CN102626964A - Method adopting cornstalk to manufacture composite macromolecular plastic particles - Google Patents
Method adopting cornstalk to manufacture composite macromolecular plastic particles Download PDFInfo
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- CN102626964A CN102626964A CN201210088623XA CN201210088623A CN102626964A CN 102626964 A CN102626964 A CN 102626964A CN 201210088623X A CN201210088623X A CN 201210088623XA CN 201210088623 A CN201210088623 A CN 201210088623A CN 102626964 A CN102626964 A CN 102626964A
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Abstract
The invention discloses a method adopting cornstalk to manufacture composite macromolecular plastic particles, which comprises the following steps: (1) cornstalk powder preparation: adopting a smashing machine to directly smash the cornstalk, enabling the smashed cornstalk to pass through a sieve of 100-500 mesh, and obtaining the cornstalk powder for reservation; (2) mixing modification of raw materials: first soaking the cornstalk powder in NaOH water solution of 5mol/L, then washing the cornstalk powder until the cornstalk powder is neutral, removing non-cellulosic components, drying under the conditions of vacuum, fully mixing the cornstalk powder with macromolecular plastics, filler, an antioxidant, a lubricant and pigments in a vacuum high-speed stirring device after drying, and performing high-pressure spraying of ethanol solution containing an antibacterial agent and an modifying agent on the surface of the mixed materials with stirring for 5-8h under the conditions of vacuum at 90 DEG C to 120 DEG C; (3) obtaining of dry powder by cooling: placing the modified materials in the step (3) in a cooling mixer to perform cooling mixing stirring, discharging the materials when the temperature is about to be 40 DEG C, and obtaining the dry powder; and (4) granulation: sending the dry powder obtained in the step (3) to a granulating machine to perform extrusion granulation.
Description
Technical field
What the present invention relates to is a kind of method of utilizing the cornstalk of the Northeast for raw material production composite high-molecular thermoplastic particle.
Background technology
Only pay attention to the mixing of several kinds of materials or utilization more at present in the macromolecule composite wood-plastic material production process; And the improvement of basic mechanical character; Compatibility and the interface of cmpletely not considering various materials combines situation, interface binding ability and various material in the diffusion at interface, infiltration etc.; Can not guarantee that string can disperse fully in macromolecule resin; Thereby influenced wood/mould the affinity and the bond strength at interface, caused the mechanical property of macromolecule composite wood-plastic material and other serviceabilities lower.
Patent 200610070215.6 discloses a kind of method of utilizing crop straw to produce macromolecule composite wood-plastic material; Its method is with crushed stalk and the dry straw powder that gets; The straw powder is carried out impregnation process, and dry then modification straw powder is that other raw materials of leading carry out the high-speed mixing cooling and mixing and get dry mash with modification straw powder and thermoplastic resin; Dry mash is carried out extruding pelletization; With the material extrusioning shaping after the granulation, can make macromolecule composite wood-plastic material again, but there is following shortcoming in it: because cellulose, hemicellulose and content of lignin in every type the agricultural plant are different; The surface treatment that the modifier of the unified dosage of employing carries out the straw powder has improved production cost (because the price comparison of various modifier is high) on the one hand; Also can cause the pollution of environment on the other hand, because mostly various modifier is chemicals, if burn or utilization can cause environment once more pollution.
Patent 200910113219.1 discloses a kind of preparation method of cotton stalk composite polymer thermoplastic resin particle, and it at first carries out cotton stalk end-grain cutting, fragmentation, rubs silk, grinds to form 80～120 purpose cotton stalk powders, moisture content≤2%; Secondly cotton stalk powder is dared into agitating device for 100 parts, and to add concentration be 5～10 parts of 5% NaOH, stir at normal temperatures after 12 hours and filter; Then remove filtrating, add concentration and be 10～30 parts of 0.7% azobisisobutyronitriles, under 75～80 ℃ of temperature, stir 60min again; Secondly be to add 2～5 parts of styrene, 4～10 parts of methyl methacrylates again, under 90～100 0C temperature, stir 90min again; Get final product after the cooling at last.The shortcoming of its existence is: the one, and the pretreatment process of cotton stalk is more, has increased production cost; The 2nd, the cycle of production is long, has reduced production efficiency.
The Northeast is one of main Maize Production district of China, and the fundamental component of maize straw is cellulose, hemicellulose and lignin etc., and its content is respectively 32%, 27.82% and 15.42%.The macromolecular polysaccharide that cellulose is made up of glucose, water insoluble and common organic solvents is important paper making raw material.Hemicellulose mainly is made up of wood sugar, arabinose, galactolipin, mannose, is one of main component of wood pulp; Lignin is a kind of complicated phenol polymer that is formed by four kinds of alcohol monomers (to tonquinol, coniferyl alcohol, 5-hydroxyl coniferyl alcohol, sinapinic alcohol), can be used as water reducer, refractory material and breeze binding agent etc.Its development and use always are hot technology.
Summary of the invention
The deficiency that the present invention is directed to prior art provides a kind of method that adopts cornstalk to make the composite high-molecular plastic grain, the good product performance that its production procedure is relatively shorter, production efficiency is high, produce.
