CN109575625A - A kind of natural fine modeling particle and preparation method thereof - Google Patents
A kind of natural fine modeling particle and preparation method thereof Download PDFInfo
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- CN109575625A CN109575625A CN201811437248.9A CN201811437248A CN109575625A CN 109575625 A CN109575625 A CN 109575625A CN 201811437248 A CN201811437248 A CN 201811437248A CN 109575625 A CN109575625 A CN 109575625A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2399/00—Characterised by the use of natural macromolecular compounds or of derivatives thereof not provided for in groups C08J2301/00 - C08J2307/00 or C08J2389/00 - C08J2397/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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Abstract
The present invention provides a kind of preparation methods of natural fine modeling particle, include the following steps: step (1), squeeze out biomass using three screw rod explosion extruders, the natural fiber after being dissociated；Natural fiber after dissociating obtained in step (1) is mixed with resin material, obtains mixed material by step (2)；Mixed material obtained in step (2) is kneaded by step (3)；Step (4) is granulated using the material after being kneaded in conical double screw extruder extrusion step (3), obtains the natural fine modeling particle；The present invention is by selecting three screw rod explosion extruders to squeeze out biological material, the technological parameter adjusted in preparation method and material proportion appropriate simultaneously obtain the natural fiber after purer dissociation, so that obtained natural fiber and resin material associativity are more preferable, obtained natural fine modeling particle has higher mechanical property and heat resistance, has broader practice field.
Description
Technical field
The invention belongs to field of compound material more particularly to a kind of natural fine modeling particle and preparation method thereof.
Background technique
Biological material abundance, but common biological material, such as crops by-product utilization rate it is logical
Often relatively low, the common processing mode of biological material obtained in agricultural production is to do directly as fuel combustion and returning to the field
Fertilizer, the Land use systems of other relatively conventional biomass mainly include as the culture base-material of edible mushroom, as feed, conduct
The raw materials for production of edible soy sauce and food additives, as medical material, as adhesive, as extract chemical products raw material
Deng.
Common biological material includes wood powder, rice chaff, bamboo powder, straw, straw or peanut shell etc., wherein containing abundant
Cellulosic material, can by by cellulose components therein dissociate come, mix a certain proportion of resin and through mixing
Fine modeling particle is made.However, the cellulose components being still had in biological material in the preparation process of fine modeling particle at present are difficult
The problems such as poor with resin material compatibility with the cellulose after extraction, and extraction, lead to existing fabricating technology not
Enough maturations, have much room for improvement there are many more place.
For example, disclosing a kind of method for preparing lignocellulose bio-based plastics in CN103773054A, including first right
The pretreatment that wood fiber biomass is dried and crushes carries out ball milling pretreatment later, then will be wooden after ball milling
Fibrous raw material is mixed with ionic liquid/dimethyl sulfoxide or quaternary ammonium salt/dimethyl sulphoxide solution, is subsequently placed into kneader and is pinched
It closes, dimethyl sulfoxide is recycled in kneading process, after kneading, lignocellulose bio-based plastics can be obtained, however,
Its disclosed preparation method is difficult to realize being kept completely separate for cellulose in biomass, uses ionic liquid treated wooden fibre
There are still the impurity such as more protein in dimension, so that the mechanical property of obtained fine moulding material is poor, tensile strength is only
7MPa or so, bending strength is in 15MPa or more.A kind of method of processing straw through plasma is disclosed in CN102212971A,
By being put into plasma generator after crushing stalk, 1035~30min of discharge treatment under the pressure of Pa, be placed on
It impregnates and washes in sig water, obtain lignocellulosic, lignocellulosic purity obtained by the above method is higher, but energy consumption and dirt
It contaminates huge, is not suitable for the preparation of lignocellulosic.It is raw that a kind of poly (propylene carbonate)/agricultural are disclosed in CN106752007A
Substance composite, by carrying out gas explosion processing to agricultural-forestry biomass, later by itself and poly (propylene carbonate), plasticiser, foaming
Agent and the filler melt blending in melt blending equipment, are put into mold and foam to obtain composite material, carry out gas using gas explosion tank
It is quick-fried to obtain the fiber in biomass, so that obtained composite material has preferable resistance to low temperature and foam performance, but its
Obtained Compound Material Engineering intensity is lower, limits it and uses field.It is disclosed in CN102971375A a kind of for producing
The composition of imitation wood, the partial size of PVC numerical value and 30~40wt% including 30~40wt% are the rice husk of 0.42~0.25mm
And/or the mixture of peanut shell powder, the biological material rice husk and peanut shell powder used without explosion treatment, wherein
Containing the impurity such as a large amount of protein and fat, it is set to obtain fine moulding material mechanics poor.
