CN109251415A - A kind of preparation method of natural fibre reinforced degradable PP lunch box - Google Patents
A kind of preparation method of natural fibre reinforced degradable PP lunch box Download PDFInfo
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- CN109251415A CN109251415A CN201811086003.6A CN201811086003A CN109251415A CN 109251415 A CN109251415 A CN 109251415A CN 201811086003 A CN201811086003 A CN 201811086003A CN 109251415 A CN109251415 A CN 109251415A
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- sugarcane
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the preparations and application technology of the new functional macromolecule material of high molecular material in new material, are related to modified plastics technical field, specifically a kind of preparation method of natural fibre reinforced degradable PP lunch box.The present invention utilizes the sugarcane nanofiber that reinforcing is prepared after crushing, high speed shear and citric acid immersion treatment first using natural sugar cane as raw material；Then nano-titanium dioxide is prepared using reaction under high pressure method to be added in plastics, polyacrylic decomposition efficiency can be significantly improved；It is put into mold, is molded after finally mixing polypropylene, nano silica, natural, nano-titanium dioxide, nanometer sugarcane fibre, it is cooling, natural fibre reinforced degradable PP lunch box is prepared after disinfection.Through the PP lunch box that is prepared of the present invention, not only toughness is strong, and shock resistance and wear-resisting property are excellent but also be easy to degrade.
Description
Technical field
The invention belongs to the preparations and application technology of the new functional macromolecule material of high molecular material in new material, are related to
Modified plastics technical field, specifically a kind of preparation method of natural fibre reinforced degradable PP lunch box.
Background technique
Polypropylene (PP) is superior to polyethylene as most light one of plastics, surrender, stretching and compressive strength and hardness,
Rigidity and heat resistance are good, are widely applied in preparing the packaging materials such as plastic lunch box.However, being shunk since PP has
Rate is big, poor toughness and erosion-resisting characteristics is low, wearability is not high and difficult for biological degradation and makes its hydrophily due to a lack of polarity under low temperature
The disadvantages of constrain the expansion of PP application field significantly.
With the development of society and the promotion of environmental consciousness, while guaranteeing the use value of lunch box, exploitation biology
Degredation plastic lunch box has great importance to the protection of environment.
Summary of the invention
In order to adapt to market biodegradable lunch box demand, the use value of PP is improved, is overcome the shortcomings of in PP performance, originally
Invention provides a kind of preparation method of natural fibre reinforced degradable PP lunch box.
In order to achieve the above objectives.The present invention will use following technology: a kind of natural fibre reinforced degradable PP lunch box
Preparation method, which comprises the following steps:
(1) it by after the peeling of the sugarcane after juicing, is obtained after being dried in vacuo 20-24h under the conditions of 80-90 DEG C after sugarcane fibre is shredded
Bagasse；
(2) sugarcane powder is obtained after bagasse obtained in step (1) being smashed it through 60 meshes, disperses steaming for sugarcane powder
In distilled water, lemon is added into dispersion liquid after high speed shear 10-15min under the conditions of 10000-12000rpm using high shear instrument
After acid and sodium citrate, after impregnating 2-4h under the conditions of 40-60 DEG C, sugarcane fibre and true under the conditions of 80-90 DEG C is filtered out
Nanometer sugarcane fibre is obtained after the dry 20-24h of sky；
(3) oleic acid, petroleum ether and water are formed into two phase liquid after mixing, under the conditions of 300-500rpm, into the solution
After being slowly added to butyl titanate, continues after stirring 20-40 min, transfer the solution into autoclave, at 200-300 DEG C
Under the conditions of react 6 h after, solution to be mixed is cooled to after room temperature discard supernatant liquor after, by lower layer's solution, that the solid was filtered is heavy
It forms sediment, obtains nano-titanium dioxide after 20-24h will be dried in vacuo after washing of precipitate 3-5 times, under the conditions of 50-70 DEG C with ethyl alcohol；
(4) polypropylene, nano silica, natural, nano-titanium dioxide, nanometer sugarcane fibre are uniformly mixed
Afterwards, heating fusing, the mixture after fusing is put into mold, after injection molding, natural fibre is prepared in natural cooling after disinfection
Tie up the degradable PP lunch box strengthened.
