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Preparation method for polybutylene succinate/graphene-molybdenum-disulfide-like nanocomposite material

A technology of polybutylene succinate and nano-composite materials, applied in the field of biodegradable materials, can solve the problems of poor gas-liquid barrier property, poor melt strength, slow crystallization rate, etc. the effect of reducing the nucleation energy barrier

Inactive Publication Date: 2018-02-23
LANZHOU CITY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although polybutylene succinate has been widely used in packaging, tableware, agricultural film and other fields, the disadvantages of poor melt strength, slow crystallization rate and poor gas-liquid barrier properties make polybutylene succinate modification become Research Hotspots

Method used

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  • Preparation method for polybutylene succinate/graphene-molybdenum-disulfide-like nanocomposite material
  • Preparation method for polybutylene succinate/graphene-molybdenum-disulfide-like nanocomposite material
  • Preparation method for polybutylene succinate/graphene-molybdenum-disulfide-like nanocomposite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Mix deionized water and butanediol at a molar ratio of 1:0.8 to obtain a butanediol / water mixture; add molybdenum disulfide powder to the above-mentioned butanediol / water mixture at a ratio of 2 mg / mL, and seal Under the power of 300W, liquid phase ultrasonication at room temperature for 40h, and then centrifuged at 10000rpm for 30min, the upper layer of dark green liquid was retained, and a stable graphene-like molybdenum disulfide dispersion was obtained.

[0027] Add 11.81g of succinic acid to 12.40g of the above-mentioned graphene-like molybdenum disulfide dispersion, raise the temperature to 170-210°C under the protection of nitrogen, and vigorously stir mechanically until no water is formed in the water separator to obtain graphene-like molybdenum disulfide Molybdenum hydroxyl-terminated prepolymer.

[0028] Quickly add 0.11g catalyst n-butyl titanate to the above-mentioned hydroxyl-terminated prepolymer containing graphene-like molybdenum disulfide under stirring...

Embodiment 2

[0030] Mix deionized water and butanediol at a molar ratio of 1:1 to obtain a butanediol / water mixture; add molybdenum disulfide powder to the above-mentioned butanediol / water mixture at a ratio of 2 mg / mL, and seal the Liquid phase ultrasonication at room temperature for 16 hours at 600W power, and then centrifuged at 10,000rpm for 30 minutes to retain the dark green liquid in the upper layer to obtain a stable graphene-like molybdenum disulfide dispersion.

[0031] Add 11.81g of succinic acid to 12.98g of the above-mentioned graphene-like molybdenum disulfide dispersion, raise the temperature to 180-225°C under the protection of nitrogen, and vigorously stir mechanically until no water is generated in the water separator to obtain graphene-like molybdenum disulfide Molybdenum hydroxyl-terminated prepolymer.

[0032] Quickly add 0.22g of catalyst germanium dioxide to the above-mentioned hydroxyl-terminated prepolymer containing graphene-like molybdenum disulfide under stirrin...

Embodiment 3

[0034] Mix deionized water and butanediol at a molar ratio of 1:1.5 to obtain a butanediol / water mixture; add molybdenum disulfide powder to the above-mentioned butanediol / water mixture according to the ratio of 2 mg / mL, and seal the Under the power of 540W, liquid phase ultrasonication at room temperature was carried out for 24 hours, and then centrifuged at a speed of 10,000 rpm for 30 minutes, and the upper layer of dark green liquid was retained to obtain a stable graphene-like molybdenum disulfide dispersion.

[0035] Add 11.81g of succinic acid to 10.73g of the above-mentioned graphene-like molybdenum disulfide dispersion, raise the temperature to 160-200°C under the protection of nitrogen, and vigorously stir mechanically until no water is formed in the water separator to obtain graphene-like molybdenum disulfide Molybdenum hydroxyl-terminated prepolymer.

[0036] Quickly add 0.11g catalyst n-butyl titanate to the above-mentioned hydroxyl-terminated prepolymer containin...

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Abstract

The invention discloses a preparation method for a polybutylene succinate / graphene-molybdenum-disulfide-like nanocomposite material. The preparation method comprises the following steps: adding molybdenum disulfide powder to mixed liquid of butanediol and water, and centrifugally separating after the room temperature liquid phase ultrasonic treatment; adding a succinic acid to upper deep green liquid obtained by the centrifugal separation, strongly and mechanically stirring until no water is generated in 150-225 DEG C of the temperature under the nitrogen protection, to obtain a terminal hydroxyl prepolymer containing the graphene-molybdenum-disulfide-like; rapidly adding a catalyst to the terminal hydroxyl prepolymer under the stirring condition, and warming to 210-250 DEG C, and vacuumizing to 50-250 Pa, continuously stirring until the obvious pole-climbing occurs, and ending the reaction, to obtain the polybutylene succinate / graphene-molybdenum-disulfide-like nanocomposite material.The composite material is capable of improving the crystallization temperature of the polybutylene succinate, shortening the crystallization time, and refining the crystal grains of the polybutylenesuccinate.

Description

technical field [0001] The invention relates to the field of biodegradable materials, in particular to a preparation method of a polybutylene succinate / graphene-like molybdenum disulfide nanocomposite material. Background technique [0002] Polybutylene succinate (also known as polybutylene succinate or polybutylene succinate, PBS for short) is a semi-crystalline thermoplastic resin with complete biodegradability, and its crystallinity is between 40% and 60%. It has good comprehensive mechanical and thermal properties, and excellent processing performance. It can be used for blow molding, blister molding, injection molding, casting, film blowing and spinning on general-purpose plastic processing equipment. Degradable star products in polymer materials. Although polybutylene succinate has been widely used in packaging, tableware, agricultural film and other fields, the disadvantages of poor melt strength, slow crystallization rate and poor gas-liquid barrier properties make ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/16C08K3/04C08K3/30
CPCC08G63/16C08K3/04C08K3/30C08K2003/3009
Inventor 陈奎张天云刘广桥董丽梅陈建宏郑小平
Owner LANZHOU CITY UNIV
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