Synthetic paper preparation method based on emulsion polymerization

An emulsion polymerization method and a technology for synthetic paper, applied in the field of synthetic paper preparation, can solve the problem of low mechanical strength of synthetic paper and achieve the effect of improving mechanical strength

Active Publication Date: 2015-03-11

FOSHAN CITY DONGDA PACKING CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of low mechanical strength of ...

Abstract

Belonging to the technical field of synthetic paper preparation, the invention relates to a synthetic paper preparation method based on emulsion polymerization. The method includes the steps of: adding water and an emulsifier into a reactor, stirring the mixture evenly, then adding divinyl benzene, vinylidene chloride and acrylonitrile, stirring the mixture evenly, and then adding an initiator, performing heating to carry out polymerization reaction, then adding ferric trioxide and powder, stirring the mixture evenly, and conducting pumping filtration to obtain a polymer, then washing a filter cake with ethanol, and drying the filter cake to obtain a prepolymer; mixing the prepolymer, polyethylene, polypropylene, plant fiber, starch, a surfactant, dicumyl peroxide, calcium stearate, zinc stearate and an antioxidant evenly to obtain a mixture; and sending the mixture into a twin-screw extruder to undergo extrusion granulation, then performing blow molding on the obtained pellets, and conducting cutting. The powder granules are coated by means of emulsion polymerization, and the mechanical strength of the synthetic paper can be improved.

Technology Topic

PrepolymerActive agent +22

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Examples

Experimental program(3)
Comparison scheme(2)
Effect test(1)

Example Embodiment

[0028] Example 1

[0029] A method for preparing synthetic paper based on emulsion polymerization includes the following steps:

[0030] Step 1. Preparation of prepolymer: Add 80Kg of water and 1Kg of emulsifier to the reactor, stir well, then add 2Kg of divinylbenzene, 1Kg of vinylidene chloride, and 3Kg of acrylonitrile. After stirring, add the initiator. 0.1Kg, heated for polymerization, then add 1Kg of iron trioxide, 20Kg of powder, stir evenly, obtain the polymer after suction filtration, then wash the filter cake with ethanol, and dry the filter cake to obtain the prepolymer. Polymerization reaction The temperature is 70°C, the polymerization reaction time is 1 hour; the powder is calcium carbonate; the initiator is hydrogen peroxide; the emulsifier is sodium dodecylbenzene sulfonate;

[0031] The second step, prepolymer, polyethylene 30Kg, polypropylene 10Kg, plant fiber 40Kg, starch 4Kg, surfactant 2Kg, dicumyl peroxide 2Kg, calcium stearate 1Kg, zinc stearate 1Kg, anti Oxygen agent 1Kg, mixed uniformly, and the mixing temperature is 80°C to obtain the mixture; the plant fiber refers to the corn stalk pulverized and the plant fiber size is between 50-500 microns; the antioxidant is Antioxidant 1010;

[0032] In the third step, the mixture is fed into a twin-screw extruder to be extruded and pelletized, and then the pellets obtained are blow-molded. After cutting, the extrusion temperature of the twin-screw extruder is 100℃, The zone temperature is 110°C, the third zone temperature is 130°C, the fourth zone temperature is 140°C, the fifth zone temperature is 130°C, and the screw speed is 120rpm.

[0033]

Example Embodiment

[0034] Example 2

[0035] A method for preparing synthetic paper based on emulsion polymerization includes the following steps:

[0036] Step 1. Preparation of prepolymer: Add 100Kg of water and 3Kg of emulsifier to the reactor, stir evenly, then add 4Kg of divinylbenzene, 3Kg of vinylidene chloride, and 5Kg of acrylonitrile. After stirring evenly, add initiator 0.4Kg, heated for polymerization, then add 2Kg of iron trioxide, 30Kg of powder, stir evenly, get the polymer after suction filtration, then wash the filter cake with ethanol, and dry the filter cake to obtain the prepolymer. Polymerization The temperature is 80°C, the polymerization reaction time is 2 hours; the powder is calcium carbonate; the initiator is hydrogen peroxide; the emulsifier is sodium dodecylbenzene sulfonate;

[0037] The second step, prepolymer, polyethylene 40Kg, polypropylene 20Kg, plant fiber 60Kg, starch 7Kg, surfactant 3Kg, dicumyl peroxide 4Kg, calcium stearate 2Kg, zinc stearate 2Kg, anti Oxygen is 2Kg, mixed uniformly, and the mixing temperature is 90°C to obtain the mixture; the plant fiber refers to the corn stalks obtained after crushing, the plant fiber size is between 50-500 microns; the antioxidant is Antioxidant 1010;

[0038] In the third step, the mixture is fed into a twin-screw extruder to be extruded and pelletized, and then the resulting pellets are blow-molded. After cutting, the extrusion temperature of the twin-screw extruder is 120℃, The zone temperature is 130℃, the three zone temperature is 140℃, the four zone temperature is 150℃, the five zone temperature is 140℃, and the screw speed is 160 rpm.

[0039]

Example Embodiment

[0040] Example 3

[0041] A method for preparing synthetic paper based on emulsion polymerization includes the following steps:

[0042] Step 1. Preparation of prepolymer: Add 90Kg of water and 2Kg of emulsifier to the reactor, stir well, then add 3Kg of divinylbenzene, 2Kg of vinylidene chloride, and 4Kg of acrylonitrile. After stirring evenly, add initiator 0.3Kg, heated for polymerization, then add 1Kg of iron trioxide and 25Kg of powder, stir evenly, get the polymer after suction filtration, then wash the filter cake with ethanol, and dry the filter cake to obtain the prepolymer. Polymerization The temperature is 75°C, the polymerization reaction time is 2 hours; the powder is calcium carbonate; the initiator is hydrogen peroxide; the emulsifier is sodium dodecylbenzene sulfonate;

[0043] The second step, prepolymer, polyethylene 35Kg, polypropylene 15Kg, plant fiber 50Kg, starch 6Kg, surfactant 3Kg, dicumyl peroxide 3Kg, calcium stearate 2Kg, zinc stearate 2Kg, anti Oxygen is 1Kg, mixed uniformly, and the mixing temperature is 85°C to obtain the mixture; the plant fiber refers to the corn stalks obtained after crushing, the plant fiber size is between 50-500 microns; the antioxidant is Antioxidant 1010;

[0044] In the third step, the mixture is fed into a twin-screw extruder to be extruded and pelletized, and then the pellets obtained are blow-molded. After cutting, the extrusion temperature of the twin-screw extruder is 110℃, The zone temperature is 120℃, the three zone temperature is 135℃, the four zone temperature is 145℃, the five zone temperature is 135℃, and the screw speed is 140 rpm.

[0045]

PUM

Property	Measurement	Unit
Size	50.0 ~ 500.0	µm

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

High mechanical strength

Synthetic paper preparation method based on emulsion polymerization

An emulsion polymerization method and a technology for synthetic paper, applied in the field of synthetic paper preparation, can solve the problem of low mechanical strength of synthetic paper and achieve the effect of improving mechanical strength

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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