On the basis of existing technology, those skilled in the art needs to propose a kind of preparation of new natural fine modeling particle
Method obtains a kind of natural fine modeling particle by raw material of purer biomass fiber and resin material, meanwhile, it also needs to pass through tune
The technological parameter and material proportion in Preparation Method are controlled, to improve the mechanical strength of obtained natural fine modeling particle, is made it have
Broader practice field.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of preparation of new natural fine modeling particle
Method obtains a kind of natural fine modeling particle by raw material of purer biomass fiber and resin material, meanwhile, it also needs to pass through tune
The technological parameter and material proportion in Preparation Method are controlled, to improve the mechanical strength of obtained natural fine modeling particle, is made it have
Broader practice field.
For this purpose, one of the objects of the present invention is to provide a kind of preparation method of natural fine modeling particle, the system
Preparation Method includes the following steps:
Step (1) squeezes out biomass using three screw rod explosion extruders, the natural fiber after being dissociated；
Natural fiber after dissociating obtained in step (1) is mixed with resin material, obtains mixed material by step (2)；
Mixed material obtained in step (2) is kneaded by step (3)；
Step (4) is granulated using the material after being kneaded in conical double screw extruder extrusion step (3), is obtained the day
So fine modeling particle.
By the present invention in that squeezing out biomass with three screw rod explosions, the purity of obtained natural fiber can be improved, is reduced
To natural fiber in the water-solubility impurities such as protein content, moreover, being steamed with single screw rod explosion extruder or common autoclave
The differences such as vapour blaster, three screw rod explosion extruders are in addition to generating steam blasting effect, object therein in the unexpected pressure release in exit
When material passes through the engaged section of three screw rods during transportation, also due to the circulation that becomes smaller-become larger of transfer passage volume, is ground
Pressure, the effect discharged are more advantageous to the dissociation of biomass structure to generate the effect of local pressurization, discharge.
Preferably, the parallel in the same plane of three screw rods in three screw rod explosion extruders described in step (1)
Column, and the direction of rotation of adjacent two screw rods is on the contrary, the arrangement mode of screw rod enables in above-mentioned three screw rods explosion extruder
Material moving track in transmission process is complicated, improves residence time of the material in explosion extrusion process, improves explosion
Efficiency, moreover, three screw rods arranged in parallel are in high-speed rotation process, the strong mixing effect that spiral shell rib can generate is made it have
Excellent dispersion mixing function, material conveying capacity greatly enhance and have excellent self-cleaning ability and stability.
Preferably, the outlet mouth mold end of three screw rod explosion extruders described in step (1) is cone shape, and mouth mold end
Remoter from outlet of extruder, the discharge port at mouth mold end is thinner, and the mouth mold end of above-mentioned shape helps to improve the efficiency of steam blasting.
Preferably, the revolving speed of three screw rod explosion extruders described in step (1) be 40~80 turns/min, for example, 42
Turn/min, 44 turns/min, 48 turns/min, 52 turns/min, 55 turns/min, 58 turns/min, 62 turns/min, 65 turns/min, 68 turns/
Min, 72 turns/min, 75 turns/min or 78 turn/min etc..
Preferably, the discharge-end temperature of three screw rod explosion extruders described in step (1) is 180~200 DEG C, for example,
182 DEG C, 184 DEG C, 186 DEG C, 188 DEG C, 190 DEG C, 192 DEG C, 194 DEG C, 196 DEG C or 198 DEG C.
Preferably, the water content of biomass described in step (1) be 5~20wt%, for example, 6wt%, 7wt%,
8wt%, 9wt%, 10wt%, 11wt%, 12wt%, 13wt%, 14wt%, 15wt%, 16wt%, 17wt%, 18wt% or
19wt% etc..