Preferably, the size of bagasse as described in step (1) is not more than 0.5cm × 0.5cm × 0.5cm.
Preferably, the mass volume ratio of sugarcane powder described in step (2) and distilled water is 1:20-50；The lemon
Citric acid, sodium citrate concentration are respectively 0.15g/mL and 0.2g/mL in mixed solution after lemon acid, sodium citrate are added.
Preferably, volume ratio when oleic acid described in step (3), petroleum ether are mixed with water is 1:3-4:5-10.
Preferably, the additional amount of butyl titanate described in step (3) is the 5-10% of mixed solution gross mass；Described
Nano-titanium dioxide partial size is not more than 50nm.
Preferably, natural described in step (4) is that vitamin E, gallic acid and tea polyphenols press 1:
The mixing natural formed after 0.5-2:0.5-2 mixing.
Preferably, polypropylene described in step (4), nano silica, natural, nano-titanium dioxide,
Nanometer sugarcane fibre mixing when each component mass fraction successively are as follows: 85-95 parts, 3-5 parts, 0.5-2 parts, 0.2-0.5 parts, 5-15
Part；The temperature of the fusing is 180-220 DEG C.
In addition, natural fibre reinforced degradable PP lunch box of the invention, as prepared by above-mentioned preparation method.
Compared with prior art, the preparation method of the natural fibre reinforced degradable PP lunch box of one kind of the present invention has
Below the utility model has the advantages that using natural sugar cane as fibrous raw material, as the filler of polypropylene plastics after being crushed and being modified,
The toughness of plastic lunch box is significantly improved using the toughness of fiber；Nano-titanium dioxide is prepared using thermal response method to be added
Into plastics, polyacrylic decomposition efficiency can be significantly improved, avoids white pollution caused by its plastic lunch box；Furthermore in plastics meal
Nano silica is added in the formula of box can significantly improve the shock resistance and wearability of lunch box.It is made through the present invention
Not only toughness is strong for standby obtained PP lunch box, and shock resistance and wear-resisting property are excellent but also be easy to degrade.
Specific embodiment
[embodiment 1]
A kind of preparation method of natural fibre reinforced degradable PP lunch box, which comprises the following steps:
(1) by after the peeling of the sugarcane after juicing, size is obtained to obtain after being dried in vacuo 20h under the conditions of 90 DEG C after sugarcane fibre is shredded
No more than 0.5cm × 0.5cm × 0.5cm bagasse；
(2) sugarcane powder is obtained after bagasse obtained in step (1) being smashed it through 60 meshes, cane powder and distilled water are pressed
1:30 mass volume ratio mixing after, using high speed shear instrument under the conditions of 12000rpm after high speed shear 10min to dispersion liquid
After making citric acid, sodium citrate concentration be respectively 0.15g/mL and 0.2g/mL after middle addition citric acid and sodium citrate,
After impregnating 3h under the conditions of 50 DEG C, filtering obtains sugarcane fibre and obtains nanometer sugarcane after being dried in vacuo 20h under the conditions of 90 DEG C
Fiber；
(3) oleic acid, petroleum ether and water are formed into two phase liquid by the volume ratio of 1:1:1 after mixing, under the conditions of 400rpm,
After being slowly added to 6% butyl titanate into solution, continues after stirring 30 min, transfer the solution into autoclave,
After reacting 6 h under the conditions of 250 DEG C, solution to be mixed is cooled to after room temperature discard supernatant liquor after, lower layer's solution is filtered solid
Body precipitating obtains nano-titanium dioxide after being dried in vacuo 20h after washing of precipitate 4 times, under the conditions of 60 DEG C with ethyl alcohol；
(4) 87.7 parts of polypropylene, 3 parts of nano silicas, 1 part of natural, 0.3 part of nano-titanium dioxide, 8 parts are received
Rice sugarcane fibre after mixing, melts under the conditions of 180-220 DEG C, the mixture after fusing is put into mold, is molded
Afterwards, natural fibre reinforced degradable PP lunch box is prepared in natural cooling after disinfection.
