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Added HDPE/FF composite materials and preparation methods of charcoal FF

A composite material and carbonization technology, applied in the chemical characteristics of fibers, animal fibers, fiber processing, etc., can solve the problems of weak interface bonding, incompatibility of interfaces, rigidity and strength reduction of composite materials, etc., and achieve the effect of improving toughness.

Active Publication Date: 2020-01-21
TIANJIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plant fibers contain cellulose and pectin, and animal fibers are mostly polar substances such as amino acids and oils, while the selected polymer resins are mostly non-polar substances, and their interfaces are difficult to be compatible. There is a clear and obvious gap between the two. The interface, the interface binding force is weak, and the product is prone to mechanical defects
[0006] (2) There is a strong force inside the natural fiber, and it is not easy to disperse evenly in the matrix
[0009] Polymer toughening is generally the key research content of natural fiber / polymer composite materials. Elastomers were first used to toughen polymers. However, while improving the toughness of composite materials, the rigidity and strength of composite materials have dropped significantly.
The toughening system using inorganic rigid particles instead of rubber ensures the strength of the composite material, but the addition of inorganic particles affects the dispersion of natural fibers in the matrix and destroys the interfacial bonding between natural fibers and resins, thus affecting the toughening system. Toughening effect, solid research The degree of dispersion of inorganic particles between resins is related to factors such as the specific surface area of ​​inorganic particles, surface polarity, and the interface between inorganic particles and resins

Method used

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  • Added HDPE/FF composite materials and preparation methods of charcoal FF
  • Added HDPE/FF composite materials and preparation methods of charcoal FF
  • Added HDPE/FF composite materials and preparation methods of charcoal FF

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of HDPE / FF composite material that adds carbonized FF, its formula is:

[0059]

[0060] A kind of preparation method of adding the HDPE / FF composite material of charred FF, the step of its preparation method is:

[0061] (1) Prepare 90wt% ethanol aqueous solution, pour KH570 into the ethanol solution, stir magnetically for 1 hour, and vibrate ultrasonically for 2 hours. Soak FF in ethanol for 1 hour, heat in a water bath at 60-80°C and stir constantly, add the treated KH570 solution drop by drop into the ethanol slurry containing FF, stir for 2 hours, take out the FF in the slurry, Dry in an oven at °C for later use.

[0062] (2) Heat 20g FF in a muffle furnace for 26 hours at a temperature of 215°C; sinter the heated carbonized FF in a muffle furnace for 2 hours at a temperature of 400°C; heat the carbonized FF in a microwave oven for 2 hours, and adjust the temperature for the fire. Soak carbonized FF in 25% citric acid solution, soak for 24 hours, heat ...

Embodiment 2

[0066] A kind of HDPE / FF composite material that adds carbonized FF, its formula is:

[0067]

[0068] A kind of preparation method of adding the HDPE / FF composite material of charred FF, the step of its preparation method is:

[0069] (1) Prepare 90wt% ethanol aqueous solution, pour DL-411A into the ethanol solution, stir magnetically for 1 hour, and vibrate ultrasonically for 2 hours. Soak FF in ethanol for 1 h, add the treated DL-411A solution drop by drop into the ethanol slurry containing FF, stir for 2 h, take out the FF in the slurry, and dry it in an oven at 70°C for later use.

[0070] (2) Heat 20g FF in a muffle furnace for 26 hours at a temperature of 215°C; sinter the heated carbonized FF in a muffle furnace for 2 hours at a temperature of 400°C; heat the carbonized FF in a microwave oven for 2 hours, and adjust the temperature for the fire. Soak the carbonized FF in a citric acid solution with a concentration of 10-30%. After soaking for 24 hours, heat it wit...

Embodiment 3

[0074] A kind of HDPE / FF composite material that adds carbonized FF, its formula is:

[0075]

[0076] A kind of preparation method of adding the HDPE / FF composite material of charred FF, the steps of its preparation method are:

[0077] (1) Prepare 90wt% ethanol aqueous solution, pour NDZ-201 into the ethanol solution, stir magnetically for 1 hour, and vibrate ultrasonically for 2 hours. Soak FF in ethanol for 1 h, add the treated NDZ-201 solution drop by drop into the ethanol slurry containing FF, stir for 2 h, take out the FF in the slurry, and dry it in an oven at 70°C for later use.

[0078] (2) Heat 20g FF in a muffle furnace for 26 hours at a temperature of 215°C; sinter the heated carbonized FF in a muffle furnace for 2 hours at a temperature of 400°C; heat the carbonized FF in a microwave oven for 2 hours, and adjust the temperature for the fire. Soak the carbonized FF in a citric acid solution with a concentration of 10-30%. After soaking for 24 hours, heat it w...

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Abstract

The invention relates to a HDPE / FF (high density polyethylene / feather fiber) composite material added with carbonized FF (feather fiber) and a preparation method thereof, and in particular relates to the surface treatment of regeneration natural fiber, in addition, the natural fiber self is carbonized, and activated by an activator, and the modified natural fiber and a polymer material are compounded by melt blending; the activated modified carbonized FF is added into the high density polyethylene / feather fiber (HDPE / FF) composite material, the modified composite material retains the original excellent properties of the HDPE and the FF, and the toughness of the composite material is well enhanced, the possibility of actual industrial production of the composite material is provided; non-isothermal crystallization kinetics and relaxation behavior are studied, and a theoretical basis is provided for production of protein-like regeneration natural fiber / polymer composite materials.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, in particular adding carbonized natural fibers to protein regenerated natural fibers / polymer composite materials to enhance the mechanical properties of the composite materials. Background technique [0002] Fiber-reinforced polymer composites refer to a composite system composed of a reinforcement (regenerated natural fiber), a matrix (resin), and an interface between the two. The reinforcement plays the role of skeleton support, the matrix plays the role of connection, and the interface is used to transfer load. The most commonly used regenerated natural fibers are wood fibers and poultry wool fibers. The resin used as the matrix generally requires a relatively low melting point, which is convenient for processing. Thermoplastics such as high-density polyethylene (HDPE), polystyrene (PS), and polyvinyl chloride (PVC) are commonly used. [0003] Fiber-reinforced polymer resin materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L89/00C08K9/00C08K9/04C08K7/06D01F9/18D06M13/503D06M13/513D06M101/12
CPCC08L23/06C08L2205/16C08L2207/062D01F9/18D06M13/503D06M13/5135D06M2101/12C08L89/00C08K9/00C08K9/04C08K7/06
Inventor 沈惠玲赵梓年陈金彪
Owner TIANJIN UNIV OF SCI & TECH