CN109181335A - Whisker reinforcement composite material of plant fiber, and its preparation method and application - Google Patents
Whisker reinforcement composite material of plant fiber, and its preparation method and application Download PDFInfo
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- CN109181335A CN109181335A CN201810928592.1A CN201810928592A CN109181335A CN 109181335 A CN109181335 A CN 109181335A CN 201810928592 A CN201810928592 A CN 201810928592A CN 109181335 A CN109181335 A CN 109181335A
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- plant fiber
- whisker
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Life Sciences & Earth Sciences (AREA)
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The present invention relates to whisker reinforcement composite material of plant fiber, and its preparation method and application.The present invention is prepared by following composition by weight, and 40~60 parts of plant fiber powder, 10~15 parts of natural resin powder, 10~20 parts of gelatinized starch, 5~15 parts of calcium carbonate crystal whisker, 0.5~1 part of silane coupling agent.Calcium carbonate crystal whisker is made filler by the present invention, can Anticrack, acceleration shock energy dissipation is played the role of by interface plastic deformation, enhancing is achieved the purpose that with this.The present invention is modified calcium carbonate crystal whisker using silane coupling agent, modified silane coupling agent connection is coated on whisker surface, form clad, silane coupling agent has longer strand simultaneously, molecular entanglement easily occurs with resin, forms flexible interface layer, so that it is dispersed in resin to improve calcium carbonate crystal whisker, the interface compatibility between calcium carbonate crystal whisker and resin is improved, has achieved the purpose that the intensity for improving product.
Description
Technical field
The present invention relates to composite material of plant fiber field, more particularly, to be whisker reinforcement plant fiber composite wood
Material, and its preparation method and application.
Background technique
Plant fiber products made of rice hull cellulose or plant fiber, raw material all derive from the product of the Nature, tool
There is the features such as environmentally protective, organic fertilizer, back to nature can be voluntarily degraded into large nature, therefore there is wide city
Field prospect.
Plant-fiber product is generally adhesive by substrate, starch of plant fiber, and adds other processing aids and function
Energy auxiliary agent etc., passes through fast cooling after high temperature rapid shaping.It is fine that Chinese patent ZL201210151467.7 discloses a kind of rice husk
Synthetic resin powder is tieed up, rice husk is first ground into powdered rice hulls, is then placed in mixing machine, cellulose, starch and water is added and is uniformly mixed,
Then taking out cooling is in rice hull cellulose powder, and in addition natural resin and lignin are put into reaction kettle, water is added and stirs evenly
It is slurried, nano silica is then added and continues after stirring evenly cooling, adds rice hull cellulose powder and continues to stir, then cool down
After take out, pasty material is made, is then directly injected into flash dryer and rice hull cellulose synthetic resin powder is made.Pass through above-mentioned patent
Manufactured plant fiber products can be degradable, more environmentally-friendly, and its high temperature resistant, intensity, density and hardness performance are more all good,
It can satisfy the demands such as kitchen tools, tableware, toy, but its intensity still needs to be further increased, to increase it using model
It encloses.
Summary of the invention
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of whisker reinforcement composite material of plant fiber and its systems
Preparation Method and application.The whisker reinforcement plant fiber composite article, more general plant fiber resin compounded product have more excellent
Intensity.
To achieve the above object, the technical solution of the invention is as follows: the preparation of whisker reinforcement composite material of plant fiber
Method, comprising the following steps:
(1), ethyl alcohol/deionized water mixed liquor of 35-50wt% is prepared, and adjusts pH value to 4-5 with glacial acetic acid；It will mix
It closes liquid and is heated to 90-100 DEG C, silane coupling agent is added and hydrolyzes 5-10min；Calcium carbonate crystal whisker is added into mixed liquor and stirs equal
It is even, it is then dehydrated, is dry, being cooled to room temperature, obtaining modified calcium carbonate whisker.The present invention can also using as silicon carbide whisker,
Mullite crystal whisker, potassium titanate crystal whisker, aluminium borate whisker, ZnOw, magnesia crystal whisker, calcium sulfate crystal whiskers, magnesium salt whisker etc.
