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PVC stabilizing agent and preparation method thereof

A stabilizer and auxiliary stabilizer technology, which is applied in the field of polymer material ingredients, can solve the problems that the stabilization effect cannot be fully exerted, the environmental protection problem cannot be fundamentally solved, and the surface energy is large, so as to avoid macromolecule breakage , Improve plasticizing property and good compatibility

Inactive Publication Date: 2010-06-02
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lead and organotin composite rare earth stabilizers have better effects, they are highly toxic and cannot fundamentally solve environmental problems; rare earth-zinc composite thermal stabilizers are safe and non-toxic stabilizers, but their surface energy is large, Poor dispersion and poor fluidity after mixing with PVC, so that the stabilization effect cannot be fully exerted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Weigh 2 mol of benzoic acid and 2 mol of rare earth lanthanum compound into the reaction kettle, adjust the pH value to 11 with sodium hydroxide, add 0.12 mol of acetic acid, react at 80°C for 2 hours, filter, wash, and dry to obtain organic weak acid rare earth salt.

[0037] In another reactor, 50 g of maleic anhydride was dissolved in 500 g of water, and 2000 g of zeolite was weighed into the reactor, stirred at room temperature for 5 hours, filtered, and air-dried at room temperature to obtain a zeolite reactor.

[0038] Weigh 1 kg organic weak acid rare earth salt, 800 g zeolite reactor, 200 g antioxidant 168, 1 kg calcium zinc stabilizer, and 1 kg zinc benzoate and mix them uniformly in a conical mixer to obtain a PVC stabilizer.

example 2

[0040] Weigh the mixture of 3mol oleic acid and 6mol rare earth lanthanum and cerium compound into the reaction kettle, adjust the pH value to 12 with sodium hydroxide, add 0.28molH 2 o 2 , react at 85°C for 3 hours, filter, wash, and dry to obtain organic weak acid rare earth salt.

[0041] In another reactor, 50 g of maleic anhydride was dissolved in 500 g of water, and 4000 g of zeolite was weighed into the reactor, stirred at room temperature for 5 hours, filtered, and air-dried at room temperature to obtain a zeolite reactor.

[0042] Weigh 1950g organic weak acid rare earth salt, 900g zeolite reactor, 150g β-diketone, 1kg calcium stearate, 1kg amino acid zinc and mix them uniformly in a conical mixer to obtain a PVC stabilizer.

example 3

[0044] Weigh 1mol of stearic acid and 3mol of rare earth cerium compound into the reaction kettle, adjust the pH value to 10 with sodium hydroxide, add 0.15molH 2 o 2 , react at 90°C for 2 hours, filter, wash, and dry to obtain organic weak acid rare earth salt.

[0045]In another reactor, 50 g of maleic anhydride was dissolved in 500 g of water, and 1000 g of zeolite was weighed into the reactor, stirred at room temperature for 5 hours, filtered, and air-dried at room temperature to obtain a zeolite reactor.

[0046] Weigh 600g organic weak acid rare earth salt, 350g zeolite reactor, 50g epoxidized soybean oil, and 600g lead salt stabilizer and mix them uniformly in a conical mixer to obtain a PVC stabilizer.

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PUM

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Abstract

The invention discloses a PVC stabilizing agent, which comprises 50 to 75 weight parts of organic weak-acidic rare-earth salt and 25 to 50 weight parts of zeolite reactor. The organic weak-acidic rare-earth salt is prepared by reacting 1 mole part of organic weak acid with 1 to 5 mole parts of natural rare-earth compound under an alkaline conduction, wherein the organic weak acid is one or more than two of phenylformic acid, oleic acid, stearic acid and stearic acid; and the rare-earth compound is one or more than two of the natural compounds of lanthanum, cerium, neodymium and europium. The zeolite reactor is that zeolites absorbing maleic anhydrides are arranged in a channel and a cage. The PVC stabilizing agent of the invention has the advantages of small dosage, self-lubrication, yellowing resistance, no pock and the like; and the PVC material prepared by the stabilizing agent of the invention has good thermal stability and plasticity.

Description

technical field [0001] The invention relates to batching of polymer materials, in particular to a stabilizer used in PVC material processing, and also to a preparation method of the stabilizer. Background technique [0002] Polyvinyl chloride (PVC) materials are widely used in chemical building materials and household plastic products because of their advantages of wear resistance, good ductility, moisture resistance and low price. However, PVC materials are easily detached from HCl when heated to form conjugated polyolefins. , resulting in discoloration of PVC. In order to inhibit the degradation of PVC during processing and make PVC smoothly processed into products, heat stabilizers are usually added. In the past, metals and metal compounds were usually used as the main stabilizers. Among them, lead salts and organotin stabilizers are the most widely used and have the best effect. However, lead salts and organotin are highly toxic and cannot meet the requirements of envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/02C08K5/098C08K5/17C08K5/09C08K3/34C08K5/07C08K5/103
Inventor 许家友班华真
Owner GUANGZHOU UNIVERSITY
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