CN105238088A - Cellulose-based biomass sheet material and preparation method thereof - Google Patents
Cellulose-based biomass sheet material and preparation method thereof Download PDFInfo
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- CN105238088A CN105238088A CN201510725191.2A CN201510725191A CN105238088A CN 105238088 A CN105238088 A CN 105238088A CN 201510725191 A CN201510725191 A CN 201510725191A CN 105238088 A CN105238088 A CN 105238088A
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Abstract
The invention discloses a cellulose-based biomass sheet material comprising the following raw materials, by weight: 25-60 parts of bamboo powder, 0.5-5 parts of a plasticizing modifier, 0.5-3 parts of a coupling agent, 20-70 parts of Bio-PE, 0.1-1 part of a nucleating agent, 1-5 parts of a compatibilizing agent, and 0.5-5 parts of a lubricant. The preparation method of the cellulose-based biomass sheet material comprises the following steps: a blended material of the above raw materials is extruded by a twin-screw extruder, such that granules are obtained; the granules are added into a parallel twin-screw sheet machine, and are prepared into the cellulose-based biomass sheet material through three rollers; and rolling and packaging are carried out. According to the invention, appropriate raw materials are selected and the mass ratio of the raw materials is designed, such that the prepared cellulose-based biomass sheet material is biodegradable and renewable. The material does not pollute the environment, and assists in reducing greenhouse gas emission. The sources of the raw materials are wide, such that the product has high cost performance. Through blistering, the product can be used for manufacturing flowerpot products, electronic packaging containers, trays and the like. The material can be widely applied.
Description
Technical field
The invention belongs to technical field of polymer materials, be specifically related to a kind of cellulose based biomass sheet material and preparation method thereof.
Background technology
Since entering 21 century, environment of preserving our planet, constructs resource recycling society, walks sustainable development path, has become World Focusing focus and urgent task.Biological material main raw material is the agricultural resource from can regenerate every year, as limited, day by day reduce, supplementing of increasingly exhausted non-renewable petroleum resources substitute, and also become the development trend of attracting attention in the whole world.Bio-PE stems from the ethanol refining production with Brazilian sugarcane, and being called as green polyethylene, is a kind of plastics from renewable resources.There is the characteristic identical with petrochemical industry polyethylene and performance, and the poly reclaiming system of available conventional petroleum carries out recycling, replace oil polyethylene with Bio-PE, do not need the input of new plastic apparatus, in practical application, petrochemical industry polyethylene can be substituted completely.Bio-PE and natural biomass materials such as the compounds such as starch, timber, bamboo wood are prepared cellulose based biomass material; namely the mechanical property of material excellence can be ensured; biodegradable object can be reached again; raw material all derives from renewable resources, is beneficial to protection of the environment, saves the energy, realizes Sustainable development.
Starch has been widely used in preparing biomass composite.But the sharply increase of the non-grain consumption of starch, has caused people to the worry of staple food supply.Therefore, find and to originate the natural biomass materials that more horn of plenty, cost are more cheap, become biomass composite realize Sustainable development and must faced by realistic problem.
The annual output of the Mierocrystalline cellulose of poly-polysaccharide is all up to 2 × 10 with starch
11ton, far above 1.8 × 10 of petroleum base macromolecular material
9ton is abundance, with low cost.Timber, bamboo wood all belong to cellulose materials.The fields such as furniture, packaging, car and boat interior trim have been widely used in for Wood-plastic material prepared by raw material with xylon, wood powder.But timber is become a useful person the cycle longer (about 10 ~ 20 years), and China's timber resources relative shortage, restriction is formed to the development of Wood-plastic material.
Compared with timber, bamboo wood growth cycle short (about 2 ~ 3 years), resource relative abundance, particularly Bamboo processing enterprise is flourish, creates a large amount of industrial wood wastes.In the past, Bamboo leftover was mainly used as fuel, greatly reduced the comprehensive utilization ratio of bamboo resource and the added value of bamboo wood.
Summary of the invention
The invention provides a kind of cellulose based biomass sheet material and preparation method thereof, be intended to solve limited, day by day reduce, increasingly exhausted non-renewable petroleum resources problem.Raw material all derives from renewable resources, excellent material performance, biodegradable, is beneficial to protection of the environment, saves the energy, realizes Sustainable development.
Cellulose based biomass sheet material provided by the invention, is made up through extruding-out process of raw material, and described raw material comprises the composition of following parts by weight:
Preferably, described bamboo powder is the bamboo powder of order number 30 ~ 200.