For realizing above-mentioned purpose, the present invention adopts following technical scheme, the present invention includes following steps:
(1) corn straw powder preparation: adopt size reduction machinery directly to pulverize cornstalk, and cross the 100-500 mesh sieve, obtain corn straw powder, subsequent use;
(2) raw material is mixed and modified: earlier corn straw powder is washed after the 5mol/LNaOH aqueous solution soaking to neutral; Remove the non-cellulose composition; Oven dry under vacuum condition then; Fully mix in the vacuum high-speed mixing equipment with high molecule plastic, filler, anti-oxidant, lubricant, pigment the oven dry back, and the high-pressure injection of under 90 ℃ of-120 ℃ of conditions of vacuum, carrying out 5-8 hour subsequently while stirring contains the surface of the ethanolic solution of antiseptic and modifier to mixed material;
(3) cool off dry powder: the modification material of step (3) is put into cooling mixing machine carries out cooling and mixing and stir, when treating near 40 ℃ of temperature material is emitted, promptly get dry powder;
(4) granulation: step (3) gained dry powder is sent in list/dual-screw pelletizer, carried out extruding pelletization.
Preferably; 90-120 under the described vacuum condition ℃ temperature divided for three steps realized; At first be the stirring and the high-pressure injection process of under 90 ℃ of conditions, carrying out 1-2 hour; Next is the stirring and the high-pressure injection process of carrying out under the 100-110 ℃ of condition 3-4 hour, is the stirring and the high-pressure injection process of carrying out under the 110-120 ℃ of condition 1-2 hour at last; To guarantee the abundant modification in early stage of raw material, mid-term, reacted on modification limit in limit, the abundant reaction in later stage, thus make each performance of product reach optimal effectiveness.
Beneficial effect of the present invention:
The present invention is in the following border ring modification of vacuum high-temperature condition of high voltage; Omitted the preparatory modification procedure of raw material; And owing to be that high-pressure injection is constantly being stirred on the mixed material of upset; Can be so that modifier be given full play to modifying function, the adhesion of fortifying fibre element and wood powder and high molecule plastic molecule;
In addition,, saved the production cycle, improved production efficiency, also reduced production cost because the present invention carries out modification and reaction simultaneously, and each function admirable of product of also making than prior art of the product quality that makes at last.
The specific embodiment
Below in conjunction with embodiment the present invention is further described, following each embodiment only is used to explain the present invention, to not restriction of the present invention.
The present invention includes following steps:
(1) corn straw powder preparation: adopt size reduction machinery directly to pulverize cornstalk, and cross the 100-500 mesh sieve, obtain corn straw powder, subsequent use;
(2) raw material is mixed and modified: earlier corn straw powder is washed after the 5mol/LNaOH aqueous solution soaking to neutral; Remove the non-cellulose composition; Oven dry under vacuum condition then; Fully mix in the vacuum high-speed mixing equipment with high molecule plastic, filler, anti-oxidant, lubricant, pigment the oven dry back; The surface that the high-pressure injection of under 90 ℃ of-120 ℃ of conditions of vacuum, carrying out 5-8 hour subsequently while stirring contains that quaternary ammonium salt active antibacterial monomer weight content is 8%, oxazolidine ketone active antibacterial monomer weight content is 5%, the organosiloxane volume content is 2% ethanol solution to mixed material, the consumption of ethanol solution is 10% of a straw grain weight amount; 90-120 under the described vacuum condition ℃ temperature divided for three steps realized; At first be the stirring and the high-pressure injection process of under 90 ℃ of conditions, carrying out 1-2 hour; Next is the stirring and the high-pressure injection process of carrying out under the 100-110 ℃ of condition 3-4 hour, is the stirring and the high-pressure injection process of carrying out under the 110-120 ℃ of condition 1-2 hour at last; To guarantee the abundant modification in early stage of raw material, mid-term, reacted on modification limit in limit, the abundant reaction in later stage, thus make each performance of product reach optimal effectiveness.
(3) cool off dry powder: the modification material of step (3) is put into cooling mixing machine carries out cooling and mixing and stir, when treating near 40 ℃ of temperature material is emitted, promptly get dry powder;
(4) granulation: step (3) gained dry powder is sent in list/dual-screw pelletizer, carried out extruding pelletization.
Claims (4)
1. method that adopts cornstalk to make the composite high-molecular plastic grain is characterized in that:
May further comprise the steps:
(1) corn straw powder preparation: adopt size reduction machinery directly to pulverize cornstalk, and cross the 100-500 mesh sieve, obtain corn straw powder, subsequent use;
(2) raw material is mixed and modified: earlier corn straw powder is washed after the 5mol/LNaOH aqueous solution soaking to neutral; Remove the non-cellulose composition; Oven dry under vacuum condition then; Fully mix in the vacuum high-speed mixing equipment with high molecule plastic, filler, anti-oxidant, lubricant, pigment the oven dry back, and the high-pressure injection of under 90 ℃ of-120 ℃ of conditions of vacuum, carrying out 5-8 hour subsequently while stirring contains the surface of the ethanolic solution of antiseptic and modifier to mixed material;
(3) cool off dry powder: the modification material of step (3) is put into cooling mixing machine carries out cooling and mixing and stir, when treating near 40 ℃ of temperature material is emitted, promptly get dry powder;
(4) granulation: step (3) gained dry powder is sent in list/dual-screw pelletizer, carried out extruding pelletization.