The biological material containing above-mentioned water content ranges is selected to be more advantageous to the efficiency for improving explosion and obtained fiber
Purity, excessively high water content will cause that the material in extruder is discontinuous, and too low water content will cause the steam for explosion
Amount is reduced, and above situation will cause the efficiency decline of explosion extrusion, the content and purity of the natural fiber reduced.
Preferably, the biomass is by heat treatment so that its water content is 5~20wt%.
Preferably, biomass described in step (1) is in wood powder, rice chaff, bamboo powder, straw, straw or peanut shell
Any one or at least two mixture, further preferably peanut shell.
Preferably, resin material described in step (2) is Corvic, polycarbonate, poly-methyl methacrylate
In ester or polyamide any one or at least two mixture.
Preferably, the weight ratio of resin material and natural fiber is 1:1~2, example in mixed material described in step (2)
For example 1:1.1,1:1.2,1:1.3,1:1.4,1:1.5,1:1.6,1:1.7,1:1.8 or 1:1.9 etc., the too high levels meeting of resin
Reduce the impact resistance of obtained natural fine modeling particle.
Preferably, the weight ratio of resin material and natural fiber is 1:1.5 in mixed material described in step (2).
Preferably, auxiliary agent is also added in mixed material described in step (2).
Preferably, the auxiliary agent includes stabilizer, lubricant, foaming agent, foaming control agent, coupling agent, filler or toughening
In agent any one or at least two mixture.
Preferably, the stabilizer is calcium zinc stabilizer.
Preferably, the lubricant is paraffin and/or polyethylene wax.
Preferably, the foaming agent is the CCR-10 type foaming agent of Kunshan Ya Yang composite material Science and Technology Ltd. production.
Preferably, the foaming control agent is that the 530 types foaming of Kunshan Ya Yang composite material Science and Technology Ltd. production is adjusted
Save agent.
Preferably, the coupling agent is the DL-411 type coupling agent of Foshan Huan Rui plastic additive Co., Ltd production.
Preferably, the filler is calcium carbonate powder.
Preferably, mixing described in step (3) is carried out by high-speed mixer.
Preferably, the temperature of mixing described in step (3) be 120~135 DEG C, for example, 121 DEG C, 122 DEG C, 123 DEG C,
124 DEG C, 125 DEG C, 126 DEG C, 127 DEG C, 128 DEG C, 129 DEG C, 130 DEG C, 131 DEG C, 132 DEG C, 133 DEG C or 134 DEG C etc..
Preferably, the time of mixing described in step (3) be 1~10min, for example, 2min, 3min, 4min, 5min,
6min, 7min, 8min or 9min etc..
Preferably, the material after mixing described in step (4) is needed before being squeezed out using conical double screw extruder
It is cooled to 45 DEG C or less.
It preferably, the use of the temperature that conical double screw extruder squeezes out is 160~200 DEG C described in step (4), for example,
162℃、164℃、166℃、168℃、170℃、172℃、175℃、178℃、180℃、185℃、188℃、190℃、192
DEG C, 195 DEG C or 198 DEG C etc..
Preferably, the preparation method includes the following steps:
Step (1), the biomass of 5~20wt% of water content is squeezed out using three screw rod explosion extruders, and three screw rod explosions are squeezed
The revolving speed of machine is 40~80 turns/min out, and the temperature of outlet end is 180~200 DEG C, squeezes out the natural fiber after being dissociated；
Step (2), by the natural fiber after being dissociated obtained in step (1) and Corvic material by 1.5:1's
Weight ratio mixing, stabilizer, lubricant, foaming agent, foaming control agent, coupling agent, filler and toughener are added thereto, obtains
Mixed material；
Mixed material obtained in step (2) is placed in high-speed mixer and is kneaded by step (3), the temperature of mixing
It is 120~135 DEG C, the time of mixing is 1~10min；
Material after being kneaded obtained in step (3) is cooled to 45 DEG C hereinafter, squeezing using conical double-screw by step (4)
Machine squeezes out out, and the temperature setting of conical double screw extruder is 160~200 DEG C, and the material after extrusion obtains described by granulation
Natural fine modeling particle.
The second object of the present invention is to provide a kind of natural fine modeling particle, and the natural fine modeling particle passes through as previously described
Method preparation.
