CN101914298A - Method for preparing bamboo fiber composite plastic particles and application of product thereof - Google Patents
Method for preparing bamboo fiber composite plastic particles and application of product thereof Download PDFInfo
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- CN101914298A CN101914298A CN 201010246825 CN201010246825A CN101914298A CN 101914298 A CN101914298 A CN 101914298A CN 201010246825 CN201010246825 CN 201010246825 CN 201010246825 A CN201010246825 A CN 201010246825A CN 101914298 A CN101914298 A CN 101914298A
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Abstract
The invention provides a method for preparing bamboo fiber composite plastic particles. The plastic particles are prepared by mixing bamboo fibers treated by a surfactant, a plastic raw material, an auxiliary agent and the like uniformly, and the plastic particles are used as a raw material for further processing a plastic product. The plastic particles prepared by the method for preparing the bamboo fiber composite plastic particles have good compatibility and high strength.
Description
Technical field
The present invention relates to the composite plastic field, be specifically related to a kind of preparation method of bamboo fiber composite plastic particles.
Background technology
Process quilt widespread use matrix material industry with fibre reinforced plastics.As with glass fibre and carbon fiber reinforced Resins, epoxy, use xylon enhanced composite sheet etc.Along with the understanding of people to environmental protection, a large amount of other plant fibers such as bamboo fibers, draft fiber all can be used to make matrix material.Bamboo fibers is because its intensity is good, and processing is simple, and the source is abundant, progressively is subjected to industrial attention.Present having is used for yarn fabric etc. with bamboo fibers, forms business-like fiber production.
Thermoplastic material such as polyvinyl chloride (Polyvinylchlorid, PVC), polypropylene (PP), polyethylene (polyethylene, PE), (ABS is a kind of blend to ABS, it is acrylonitrile-butadiene-styrene copolymer, English name Acrylonitrile-butadiene-styrene is called for short ABS), the processing of PVDF (the PVDF resin mainly is meant the multipolymer of vinylidene fluoride homopolymer or vinylidene and other a small amount of fluorine-containing vinyl monomers) extrusion molding is the primary process that plastic component is made.The plastic pellet of Compound Machining that arrives commonly used in the course of processing.Except plastic body, also have various additives such as toughener, softening agent, surface treatment agent, coupling agent, antioxidant etc.
Bamboo fibers becomes in the plastic pellet process with the thermoplastic material Compound Machining, and the physics-chem characteristic of two kinds of materials should be able to be compatible.Compatible can also can the employing in addition to add compatible coupling agent by to the modification of plastic material or to the modification of bamboo fibers or use both means and realize.Can not be too short or long in order to reach certain intensity bamboo fibers, the intensity of too short fiber such as its product of bamboo powder and draw high performance than macrofiber a little less than, differ greatly as the processing characteristics and the plastic raw materials of long its product of fruit fiber.
Therefore, how to prepare the fiber composite plastic material compatible good, that intensity is high, especially the bamboo fiber composite plastic particles as raw material need adopt special manufacture method.
Summary of the invention
The preparation method who the objective of the invention is to solve the deficiencies in the prior art part and the bamboo fiber composite plastic particles that a kind of compatibility is good, intensity is high is provided.
Purpose of the present invention can realize by following technical measures: a kind of preparation method of bamboo fiber composite plastic particles, this method comprises the steps:
(1) bamboo fibers is carried out surface modification treatment, the surface-modifying agent of employing is thermally-stabilised cationic surfactant;
(2) bamboo fibers after the modification is mixed with plastic substrate, auxiliary agent;
(3) mixture extrusion molding, the granulation that step (2) is obtained makes product.
The heat-staple decomposition temperature that is defined as will be higher than the plastic working temperature.Cationic surfactant with this understanding all can be used as surface-modifying agent.
The present invention adopts the bamboo fibers of handling through tensio-active agent even with auxiliary agent high-speed mixing such as plastic raw materials, lubricant, antioxidant, softening agent, and the employing screw extrusion press is made plastic pellet, as the starting material that further are processed as plastics.
