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Method for grafting propylene polymer with polar monomer

A technology of propylene polymer and polar monomer, applied in the field of propylene polymer grafting polar monomer, can solve the problems of many kinds of raw materials, limited polymer performance, complicated process, etc., so as to reduce costs and improve grafting. efficiency, the effect of simplifying the process

Inactive Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN101492517B has introduced a kind of grafting monomer that utilizes the porosity of polypropylene to absorb oil solubility, uses peroxide as initiator, reacts in water phase, obtains the graft product that grafting efficiency is higher, but does not involve polypropylene characteristics, its examples are limited to propylene homopolymers, the performance of the polymer is limited, and the grafting efficiency is low
[0005] CN1613887A proposes a method for suspending and swelling grafted polypropylene, but does not use porous polymer particles, and needs to add a variety of swelling agents and dispersants, with many types of raw materials and complicated processes

Method used

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  • Method for grafting propylene polymer with polar monomer
  • Method for grafting propylene polymer with polar monomer
  • Method for grafting propylene polymer with polar monomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A propylene / ethylene random copolymer is used as the polypropylene matrix, wherein the ethylene content is 2.2wt%, and the melt mass flow rate is 3.6g / 10min. After sieving, 300g of particles with a particle size between 1mm and 2mm are taken.

[0054] Put it into a 2L glass kettle with a condensing device with mechanical stirring, and vacuumize it to remove oxygen. Add an acetone solution containing 0.384 g of benzoyl peroxide, stir and mix for 15 minutes, and then vacuumize to remove the acetone. Add 15g of GMA and 100ml of deoxygenated deionized water, and stir for 30 minutes to make the GMA fully infiltrate the base material. Then add 100ml of deionized water, heat to 90°C, and react for 4 hours. After the reaction, the product was filtered out, cooled, washed with deionized water for 3 times, and then fluidized and dried.

[0055] Take 2g sample, dissolve it with 100ml xylene at 140°C for 1 hour, then pour it into 250ml acetone while it is still hot, and filter it...

Embodiment 2

[0057] The polypropylene matrix was changed to a propylene / ethylene random copolymer with an ethylene content of 2.5 wt%, and other conditions were the same as in Example 1. The experimental results of A1730 / A2722 before and after purification are listed in Table 1.

Embodiment 3

[0059] The polypropylene matrix was changed to a propylene / ethylene random copolymer with an ethylene content of 2.8 wt%, and other conditions were the same as in Example 1. The experimental results of A1730 / A2722 before and after purification are listed in Table 1.

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Abstract

The invention provides a method for grafting a propylene polymer with a polar monomer. The method comprises a, mixing a propylene polymer, an initiator and an organic solvent to obtain a mixture, b, removing the organic solvent in the mixture obtained by the step a and adding a polar monomer into the mixture for swelling, c, adding water into the swollen material obtained by the step b and heating the solution for a reaction, and d, washing and drying the reaction product obtained by the step c to obtain a propylene polymer grafted with the polar monomer. The method can utilizes an aqueous phase suspension grafting method for the propylene polymer, can observably improve polar monomer grafting efficiency and ratio and is conducive to wide application of the grafting-modified polypropylene.

Description

technical field [0001] The invention relates to a method for grafting and modifying polymers, in particular to a method for grafting propylene polymers with polar monomers. Background technique [0002] As a general-purpose plastic, polypropylene is widely used in many fields such as daily necessities, electrical accessories, and packaging. However, due to the lack of polar functional groups in polypropylene, it has the disadvantages of poor dyeability, adhesion, antistatic and hydrophilic properties, and poor compatibility with reinforcing materials and inorganic fillers. In order to expand the application range of polypropylene, it needs to be modified, such as grafting, blending, filling and composite reinforcement modification. [0003] Among them, graft modification has been widely used in the fields of polypropylene and nylon blend modification, glass fiber and inorganic particle filled polypropylene. The commonly used grafting methods mainly include solution graftin...

Claims

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Application Information

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IPC IPC(8): C08F255/04C08F255/02C08F220/32C08F2/18
Inventor 宋文波邵清毕福勇张京春张晓萌邹发生胡慧杰刘振杰
Owner CHINA PETROLEUM & CHEM CORP
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