Preparation method of fiber composite material

A technology of fiber composite materials and raw materials, applied in the field of composite materials, can solve problems such as material waste, environmental pollution, and refractory degradation, and achieve the effects of cost reduction, good bonding effect, and easy decomposition

Pending Publication Date: 2022-01-11
WEIFANG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of food packaging, most of the packaging materials for medical disposable appliances are ordinary plastic films. After packaging, a large amount of fresh-keeping materials need to be used, resulting in a great waste of materials (the use of a large number of disposable packaging materials) and environmental pollution.
[0004] Commonly used plastics are prepared from petroleum-based fibers, but such composite materials have the disadvantage of being difficult to degrade, and there is an urgent need to obtain composite materials with good biodegradability
In addition, the existing plastic material is brittle and easy to break

Method used

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  • Preparation method of fiber composite material
  • Preparation method of fiber composite material
  • Preparation method of fiber composite material

Examples

Experimental program
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preparation example Construction

[0023] The invention provides a method for preparing a fiber composite material, which comprises the following steps: after pulverizing the woody raw material, steaming at 85-100°C for 130-150 minutes, taking out the steamed woody raw material, and pre-processing it through a mixed enzyme solution treatment to obtain enzyme-treated products; add sodium hydroxide solution to the enzyme-treated products and soak for 20-28 hours, then rinse until neutral, and dry to obtain alkali-treated products; dilute the silane coupling agent in absolute ethanol, add Alkali-treated products, mixed, and then dried to obtain the first treated product; the first treated product, base material, antioxidant and lubricant were weighed in proportion, added to a twin-screw extruder, and heated at 170-220 ° C, Perform high-temperature kneading at 60-80 r / min to obtain a blend; after the blend is crushed, injection molding is performed, and the fiber composite material is obtained after cooling and demo...

Embodiment 1

[0036] A method for preparing a fiber composite material, comprising the steps of:

[0037] After pulverizing the agave to 40 μm, steam it at 85°C for 130 minutes,

[0038]Mix pectin lyase and xylanase at a mass ratio of 0.1:1.5 to prepare a mixed enzyme solution with a concentration of 30%, and mix the steamed agave with the mixed enzyme solution at a mass ratio of 1:2 , soaked at 45°C for 5h, washed and dried at 35°C to obtain the enzyme-treated product;

[0039] The enzyme-treated product is soaked in a 5% sodium hydroxide solution for 20 hours, rinsed until neutral, and dried at 35°C to obtain the alkali-treated product;

[0040] Weigh KH550 and the alkali-treated product according to the mass ratio of KH550 and alkali-treated product 0.3:1, add the silane coupling agent to 8 mass times of absolute ethanol to dilute, add the alkali-treated product, and mix at 900r / min for 20min , and then dried at 70°C for 100 minutes to obtain the first processed product;

[0041] Acco...

Embodiment 2

[0044] A method for preparing a fiber composite material, comprising the steps of:

[0045] After the agave is crushed to 50 μm, it is steamed at 90°C for 140 minutes,

[0046] Mix pectin lyase and xylanase at a mass ratio of 0.3:1.7 to prepare a mixed enzyme solution with a concentration of 35%, and mix the steamed agave with the mixed enzyme solution at a mass ratio of 1:2.5 , soaked at 50°C for 7h, washed and dried at 40°C to obtain the enzyme-treated product;

[0047] The enzyme-treated product is soaked in 8% sodium hydroxide solution for 24 hours, rinsed until neutral, and dried at 40°C to obtain the alkali-treated product;

[0048] Weigh KH550 and the alkali-treated product according to the mass ratio of KH550 and alkali-treated product 0.6:1, add KH550 to 9 mass times of absolute ethanol to dilute, add the alkali-treated product, mix at 1100r / min for 23min, and then place Dry at 75°C for 120 minutes to obtain the first processed product;

[0049] According to the ma...

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Abstract

The invention provides a preparation method of a fiber composite material, and belongs to the field of composite materials. The invention relates to a preparation method of a fiber composite material. The preparation method comprises the following steps of: crushing a wood raw material, steaming the wood raw material at 85-100 DEG C for 130-150 minutes, taking out the steamed raw material, and pretreating the steamed raw material through a mixed enzyme solution to obtain an enzyme treatment product; adding the enzyme treatment product into a sodium hydroxide solution, soaking the enzyme treatment product for 20-28 hours, rinsing an obtained substance to be neutral, and drying the substance to obtain an alkali treatment product; adding a silane coupling agent into absolute ethyl alcohol for dilution, adding the alkali treatment product, performing mixing, and drying to obtain a first treatment product; weighing the first treatment material, a base material, an antioxidant and a lubricant in proportion, adding the weighed materials into a double-screw extruder, and carrying out high-temperature mixing at 170-220 DEG C and 60-80 r / min to obtain a blend; and crushing the blend, performing injection molding, cooling and demolding to obtain the fiber composite material. The composite material has the advantages of being good in biodegradability and not prone to breakage.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for preparing fiber composite materials. Background technique [0002] Plant fiber is a renewable natural resource, which widely exists in nature and has many advantages such as easy acquisition and recyclability. The plant fiber polypropylene composite material has low cost, good performance and resource saving, and has broad application prospects in auto parts. For a long time, people have devoted themselves to studying the improvement of various properties of plant fiber composite materials, and strived to improve the utilization rate of plant fiber composite materials. [0003] At present, the application of plastics in real life is ubiquitous, and it is obvious to all that it is difficult to degrade and cause harm to the environment. With the improvement of public awareness of environmental protection, degradable plastics have been used to protect the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08H8/00C08L67/04C08L23/06C08L33/20C08L23/12C08L97/02C08L83/04C08K5/524
CPCC08H8/00C08L67/04C08L23/06C08L33/20C08L23/12C08L2205/16C08L2207/062C08L97/02C08L83/04C08K5/524
Inventor 马连生王颖王强丁艳梅王腾
Owner WEIFANG UNIV OF SCI & TECH
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