Bamboo fibers is from all kinds of bamboo woods.Different with the bamboo powder, bamboo fibers is through having removed most of xylogen after the processing, polysaccharide, protein, materials such as vinifera palm oil have a certain-length filamentary material.Because Mierocrystalline cellulose is a polar material, most of plastics such as PP, PE, PVDF are apolar substance, mutual is compatible very poor.The bamboo fibers surface has in a large number-the OH group, and general Zeta potential approaches zero, is often adsorbing one deck water molecules securely.
Bamboo fibers becomes in the plastic pellet process with the thermoplastic material Compound Machining, and the physics-chem characteristic of two kinds of materials should be able to be compatible.Compatible can also can the employing in addition to add compatible coupling agent by to the modification of plastic material or to the modification of bamboo fibers or use both means and realize.
The present invention is by the two-step approach modification, the first step is with surface-modifying agent and bamboo fibers Compositing Change fiber surface polarity, second step mixed the bamboo fibers after the modification with auxiliary agents such as plastics parent and plastics coupling agents, further in mixture, add other additives, by extrusion molding, produce the matrix material particle.
As the preparation method's of bamboo fiber composite plastic particles of the present invention preferred implementation, described length of bamboo fibre is the 0.1-2 millimeter.
As the plastics toughener, the thickness of intensity and later workpiece is mainly considered in the selection of length.Say that generally length heals the changqiang degree more greatly.But very thin as fruit product, should not use the fiber greater than 0.2 millimeter as 0.2 millimeter film is filler.Some inventions add bamboo/wood powder, are not fibers, intensity difference.Plastic pellet in the market is at the 3-5 millimeter.So fiber is unsuitable oversize.
Can not be too short or long in order to reach certain intensity bamboo fibers, the intensity of too short fiber such as its product of bamboo powder and draw high performance than macrofiber a little less than, differ greatly as the processing characteristics and the plastic raw materials of long its product of fruit fiber.Therefore, the length of bamboo fibre of bamboo fiber composite plastic particles of the present invention is preferably the 0.1-2 millimeter.
As the preparation method's of bamboo fiber composite plastic particles of the present invention preferred implementation, described thermally-stabilised cationic surfactant is aliphatic ammonium, quaternary ammonium salt.
Preferred implementation as the preparation method of bamboo fiber composite plastic particles of the present invention, in the described step (1), bamboo fibers be impregnated in the surface-modifying agent, the concentration of surface-modifying agent is 0.5-5wt%, dipping time was at 5-30 minute, dehydrate behind the dipping, drying temperature is 100～150 ℃, and be 1～5 hour time of drying.
Drying mainly is dehydration.Drying temperature can be established greater than 100 ℃, is above the boiling point, and less than 150C, does not allow bamboo structure destroy.
As the preparation method's of bamboo fiber composite plastic particles of the present invention preferred implementation, described auxiliary agent comprises coupling agent, softening agent, lubricant and antioxidant.
Auxiliary agent is very ripe in plastic working, and those skilled in the art can select according to prior art fully.
As the preparation method's of bamboo fiber composite plastic particles of the present invention preferred implementation, described plastic substrate is to be suitable for the thermoplastic material that extrusion molding manufactures plastic pellet.
As the preparation method's of bamboo fiber composite plastic particles of the present invention preferred implementation, described plastic substrate is polypropylene, polyethylene, PVC or acrylonitrile-butadiene-styrene copolymer.
As the preparation method's of bamboo fiber composite plastic particles of the present invention preferred implementation, described coupling agent is the polypropylene of toxilic acid stem grafting skill, silane coupling agent, titanate coupling agent.
The present invention also provides bamboo fiber composite plastic particles that the preparation method of the bamboo fiber composite plastic particles according to the present invention prepares as sheet material, container, building materials, toy, the purposes of furniture.
