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Hydrophobic starch-fiber composite foam material and preparation method thereof

A fiber composite, hydrophobic starch technology is applied in the field of foam material preparation, which can solve the problems of non-renewable raw materials and poor degradation treatment, and achieve the effects of improving binding adsorption performance, uniform distribution, and increasing hydrophobic performance.

Pending Publication Date: 2020-05-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to provide a hydrophobic starch fiber composite foam material, which solves the problems that the existing materials are not easy to degrade and the raw materials are not renewable

Method used

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  • Hydrophobic starch-fiber composite foam material and preparation method thereof
  • Hydrophobic starch-fiber composite foam material and preparation method thereof
  • Hydrophobic starch-fiber composite foam material and preparation method thereof

Examples

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preparation example Construction

[0042] A kind of preparation method of hydrophobic starch fiber composite foam material is characterized in that, comprises the following steps:

[0043] 1) In terms of parts by mass, weigh 100 parts of starch, 10-50 parts of plant fiber, 10-30 parts of plasticizer, 1-10 parts of filler, 1-5 parts of silane coupling agent and 0.5-2.5 parts of hydrophobic agent. share;

[0044] 2) Use a fiber disintegrator to disintegrate the plant fibers into single, wet fibers, then beat to 45°SR to 90°SR, and sieve through a 200-mesh screen to obtain fine fibers for subsequent use;

[0045] 3) mixing starch and a plasticizer, and performing gelatinization treatment to obtain gelatinized starch;

[0046] 4) adding the aqueous solution of the filler into the gelatinized starch, stirring evenly to obtain sample A;

[0047] 5) Adjust the temperature to 75°C, add silane coupling agent and hydrophobic agent to sample A, stir evenly, and obtain sample B;

[0048] 6) adding fine fibers into sampl...

Embodiment 1

[0057] 1) 10 parts of cotton plant fibers are decomposed and refined to 45 ° SR, and then sieved through a 200-mesh screen to obtain fine fibers for subsequent use;

[0058] 2) Mix 100 parts of tapioca starch and 10 parts of glycerin, add an appropriate amount of distilled water and stir evenly, and perform gelatinization treatment with a stirrer at a low stirring speed at 85° C. to obtain gelatinized tapioca starch;

[0059] 3) Take another 5 parts of calcium carbonate and ultrasonically disperse in water to obtain a dispersion liquid, add the dispersion liquid to the above-mentioned gelatinized tapioca starch and stir evenly to obtain sample A;

[0060] 4) Adjust the stirring temperature to 75°C, add 1 part of silane coupling agent and 0.5 part of stearic acid to sample A and stir evenly to obtain sample B;

[0061] 5) adding fine fibers into sample B, and uniformly mixing at a higher stirring speed to obtain sample C;

[0062] 6) Pour sample C into the mold, cool to room t...

Embodiment 2

[0090] 1) 30 parts of hardwood plant fibers are decomposed and refined to 67 ° SR, and then sieved by 200 mesh screens to obtain fine fibers for subsequent use;

[0091] 2) Mix 100 parts of wheat starch and 20 parts of ethylene glycol, add an appropriate amount of distilled water and stir evenly, and perform gelatinization treatment with a stirrer at a low stirring speed at 85°C to obtain gelatinized wheat starch;

[0092] 3) Another part of talcum powder was ultrasonically dispersed in water to obtain a dispersion liquid, which was added to the above-mentioned gelatinized wheat starch and stirred evenly to obtain sample A;

[0093] 4) Adjust the stirring temperature to 75°C, add 2.5 parts of silane coupling agent and 1.5 parts of stearic acid to sample A and stir evenly to obtain sample B;

[0094] 5) adding fine fibers into sample B, and uniformly mixing at a higher stirring speed to obtain sample C;

[0095] 6) Pour sample C into the mold, cool to room temperature, refrige...

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Abstract

The invention discloses a hydrophobic starch-fiber composite foam material which is prepared from 100 parts of starch, 10-50 parts of plant fibers, 10-30 parts of a plasticizer, 1-10 parts of a filler, 1-5 parts of a silane coupling agent and 0.5-2.5 parts of a hydrophobic agent. The material has the advantages of uniform pore distribution, high porosity, good resilience, low density, hydrophobicsurfaces and oil-water selectivity. Compared with extrusion and mould pressing process methods, the preparation method of the hydrophobic starch fiber composite foam material disclosed by the invention has the advantages that a freezing replacement method is adopted, the requirement on operation equipment is low, the operation is simple and safe, and the size, the dimension and the shape of a sample can be controlled.

Description

technical field [0001] The invention belongs to the technical field of foam material preparation, and in particular relates to a hydrophobic starch fiber composite foam material and a preparation method thereof. Background technique [0002] When dealing with marine oil spill accidents, oil-absorbing materials are often used to recover oily substances through absorption and adsorption. This material is mainly made of petroleum, which is easy to process and is prepared by extrusion and blow molding. It is widely used. The synthetic foam material is made of polypropylene or polyurethane. They have good water resistance and lipophilicity, but they cannot be biodegraded after use. The method of deep burial will pollute the groundwater source and destroy the soil. structure; incineration treatment will seriously pollute the air and atmospheric environment; recycling, heavy workload and high cost; and petroleum raw materials are non-renewable resources, long-term use of such mater...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L97/02C08L1/02C08L91/00C08K13/02C08K3/26C08K3/34C08K5/54C08K5/09C08J9/28C08J9/40
CPCC08J9/0061C08J9/28C08J9/40C08J2303/02C08J2401/02C08J2491/00C08J2497/02C08K3/34C08K5/09C08K5/54C08K13/02C08K2003/265
Inventor 殷学风袁枚林涛王瑞晨张希娟范晶李静田杏欢
Owner SHAANXI UNIV OF SCI & TECH
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