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Nano ceria impact resistant modified acrylate polymer and preparation method thereof

A technology of nano-cerium dioxide and high molecular polymer, which is applied in the field of PVC processing aids, can solve the problems of general fluidity and impact resistance of PVC profiles, rising cost of PVC products, general fluidity of particles, etc., and is easy to implement , low cost, simple and easy preparation method

Inactive Publication Date: 2013-03-13
SHANDONG SHITUO CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The PVC processing aids in the prior art generally use acrylate linear high molecular polymers, which are methyl methacrylate-butyl acrylate copolymers. The copolymer particles have general fluidity and high cost.
Generally, PVC resin is about 7,000~9,000 yuan / ton, and the price of methyl methacrylate-butyl acrylate copolymer is 20,000~25,000 yuan / ton. The price is relatively high, which increases the cost of PVC products produced. In addition, the fluidity and impact resistance of PVC profiles prepared by using this copolymer are average.

Method used

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  • Nano ceria impact resistant modified acrylate polymer and preparation method thereof
  • Nano ceria impact resistant modified acrylate polymer and preparation method thereof
  • Nano ceria impact resistant modified acrylate polymer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Raw materials: 1,500 kg of demineralized water, 1,000 kg of polymerized monomer composition uniformly mixed with 600 kg of methyl methacrylate and 400 kg of butyl acrylate, 1 kg of sodium persulfate, 15 kg of sodium dodecyl sulfonate, nanometer two Cerium oxide (particle size: 20±5nm) 5 kg.

[0024] Preparation method: Add a set amount of demineralized water into the glass-lined reactor, start stirring at a stirring speed of 75 rpm, add emulsifier and 480 kg of polymerized monomer composition, close the reactor, and turn on the heating. When the temperature reaches 65°C, an initiator is added for a period of reaction. When the temperature in the reactor rises, the polymerization reaction in the reactor starts, and at this time, the cooling water is turned on to cool down. When the temperature rises to about 78°C, stops rising, and begins to drop to 70°C, add nano ceria and 520 kg of the second-stage monomer composition into the kettle to carry out the second-stage reac...

Embodiment 2

[0026] Raw materials: 1500 kg of demineralized water, 600 kg of methyl methacrylate, 400 kg of butyl acrylate, 0.5 kg of ammonium persulfate, 15 kg of sodium lauryl sulfate, 10 kg of nano cerium dioxide (particle size: 30±5nm) .

[0027] Preparation method: Add a set amount of demineralized water into the glass-lined reactor, start stirring at a stirring speed of 60 rpm, add an emulsifier and 700 kg of polymerized monomer composition, close the reactor, and turn on the heating. When the temperature reaches 66°C, an initiator is added for a period of reaction. When the temperature in the reactor rises, the polymerization reaction in the reactor starts, and at this time, the cooling water is turned on to cool down. When the temperature rises to about 77°C, no longer rises, and starts to drop to 70°C, add nano ceria and 300 kg of the second-stage monomer composition to the kettle to carry out the second-stage reaction, and the temperature in the reaction is controlled at 80°C t...

Embodiment 3

[0029] Raw materials: 1600 kg of demineralized water, 600 kg of methyl methacrylate, 400 kg of butyl acrylate, 5 kg of sodium persulfate, 15 kg of sodium dodecylbenzenesulfonate, nano-cerium dioxide (particle size: 50±5nm) 20 kg.

[0030] Preparation method: Add a set amount of demineralized water into the glass-lined reactor, start stirring, and the stirring speed is 68 rpm, add emulsifier, 300 kg of polymerized monomer composition, close the reactor, turn on the heating, when the reactor is When the temperature reaches 68°C, an initiator is added for a period of reaction. When the temperature in the reactor rises, the polymerization reaction in the reactor starts, and at this time, the cooling water is turned on to cool down. When the temperature rises to about 78°C, stops rising, and starts to drop to 70°C, add nano ceria and 700 kg of the second-stage monomer composition into the kettle to carry out the second-stage reaction, and the temperature in the reaction is control...

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Abstract

The invention relates to a nano ceria impact resistant modified acrylate polymer and a preparation method thereof, belonging to the technical field of PVC (polyvinyl chloride) processing aids. The polymer is characterized in that nano ceria is added to prepare the polymer in the process of polymerizing polymer monomers, wherein the polymer monomers are methyl methacrylate and butyl acrylate. The preparation method comprises the following steps of: adding water to a reaction kettle, starting stirring, adding an emulsifier and the polymer monomers, heating the materials and adding an initiator for reaction when the temperature reaches 65-68 DEG C; opening cooling water for cooling when the temperature in the reaction kettle begins rising and adding the nano ceria when the temperature begins falling after rising to the summit; and closing the cooling water when the temperature falls to 60-65 DEG C and carrying out emptying and drying when the temperature naturally falls to 45-48 DEG C, thus obtaining the powdery product. The polymer and the preparation method have the advantages that the acrylate polymer has low cost and good fluidity in the particle state; the PVC profiles prepared from the polymer have high impact resistance; and the preparation method is simple and practicable and is easy to implement.

Description

technical field [0001] The invention relates to a nano ceria impact-modified acrylate polymer and a preparation method thereof, belonging to the technical field of PVC processing aids. Background technique [0002] The PVC processing aids in the prior art generally use acrylic ester linear polymers, which are methyl methacrylate-butyl acrylate copolymers, which have general fluidity and high cost in particle state. Generally, PVC resin is about 7,000~9,000 yuan / ton, and the price of methyl methacrylate-butyl acrylate copolymer is 20,000~25,000 yuan / ton. The price is relatively high, which increases the cost of PVC products produced. In addition, the fluidity and impact resistance of PVC profiles prepared by using this copolymer are average. Contents of the invention [0003] The purpose of the present invention is to provide a nano-cerium dioxide impact-modified acrylate polymer, which is used as a PVC auxiliary agent, has low cost, and has good particle state fluidity, a...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F2/44C08K3/22C08L27/06C08L33/12C08L33/08
Inventor 刘清祥徐茂增唐慎营
Owner SHANDONG SHITUO CHEM TECH CO LTD
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