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Method for preparing synthetic paper based on ultrahigh-molecular weight polyethylene

A technology of ultra-high molecular weight and polyethylene, applied in the field of synthetic paper based on ultra-high molecular weight polyethylene, can solve the problems of low heat distortion temperature and surface hardness, difficult molding and processing, and large expansion coefficient, and achieve controllable performance and mechanical The effect of good performance and simple preparation process

Active Publication Date: 2014-05-14
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this material also has many disadvantages, such as its low heat distortion temperature and surface hardness, large expansion coefficient, extremely poor flow properties and very difficult molding process.

Method used

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  • Method for preparing synthetic paper based on ultrahigh-molecular weight polyethylene
  • Method for preparing synthetic paper based on ultrahigh-molecular weight polyethylene
  • Method for preparing synthetic paper based on ultrahigh-molecular weight polyethylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Filler treatment: 20g nano-SiO 2 Add 350ml of absolute ethanol / water mixed solution (V 无水乙醇 :V 蒸馏水 =3:1), after shearing and stirring at a speed of 3000r / min for 20min under a high-shear emulsifier, the nano-SiO 2 The suspension was placed in a three-necked flask. Add 34ml of silane coupling agent KH550 with a mass fraction of 12% (absolute ethanol as diluent) into the three-necked bottle. Heat to 85°C in a water bath, stir (300r / min) and react for 90min. After the reaction, the suspension system in the three-neck flask was suction-filtered, and the filter cake was washed with absolute ethanol, dried and ground to obtain the modified nano-SiO 2 .

[0036] (2) Preparation of masterbatch: 4g modified nano-SiO 2 , 16g UHMWPE, 60g white oil, 0.1g antioxidant 1010, after being stirred and ultrasonically premixed, extruded through a twin-screw extruder (the temperatures in the four temperature setting zones are respectively set to 160°C, 200°C, 240°C, and 270°C) , ...

Embodiment 2

[0045] (1) Filler treatment: 20g nano-SiO 2 Add 350ml of absolute ethanol / water mixed solution (V 无水乙醇 :V 蒸馏水 =3:1), after shearing and stirring at a speed of 3000r / min for 20min under a high-shear emulsifier, the nano-SiO 2 The suspension was placed in a three-necked bottle. Add 34ml of 12wt% (absolute ethanol as diluent) silane coupling agent KH560 into the three-necked bottle. Heat to 85°C in a water bath, stir (300r / min) and react for 90min. After the reaction, the suspension system in the three-neck flask was suction-filtered, and the filter cake was washed with absolute ethanol, dried and ground to obtain the modified nano-SiO 2 .

[0046] (2) Preparation of masterbatch: 6g of the above-mentioned modified nano-SiO 2 , 14g UHMWPE, 60g white oil, 0.1g antioxidant 1010, after being stirred and ultrasonically premixed, extruded through a twin-screw extruder (the temperatures in the four temperature setting zones are respectively set to 160°C, 200°C, 240°C, and 270°C) ...

Embodiment 3

[0054] (1) Filler treatment: 20g nano-SiO 2 Add 350ml of absolute ethanol / water mixed solution (V 无水乙醇 :V 蒸馏水 =3:1), after shearing and stirring at a speed of 3000r / min for 20min under a high-shear emulsifier, the nano-SiO 2 The suspension was placed in a three-necked bottle. Add 34ml of 12wt% (absolute ethanol as diluent) silane coupling agent KH570 into the three-necked bottle, and adjust pH=4 with dilute hydrochloric acid (absolute ethanol as diluent). Heat to 85°C in a water bath, stir (300r / min) and react for 90min. After the reaction, the suspension system in the three-neck flask was suction-filtered, and the filter cake was washed with absolute ethanol, dried and ground to obtain the modified nano-SiO 2 .

[0055] (2) Preparation of masterbatch: 8g of the above-mentioned modified nano-SiO 2 , 12g UHMWPE, 60g white oil, 0.1g antioxidant 1010, after being stirred and ultrasonically premixed, extruded through a twin-screw extruder (the temperatures in the four temper...

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Abstract

The invention relates to a method for preparing synthetic paper based on ultrahigh-molecular weight polyethylene. The method comprises the following steps: modifying an inorganic filler to obtain a modified filler, then uniformly premixing the modified filler with the ultrahigh-molecular weight polyethylene, a compatilizer, an antioxidant and an additive, performing melt-extrusion, and pelleting to obtain master batches; flatly laying the master batches on a hollow mold, melting and hot-pressing the master batches in the shape of a membrane, cold-rolling, and extracting to obtain the synthetic paper. The synthetic paper prepared by the method disclosed by the invention has excellent performances of good mechanical properties, light weight, solvent resistance, micro-porosity and the like.

Description

technical field [0001] The invention belongs to the field of preparation of synthetic paper, in particular to a method for preparing synthetic paper based on ultra-high molecular weight polyethylene. Background technique [0002] Synthetic paper, also known as chemical film paper, plastic paper, polymer paper, etc., not only has the appearance, whiteness, stiffness, opacity, printing and writing properties of natural plant fiber paper, but also has the lightness of plastic film , Moisture-proof, anti-oxidation, acid resistance, alkali resistance, anti-pollution and other excellent characteristics. [0003] Since the 1960s, countries have been committed to the trial production and production of synthetic paper, aiming to replace wood with plastic, reduce the consumption of forest resources, and protect the environment. Today, the demand for paper is increasing all over the world, but plant fibers such as wood used as papermaking raw materials are decreasing day by day. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/06C08K9/06C08K3/36C08K3/22C08K5/01C08K5/134C08J3/22B29C43/58
CPCB29C43/58C08J3/226C08J2323/06C08K3/36C08K9/04C08K9/06C08K13/06C08K2201/011C08L2207/068C08L23/06
Inventor 罗艳何文卿杜鹃程党党王文良季玉秋
Owner DONGHUA UNIV
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