Numberical range of the present invention not only includes enumerated point value, further includes the above-mentioned numerical value not included
Arbitrary point value between range, as space is limited and for concise consideration, range described in the present invention no longer exclusive list includes
Specific point value.
Compared with prior art, the invention has the benefit that
The present invention squeezes out biological material by three screw rod explosion extruders of selection, while in adjusting preparation method appropriate
Technological parameter and material proportion obtain the natural fiber after purer dissociation so that obtained natural fiber and resinous wood
Expect that associativity is more preferable, obtained natural fine modeling particle has higher mechanical property and heat resistance, has broader practice
Field.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation.
Embodiment 1
Natural fine modeling particle 1 is made by the steps:
Step (1) squeezes out the peanut shell that the water content by heat treatment is 15wt% using three screw rod explosion extruders,
The revolving speed of three screw rod explosion extruders is 60 turns/min, and the temperature of outlet end is 190 DEG C, squeezes out the natural fibre after being dissociated
Dimension；
Step (2), by natural fiber and 100kg Corvic material after being dissociated obtained in 150kg step (1)
Mixing, addition 1kg calcium zinc stabilizer, 1kg paraffin, the Kunshan 3kg Ya Yang composite material Science and Technology Ltd. produce thereto
CCR-10 type foaming agent, 530 type foaming control agents of the Kunshan 7kg Ya Yang composite material Science and Technology Ltd. production, the Foshan 6.3kg
The DL-411 type coupling agent of Huan Rui plastic additive Co., Ltd production, the calcium carbonate powder and 4.2kg that 15kg partial size is 1000 mesh
Toughener obtains mixed material；
Mixed material obtained in step (2) is placed in high-speed mixer and is kneaded by step (3), the temperature of mixing
It is 128 DEG C, the time of mixing is 5min；
Material after being kneaded obtained in step (3) is cooled to 45 DEG C hereinafter, squeezing using conical double-screw by step (4)
Machine squeezes out out, and the temperature setting of conical double screw extruder is 180 DEG C, and the material after extrusion obtains described natural by granulation
Fibre modeling particle 1.
Wherein, three screw rods in the three screw rods explosion extruder are arranged in parallel in the same plane, and adjacent two
The direction of rotation of screw rod is on the contrary, the outlet mouth mold end of three screw rod explosion extruders is cone shape, and mouth mold end goes out from extruder
Mouth is remoter, and the discharge port at mouth mold end is thinner.
Embodiment 2
Natural fine modeling particle 2 is made by the steps:
Difference with embodiment 1 is only that the peanut shell in step (1) replaces with the water content after heat treatment and is
The wood powder of 5wt%.
Embodiment 2 obtains natural fine modeling particle 2.
Embodiment 3
Natural fine modeling particle 3 is made by the steps:
Difference with embodiment 1 is only that the peanut shell in step (1) replaces with the water content after heat treatment and is
The rice chaff of 10wt%.
Embodiment 3 obtains natural fine modeling particle 3.
Embodiment 4
Natural fine modeling particle 4 is made by the steps:
Difference with embodiment 1 is only that the peanut shell in step (1) replaces with the water content after heat treatment and is
The bamboo powder of 20wt%.
Embodiment 4 obtains natural fine modeling particle 4.
Embodiment 5
Natural fine modeling particle 5 is made by the steps:
Difference with embodiment 1 is only that it is 8wt% that the peanut shell in step (1), which replaces with untreated water content,
Straw.
Embodiment 5 obtains natural fine modeling particle 5.
Embodiment 6
Natural fine modeling particle 6 is made by the steps:
Difference with embodiment 1 is only that it is 14wt% that the peanut shell in step (1), which replaces with untreated water content,
Wheat straw.
Embodiment 6 obtains natural fine modeling particle 6.
Embodiment 7
Natural fine modeling particle 7 is made by the steps:
Difference with embodiment 1 is only that the water content of the peanut shell in step (1) is 4wt% after heat treatment.
Embodiment 7 obtains natural fine modeling particle 7.
Embodiment 8
Natural fine modeling particle 8 is made by the steps:
Difference with embodiment 1 is only that the water content of the peanut shell in step (1) is after heat treatment
22wt%.
Embodiment 8 obtains natural fine modeling particle 8.