Embodiment
For making the present invention easier to understand, will further set forth specific embodiments of the invention below.
The auxiliary agent that the present invention relates to is very ripe in plastic working, and those skilled in the art can select according to prior art fully.
Auxiliary agent includes but not limited to coupling agent, softening agent, lubricant and antioxidant.
The maximum characteristics of coupling agent molecule structure are to contain two different groups of chemical property in the molecule, and one is the group of close inorganics, easy and inorganics surface affinity; Another is close organic group, can with synthetic resins or other polymkeric substance affinity.Coupling agent is equivalent to " molecule bridge ", in order to improving the interface interaction between inorganics and the organism, thereby improves performance of composites greatly, as physicals, electrical property, thermal characteristics, optical property etc.Coupling agent of a great variety, mainly contain the coupling agent of silane coupling agent, titanate coupling agent, aluminate coupling agent, bimetal coupling agent, phosphate coupling agent, boric acid ester coupler, chromium complex and other higher fatty acid, alcohol, ester, the plastics of modification such as the polypropylene of maleic anhydride graft are also arranged.
The effect of softening agent is that the plasticity of polymeric system is increased.The main effect of softening agent is that the inferior valency that weakens between the polymer molecule is strong, it is Van der Waals force, thereby increased the movability of polymer molecular chain, reduced the crystallinity of polymer molecular chain, promptly increased the plasticity of polymkeric substance, the hardness, modulus, softening temperature and the embrittlement temperature that show as polymkeric substance descend, and elongation, flexibility and snappiness improve.Softening agent various in style is maximum with the phthalic ester.Stearate is also arranged, fatty group dibasic acid, phosphoric acid ester, epoxy compounds etc.
Lubricant is used for processing such as plastics and improves flowability and release property, prevents in machine or adhesion and produce defective such as flake in the mould.
Antioxidant mainly prevents plastic working, stores, and oxidation when using, aging and additive that lose its original mechanical characteristics has phenolic antioxidant, Phosphorus oxidation inhibitor, sulfur type antioxidant, metallic ion passivation agent, complex type antioxidant etc.
Embodiment 1
A kind of preparation method of bamboo fiber composite plastic particles, this method comprises the steps:
(1) 0.1-2 millimeter bamboo fibers be impregnated in the surface-modifying agent, the concentration of surface-modifying agent is 0.5-5wt%, dipping time was at 5-30 minute, dehydrate behind the dipping, drying temperature is 100～150 ℃, be 1～5 hour time of drying, and the surface-modifying agent of employing is aliphatic ammonium, the quaternary ammonium salt of thermally-stabilised cationic surfactant;
(2) bamboo fibers after the modification is mixed with auxiliary agents such as plastic substrate, coupling agent, softening agent, lubricant and antioxidants;
(3) mixture extrusion molding, the granulation that step (2) is obtained makes product.
Embodiment 2
Staple fibre is immersed in the surface modification agent solution, and properties-correcting agent is mainly heat-staple cats product such as amine salt, quaternary ammonium salt, heterocyclic.The concentration of solution is 0.5%-5%.Bamboo fibers centrifuge dripping after the immersion was dried 1～5 hour under 100 ℃ of-150 ℃ of temperature, removed moisture content.Short bamboo fibers after the processing further mixes 30-300 second with the polypropylene (modified plastics or coupling agent) of 0.5-5% toxilic acid stem grafting skill in high-speed mixer, the plastic raw materials that in mixture, adds 30-70%, antioxidant 0.1-2%, softening agent 1-5% and other auxiliary agents further mix 30-300 second in high-speed mixer.Mixture is delivered to extrusion molding manufacture plastic pellet.