[embodiment 2]
A kind of preparation method of natural fibre reinforced degradable PP lunch box, which comprises the following steps:
(1) by after the peeling of the sugarcane after juicing, size is obtained to obtain after being dried in vacuo 22h under the conditions of 85 DEG C after sugarcane fibre is shredded
No more than 0.5cm × 0.5cm × 0.5cm bagasse；
(2) sugarcane powder is obtained after bagasse obtained in step (1) being smashed it through 60 meshes, cane powder and distilled water are pressed
1:35 mass volume ratio mixing after, using high speed shear instrument under the conditions of 11000rpm after high speed shear 10min to dispersion liquid
After making citric acid, sodium citrate concentration be respectively 0.15g/mL and 0.2g/mL after middle addition citric acid and sodium citrate,
After impregnating 2.5h under the conditions of 60 DEG C, filters out sugarcane fibre and be dried in vacuo get Na meter Gan after 20h under the conditions of 90 DEG C
Sugarcane fiber；
(3) oleic acid, petroleum ether and water are formed into two phase liquid by the volume ratio of 1:0.5:1 after mixing, in 500rpm condition
Under, after 7% butyl titanate is slowly added into solution, continues after stirring 30 min, transfers the solution into autoclave,
After reacting 6 h under the conditions of 280 DEG C, solution to be mixed is cooled to after room temperature discard supernatant liquor after, lower layer's solution is filtered
Solid precipitating obtains nano-titanium dioxide after being dried in vacuo 20h after washing of precipitate 5 times, under the conditions of 70 DEG C with ethyl alcohol；
(4) by 91.2 parts of polypropylene, 3 parts of nano silicas, 0.5 part of natural, 0.3 part of nano-titanium dioxide, 5 parts
Nanometer sugarcane fibre after mixing, melts under the conditions of 180-220 DEG C, the mixture after fusing is put into mold, infuses
After modeling, natural fibre reinforced degradable PP lunch box is prepared in natural cooling after disinfection.
[embodiment 3]
A kind of preparation method of natural fibre reinforced degradable PP lunch box, which comprises the following steps:
(1) it by after the peeling of the sugarcane after juicing, is dried in vacuo under the conditions of 80 DEG C after sugarcane fibre is shredded and obtains to obtain size afterwards for 24 hours
No more than 0.5cm × 0.5cm × 0.5cm bagasse；
(2) sugarcane powder is obtained after bagasse obtained in step (1) being smashed it through 60 meshes, cane powder and distilled water are pressed
1:40 mass volume ratio mixing after, using high speed shear instrument under the conditions of 12000rpm after high speed shear 10min to dispersion liquid
After making citric acid, sodium citrate concentration be respectively 0.15g/mL and 0.2g/mL after middle addition citric acid and sodium citrate,
Under the conditions of 60 DEG C impregnate 3h after, filter out sugarcane fibre and be dried in vacuo under the conditions of 90 DEG C for 24 hours afterwards obtain nanometer sugarcane
Fiber；
(3) oleic acid, petroleum ether and water are formed into two phase liquid by the volume ratio of 1:1:2 after mixing, under the conditions of 400rpm,
After being slowly added to 6% butyl titanate into solution, continues after stirring 30 min, transfer the solution into autoclave,
After reacting 6 h under the conditions of 250 DEG C, solution to be mixed is cooled to after room temperature discard supernatant liquor after, lower layer's solution is filtered solid
Body precipitating, after washing of precipitate 5 times, will be dried in vacuo under the conditions of 70 DEG C with ethyl alcohol and obtains nano-titanium dioxide afterwards for 24 hours；
(4) by 85.8 parts of polypropylene, 3 parts of nano silicas, 1 part of natural, 0.2 part of nano-titanium dioxide, 10 parts
Nanometer sugarcane fibre after mixing, melts under the conditions of 180-220 DEG C, the mixture after fusing is put into mold, infuses
After modeling, natural fibre reinforced degradable PP lunch box is prepared in natural cooling after disinfection.
For the ordinary skill in the art, specific embodiment is only exemplarily described the present invention,
Obviously the present invention specific implementation is not subject to the restrictions described above, as long as use the inventive concept and technical scheme of the present invention into
The improvement of capable various unsubstantialities, or not improved the conception and technical scheme of the invention are directly applied to other occasions
, it is within the scope of the present invention.