Preferably, described plasticization modifier is one or more arbitrary combination in polyoxyethylene glycol, glycerine, DEDB, terephthalate, tetraoctyl 1,2,4,5-benzenetetra-carboxylate, trimellitic acid fat, epoxidized vegetable oil, citrate or acetyl citrate.
Preferably, described coupling agent is one or more arbitrary combination in silane coupling agent, aluminate coupling agent or titanate coupling agent.
Preferably, described nucleator is one or more arbitrary combination in glucitols transparent nucleater, nucleator in organic phosphate class or hydroxy acid salt nucleator.
Preferably, described compatilizer is one or more arbitrary combination in ethylene-acrylic acid copolymer, epoxy resin or natural emulsion.
Preferably, described lubricant is one or more arbitrary combination in polyethylene wax, white oil, oxidized polyethlene wax or octyl epoxy stearate.
The method of the cellulose based biomass sheet material that the present invention also provides preparation above-mentioned, comprises the steps:
1), according to proportioning, get bamboo powder, add plasticization modifier and carry out modification, temperature is set to 50 ~ 160 DEG C;
2), according to proportioning, under stirring, to step 1) add coupling agent, Bio-PE, nucleator, compatilizer and lubricant in the material of gained, keep temperature consistent with temperature during modification, be cooled to less than 50 DEG C;
3), by step 2) the cooled material that obtains, extruding pelletization, obtains pellet;
4) be, cellulose based biomass sheet material by described pellet extrusion moulding.
As optimal technical scheme, step 3) in cooled material join twin screw extruder extruding pelletization; Step 4) described pellet joins parallel double-screw sheet material machine, is cellulose based biomass sheet material through three roller extrusion mouldings.
Further preferably, the length-to-diameter ratio of described twin screw extruder is 44:1 ~ 52:1, and machine barrel each district temperature is set to 80 DEG C ~ 180 DEG C, and head temperature is set to 130 DEG C ~ 150 DEG C, and screw speed is 200 ~ 250 revs/min; Extruder barrel temperature in described parallel double-screw sheet material machine is set to 140 DEG C ~ 200 DEG C, and die head temperature is set to 170 DEG C ~ 190 DEG C.
The invention has the beneficial effects as follows: selection major ingredient of the present invention is bamboo powder and Bio-PE, all derive from renewable resources, the dependence to Nonrenewable resources can be reduced, and sheet material does not add virulent material in the course of processing, do not produce poisonous and hazardous gas, the whole course of processing is to human body and environmentally friendly.The present invention is by choosing applicable raw material and designing the quality proportioning of each raw material; obtained cellulose based biomass sheet material; excellent material performance; biodegradable; also eliminate bamboo waste material pile up and burn the pollution brought to environment simultaneously, be beneficial to protection of the environment, save the energy, realize Sustainable development.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
The cellulose based biomass sheet material that following examples of the present invention provide, its raw material comprises the composition of following parts by weight:
The process for preparing of bamboo powder is: select mean diameter 75 ~ 500 microns, mean length 0.1 ~ 5 millimeter bamboo powder, by mesh screen classification obtain order number be 30 ~ 200 bamboo powder for subsequent use; In bamboo powder, biodiversity content is less than or equal to 10%.
Bio-PE is the trade mark that braskem company produces is the green HDPE of SHA7260, stems from and refines with Brazilian sugarcane the ethanol produced, have good biological degradability.
Cellulose based biomass sheet material provided by the invention selection comprises bamboo powder, plasticization modifier, coupling agent, Bio-PE, compatilizer, nucleator, lubricant, described plasticization modifier can reduce the viscosity of bamboo powder, material slurry mobility is increased, there is good perviousness; Described coupling agent can improve sheet material processing characteristics, sheet material is had and good anti-tearly draws performance; Described nucleator, for accelerating Bio-PE crystallization rate, increasing crystal density and impel fine grain size, reaches shortening shaping cycle; Described lubricant can improve sheet material oilness and processing characteristics.Design each material proportion by experiment, make the cellulose based biomass sheet material obtained have superperformance.
In following examples, the preparation method of cellulose based biomass sheet material comprises the steps:
1), get the raw materials ready according to the proportioning raw materials of cellulose based biomass sheet material;
2), by bamboo powder join in homogenizer, then add ready plasticization modifier and carry out modification, temperature is set to 50 ~ 160 DEG C, stirs 10 ~ 30min;
3), according to proportioning continue to add ready coupling agent, Bio-PE, nucleator, compatilizer and lubricant, keep temperature consistent with temperature during modification, stir 5 ~ 20min, then release material;
4), by the material of releasing join in cold mixed pot and stir 10 ~ 15min, treat that material is cooled to less than 50 DEG C;
5), cooled material is joined twin screw extruder extruding pelletization.