Ceramic whiskers, as reinforcing filler, but it is best with the effect of calcium carbonate crystal whisker.
(2), plant fiber powder, natural resin powder, gelatinized starch are placed in high-speed mixer and are uniformly mixed, took out 60
Mesh obtains plant fiber resin-oatmeal.
(3), plant fiber resin-oatmeal and modified calcium carbonate whisker are put into the ball mill for removing sphere and are uniformly mixed, obtained
To whisker reinforcement composite material of plant fiber.By the sphere removal in ball mill, the draw ratio that whisker can be effectively prevented is broken
It is bad, guarantee reinforcing effect.
The invention also discloses the formulas of whisker reinforcement composite material of plant fiber.Its prepared by following components by weight percent and
At: 40~60 parts of plant fiber powder, 10~15 parts of natural resin powder, 10~20 parts of gelatinized starch, 5~15 parts of calcium carbonate crystal whisker,
0.5~1 part of silane coupling agent.
Further, gelatinized starch be corn gelatinized starch, it is potato gelatinized starch, high straight-chain maize gelatinized starch, small
One of wheat gelatinized starch or a variety of mixing.
Further, the whisker length of calcium carbonate crystal whisker is 50~80 μm, and diameter is 0.5~1.2 μm, and aragonite content exists
98% or more.
Further, plant fiber be rice hull cellulose, Semen Tritici aestivi fiber, stalk fibre, wood-fibred, bamboo fibre, bast-fibre,
Sugarcane fibre it is one or more.
Further, natural resin powder is one of Arabic gum, shellac, amber or a variety of mixing.
Further, one of silane coupling agent KH-550, KH-560, KH-570 or a variety of mixing.
Further, the water content of plant fiber powder is 6-10wt%.
The invention also discloses the applications of whisker reinforcement composite material of plant fiber.The composite material can apply to manufacture and play
Tool, stationery, office furniture, tableware, kitchen tools, furniture.
By using above-mentioned technical solution, the beneficial effects of the present invention are: calcium carbonate crystal whisker is made filler by the present invention,
Carry out filling plant fiber resin composite material.When plant fiber resin compounded product is by energy impact, macroscopic view inside product
When crackle or micro-crack begin to diffuse into the microcell containing whisker, it is necessary to be pulled out, fracture or interfacial detachment could continue to expand
Exhibition.Therefore, the calcium carbonate crystal whisker as filler can Anticrack, acceleration shock is played by interface plastic deformation
The effect of energy dissipation achievees the purpose that enhancing with this.Using plant fiber composite article made of the present invention, more general plant
Fibre resin composite article, impact strength promote 30~40%.
The present invention is modified calcium carbonate crystal whisker with silane coupling agent, CaCO3The most CO in surface3 2-It can be by
Hydrolysis makes calcium carbonate crystal whisker surface contain hydroxyl, and modified silane coupling agent connects or be coated on whisker surface, forms cladding
Layer, and silane coupling agent has longer strand, and molecular entanglement easily occurs with resin, flexible interface layer is formed, to improve
Calcium carbonate crystal whisker is dispersed in resin, improves the interface compatibility between calcium carbonate crystal whisker and resin, has reached raising product
Intensity purpose.
Silane coupling agent hydrolysis can generate silanol structure, but silanol structure is easy to happen self-condensation reaction, stability
It is poor.Silane coupling agent is placed in ethyl alcohol/deionized water mixed liquor and hydrolyzed by the present invention, so that silanol structure has stabilization appropriate
Property, mixed liquor is deployed weakly acidic, then further ensures the stability of silanol structure.Through the above scheme, guarantee silanol
Stable structure and quantity is enough, therefore with the hydroxyl of substrate surface condensation reaction, remaining silanol can occur for part silanol structure
Condensation reaction then occurs with the silanol key on other silane molecules or forms hydrogen bond for key, passes through the knot of this covalent bond and hydrogen bond
It closes, silane is just attached to substrate surface, to play the role of to surface modification；And other organic functionals on silane molecule
Group will keep the chemical activity of subsequent reactions.
Specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment.
The number of following substance refers to parts by weight.
Embodiment 1
(1), ethyl alcohol/deionized water mixed liquor of 35wt% is prepared, and adjusts pH value to 5 with glacial acetic acid.By mixed liquor
95 DEG C are heated to, 0.5 part of KH-550 hydrolysis 5min is added.5 parts of calcium carbonate crystal whiskers are added, and into mixed liquor with 30r/min's
Speed stirs evenly.Finally, being dehydrated, being dry, being cooled to room temperature, modified calcium carbonate whisker is made, for use.Wherein, calcium carbonate is brilliant
The whisker length of palpus is 50-80 μm, and diameter is 0.5-1.2 μm, aragonite content 98%.
(2), it takes 40 parts of rice hull cellulose powder, 10 parts of Arabic gums, 15 parts of corn gelatinized starches to be placed in high-speed mixer to mix
It closes uniformly, further takes out and cross 60 meshes, obtain rice hull cellulose resin-oatmeal.Rice hull cellulose powder be by rice husk through high temperature sterilization, drying,
Broken, sieving is made, and water content 5wt%, partial size is greater than 50 mesh.
(3), the modified calcium carbonate whisker of the rice hull cellulose resin-oatmeal of step (2) and step (1) is put into and removes sphere
It is uniformly mixed in ball mill, obtains whisker reinforcement rice hull cellulose composite material.
Above-mentioned whisker reinforcement rice hull cellulose composite material is injected in mold and is molded, is taken after formed product
Out, product is then subjected to edging, polishing etc. and obtains spoon.The mould pressing process of the present embodiment is consistent with existing mould pressing process, area
It is not the control of temperature, time etc., therefore does not repeat further herein.
Embodiment 2
(1), ethyl alcohol/deionized water mixed liquor of 50wt% is prepared, and adjusts pH value to 4 with glacial acetic acid.By mixed liquor
100 DEG C are heated to, 1 part of KH-570 hydrolysis 8min is added.10 parts of calcium carbonate crystal whiskers are added, and into mixed liquor with 50r/min's
Speed stirs evenly.Finally, being dehydrated, being dry, being cooled to room temperature, modified calcium carbonate whisker is made, for use.Wherein, calcium carbonate is brilliant
The whisker length of palpus is 50-80 μm, and diameter is 0.5-1.2 μm, aragonite content 98.5%.
(2), 60 parts of rice hull cellulose powder, 12 parts of Arabic gums, 18 parts of high straight-chain maize gelatinized starches is taken to be placed in high-speed stirred
It is uniformly mixed in machine, further takes out and cross 60 meshes, obtain rice hull cellulose resin-oatmeal.Rice hull cellulose powder is to be killed by rice husk through high temperature
Bacterium, drying, broken, sieving are made, and water content 6wt%, partial size is greater than 60 mesh.
(3), the modified calcium carbonate whisker of the rice hull cellulose resin-oatmeal of step (2) and step (1) is put into and removes sphere
It is uniformly mixed in ball mill, obtains whisker reinforcement rice hull cellulose composite material.
Above-mentioned whisker reinforcement rice hull cellulose composite material is injected in mold and is molded, is taken after formed product
Out, product is then subjected to edging, polishing etc. and obtains chopping block.
Embodiment 3
(1), ethyl alcohol/deionized water mixed liquor of 40wt% is prepared, and adjusts pH value to 5 with glacial acetic acid.By mixed liquor
90 DEG C are heated to, 1 part of KH-560 hydrolysis 10min is added.15 parts of calcium carbonate crystal whiskers are added, and into mixed liquor with 40r/min's
Speed stirs evenly.Finally, being dehydrated, being dry, being cooled to room temperature, modified calcium carbonate whisker is made, for use.Wherein, calcium carbonate is brilliant
The whisker length of palpus is 50-80 μm, and diameter is 0.5-1.2 μm, aragonite content 98.5%.
