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Grafting reaction device and molten grafting reaction method

A technology of grafting reaction and pre-reaction, which is applied in the field of grafting reaction device and melt grafting reaction, can solve the problems of low grafting rate, uneven dispersion of grafting aids, many side reactions, etc., and achieve high grafting rate , Reduce the occurrence of cross-linking side reactions, and improve the uniformity of dispersion

Active Publication Date: 2015-04-01
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a grafting reaction device to solve the problems of uneven dispersion of grafting aids, many side reactions, and low grafting rate during the melt grafting process.

Method used

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  • Grafting reaction device and molten grafting reaction method

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Experimental program
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Effect test

Embodiment 1

[0053] The diameter of the single-screw extruder 11 is 45mm, the width of the casting die 13 is 15mm, the screw temperature of the single-screw extruder 11 is set at 210°C, the thickness of the casting die 13 is set at 0.04mm, and the melt index is 4g / 10min (190°C, 2.16kg) LLDPE is added into the single-screw extruder from the feed port 12, and the thickness of the cast polymer film is 0.045mm, and the width of the film is 13mm; 50g of DCP is dissolved in the In the feeding device that has 1kg acetone, adopt liquid loss-in-weight type metering pump to spray mixed solution to polymer film 14 surface by nozzle, liquid weight-loss type metering pump flow rate is 30ml / min; 1kg maleic anhydride is dissolved in 1kg acetone In the feeding device, the liquid weight loss metering pump is used to spray the mixed solution to the surface of the polymer film 14 through the nozzle, and the flow rate of the liquid weight loss metering pump is 60ml / min; after the polymer film 14 directly enter...

Embodiment 2

[0056] The diameter of the single-screw extruder 11 is 45 mm, the width of the casting die is 15 mm, the temperature of the single-screw extruder is set at 210° C., the thickness of the casting die 13 is set at 0.03 mm, and the melt index is 7 g / 10 min ( 230 DEG C, 2.16kg) PP is added in the extruder from feeding port 12, and the thickness of casting polymer film 14 is 0.04mm, and the width of polymer film is 13.5mm; The DCP of 50g is dissolved in 1kg In the feeding device of acetone, the liquid weight loss type metering pump mixed solution is sprayed onto the surface of the polymer film through the nozzle, and the flow rate of the liquid weight loss type metering pump is 50ml / min; 1kg maleic anhydride is dissolved in the feeding device equipped with 1kg acetone Middle; use the liquid weight loss metering pump to spray the mixed solution through the nozzle to the surface of the polymer film, and the flow rate of the liquid weight loss metering pump is 90ml / min; after the polyme...

Embodiment 3

[0059] The diameter of the single-screw extruder 11 is 45mm, the width of the casting die is 15mm, the temperature of the single-screw extruder is set at 210°C, the thickness of the casting die 13 is set at 0.04mm, and the melt index is 8g / 10min ( 190 DEG C, 2.16kg) HDPE is added in the extruder from feeding port 12, and the thickness of casting polymer film 14 is 0.045mm, and the width of polymer film 14 is 13mm; 50g of 2,5-dimethyl Base-2,5-bis(tert-butyl peroxide) hexane is dissolved in the feeding device that 1kg acetone is housed, adopts the liquid weight-loss type metering pump to spray the mixed solution to the surface of the polymer film 14 through the nozzle, and the flow rate of the metering pump is 30ml / min; 1kg of maleic anhydride is dissolved in a feeding device equipped with 1kg of acetone, and the liquid weight loss metering pump is used to spray the mixed solution to the surface of the polymer film 14 through the nozzle, and the liquid weight loss metering pump ...

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Abstract

The invention discloses a grafting reaction device. The grafting reaction device comprises film casting equipment, grafting addition agent dispersion pre-reaction equipment and reactive extrusion grafting equipment, wherein the film casting equipment is used for extruding a premixed material in a mixed mode and casting the premixed material into a polymer film; the grafting addition agent dispersion pre-reaction equipment is used for dispersing grafting addition agents onto the polymer film and making the grafting addition agents have a pre-grafting reaction with the polymer film; the reactive extrusion grafting equipment is used for grafting functional monomers to a polymer molecule chain to form a graft polymer. According to the grafting reaction device, the polymer is cast to form the film, the grafting addition agents are dissolved in a dispersing agent and sprayed on the molten polymer film in a mist spray mode, the pre-grafting reaction happens to the surface of the molten polymer film, a grafting reaction is completely conducted in the reactive extrusion grafting equipment, a trace of the grafting addition agents are uniformly dispersed, the intercoupling probability of free radical active points of the polymer is lowered when the material is constantly sheared in a screw rod and an interface is updated so that the occurrence probability of crosslinking side reactions can be lowered, and the graft polymer which is high in grafting ratio, small in fisheye quantity and small in smell is obtained.

Description

technical field [0001] The invention relates to the technical field of polymer material processing, in particular to a grafting reaction device and a melting grafting reaction method. Background technique [0002] Chemical grafting is one of the most common methods of modifying polymers. It can change the properties of the polymer itself, endow it with new functions, and expand the application field of the polymer. The grafting reaction is to graft some groups with special functions to the main chain or side chain of the molecular chain of the polymer through free radical polymerization, ionic polymerization, etc., so that the polymer has new characteristics. Common grafting methods include melt grafting, solid phase grafting, solution grafting, and irradiation grafting. [0003] Melt grafting is one of the most easy industrial production, the lowest cost, and a grafting method with a high grafting rate. However, the side reactions of this method are difficult to control, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F263/04C08F222/06C08F220/06C08L51/06
Inventor 王明辉唐舫成汪加胜周智轶陈文斌
Owner GUANGZHOU LUSHAN NEW MATERIALS
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