Embodiment 9
Natural fine modeling particle 9 is made by the steps:
Difference with embodiment 1 is only that the additive amount of the natural fiber in step (2) after dissociation is 90kg.
Embodiment 9 obtains natural fine modeling particle 9.
Embodiment 10
Natural fine modeling particle 10 is made by the steps:
Difference with embodiment 1 is only that the Corvic in step (2) replaces with the poly- methyl-prop of identical weight
E pioic acid methyl ester.
Embodiment 10 obtains natural fine modeling particle 10.
Embodiment 11
Natural fine modeling particle 11 is made by the steps:
Difference with embodiment 1 is only that the revolving speed of three screw rod explosion extruders is 40 turns/min in step (1).
Embodiment 11 obtains natural fine modeling particle 11.
Embodiment 12
Natural fine modeling particle 12 is made by the steps:
Difference with embodiment 1 is only that the revolving speed of three screw rod explosion extruders is 80 turns/min in step (1).
Embodiment 12 obtains natural fine modeling particle 12.
Embodiment 13
Natural fine modeling particle 13 is made by the steps:
Difference with embodiment 1 is only that the temperature at three screw rod explosion outlet of extruder ends is 180 DEG C in step (1).
Embodiment 13 obtains natural fine modeling particle 13.
Embodiment 14
Natural fine modeling particle 14 is made by the steps:
Difference with embodiment 1 is only that the temperature at three screw rod explosion outlet of extruder ends is 200 DEG C in step (1).
Embodiment 14 obtains natural fine modeling particle 14.
Embodiment 15
Natural fine modeling particle 15 is made by the steps:
Difference with embodiment 1 is only that three screw rods in three screw rod explosion extruders described in step (1) are in three
Triangular arrangement, and the direction of rotation of adjacent two screw rods is identical.
Embodiment 15 obtains natural fine modeling particle 15.
Embodiment 16
Natural fine modeling particle 16 is made by the steps:
Difference with embodiment 1 is only that the outlet mouth mold end in three screw rod explosion extruders described in step (1) is
Round rectangle shape, and the discharging mouth-shaped at mouth mold end is identical as feeding inlet.
Embodiment 16 obtains natural fine modeling particle 16.
Reference examples 1
Natural fine modeling particle 17 is made by the steps:
Step (1) squeezes out the peanut shell that the water content by heat treatment is 15wt% using twin-screw explosion extruder,
The revolving speed of twin-screw explosion extruder is 60 turns/min, and the temperature of outlet end is 190 DEG C, squeezes out the natural fibre after being dissociated
Dimension；
Step (2), by natural fiber and 100kg Corvic material after being dissociated obtained in 150kg step (1)
Mixing, addition 1kg calcium zinc stabilizer, 1kg paraffin, the Kunshan 3kg Ya Yang composite material Science and Technology Ltd. produce thereto
CCR-10 type foaming agent, 530 type foaming control agents of the Kunshan 7kg Ya Yang composite material Science and Technology Ltd. production, the Foshan 6.3kg
The DL-411 type coupling agent of Huan Rui plastic additive Co., Ltd production, the calcium carbonate powder and 4.2kg that 15kg partial size is 1000 mesh
Toughener obtains mixed material；
Mixed material obtained in step (2) is placed in high-speed mixer and is kneaded by step (3), the temperature of mixing
It is 128 DEG C, the time of mixing is 5min；
Material after being kneaded obtained in step (3) is cooled to 45 DEG C hereinafter, squeezing using conical double-screw by step (4)
Machine squeezes out out, and the temperature setting of conical double screw extruder is 180 DEG C, and the material after extrusion obtains described natural by granulation
Fibre modeling particle 17.
Wherein, the outlet mouth mold end of the twin-screw explosion extruder is cone shape, and mouth mold end is from outlet of extruder
Remoter, the discharge port at mouth mold end is thinner.
