts by weight of rare earth salt of isonicotinic acid;

[0026] The raw material components of the auxiliary stabilizer include, in parts by weight, 2 parts by weight of 1,4-butanediol (polyol) and 3 parts by weight of calcium stearate (stearate).

[0027] Wherein, the preparation method of the rare earth salt of isonicotinic acid comprises steps:

[0028] S1: Put 300g of isonicotinic acid in a beaker, add deionized water to make the concentration of isonicotinic acid 0.15g / mL, put the beaker in a water bath, stir and heat to 70°C, then stir at constant temperature for 45min to obtain isonicotinic acid Nicotinic acid aqueous solution;

[0029] S2: Add 0.50 L of cerium nitrate solution (rare earth salt solution) with a molar c...

Embodiment 2

[0034] This embodiment provides a rare earth composite heat stabilizer, which is compounded from a main stabilizer and an auxiliary stabilizer;

[0035] The raw material components of the main stabilizer are calculated in parts by weight, including: 1 part by weight of rare earth salt of isonicotinic acid;

[0036] The raw material components of the auxiliary stabilizer include, in parts by weight, 4 parts by weight of glycerol (polyol) and 1 part by weight of zinc stearate (stearate).

[0037] Wherein, the preparation method of the rare earth salt of isonicotinic acid comprises steps:

[0038] S1: Put 100g of isonicotinic acid in a beaker, add deionized water to make the concentration of isonicotinic acid 0.1g / mL, put the beaker in a water bath, stir and heat to 60°C, then stir at constant temperature for 40min to obtain isonicotinic acid Nicotinic acid aqueous solution;

[0039] S2: Add 0.18 L of yttrium chloride solution (rare earth salt solution) with a molar concentrati...

Embodiment 3

[0044] This embodiment provides a rare earth composite heat stabilizer, which is compounded from a main stabilizer and an auxiliary stabilizer;

[0045] The raw material components of the main stabilizer are calculated in parts by weight, including: 8 parts by weight of rare earth salt of isonicotinic acid;

[0046] The raw material components of the auxiliary stabilizer include, in parts by weight, 1 part by weight of pentaerythritol (polyol) and 4 parts by weight of calcium stearate (stearate).

[0047] Wherein, the preparation method of the rare earth salt of isonicotinic acid comprises steps:

[0048] S1: Put 500g of isonicotinic acid in a beaker, add deionized water to make the concentration of isonicotinic acid 0.2g / mL, put the beaker in a water bath, stir and heat to 80°C, then stir at constant temperature for 50min to obtain isonicotinic acid Nicotinic acid aqueous solution;

[0049] S2: Add 0.9 L of lanthanum sulfate solution (rare earth salt solution) with a molar ...

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Abstract

The invention relates to a rare earth composite heat stabilizing agent for PVC (polyvinyl chloride) and a preparation method thereof. The rare earth composite heat stabilizing agent is prepared from the following raw material ingredients including a main stabilizing agent and an auxiliary stabilizing agent, wherein the main stabilizing agent is prepared from the following raw material ingredientsin parts by weight: 1 to 8 weight parts of small-molecular-weight organic acid rare earth salt; the auxiliary stabilizing agent is prepared from the following raw material ingredients in parts by weight: 1 to 4 weight parts of polyhydric alcohols and 1 to 4 weight parts of stearate. The rare earth composite heat stabilizing agent for PVC provided by the invention solves the problem of low early stage coloring resistant capability of the single rare earth stabilizing agent; meanwhile, the performance of high thermal stability, nontoxicity, no pollution, no odor, no vulcanization pollution, green and environment-friendly effects and the like can be achieved; the modern PVC industry production requirements can be met.

Description

technical field [0001] The invention relates to the technical field of PVC heat stabilizers, in particular to a rare earth composite heat stabilizer for PVC and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose resins, and its annual sales volume in the world ranks second only to PE among thermoplastics. Because its products have the advantages of easy control of softness and hardness, high mechanical properties, corrosion resistance, good electrical insulation, high transparency, etc., and have conditions such as low price, abundant resources, and mature manufacturing processes, it is widely used in industrial and agricultural production fields. Has a very wide range of uses. However, polyvinyl chloride has poor stability to light and heat. It begins to decompose at around 170°C. When it is above 100°C or exposed to sunlight for a long time, it will decompose and produce hydrogen chloride, and the releas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/053C08K5/098C08K5/3432C07D213/803
CPCC07D213/803C08K5/053C08K5/098C08K5/3432C08L27/06
Inventor 柳召刚李梅胡艳宏董昕郝伟王觅堂张晓伟冯佳萌
Owner INNER MONGOLIA UNIV OF SCI & TECH
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