(2), 50 parts of stalk fibre powder, 12 parts of Arabic gums, 18 parts of high straight-chain maize gelatinized starches is taken to be placed in high-speed stirred
It is uniformly mixed in machine, further takes out and cross 60 meshes, obtain stalk fibre resin-oatmeal.Stalk fibre powder is to be killed by stalk through high temperature
Bacterium, drying, broken, sieving are made, and water content 6wt%, partial size is greater than 60 mesh.
(3), the modified calcium carbonate whisker of the stalk fibre resin-oatmeal of step (2) and step (1) is put into and removes sphere
It is uniformly mixed in ball mill, obtains whisker reinforcement stalk fibrous composite.
Above-mentioned whisker reinforcement stalk fibrous composite is injected in mold and is molded, is taken after formed product
Out, product is then subjected to edging, polishing etc. and obtains backing plate.
Embodiment 4
(1), ethyl alcohol/deionized water mixed liquor of 45wt% is prepared, and adjusts pH value to 5 with glacial acetic acid.By mixed liquor
95 DEG C are heated to, 0.8 part of KH-570 hydrolysis 8min is added.9 parts of calcium carbonate crystal whiskers are added, and into mixed liquor with 40r/min's
Speed stirs evenly.Finally, being dehydrated, being dry, being cooled to room temperature, modified calcium carbonate whisker is made, for use.Wherein, calcium carbonate is brilliant
The whisker length of palpus is 50-80 μm, and diameter is 0.5-1.2 μm, aragonite content 98%.
(2), 45 parts of rice hull cellulose powder, 10 parts of shellac, 15 parts of corn gelatinized starches are taken to be placed in mixing in high-speed mixer equal
It is even, 55 meshes are further taken out and crossed, rice hull cellulose resin-oatmeal is obtained.Rice hull cellulose powder is by rice husk through high temperature sterilization, drying, broken
Broken, sieving is made, and water content 5wt%, partial size is greater than 60 mesh.
(3), the modified calcium carbonate whisker of the rice hull cellulose resin-oatmeal of step (2) and step (1) 1 is put into and removes sphere
It is uniformly mixed in ball mill, obtains whisker reinforcement rice hull cellulose composite material.
Above-mentioned whisker reinforcement rice hull cellulose composite material is injected in mold and is molded, is taken after formed product
Out, product is then subjected to edging, polishing etc. and obtains ruler.
Embodiment 5
(1), ethyl alcohol/deionized water mixed liquor of 40wt% is prepared, and adjusts pH value to 4 with glacial acetic acid.By mixed liquor
100 DEG C are heated to, 0.9 part of KH-550 hydrolysis 10min is added.15 parts of calcium carbonate crystal whiskers are added, and into mixed liquor with 40r/min
Speed stir evenly.Finally, being dehydrated, being dry, being cooled to room temperature, modified calcium carbonate whisker is made, for use.Wherein, calcium carbonate
The whisker length of whisker is 50-80 μm, and diameter is 0.5-1.2 μm, aragonite content 99%.
(2), it takes 60 parts of bamboo fibre powder, 15 parts of ambers, 20 parts of corn gelatinized starches to be placed in high-speed mixer to be uniformly mixed,
55 meshes are further taken out and crossed, bamboo fibre resin-oatmeal is obtained.Bamboo fibre powder is to be made by bamboo scraps through high temperature sterilization, drying, broken, sieving
, water content 5wt%, partial size is greater than 60 mesh.
(3), the modified calcium carbonate whisker of the bamboo fibre resin-oatmeal of step (2) and step (1) 1 is put into the ball for removing sphere
It is uniformly mixed in grinding machine, obtains whisker reinforcement bamboo fiber composite material.
Above-mentioned whisker reinforcement bamboo fiber composite material is injected in mold and is molded, is drawn off after formed product,
Then product is subjected to edging, polishing etc. and obtains desktop.
