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Antibacterial decorative material made by utilizing cotton stalk and preparation method thereof

A decorative material and cotton stalk technology, applied in the field of comprehensive utilization of crop by-products, can solve the problems of decreased crystallinity, difficult flow, poor compatibility, etc., and achieve the effects of saving dosage, protecting forest resources and improving strength

Inactive Publication Date: 2010-10-27
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at technical problems such as the poor compatibility between straw and synthetic polymers and the difficulty in the flow of straw in the twin-screw extrusion process, a specific single-screw extrusion technology is adopted to expand the straw, so that the crystallinity of the straw fiber decreases and the surface area increases, which is beneficial to Surface modification of straw, and through the optimization and improvement of various processing aids, as well as the optimization of production process conditions, to prepare decorative materials with high straw content and high cost performance

Method used

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  • Antibacterial decorative material made by utilizing cotton stalk and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 1.3kg of 50nm nano-titanium dioxide (commodity purchased from China National Nano Engineering Center) and 1kg of liquid paraffin, and mix them evenly in a stainless steel container. Mix the nano-titanium dioxide and liquid paraffin and put it into a sonicator (1400W, 180S) to fully disperse the nano-titanium dioxide. Weigh 100 kg of cotton stalk powder 150 mesh sieve through pulverization with a water content of 15%, pour it into a high-speed mixer (500 rpm at 100°C), stir and heat to remove water until the water content is 5%, Add 1 kilogram of silane and modify the cotton stalk powder for 12 minutes to obtain the modified product modified cotton stalk powder; then add polyethylene 20kg and talcum powder 4 1 kg, 2 kg of ethylene acrylate polymer, 2 kg of zinc stearate and 1 kg of blowing agent azodicarbonamide, placed in a high-speed mixer (500 rpm), at 120 ° C, mixed for 10 minutes, Extrude the obtained mixed material in a twin-screw extruder, and the heating t...

Embodiment 2

[0035]With reference to the technical conditions and technical parameters of Example 1, weigh 1.3kg of 50nm nano-titanium dioxide (purchased from China National Nano Engineering Center, commodity) and 1kg of liquid paraffin, and mix it in a stainless steel container; Titanium dioxide and liquid paraffin are mixed and put into the sonicator to fully disperse the nano-titanium dioxide; weighing 100 kg of cotton stalk powder with a water content of 15% and passing through a 150 mesh sieve is poured into a high-speed mixer at 100 ° C. Stirring and heating to remove water until the water content reaches 5%, adding 2 kg of silane to modify the cotton stalk powder for 12 minutes to obtain a modified product modified cotton stalk powder. Then add polyethylene 20kg in the high-speed mixer successively, 4 kilograms of talcum powders, 2 kilograms of ethylene acrylate polymers, 2 kilograms of zinc stearates and 1 kilogram of blowing agent azodicarbonamide, place in the high-speed mixer, M...

Embodiment 3

[0037] With reference to the conditions and technical parameters of Example 1, weigh 50nm nano-titanium dioxide (purchased from China National Nano Engineering Center, commodity) 1.3kg and 1kg of liquid paraffin, and mix it in a stainless steel container; After mixing with liquid paraffin, put it into an ultrasonic instrument to fully disperse the nano-titanium dioxide; weigh 100 kg of pulverized cotton stalk powder with a water content of 15% and pass through a 150 mesh sieve, pour it into a high-speed mixer at 100 ° C, and stir Heat to remove water until the water content is 5%, add 1.5 kg of silane to modify the cotton stalk powder for 12 minutes to obtain a modified product modified cotton stalk powder. Then add polyethylene 20kg in the high-speed mixer successively, 4 kilograms of talcum powders, 2 kilograms of ethylene acrylate polymers, 2 kilograms of zinc stearates and 1 kilogram of blowing agent azodicarbonamide, place in the high-speed mixer, Mix at 120°C for 10 minu...

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Abstract

The invention belongs to the technical field of preparing domestic decorative material by utilizing cotton stalk. Concretely, the invention relates to the steps that nano titanium dioxide with photocatalyst effect is utilized to carry out modification treatment on cotton stalk, double screw one-step extrusion moulding process is adopted, and cotton stalk decorative material is produced. The invention also relates to a method for preparing the material. Double screw extrusion one-step moulding process is adopted. The domestic decorative material with environmental protection and antibacterial characteristics is prepared by components of cotton stalk powder, nano titanium dioxide, silane, fluid wax, polyethylene, azodicarbonamide, talcum powder, zinc stearate and ethylene acrylate polymer. The invention also discloses a preparation method of the material. The decorative material made by the invention is detected by Hubei Station for Quality Supervision and Inspection of Forest Product, the main technical indexes thereof are that bending strength is 27.3MPa and elastic modulus is 1747MPa. The product of the invention can completely substitute wood product, thus contributing to saving of wood usage amount and protection of forest resources.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of crop by-products, and relates to the field of preparing decorative materials from crop straws. Specifically, the invention relates to modifying cotton stalks by using nano-titanium dioxide with photocatalyst effect, and adopting twin-screw one-time extrusion molding process to produce cotton stalk decoration materials. The invention also relates to methods of preparing the material. Background technique [0002] There are more than 700 million tons of crop straw produced in my country every year, and more than 600 million tons are available for use. In addition to being partially used for returning to the field, feed and utilization as living energy, more than 50% of the straw has not been developed and utilized, and farmers generally burn them as waste, which not only causes waste of resources, but also seriously pollutes the environment; on the other hand, China is a countr...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/06C08L23/08C08L33/08C08K13/06C08K9/04C08K3/22C08K5/23C08K3/34C08K5/098B29C47/92B29C48/92
CPCB29C48/92B29C48/875B29C2948/92514B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 熊汉国蔡中华和平生熊舟翼谭军丁士勇潘华刘淼蔡杰
Owner HUAZHONG AGRI UNIV
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