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Fusion graft process for modified polypropylene/acrylic acid polyester ether

A technology of polyether acrylate and melt grafting, which is applied in the field of polymer polymerization and processing, can solve the problems of continuous and uniform feeding, unstable grafting effect, etc., achieve quality improvement, avoid early decomposition, and ensure process stability Effect

Inactive Publication Date: 2007-03-14
江苏创源科技新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a method that can avoid the slipping phenomenon of the feed and improve the grafting efficiency in view of the defects that the current melt extrusion grafting process of polypropylene and polyether acrylate cannot realize continuous and uniform feeding and the grafting effect is unstable. Improved Efficiency of Polypropylene / Polyether Acrylate Melt Grafting Process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation process is as follows: 100 parts of polypropylene, 5.0 parts of acrylic acid polyether monoester, 5.0 parts of diacrylic acid polyether diester, 0.1 part of initiator 2,5-dimethyl-2,5 di-tert-butylperoxyhexane (TX101), 0.3 parts of antioxidant (1010) were added to the high-speed disperser and mixed evenly, then added to the hopper of the twin-screw extruder, and carried out the grafting reaction of melt extrusion by co-rotating twin-screw extruder (screw diameter 35) . The temperature of each section of the twin-screw extruder is:

[0022] Zone I Zone II Zone III Zone IV Zone V Zone VI Zone VII Zone VIII Zone

[0023] 100°C 180°C 180°C 185°C 190°C 220°C 220°C 220°C 220°C

[0024] The screw speed is 45r / min, and the residence time of the material in the twin-screw is 3min. The extrudate is cooled and pelletized to obtain the grafted product.

Embodiment 2

[0026] 1) At room temperature, uniformly mix acrylic acid polyether monoester and diacrylic acid polyether diester in a high-speed mixer at a weight ratio of 1:1, and then add the initiator 2,5-dimethyl-2,5 bis-tertiary Butylperoxyhexane (TX101) and antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester 1010, so that TX101 and antioxidant 1010 are mixed The weight concentration in the body is 1% and 3%.

[0027] 2), heat up the co-rotating twin-screw extruder (screw diameter 35), the temperature of each zone is as follows:

[0028] Zone I Zone II Zone III Zone IV Zone V Zone VI Zone VII Zone VIII Zone

[0029] 100°C 180°C 180°C 185°C 190°C 220°C 220°C 220°C 220°C

[0030] 3) Add polypropylene pellets to the twin-screw extruder through the feeding port for melt extrusion, and the feeding speed is controlled to be 10Kg / hour; at the same time, the mixed monomer solution is fed from the twin-screw extruder through a high-pressure metering p...

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Abstract

The improved polypropylene / acrylic polyether ester fusion grafting process includes the following steps: 1. mixing acrylic polyether ester monomer, peroxide initiator and antioxidant at normal temperature in a high speed dispersing machine to form grafting monomer / initiator mixture solution; 2. heating the double screw extruder to reaction temperature and feeding polypropylene resin; 3. adding the grafting monomer / initiator mixture solution to the extruder with one liquid pump, so as to mix peroxide initiator, acrylic polyether ester monomer and polypropylene melt well for reaction; and 4. pumping out low molecular matter with vacuum pump, cooling the extruded melt, and palletizing to obtain the grafted polypropylene / acrylic polyether ester product. The present invention has high grafting efficiency.

Description

technical field [0001] The invention relates to an improved polypropylene / acrylic polyether ester melting grafting process, which belongs to the technical field of polymer polymerization and processing. Background technique [0002] Polypropylene (PP) has a series of excellent properties, such as: low density, low price, chemical corrosion resistance, high mechanical strength, good heat resistance, etc., so it has a wide range of uses and has become the largest and fastest growing thermoplastic general-purpose plastic . However, because it is a non-polar, high-crystallinity polymer, there is a lack of polar reactive groups on the molecular chain, which leads to their poor hydrophilicity, antistatic properties, dyeability, and cohesiveness. To a certain extent, the further application of polypropylene is limited. [0003] The method to improve the antistatic properties of polypropylene is to blend surfactants (organic quaternary ammonium salts, organic sulfonates, etc.) Fo...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F4/28B29B9/02B29C47/10B29C47/64B29C47/60B29C47/92B29C48/405B29C48/67B29C48/92
CPCB29C47/92B29C48/405
Inventor 俞强姚自力王宏标秦文伟丁永红吴海萍
Owner 江苏创源科技新材料有限公司
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