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PVC stabilizer and preparation method thereof

A stabilizer and mixture technology, applied in the chemical field, can solve the problems of fast consumption and poor thermal stability, and achieve the effects of no dust pollution, easy access to raw materials, and simple and easy-to-operate preparation methods

Inactive Publication Date: 2011-11-02
大连星海纳米技术开发应用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) Cadmium and zinc soap are typical initial heat stabilizers, which can quickly absorb HCl, and effectively replace the unstable chlorine atoms on the PVC chain with carboxylate groups under the catalysis of Cd and Zn, thereby effectively inhibiting initial degradation and coloring , but the product CdCl is converted due to its fast consumption 2 , ZnCl 2 , is also an efficient catalyst for PVC to remove HCl, which will cause the malignant degradation of PVC and make the material suddenly black, so the long-term thermal stability is poor

Method used

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  • PVC stabilizer and preparation method thereof
  • PVC stabilizer and preparation method thereof
  • PVC stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] 45Kg1250 purpose sepiolite, add the calcium stearate of 25Kg, the zinc stearate of 20Kg, the rare earth stearate of 2Kg, the nano metal zinc of 0.2Kg, the epoxy soybean oil of 4Kg, the polyhydric alcohol (diethyl ether) of 3.8Kg Glycol, triethylene glycol, polyethylene glycol, molecular weight is three kinds of mixtures of 2000), forms stabilizer product 100Kg.

[0026] According to the ratio of stabilizer: PVC resin: calcium carbonate=3: 12: 5, after 15kg of the stabilizer prepared above, 60kg of PVC resin and 25kg of calcium carbonate are routinely mixed uniformly, on a conventional PVC profile machine, extrude qualified PVC profiles, profiles The drop weight impact test and surface finish are higher than similar products. Table 1 shows the experimental results and data on the stability of the PVC resin added with the stabilizer prepared above and a commercially available stabilizer. The experimental temperature is 180° C., and the experimental standard adopts GB / T291...

example 2

[0030] 60Kg2000 mesh sepiolite, add 15Kg of calcium stearate, 15Kg of zinc stearate, 3Kg of rare earth stearate, 0.5Kg of nano metal zinc, 3Kg of epoxy soybean oil, 3.5Kg of organic acid (stearic acid) acid, oleic acid, palmitic acid) to form a stabilizer product 100Kg.

[0031] By stabilizer: PVC resin: the ratio of calcium carbonate=3: 12: 5, after 15kg above-mentioned prepared stabilizer, 60kgPVC resin and 25kg calcium carbonate are mixed uniformly, extrude PVC pipe on the conventional PVC pipe extruder, each All properties meet the requirements of GB / T10002.1-2006 "Rigid polyvinyl chloride (PVC-U) pipes for water supply". Table 2 shows the experimental results and data on the stability of the PVC resin added with the stabilizer prepared above and a commercially available stabilizer. The experimental temperature is 180° C., and the experimental standard adopts GB / T2917.1-2002.

[0032] Table 2 Stability test of traditional stabilizer and new stabilizer Congo red test

[0...

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Abstract

The invention belongs to the chemical field, in particular relating to a PVC stabilizer and a preparation method thereof. The stabilizer comprises the following raw materials: fatty alcohol or organic acid, organic acid salt, epoxidized soybean oil, micro-nanometer metal and sea roam ore or inorganic nonmetal mineral powder. The prepared stabilizer can be powdery, granulous or flaky. The stabilizer of the invention is a novel compound stabilizer which features in high efficiency, low cost, no dust pollution and non-toxicity or low virulence, and has the efficacies of strong toughness, flamingresistance and high temperature resistance to resin treatment products besides possessing the stabilizing effect of the traditional stabilizer; the preparation method of the PVC stabilizer is simple and easily operated, and has easily obtained raw materials and wide application prospects.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a PVC stabilizer and a preparation method thereof. technical background [0002] The full name of polyvinylchlorid (Polyvinylchlorid, PVC) is Polyvinylchlorid. Its heat resistance, toughness, ductility, etc., so its products generally do not store food and medicine. It is a well-loved, popular and widely used synthetic material in the world today. Its global usage ranks second among all kinds of synthetic materials. Broadly speaking, all additives added for the purpose of improving the thermal stability of polymers can be called thermal stabilizers. An ideal heat stabilizer should have the functions of absorbing HCl, eliminating active sites, adding to conjugated polyene chains, destroying carbocation salts, and preventing auto-oxidation, without producing catalytic products for PVC degradation. Actual thermal stabilizers exhibit different thermal stability characteristics...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K13/02C08K3/34C08K5/098C08K3/08C08K5/1515C08K5/053C08K5/09C08L27/06
Inventor 孔庆和魏玉同丛培清
Owner 大连星海纳米技术开发应用有限公司