Embodiment 3
Get 5 kilograms of length at 0.1～0.5 millimeter bamboo fibers, be immersed in 1% the cetyl trimethyl ammonium oxide 10 minutes, whizzer dries 3 minutes, is positioned over baking oven 110oC oven dry 3 hours, dehydration.With the polypropylene of the fiber handled and 0.14 kilogram of maleic anhydride solution graft copolymerization low speed mixing 30 seconds high-speed mixing 30 seconds again in high mixer.Add 5 kilograms of polypropylene then, Zinic stearas, 0.2 kilogram of ethene paraffin, 0.4 kilogram of antioxidant, 168,1010 each 0.1 kilogram of low speed mixing 30 seconds are high-speed mixing 30 seconds again.Mixture is placed the twin screw extruder mixing granulator.Be prepared into bamboo-plastic composite material.Measure the tensile strength 31.8MPa of material, tensile modulus 3180Mpa, elongation at break 2.8%, bending strength 52.1MPa, modulus in flexure 3350Mpa.
The method that material is measured in appeal is standard method, and the physical strength that is used for material is measured, and is ASTMD638 as first three items, and back two is ASTMD790.
Embodiment 4
Getting a length is 20cm, and the bamboo chopsticks that diameter is about 3 millimeters are immersed 20g/LNaOH solution with it, are heated to 100 ℃, half an hour, bamboo chopsticks surface fiber element are separated with the hot water injection repeatedly with colloid.The sample surfaces of being produced mainly is shown as the feature of bamboo fibers.For the effect of measuring its modification with the sample dimidiation, a part is not handled, another part soaked in 1% palmityl trimethyl ammonium chloride 10 minutes, modification drains after handling, high-volume in 110 ℃ of dryings of baking oven 3 hours, with dried sample determination contact angle, the sample contact angle of not handling is 35 degree, and the contact angle of handling through modification is 82 degree.
Last institute should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although the present invention has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical solution of the present invention.
Claims (9)
1. the preparation method of a bamboo fiber composite plastic particles is characterized in that, this method comprises the steps:
(1) bamboo fibers is carried out surface modification treatment, the surface-modifying agent of employing is thermally-stabilised cationic surfactant;
(2) bamboo fibers after the modification is mixed with plastic substrate, auxiliary agent;
(3) mixture extrusion molding, the granulation that step (2) is obtained makes product.
2. the preparation method of bamboo fiber composite plastic particles according to claim 1 is characterized in that, described length of bamboo fibre is the 0.1-2 millimeter.
3. the preparation method of bamboo fiber composite plastic particles according to claim 1 is characterized in that, described thermally-stabilised cationic surfactant is aliphatic ammonium, quaternary ammonium salt.
4. the preparation method of bamboo fiber composite plastic particles according to claim 1, it is characterized in that, in the described step (1), bamboo fibers be impregnated in the surface-modifying agent, the concentration of surface-modifying agent is 0.5-5wt%, and dipping time dehydrated behind the dipping at 5-30 minute, drying temperature is 100～150 ℃, and be 1～5 hour time of drying.
5. the preparation method of bamboo fiber composite plastic particles according to claim 1 is characterized in that, described auxiliary agent comprises coupling agent, softening agent, lubricant and antioxidant.
6. the preparation method of bamboo fiber composite plastic particles according to claim 1 is characterized in that, described plastic substrate is to be suitable for the thermoplastic material that extrusion molding manufactures plastic pellet.
7. the preparation method of bamboo fiber composite plastic particles according to claim 1 is characterized in that, described plastic substrate is polypropylene, polyethylene, PVC or acrylonitrile-butadiene-styrene copolymer.
8. the preparation method of bamboo fiber composite plastic particles according to claim 1 is characterized in that, described coupling agent is the polypropylene of toxilic acid stem grafting skill, silane coupling agent, titanate coupling agent.