Claims (8)
1. a kind of preparation method of natural fibre reinforced degradable PP lunch box, which comprises the following steps:
(1) it by after the peeling of the sugarcane after juicing, is obtained after being dried in vacuo 20-24h under the conditions of 80-90 DEG C after sugarcane fibre is shredded
Bagasse；
(2) sugarcane powder is obtained after bagasse obtained in step (1) being smashed it through 60 meshes, disperses steaming for sugarcane powder
In distilled water, lemon is added into dispersion liquid after high speed shear 10-15min under the conditions of 10000-12000rpm using high shear instrument
After acid and sodium citrate, after impregnating 2-4h under the conditions of 40-60 DEG C, sugarcane fibre and true under the conditions of 80-90 DEG C is filtered out
Nanometer sugarcane fibre is obtained after the dry 20-24h of sky；
(3) oleic acid, petroleum ether and water are formed into two phase liquid after mixing, under the conditions of 300-500rpm, into the solution
After being slowly added to butyl titanate, continues after stirring 20-40 min, transfer the solution into autoclave, in 200-300 DEG C of item
After reacting 6 h under part, solution to be mixed is cooled to after room temperature discard supernatant liquor after, by lower layer's solution the solid was filtered precipitating,
Nano-titanium dioxide is obtained after 20-24h will be dried in vacuo after washing of precipitate 3-5 times, under the conditions of 50-70 DEG C with ethyl alcohol；
(4) polypropylene, nano silica, natural, nano-titanium dioxide, nanometer sugarcane fibre are uniformly mixed
Afterwards, heating fusing, the mixture after fusing is put into mold, after injection molding, natural fibre is prepared in natural cooling after disinfection
Tie up the degradable PP lunch box strengthened.
2. the preparation method of the natural fibre reinforced degradable PP lunch box of one kind according to claim 1, which is characterized in that
The size of bagasse as described in step (1) is not more than 0.5cm × 0.5cm × 0.5cm.
3. the preparation method of the natural fibre reinforced degradable PP lunch box of one kind according to claim 1 or 2, feature exist
In the mass volume ratio of sugarcane powder described in step (2) and distilled water is 1:20-50；The citric acid, sodium citrate
Citric acid, sodium citrate concentration are respectively 0.15g/mL and 0.2g/mL in mixed solution after addition.
4. the natural fibre reinforced degradable PP lunch box and preparation method thereof of one kind according to claim 1, feature exists
In volume ratio when oleic acid described in step (3), petroleum ether are mixed with water is 1:3-4:5-10.
5. the natural fibre reinforced degradable PP lunch box and preparation method thereof of one kind according to claim 1, feature exists
In the additional amount of butyl titanate described in step (3) is the 5-10% of mixed solution gross mass；The nano-titanium dioxide
Partial size is not more than 50nm.
6. the natural fibre reinforced degradable PP lunch box and preparation method thereof of one kind according to claim 1, feature exists
In natural described in step (4) is that vitamin E, gallic acid and tea polyphenols are mixed by 1:0.5-2:0.5-2
The mixing natural formed afterwards.
7. the natural fibre reinforced degradable PP lunch box and preparation method thereof of one kind according to claim 1, feature exists
In polypropylene described in step (4), nano silica, natural, nano-titanium dioxide, nanometer sugarcane fibre
The mass fraction of each component is successively when mixing are as follows: 85-95 parts, 3-5 parts, 0.5-2 parts, 0.2-0.5 parts, 5-15 parts；The fusing
Temperature be 180-220 DEG C.
8. a kind of natural fibre reinforced degradable PP lunch box, the preparation side as described in -7 any one according to claim 1
Prepared by method.
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| CN201811086003.6A CN109251415A (en) | 2018-09-18 | 2018-09-18 | A kind of preparation method of natural fibre reinforced degradable PP lunch box |
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| CN201811086003.6A CN109251415A (en) | 2018-09-18 | 2018-09-18 | A kind of preparation method of natural fibre reinforced degradable PP lunch box |
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| US20150119502A1 (en) * | 2012-04-03 | 2015-04-30 | Lg Hausys, Ltd. | Wood plastic composites and manufacturing method thereof |
| CN106317932A (en) * | 2016-08-26 | 2017-01-11 | 桐城市中汇塑业有限公司 | Wood-fiber-reinforced polypropylene composite and preparation method thereof |
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