Ternary hydrotalcite-rare earth-calcium/zinc nontoxic composite heat stabilizer and preparation thereof

A composite heat stabilizer and hydrotalcite technology, which is applied in the field of plastic processing aids to achieve the effects of no vulcanization pollution, smooth appearance, and improved thermal stability

Inactive Publication Date: 2009-08-19
江西宏远化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The ternary hydrotalcite-rare earth-calcium-zinc non-toxic composite heat stabilizer of the present invention is composed of ternary hydrotalcite, organic rare earth compounds, calcium compounds, zinc compounds, etc. Components such as hydrotalcite, organic rare earth compounds, antioxidants, lubricants and other auxiliary substances overcome the shortcomings of a single stabilizer, and make full use of the synergistic effect between multiple components for chemical synthesis and optimal compounding , to improve the thermal stability of PVC products

Method used

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  • Ternary hydrotalcite-rare earth-calcium/zinc nontoxic composite heat stabilizer and preparation thereof

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Effect test

Embodiment 1

[0037] Weigh 38g MgCl respectively 2 (0.4mol), 13.36g (0.1mol) AlCl 3 and 17.74 g of ReCl 3 , after mixing, add deionized water to 500ml to prepare Mg 2+ / Al 3+ Mixed salt solution with a molar ratio of 3; weigh 42.4g Na 2 CO 3Add (0.4mol) 38.4gNaOH (0.96mol) to 500ml of deionized water, prepare a mixed lye and add it to the reaction kettle, add the prepared magnesium aluminum rare earth salt solution and stir quickly, control the temperature between 90°C and 100°C, and strongly Stir to keep the pH value at 9-11, continue to stir for 30 minutes after the addition is complete, then add stearic acid with a mass fraction of 3%, continue to stir and react for 1 hour, crystallize at 50°C for 8-12 hours, and dry to obtain Intercalation modified rare earth magnesium aluminum ternary hydrotalcite.

[0038] 25.6g of ternary hydrotalcite prepared by the above process, 10.2g of rare earth stearate, 16g of zinc acrylate, 20.2g of calcium stearate, 15g of lubricant, 4g of antioxidant...

Embodiment 2

[0040] Weigh 38g MgCl respectively 2 (0.4mol), 13.36g (0.1mol) AlCl 3 and 57.4 g of ZnSO 4 ·7H 2 O, add deionized water to 500ml after mixing to prepare Mg 2+ / Al 3+ Mixed salt solution with a molar ratio of 3; weigh 42.4g Na 2 CO 3 Add (0.4mol) 38.4gNaOH (0.96mol) to 500ml with deionized water, prepare mixed lye and add it to the reaction kettle, add the prepared magnesium-aluminum-zinc salt solution and stir quickly, control the temperature between 90°C and 100°C, and strongly Stir to keep the pH value at 9-11, continue to stir for 30 minutes after the addition is complete, then add stearic acid with a mass fraction of 4%, continue to stir and react for 1 hour, crystallize at 60°C for 8-12 hours, and dry to obtain Intercalation-modified magnesium-aluminum-zinc ternary hydrotalcite.

[0041] 24.6g of ternary hydrotalcite prepared by the above process, 8.1g of rare earth citrate, 26g of zinc stearate, 27.8g of calcium stearate, 90g of lubricant, 2.5g of antioxidant, and...

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Abstract

The invention relates to a preparation method of compound thermal stabilizer in plastic processing additive and pertains to the technical field of plastic processing additive. The invention discloses a ternary hydrotalcite-rare earth-Ca/Zn innoxious compound thermal stabilizer and a preparation method thereof. The invention comprises the materials of the stabilizer such as ternary hydrotalcite, organic rare earth compound, Ca compound and Zn compound, a synthetic preparation method thereof and an optimal compounding method of ternary hydrotalcite-rare earth-Ca/Zn innoxious compound thermal stabilizer. The ternary hydrotalcite-rare earth-Ca/Zn innoxious compound thermal stabilizer provided by the invention serves as a new generation high-efficiency innoxious stabilizer, can replace the traditional lead salt and expensive organic stannum thermal stabilizer and can be widely applied to the fields of PVC pipe material, section material, wire and cable, medical instrument and membrane, etc.

Description

technical field [0001] The invention relates to a preparation method of a composite heat stabilizer in plastic processing aids, and belongs to the technical field of plastic processing aids. Background technique [0002] Known polyvinyl chloride heat stabilizers can be divided into lead salts, metal soaps, organotins, composite stabilizers and other auxiliary heat stabilizers, etc., but the most widely used heat stabilizers are still lead salts and metal soaps. my country's heat stabilizers are mainly lead salts and metal soaps. Lead salt has good heat stabilization effect, good electrical insulation and weather resistance, but its biggest disadvantage is that it contains heavy metal lead. [0003] Since July 1, 2006, EU countries banned the use of six harmful substances containing lead, mercury, cadmium, hexavalent chromium, polybrominated diphenyl ethers (PBDE), and polybrominated biphenyls (PBBs) in electrical and electronic equipment. The UK also has regulations restric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/34C08K5/098C08L27/06
Inventor 吴旅良
Owner 江西宏远化工有限公司
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