Method for preparing aliphatic polyester composite material by means of alkyl ketene dimer surface modification biomass fibers

A technology of alkyl ketene dimer and biomass fiber, which is applied in the field of cellulose modification and polymer composite materials, to achieve the effects of improving comprehensive performance, good reinforcement, and low cost

Active Publication Date: 2014-11-12
SHAANXI HUAHAOXUAN NEW ENERGY TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Compared with composite materials prepared by general-purpose plastics, there are still few reports on aliphatic polyester-based composite materials. It is still necessary to research and develop new methods to improve t

Method used

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  • Method for preparing aliphatic polyester composite material by means of alkyl ketene dimer surface modification biomass fibers
  • Method for preparing aliphatic polyester composite material by means of alkyl ketene dimer surface modification biomass fibers
  • Method for preparing aliphatic polyester composite material by means of alkyl ketene dimer surface modification biomass fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Preparation of AKD emulsion and its surface treatment of poplar wood powder:

[0065] Surface treatment of 80-100 mesh poplar wood powder with commercial series AKD emulsion (product of a company in Shandong, solid content 15%, AKD content 12%). The amount of AKD relative to poplar wood powder is 2% (mass fraction). Stir at 2000r / min for 15min in a high-speed mixer.

[0066] (2) Drying and curing treatment of poplar wood powder modified fiber:

[0067] According to the above surface modification, the poplar wood powder modified fiber was air-dried at 105° C. for 4 hours, and sealed for later use.

[0068] (3) Composite of poplar wood powder modified fiber and PBS:

[0069] The materials are proportioned according to the following mass percentages: 30% modified poplar wood powder fiber after drying treatment, 70% PBS, processed in an internal mixer at 120°C for 10 minutes, and hot pressed to form a PBS / poplar wood powder composite material. .

[0070] by Figure 1a , Figure 1...

Embodiment 2

[0072] (1) Preparation of AKD emulsion and its surface treatment of bamboo powder:

[0073] Surface treatment of 60-80 mesh bamboo powder with commercial series AKD emulsion (product of a company in Shandong, solid content 15%, AKD content 12%), the amount of AKD relative to bamboo powder is 2% (mass fraction), in a high-speed mixer Stir at 2000r / min for 15min.

[0074] (2) Drying and curing treatment of bamboo powder modified fiber:

[0075] The obtained modified bamboo powder fiber was air-dried at 90°C for 24 hours, and sealed for later use.

[0076] (3) Compound of bamboo powder modified fiber and PLA:

[0077] The materials are proportioned according to the following mass percentages: 35% of bamboo powder modified fiber after drying and curing treatment, 65% of PLA, processing at 200℃ for 8 minutes on a mill, and hot pressing to prepare PLA / bamboo powder composite material.

[0078] Compared with the composite material without AKD, the composite material prepared with AKD surface-t...

Embodiment 3

[0080] (1) Preparation of AKD emulsion and surface treatment of bamboo powder:

[0081] Weigh 15 grams of cationic starch, 1.5 grams of lignosulfonate, 17.5 grams of aluminum sulfate, and 846 mL of water, mix them thoroughly under stirring, and heat at 80°C for 60 minutes to form an emulsifier and place in an incubator. Heat 120 grams of AKD wax powder (product of a company in Shandong, chain length: C14-C16) to melt, and fully mix the emulsifier and AKD wax powder to prepare an emulsion with a mass fraction of 15%.

[0082] The surface treatment of 60-80 mesh bamboo powder is carried out with the emulsion, and it is stirred for 20 minutes with a high-speed mixer at 2000 r / min.

[0083] (2) The curing treatment of bamboo powder modified fiber:

[0084] The obtained bamboo powder modified fiber was air-dried at 100°C for 24 hours and sealed for later use.

[0085] (3) Compound of bamboo powder modified fiber and PBS:

[0086] The materials are proportioned according to the following mass...

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Abstract

The invention discloses a method for preparing an aliphatic polyester composite material by means of alkyl ketene dimer surface modification biomass fibers. The method comprises the steps of (1) preparation of an AKD emulsion and surface treatment of biomass fibrous raw materials through the AKD emulsion, (2) curing treatment of the surface modification fibers, and (3) composition of the surface modification biomass fibers and an aliphatic polyester matrix. The hydrogen bond bonding effect between the fibers obtained through surface hydrophobic treatment is weakened, agglomeration of the fibers in the aliphatic polyester matrix is reduced, and the interfacial strength of the composite material is improved, so that the composite material has the better comprehensive performance and particularly the mechanical performance. The composite material is wide in application range, and can be used for the fields of household electric appliances, automobile industry, packaging, daily necessities and the like, and the method is low in cost, simple in technology, convenient to implement and beneficial to application and popularization, and is of great significance in improving the utilization level of biomass raw materials, relieving the oil resource crisis, protecting the environment and the like.

Description

technical field [0001] The invention belongs to the field of advanced composite materials, relates to cellulose modification and polymer composite materials, and specifically relates to a method for improving the performance of biomass fiber-aliphatic polyester composite materials by adding alkyl ketene dimer (AKD) . 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. [0003] Biomass fiber-polymer composite materials are a new type of green composite materials. General-purpose plastics (such as PE, PP, PVC, etc.) or biodegradable plastics (mainly referring to aliphatic polyester materials) can be used...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L97/02C08H7/00C08J3/00
Inventor 岳小鹏徐永建宁宇震凤璐
Owner SHAANXI HUAHAOXUAN NEW ENERGY TECH DEV CO LTD
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