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A kind of preparation method of biomass fiber-aliphatic polyester composite material

A technology of biomass fiber and aliphatic polyester, which is applied in the field of preparing aliphatic polyester composite materials, to achieve the effects of improving comprehensive performance, good reinforcement, and low cost

Active Publication Date: 2016-05-11
SHAANXI HUAHAOXUAN NEW ENERGY TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The above-mentioned interfacial modifiers can be used as coupling agents for biomass fiber-aliphatic polyester composite materials, but their type and dosage need to be changed according to the type of reinforcing fiber and polyester matrix, and the above-mentioned types of modifiers are currently lacking Effects on Biodegradability of Composite Materials Reported

Method used

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  • A kind of preparation method of biomass fiber-aliphatic polyester composite material
  • A kind of preparation method of biomass fiber-aliphatic polyester composite material
  • A kind of preparation method of biomass fiber-aliphatic polyester composite material

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preparation example Construction

[0036] A preparation method of biomass fiber-aliphatic polyester composite material, comprising the following steps:

[0037] Step 1, preparation of biomass-based macromolecular coupling agent product:

[0038] Dissolve the biomass-based components in a suitable aprotic solvent to obtain a solution with a mass concentration of 0.1% to 10%, and stir for 1 to 20 minutes under the protection of an inert gas. The molar ratio is dropped into the esterification reaction reagent, and the reaction is stirred at 30-70°C for 8-48 hours; the product after the above-mentioned stirring reaction is precipitated in 2-20 times the volume of deionized water, separated and precipitated, and the biomass-based macromolecular coupling is obtained. agent product;

[0039] Step 2, surface treatment of biomass fibers:

[0040] Continue dissolving the biomass-based macromolecular coupling agent obtained in step 1 in an aprotic solvent to prepare a solution with a mass fraction of 0.5-20%; use the pr...

Embodiment 1

[0048] (1) Synthesis of lignin-based macromolecular coupling agent: dissolve 5 g of kraft lignin in 100 ml of DMF, pass N 2 Stir for 10 minutes under protected conditions, drop in lauroyl chloride with a molar ratio of 1:1.2 reactive groups, stir and react at 50°C for 24 hours, and the obtained product is precipitated in 6 times the volume of deionized water to obtain a lignin-based macromolecular coupling agent product.

[0049] (2) Surface treatment of wood flour: the obtained lignin-based macromolecular coupling agent was dissolved in DMF to prepare a solution with a concentration of 5%. Surface-treat 80-mesh poplar wood powder with the prepared solution, wherein the amount of macromolecular coupling agent relative to the wood powder is 2% by mass ratio, stir in a high-speed mixer at a speed of 2000rpm for 15min, and drum at 100°C Air-dried for 12 hours to obtain surface-treated wood powder.

[0050] (3) Preparation of composite materials: Proportioning materials accordin...

Embodiment 2

[0053] (1) Synthesis of cellulose-based macromolecular coupling agent: 5g hydroxyethyl cellulose (HEC) was dissolved in 100mlDMF, and passed N 2 Stir under protected conditions for 10 minutes, drop octanoyl chloride at a reactive group molar ratio of 1:1.3, stir and react at 50°C for 24 hours, and the obtained product is precipitated in 8 times the volume of deionized water to obtain a cellulose-based macromolecular coupling agent product.

[0054] (2) Surface treatment of bamboo fibers: the obtained macromolecular coupling agent was dissolved in DMF to prepare a solution with a concentration of 3%. Carry out surface treatment to 80 order bamboo powders with the solution that is made, wherein the consumption of macromolecule coupling agent is 2% with respect to the consumption of bamboo powders by mass ratio, stir 15min with the rotating speed of 2000rpm in high-speed mixer, blast under 100 ℃ Dry for 12h.

[0055] (3) Preparation of composite materials: Proportioning materia...

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Abstract

The invention discloses a preparation method and application for a biomass fibre-aliphatic polyester composite material macromolecular coupling agent. The preparation method comprises the following steps: (1) synthesis for a biomass constituent-based macromolecular coupling agent; (2) surface hydrophobic modification for biomass fibre raw materials; (3) compounding for the modified biomass fibre raw materials and an aliphatic polyester matrix. The method can be used for various aliphatic polyester matrixes and is low in raw material limit; moreover, the composite material product is wide in application and can be used for the fields of household appliances, automobile industry, packaging, daily necessities and the like. The method is low in production cost, beneficial to popularize and apply, and has great significance in the aspects of improving the utilization level of biomass raw materials, alleviating petroleum resource crisis, protecting environment, and the like.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a method for preparing aliphatic polyester composite materials by modifying the surface of biomass fibers with a biomass component-based macromolecular coupling agent. Background technique [0002] Polymer materials have become an important pillar of modern science and technology and national economic construction. Most of their raw materials come from petroleum, and most of them are difficult to degrade. The increasing scarcity of petroleum resources and the pressure of environmental protection make the development of low-carbon, environmentally friendly polymer materials an important task. Aliphatic polyester (such as PLA, PBS, PBAT, etc.) is a commercialized polymer material with excellent biodegradability and can be decomposed naturally under composting conditions. It is a green synthetic resin that can greatly reduce environmental pollution . However, aliphatic p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/02C08L97/02C08L1/26C08H7/00C08J3/00
Inventor 岳小鹏徐永建周乐群朱振峰田勇张鼎军
Owner SHAANXI HUAHAOXUAN NEW ENERGY TECH DEV CO LTD
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