Above-described, only presently preferred embodiments of the present invention cannot limit the scope of implementation of the present invention, it is all according to
Equivalent change made by scope of the present invention patent and decoration, should still belong in the range of the present invention covers.
Claims (9)
1. the preparation method of whisker reinforcement composite material of plant fiber, which comprises the following steps:
(1), ethyl alcohol/deionized water mixed liquor of 35-50wt% is prepared, and adjusts pH value to 4-5 with glacial acetic acid；By mixed liquor
It is heated to 90-100 DEG C, silane coupling agent is added and hydrolyzes 5-10min；Calcium carbonate crystal whisker is added into mixed liquor and stirs evenly,
Then it is dehydrated, is dry, being cooled to room temperature, obtaining modified calcium carbonate whisker；
(2), plant fiber powder, natural resin powder, gelatinized starch are placed in high-speed mixer and are uniformly mixed, took out 60 mesh
Sieve, obtains plant fiber resin-oatmeal；
(3), plant fiber resin-oatmeal and modified calcium carbonate whisker are put into the ball mill for removing sphere and are uniformly mixed, obtain crystalline substance
It must enhancing composite material of plant fiber.
2. a kind of whisker reinforcement composite material of plant fiber, which is characterized in that by following composition by weight and according to claim 1 institute
It states preparation method to be prepared, 40~60 parts of plant fiber powder, 10~15 parts of natural resin powder, 10~20 parts of gelatinized starch, carbon
5~15 parts of sour calcium pyroborate, 0.5~1 part of silane coupling agent.
3. whisker reinforcement composite material of plant fiber according to claim 2, which is characterized in that gelatinized starch is corn gelatinization
One of starch, potato gelatinized starch, high straight-chain maize gelatinized starch, wheat gelatinized starch or a variety of mixing.
4. whisker reinforcement composite material of plant fiber according to claim 2, which is characterized in that the whisker of calcium carbonate crystal whisker is long
Degree is 50~80 μm, and diameter is 0.5~1.2 μm, and aragonite content is 98% or more.
5. whisker reinforcement composite material of plant fiber according to claim 2, which is characterized in that plant fiber is rice husk fibre
Dimension, Semen Tritici aestivi fiber, stalk fibre, wood-fibred, bamboo fibre, bast-fibre, sugarcane fibre it is one or more.
6. whisker reinforcement composite material of plant fiber according to claim 2, which is characterized in that natural resin powder is Arab
One of glue, shellac, amber or a variety of mixing.
7. whisker reinforcement composite material of plant fiber according to claim 2, which is characterized in that silane coupling agent KH-
550, one of KH-560, KH-570 or a variety of mixing.
8. whisker reinforcement composite material of plant fiber according to claim 2, which is characterized in that the water content of plant fiber powder
For 6-10wt%.
9. the application of any one of the claim 2-8 whisker reinforcement composite material of plant fiber, which is characterized in that for manufacturing
Toy, stationery, office furniture, tableware, kitchen tools, furniture.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112662108A (en) * | 2020-12-23 | 2021-04-16 | 安徽绿之态新材料有限公司 | Whisker reinforced straw fiber environment-friendly furniture material and furniture |
| CN114249923A (en) * | 2020-09-23 | 2022-03-29 | 精工爱普生株式会社 | Fiber structure and apparatus for producing fiber structure |
| CN115785691A (en) * | 2022-12-14 | 2023-03-14 | 广东华凯科技股份有限公司 | Low-VOC (volatile organic compound) special fiber material as well as preparation method and application thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114249923A (en) * | 2020-09-23 | 2022-03-29 | 精工爱普生株式会社 | Fiber structure and apparatus for producing fiber structure |
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| CN115785691A (en) * | 2022-12-14 | 2023-03-14 | 广东华凯科技股份有限公司 | Low-VOC (volatile organic compound) special fiber material as well as preparation method and application thereof |
| CN115785691B (en) * | 2022-12-14 | 2024-02-23 | 广东华凯科技股份有限公司 | Low-VOC special fiber material and preparation method and application thereof |
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