2. the method for claim 1; It is characterized in that:; 90-120 under the described vacuum condition ℃ temperature divided for three steps realized; At first being the stirring and the high-pressure injection process of under 90 ℃ of conditions, carrying out 1-2 hour, secondly is the stirring and the high-pressure injection process of carrying out under the 100-110 ℃ of condition 3-4 hour, is the stirring and the high-pressure injection process of carrying out under the 110-120 ℃ of condition 1-2 hour at last; To guarantee the abundant modification in early stage of raw material, mid-term, reacted on modification limit in limit, the abundant reaction in later stage, thus make each performance of product reach optimal effectiveness.
3. according to claim 1 or claim 2 method is characterized in that: may further comprise the steps:
(1) corn straw powder preparation: adopt size reduction machinery directly to pulverize cornstalk, and cross the 100-500 mesh sieve, obtain corn straw powder, subsequent use;
(2) raw material is mixed and modified: earlier corn straw powder is washed after the 5mol/LNaOH aqueous solution soaking to neutral; Remove the non-cellulose composition; Oven dry under vacuum condition then; Fully mix in the vacuum high-speed mixing equipment with high molecule plastic, filler, anti-oxidant, lubricant, pigment the oven dry back; The surface that the high-pressure injection of under 90 ℃ of-120 ℃ of conditions of vacuum, carrying out 5-8 hour subsequently while stirring contains that quaternary ammonium salt active antibacterial monomer weight content is 8%, oxazolidine ketone active antibacterial monomer weight content is 5%, the organosiloxane volume content is 2% ethanol solution to mixed material, the consumption of ethanol solution is 10% of a straw grain weight amount; 90-120 under the described vacuum condition ℃ temperature divided for three steps realized; At first be the stirring and the high-pressure injection process of under 90 ℃ of conditions, carrying out 1-2 hour; Next is the stirring and the high-pressure injection process of carrying out under the 100-110 ℃ of condition 3-4 hour, is the stirring and the high-pressure injection process of carrying out under the 110-120 ℃ of condition 1-2 hour at last; To guarantee the abundant modification in early stage of raw material, mid-term, reacted on modification limit in limit, the abundant reaction in later stage, thus make each performance of product reach optimal effectiveness.
(3) cool off dry powder: the modification material of step (3) is put into cooling mixing machine carries out cooling and mixing and stir, when treating near 40 ℃ of temperature material is emitted, promptly get dry powder;
(4) granulation: step (3) gained dry powder is sent in list/dual-screw pelletizer, carried out extruding pelletization.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210088623.XA CN102626964B (en) | 2012-03-30 | 2012-03-30 | Method adopting cornstalk to manufacture composite macromolecular plastic particles |
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| CN201210088623.XA CN102626964B (en) | 2012-03-30 | 2012-03-30 | Method adopting cornstalk to manufacture composite macromolecular plastic particles |
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| CN102626964A true CN102626964A (en) | 2012-08-08 |
| CN102626964B CN102626964B (en) | 2014-04-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875976A (en) * | 2020-08-12 | 2020-11-03 | 界首市鸿鑫塑业有限公司 | Antibacterial and deodorant plastic composite particle and preparation method thereof |
| CN112410091A (en) * | 2020-10-10 | 2021-02-26 | 北京林业大学 | Biomass compact forming method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09225942A (en) * | 1996-02-26 | 1997-09-02 | Mabuchi:Kk | Method of recovering waste plastic and recovering machine |
| CN101475750A (en) * | 2009-01-24 | 2009-07-08 | 新疆远方置业投资有限公司 | Cotton stalk composite polymer thermoplastic resin particle and preparation thereof |
| CN201907163U (en) * | 2010-11-15 | 2011-07-27 | 江苏美芝隆机械有限公司 | Plastic extrusion unit |
-
2012
- 2012-03-30 CN CN201210088623.XA patent/CN102626964B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09225942A (en) * | 1996-02-26 | 1997-09-02 | Mabuchi:Kk | Method of recovering waste plastic and recovering machine |
| CN101475750A (en) * | 2009-01-24 | 2009-07-08 | 新疆远方置业投资有限公司 | Cotton stalk composite polymer thermoplastic resin particle and preparation thereof |
| CN201907163U (en) * | 2010-11-15 | 2011-07-27 | 江苏美芝隆机械有限公司 | Plastic extrusion unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111875976A (en) * | 2020-08-12 | 2020-11-03 | 界首市鸿鑫塑业有限公司 | Antibacterial and deodorant plastic composite particle and preparation method thereof |
| CN112410091A (en) * | 2020-10-10 | 2021-02-26 | 北京林业大学 | Biomass compact forming method |
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| CN102626964B (en) | 2014-04-30 |
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