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Organic rare-earth complex copolymer used for UPVC hot working and preparation method thereof

A technology of rare earth complexes and copolymers, which is applied in the field of organic polymer functional materials, can solve the problems of reducing material strength, toxicity diffusion, and low safety, and achieve the effect of improving plasticization and promoting gelation

Inactive Publication Date: 2012-01-11
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, low-molecular-weight organic compounds cause toxic diffusion due to volatilization and migration, and their safety is low. Because they are low-molecular components, the quality of materials will also be reduced; inorganic powders are generally lead salts or other heavy metal compounds, which have toxicity and safety issues. reduce material strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]1. Preparation process: In a 1000 ml flask with stirring, add 30 grams of acrylic acid, and slowly add 400 grams of 10% sodium hydroxide solution while stirring to make it dissolve. Prepare 250 grams of 20% rare earth chloride aqueous solution in a 1000 ml three-necked bottle, add the prepared acrylic acid dissolved in sodium hydroxide dropwise into the rare earth chloride aqueous solution, and stir the reaction at the same time until complete precipitation and crystallization, wash and filter to obtain wet Base paste acrylic rare earth. Add 100 grams of deionized water to a 1-liter container with a high-speed disperser and a step-by-step stirring device, add 1 gram of polyoxyethylene alkyl ether as a dispersant, and carry out resistance stirring until completely dispersed. Add the above-prepared wet base acrylic acid rare earth complex into the container, and after 15 minutes of high-speed dispersion, move the aqueous dispersion into a sand mill and grind it for 30 minu...

Embodiment 2

[0039] Implementation steps are the same as in Example 1, consumption: methyl methacrylate, 80 grams, ethyl acrylate 40 grams, styrene 80 grams. Acrylic acid rare earth complex preparation amount, and dispersant, emulsifier, initiator, usage amount and use are equal to embodiment 1.

Embodiment 3

[0041] Implementation steps are the same as in Example 1, consumption: methyl methacrylate, 80 grams, 20 grams of ethyl acrylate, styrene 80 grams, acrylonitrile, 20 grams. Acrylic acid rare earth complex preparation amount, and dispersant, emulsifier, Initiator, usage amount and use are equal to embodiment 1.

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PUM

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Abstract

The invention relates to an organic rare-earth complex copolymer used for UPVC hot working and a preparation method thereof. An organic acrylic acid rare-earth complex and acrylate copolymers are subjected to grafted copolymerization to prepare the organic rare-earth complex copolymer with thermal stability for UPVC hot working and the function of promoting gelation and plastication. The organic rare-earth complex is used as a thermal stabilizer for UPVC and also used as a processing and modifying aid. The preparation method comprises the following steps of: preparing the acrylic acid rare-earth complex, and adding an emulsifying agent, an initiator and a dispersing agent into a reactor with a stirrer and a temperature control device to obtain copolymerized emulsion; and separating and drying to prepare the organic rare-earth complex copolymer. A chemical bonding method is used, and a rare earth component is introduced into the acrylate copolymers, so the plastication effect is improved, the thermal stability in the polymer is improved, the hot working process of the UPVC is optimized, and the material performance is improved.

Description

technical field [0001] The invention belongs to the technical field of organic macromolecule functional materials, and relates to an organic rare-earth complex copolymer having thermal stabilization effect on UPVC processing and gelling plasticization modification effect and a preparation method thereof. Background technique [0002] UPVC is one of the most widely used general-purpose plastics, and UPVC plastics have become the main development direction of UPVC plastics. However, there are two obvious defects in the processing of UPVC materials. One is that the thermal stability is relatively poor, and thermal stability additives are a necessary addition to UPVC; the other is due to the incomplete melting state and melt viscosity of the primary resin particles. Plasticization is difficult due to factors such as large size and poor heat transfer. For this reason, it is necessary to add a plasticizing modifier, usually called a processing modifier. The heat stabilization add...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L51/00C08L51/06C08F265/04C08F257/02
Inventor 李良波孟平蕊杜辛颖张智理刘勇旭
Owner UNIV OF JINAN