9. the bamboo fiber composite plastic particles for preparing of the preparation method of bamboo fiber composite plastic particles according to claim 1 is as sheet material, container, the purposes of dragging the pad building materials.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166861A (en) * | 2010-12-28 | 2011-08-31 | 湖南恒盾集团有限公司 | Preparation method of bamboo batten-reinforced bamboo plastic composite material |
| CN104150843A (en) * | 2014-08-25 | 2014-11-19 | 福建巨岸建设工程有限公司 | Modified bamboo fiber/polymer composite high-toughness concrete and preparation method thereof |
| CN104419060A (en) * | 2013-08-29 | 2015-03-18 | 合肥杰事杰新材料股份有限公司 | Continuous organic fiber-filled polypropylene composite material and preparation method thereof |
| CN106280218A (en) * | 2016-08-11 | 2017-01-04 | 北京汽车集团有限公司 | A kind of preparation method of the compositions and antimicrobial composite material for preparing antimicrobial composite material |
| CN106479082A (en) * | 2016-10-07 | 2017-03-08 | 常州创索新材料科技有限公司 | A kind of preparation method of toy for children modeling material |
| CN114685878A (en) * | 2022-04-12 | 2022-07-01 | 安吉正源塑木装饰材料有限公司 | CPC carbon-plastic composite material and preparation process thereof |
| WO2023124710A1 (en) * | 2021-12-31 | 2023-07-06 | 天津金发新材料有限公司 | Polypropylene material and preparation method therefor |
| CN118652497A (en) * | 2024-08-19 | 2024-09-17 | 安徽泽泓塑业股份有限公司 | Bio-based degradable composite material based on moso bamboo fiber powder and preparation method thereof |
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| CN101747645A (en) * | 2009-04-02 | 2010-06-23 | 张义卿 | Method for preparing bamboo plastic composite material |
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Patent Citations (1)
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| CN101747645A (en) * | 2009-04-02 | 2010-06-23 | 张义卿 | Method for preparing bamboo plastic composite material |
Non-Patent Citations (1)
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166861A (en) * | 2010-12-28 | 2011-08-31 | 湖南恒盾集团有限公司 | Preparation method of bamboo batten-reinforced bamboo plastic composite material |
| CN104419060A (en) * | 2013-08-29 | 2015-03-18 | 合肥杰事杰新材料股份有限公司 | Continuous organic fiber-filled polypropylene composite material and preparation method thereof |
| CN104419060B (en) * | 2013-08-29 | 2017-09-05 | 合肥杰事杰新材料股份有限公司 | A kind of continuous organic fiber filling polypropylene composite material and preparation method thereof |
| CN104150843A (en) * | 2014-08-25 | 2014-11-19 | 福建巨岸建设工程有限公司 | Modified bamboo fiber/polymer composite high-toughness concrete and preparation method thereof |
| CN104150843B (en) * | 2014-08-25 | 2015-11-18 | 福建巨岸建设工程有限公司 | Modified bamboo fiber/polymer thing compound high tenacity concrete and preparation method thereof |
| CN106280218A (en) * | 2016-08-11 | 2017-01-04 | 北京汽车集团有限公司 | A kind of preparation method of the compositions and antimicrobial composite material for preparing antimicrobial composite material |
| CN106280218B (en) * | 2016-08-11 | 2019-01-25 | 北京汽车集团有限公司 | A kind of preparation method of the composition for being used to prepare antimicrobial composite material and antimicrobial composite material |
| CN106479082A (en) * | 2016-10-07 | 2017-03-08 | 常州创索新材料科技有限公司 | A kind of preparation method of toy for children modeling material |
| WO2023124710A1 (en) * | 2021-12-31 | 2023-07-06 | 天津金发新材料有限公司 | Polypropylene material and preparation method therefor |
| CN114685878A (en) * | 2022-04-12 | 2022-07-01 | 安吉正源塑木装饰材料有限公司 | CPC carbon-plastic composite material and preparation process thereof |
| CN118652497A (en) * | 2024-08-19 | 2024-09-17 | 安徽泽泓塑业股份有限公司 | Bio-based degradable composite material based on moso bamboo fiber powder and preparation method thereof |
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| CN101914298B (en) | 2012-06-27 |
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