Reference examples 2
Natural fine modeling particle 18 is made by the steps:
Step (1) carries out Steam explosion treatment to the peanut shell that water content is 50wt% using autoclave steam blasting machine, obtains
Natural fiber after to dissociation；
Step (2), by natural fiber and 100kg Corvic material after being dissociated obtained in 150kg step (1)
Mixing, addition 1kg calcium zinc stabilizer, 1kg paraffin, the Kunshan 3kg Ya Yang composite material Science and Technology Ltd. produce thereto
CCR-10 type foaming agent, 530 type foaming control agents of the Kunshan 7kg Ya Yang composite material Science and Technology Ltd. production, the Foshan 6.3kg
The DL-411 type coupling agent of Huan Rui plastic additive Co., Ltd production, the calcium carbonate powder and 4.2kg that 15kg partial size is 1000 mesh
Toughener obtains mixed material；
Mixed material obtained in step (2) is placed in high-speed mixer and is kneaded by step (3), the temperature of mixing
It is 128 DEG C, the time of mixing is 5min；
Material after being kneaded obtained in step (3) is cooled to 45 DEG C hereinafter, squeezing using conical double-screw by step (4)
Machine squeezes out out, and the temperature setting of conical double screw extruder is 180 DEG C, and the material after extrusion obtains described natural by granulation
Fibre modeling particle 18.
By following test method to the performance of natural fine modeling particle 1~18 obtained in the various embodiments described above and reference examples
It is tested, test result is listed in table 1:
(1) tensile property is tested
According to method described in standard GB/T/T 16421-1996 " plastic tensile performance small sample test method " point
It Ce Shi not the natural fine tensile strength and elongation at break for moulding particle 1~18.
(2) bending property is tested
Test days are distinguished according to method described in standard GB/T/T 9341-2008 " measurement of plastics bending property "
So bending strength and bending modulus of fine modeling particle 1~18.
(3) impact strength is tested
According to method described in standard GB/T/T 1043-1993 " rigid plastics charpy impact test method " point
It Ce Shi not the natural fine notch impact strength for moulding particle 1~18.
(4) heat distortion temperature is tested
According to standard GB/T/T 1634.2-2004 " measurement part 2 plastics, hard rubber of plastics load deformation temperature
With long fiber reinforcement composite material " described in method test the heat distortion temperature of natural fine modeling particle 1~18 respectively.
The performance comparison table of the natural fine modeling particle 1~18 of table 1
It is logical to can be seen that the present invention from the comparison in table 1 between embodiment 1 and embodiment 15~16 and reference examples 1~2
It crosses and three screw rod explosion extruders is selected to squeeze out biological material, the natural fiber after purer dissociation can be obtained, so that obtaining
The natural fiber arrived and resin material associativity are more preferable, so that obtained natural fine modeling particle has higher mechanical property
And heat resistance, meanwhile, keep three screw rods arranged in parallel and the outlet mouth mold end for changing extruder is that cone obtains more preferably
Explosion squeeze out effect.
From the comparison in table 1 between Examples 1 to 6 it is found that the preparation method of natural fine modeling particle of the present invention is suitable
It is used to prepare the natural fine modeling particle using a variety of biological materials as raw material, wherein the fibre being prepared using peanut shell as raw material
Mould the thermal change that particle has relatively high mechanical strength, excellent bending property, excellent impact resistance and 120 DEG C or more
Shape temperature illustrates that peanut shell material is best suited for the optimal natural fine modeling particle of preparation comprehensive performance.
From the comparison in table 1 between embodiment 1 and embodiment 7 and 8 it is found that the water content of biomass is for using three screw rods
Being affected when explosion extruder handles biomass, when the water content of biological material is in 5~20wt%, explosion squeezes out effect
Fruit is optimal, and excessively high water content will cause that the material in extruder is discontinuous, and too low water content will cause the steaming for explosion
Vapour amount is reduced.
In conclusion the present invention is by selecting three screw rod explosion extruders to squeeze out biological material, while adjusting appropriate
Technological parameter and material proportion in preparation method obtain the natural fiber after purer dissociation, so that obtained natural fibre
Dimension is more preferable with resin material associativity, and obtained natural fine modeling particle has higher mechanical property and heat resistance, has more
Wide application field.
The Applicant declares that the foregoing is merely a specific embodiment of the invention, but protection scope of the present invention not office
It is limited to this, it should be clear to those skilled in the art, any to belong to those skilled in the art and take off in the present invention
In the technical scope of dew, any changes or substitutions that can be easily thought of, and all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of preparation method of natural fine modeling particle, which is characterized in that the preparation method includes the following steps:
Step (1) squeezes out biomass using three screw rod explosion extruders, the natural fiber after being dissociated；
Natural fiber after dissociating obtained in step (1) is mixed with resin material, obtains mixed material by step (2)；
Mixed material obtained in step (2) is kneaded by step (3)；
Step (4) is granulated using the material after being kneaded in conical double screw extruder extrusion step (3), is obtained the natural fibre
Mould particle.