6), by the pellet after granulation join parallel double-screw sheet material machine, make described cellulose based biomass sheet material through three rollers.
Enumerate 9 embodiments to be below specifically described preparing cellulose based biomass sheet material, feed composition and processing conditions are as following table 1-table 3:
Table 1
Table 2
Table 3
Carry out Performance Detection to the bio-based sheet material obtained by above-described embodiment 1-9, result is as following table 4:
Table 4
The cellulose based biomass sheet properties prepared according to technical solution of the present invention is as can be seen from the above data good, exceedes existing bio-based plastics, and alternative common plastics is used for all kinds of plastic uptake product.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. a cellulose based biomass sheet material, is characterized in that, is made up through extruding-out process of raw material, and described raw material comprises the composition of following parts by weight:
2. cellulose based biomass sheet material as claimed in claim 1, it is characterized in that, described bamboo powder is the bamboo powder of order number 30 ~ 200.
3. cellulose based biomass sheet material as claimed in claim 1, it is characterized in that, described plasticization modifier is one or more arbitrary combination in polyoxyethylene glycol, glycerine, DEDB, terephthalate, tetraoctyl 1,2,4,5-benzenetetra-carboxylate, trimellitic acid fat, epoxidized vegetable oil, citrate or acetyl citrate.
4. cellulose based biomass sheet material as claimed in claim 1, it is characterized in that, described coupling agent is one or more arbitrary combination in silane coupling agent, aluminate coupling agent or titanate coupling agent.
5. cellulose based biomass sheet material as claimed in claim 1, it is characterized in that, described nucleator is one or more arbitrary combination in glucitols transparent nucleater, nucleator in organic phosphate class or hydroxy acid salt nucleator.
6. cellulose based biomass sheet material as claimed in claim 1, it is characterized in that, described compatilizer is one or more arbitrary combination in ethylene-acrylic acid copolymer, epoxy resin or natural emulsion.
7. cellulose based biomass sheet material as claimed in claim 1, it is characterized in that, described lubricant is one or more arbitrary combination in polyethylene wax, white oil, oxidized polyethlene wax or octyl epoxy stearate.
8. prepare the method for the cellulose based biomass sheet material described in any one of claim 1-7, it is characterized in that, comprise the steps:
1), according to proportioning, get bamboo powder, add plasticization modifier and carry out modification, temperature is set to 50 ~ 160 DEG C;
2), according to proportioning, under stirring, to step 1) add coupling agent, Bio-PE, nucleator, compatilizer and lubricant in the material of gained, keep temperature consistent with temperature during modification, be cooled to less than 50 DEG C;
3) be, cellulose based biomass sheet material by described material extrusion moulding.
9. method according to claim 8, is characterized in that, step 2) in cooled material join parallel double-screw sheet material machine, be cellulose based biomass sheet material through three roller extrusion mouldings.
10. method as claimed in claim 9, it is characterized in that, the length-to-diameter ratio of described twin screw extruder is 44:1 ~ 52:1, and machine barrel each district temperature is set to 80 DEG C ~ 180 DEG C, and head temperature is set to 130 DEG C ~ 150 DEG C, and screw speed is 200 ~ 250 revs/min; Extruder barrel temperature in described parallel double-screw sheet material machine is set to 140 DEG C ~ 200 DEG C, and die head temperature is set to 170 DEG C ~ 190 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694230A (en) * | 2016-04-25 | 2016-06-22 | 华东理工大学 | Environment-friendly plastifying biomass composite and preparation method thereof |
| CN106832526A (en) * | 2017-02-24 | 2017-06-13 | 遵义医学院 | A kind of rattan imitating containing biomass and preparation method thereof |
| CN112795084A (en) * | 2020-12-24 | 2021-05-14 | 金发科技股份有限公司 | Wood-plastic composite material with high bio-based content and preparation method and application thereof |
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| CN106832526A (en) * | 2017-02-24 | 2017-06-13 | 遵义医学院 | A kind of rattan imitating containing biomass and preparation method thereof |
| CN112795084A (en) * | 2020-12-24 | 2021-05-14 | 金发科技股份有限公司 | Wood-plastic composite material with high bio-based content and preparation method and application thereof |
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