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Preparation method of safe and environmentally-friendly macromolecular plasticizer

A macromolecular plasticizer, safe and environmentally friendly technology, applied in the field of polymer materials, can solve the problems of easy brittleness, unsafe plasticizer, toxicity, etc., and achieve the effect of avoiding precipitation

Inactive Publication Date: 2018-04-13
浙江华慧塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nowadays, PVC plastic is one of the four general-purpose materials. However, due to its own molecular structure characteristics, its processing temperature is higher. On the other hand, although PVC products have higher rigidity, their flexibility is relatively poor, so It is easy to become brittle during use, so in the processing, it is necessary to add a certain amount of plasticizer to improve its plasticizing temperature and flexibility
However, when people use plasticizers, most of them use small molecular substances such as DOP for plasticization. In the process of using such small molecular substances, we directly add them to PVC products for preparation. products, but PVC is a macromolecular substance, while DOP plasticizers are only small molecular substances. During the use of the product, these small molecular substances will be precipitated, thereby reducing the mechanical properties of PVC products and shortening the service life. , on the other hand, the precipitated small molecules have certain toxicity, which will affect the environment and our health, so it can be said that this type of plasticizer is neither safe nor protective

Method used

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  • Preparation method of safe and environmentally-friendly macromolecular plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of a safe and environment-friendly macromolecular plasticizer comprises the following steps:

[0022] (1) Control the temperature of the reactor at 20-30°C, control the speed of mechanical stirring at 200-300rpm, and mix water and vinyl acetate with a mass ratio of 200:100:200:300:5:1:2:1:0.5 , styrene, butyl methacrylate, emulsifier, uniformly dispersed nonionic surfactant, highly reactive anionic surfactant, oxidant, buffer solution, add to the reaction kettle and stir for 20 minutes. Then increase the mechanical stirring speed to 500rpm, stir for 5 minutes, and pour it into a reagent bottle for later use. This liquid is the pre-emulsifier.

[0023] (2) Control the temperature of the reaction kettle at 60-70°C, control the speed of the mechanical stirrer at 200-300rpm, mix 70 parts by mass of the pre-emulsifier in (1), and 3 parts of the uniformly dispersed non-ionic surface Active agent, 2 parts of anionic surfactant with high reactivity, put in...

Embodiment 2

[0025] A preparation method of a safe and environment-friendly macromolecular plasticizer comprises the following steps:

[0026] (1) Control the temperature of the reactor at 20-30°C, control the speed of mechanical stirring at 200-300rpm, and mix water and vinyl acetate with a mass ratio of 250:100:200:350::5:1:2:1:0.5 Add ester, styrene, butyl methacrylate, emulsifier, uniformly dispersed nonionic surfactant, highly reactive anionic surfactant, oxidant, buffer solution, into the reaction kettle and stir for 20 minutes. Then increase the mechanical stirring speed to 500rpm, stir for 5 minutes, and pour it into a reagent bottle for later use. This liquid is the pre-emulsifier.

[0027] (2) Control the temperature of the reaction kettle at 60-70°C, control the speed of the mechanical agitator at 200-300rpm, mix 50 parts by mass of the pre-emulsifier in (1), and 2 parts of the uniformly dispersed non-ionic surface Active agent, 3 parts of anionic surfactant with high reactivit...

Embodiment 3

[0029] A preparation method of a safe and environment-friendly macromolecular plasticizer comprises the following steps:

[0030] (1) The temperature of the reactor is controlled at 20-30°C, the mechanical stirring speed is controlled at 200-300rpm, and the mass ratio of water and vinyl acetate is 250:150:250:400:10:1:2:2:1 , styrene, butyl methacrylate, emulsifier, uniformly dispersed nonionic surfactant, highly reactive anionic surfactant, oxidant, buffer solution, add to the reaction kettle and stir for 20 minutes. Then increase the mechanical stirring speed to 500rpm, stir for 5 minutes, and pour it into a reagent bottle for later use. This liquid is the pre-emulsifier.

[0031](2) Control the temperature of the reactor at 60-70°C, control the speed of the mechanical stirrer at 200-300rpm, and mix 100 parts by mass of pre-emulsifier and 5 parts of uniformly dispersed nonionic surface Active agent, 1 part of anionic surfactant with high reactivity, put into the reaction ke...

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PUM

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Abstract

The invention provides a preparation method of a safe and environmentally-friendly macromolecular plasticizer. According to the method, a reaction is performed by taking water as a solvent and utilizing an emulsion polymerization method; monomers, such as butyl methacrylate, styrene and vinyl acetate, are polymerized through a continuous alternate self-assembling mode to form a core-shell type plasticizer. The plasticizer prepared with the method can completely replace DOP micromolecular plasticizers which are used nowadays; precipitation of micromolecular raw materials is avoided, so that a product meets the requirements on safety and environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method of a safe and environment-friendly macromolecular plasticizer. Background technique [0002] Nowadays, PVC plastic is one of the four general-purpose materials. However, due to its own molecular structure characteristics, its processing temperature is higher. On the other hand, although PVC products have higher rigidity, their flexibility is relatively poor, so It is prone to brittleness and other problems during use, so a certain amount of plasticizer needs to be added during processing to improve its plasticizing temperature and flexibility. However, when people use plasticizers, most of them use small molecular substances such as DOP for plasticization. In the process of using such small molecular substances, we directly add them to PVC products for preparation. products, but PVC is a macromolecular substance, while DOP plasticizers are only sma...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F212/08C08F218/08C08F2/30C08F2/26C08F4/40C08L27/06C08L33/10
CPCC08F2/26C08F2/30C08F4/40C08F220/18C08F220/1804C08L27/06C08L33/10C08F212/08C08F218/08
Inventor 杨晓鹏张建银
Owner 浙江华慧塑业有限公司