2. preparation method according to claim 1, which is characterized in that three screw rod explosion extruder described in step (1)
In three screw rods it is arranged in parallel in the same plane, and the direction of rotation of adjacent two screw rods is opposite；
Preferably, the outlet mouth mold end of three screw rod explosion extruders described in step (1) is cone shape, and mouth mold end is from crowded
Machine outlet is remoter out, and the discharge port at mouth mold end is thinner.
3. preparation method according to claim 1 or 2, which is characterized in that three screw rod explosions described in step (1) squeeze out
The revolving speed of machine is 40~80 turns/min；
Preferably, the discharge-end temperature of three screw rod explosion extruders described in step (1) is 180~200 DEG C.
4. preparation method described according to claim 1~one of 3, which is characterized in that biomass described in step (1) contains
Water is 5~20wt%；
Preferably, the biomass is by heat treatment so that its water content is 5~20wt%；
Preferably, biomass described in step (1) is any in wood powder, rice chaff, bamboo powder, straw, straw or peanut shell
It is a kind of or at least two mixture, further preferably peanut shell.
5. preparation method described according to claim 1~one of 4, which is characterized in that resin material described in step (2) is
In Corvic, polycarbonate, polymethyl methacrylate or polyamide any one or at least two it is mixed
Close object；
Preferably, the weight ratio of resin material and natural fiber is 1:1~2 in mixed material described in step (2).
6. preparation method described according to claim 1~one of 5, which is characterized in that in mixed material described in step (2)
Also it is added with auxiliary agent；
Preferably, the auxiliary agent includes in stabilizer, lubricant, foaming agent, foaming control agent, coupling agent, filler or toughener
Any one or at least two mixture；
Preferably, the stabilizer is calcium zinc stabilizer；
Preferably, the lubricant is paraffin and/or polyethylene wax；
Preferably, the foaming agent is CCR-10 type foaming agent；
Preferably, the foaming control agent is 530 type foaming control agents；
Preferably, the coupling agent is DL-411 type coupling agent；
Preferably, the filler is calcium carbonate powder.
7. preparation method described according to claim 1~one of 6, which is characterized in that mixing described in step (3) passes through height
Fast mixing machine carries out；
Preferably, the temperature of mixing described in step (3) is 120~135 DEG C；
Preferably, the time of mixing described in step (3) is 1~10min.
8. preparation method described according to claim 1~one of 7, which is characterized in that the object after mixing described in step (4)
Material is cooled to 45 DEG C or less before squeezing out using conical double screw extruder；
It preferably, the use of the temperature that conical double screw extruder squeezes out is 160~200 DEG C described in step (4).
9. preparation method described according to claim 1~one of 8, which is characterized in that the preparation method includes the following steps:
Step (1) squeezes out the biomass of 5~20wt% of water content, three screw rod explosion extruders using three screw rod explosion extruders
Revolving speed be 40~80 turns/min, the temperature of outlet end is 180~200 DEG C, squeezes out the natural fiber after being dissociated；
Natural fiber after dissociating obtained in step (1) and Corvic material are pressed the weight of 1.5:1 by step (2)
Than mixing, stabilizer, lubricant, foaming agent, foaming control agent, coupling agent, filler and toughener are added thereto, is mixed
Material；
Mixed material obtained in step (2) is placed in high-speed mixer and is kneaded by step (3), and the temperature of mixing is 120
~135 DEG C, the time of mixing is 1~10min；
Material after being kneaded obtained in step (3) is cooled to 45 DEG C hereinafter, using conical double screw extruder by step (4)
It squeezes out, the temperature setting of conical double screw extruder is 160~200 DEG C, and the material after extrusion obtains described natural by granulation
Fibre modeling particle.
10. a kind of natural fine modeling particle, which is characterized in that the natural fine modeling particle passes through as described in one of claim 1~9
Method preparation.
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Application publication date: 20190405 |