CN104774369A - Method for preparing polyethylene-based wood-plastic composite material by using peanut shell powder - Google Patents

Method for preparing polyethylene-based wood-plastic composite material by using peanut shell powder Download PDF

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Publication number
CN104774369A
CN104774369A CN201510199925.8A CN201510199925A CN104774369A CN 104774369 A CN104774369 A CN 104774369A CN 201510199925 A CN201510199925 A CN 201510199925A CN 104774369 A CN104774369 A CN 104774369A
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temperature
polyethylene
plastic composite
composite material
minutes
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李欣
凌敏
李静静
黄超
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Guilin University of Technology
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Guilin University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a method for preparing a polyethylene-based wood-plastic composite material by using peanut shell powder. The method comprises the steps of weighing raw materials, namely peanut shell powder, ultralow-density polyethylene, tert-butyl peroxybenzoate, dibutyl tin dilaurate, polyethylene wax, diethyl phthalate and octyl tin maleate, according to the following mass ratio of (20-50): (20-50): (0.05-1.5): (0.02-1.2): (10-15): (2-7): (0.5-4), uniformly mixing the raw materials in a high-speed stirrer so as to prepare a mixed material, then, reacting and extruding in a twin-screw extruder so as to prepare an extruded material, and pressing a die containing the extruded material on a plate vulcanizing machine, thereby preparing the polyethylene-based wood-plastic composite material. According to the method disclosed by the invention, the operation is simple, the waste is utilized, and large-scale popularization and application are facilitated; the prepared polyethylene-based wood-plastic composite material is non-toxic and environment-friendly, is excellent in comprehensive performance and easy in processing and can replace the traditional timber, thereby having a broad application prospect.

Description

A kind of method utilizing peanut hull meal to prepare polyethylene based wood-plastic composite material
Technical field
The invention belongs to wood plastic composite preparing technical field, particularly a kind of method utilizing peanut hull meal to prepare polyethylene based wood-plastic composite material.
Background technology
Containing wood powder and thermoplastic cement raw material in wood plastic composite; thermoplastic cement raw material wherein can adopt the dead meal of industry or life; Pericarppium arachidis hypogaeae is as the tankage of agricultural-food; abundant source is had in China; according to the study, containing a large amount of organic compound in Pericarppium arachidis hypogaeae, as xylogen, Mierocrystalline cellulose, protein, Sitosterol, saponin etc.; its powdered granule formed after pulverizer is pulverized or be Powderedly called peanut hull meal, can be used as the wood powder of wood plastic composite.From the angle of raw materials for production, lignin plastics goods slow down and eliminate the public hazards pollution of plastic refuse, also eliminate Pericarppium arachidis hypogaeae and pile up and burn the pollution brought to environment.Matrix material has had the advantage of timber and plastics concurrently simultaneously: 1. good processing characteristics.Wood plastic composite includes plastics and fiber, therefore, has the processing characteristics that same timber is similar, can saw, can follow closely, can dig, and use carpenter's utensil to complete, and nail-holding ability is obviously better than other synthetic materialss.Mechanical property is better than wood materials.Nail-holding ability is generally 3 times of timber, is 5 times of shaving board.2. good strength property.Wood plastic composite includes plastics, thus has good Young's modulus.In addition, due to including fiber and through fully mixing with plastics, thus there is the resistance to compression suitable with hardwood, the physical and mechanical properties such as counter-bending, and its wearing quality is obviously better than normal wood material.Surface hardness is high, is generally 2 ~ 5 times of timber.3. there is water-fast, corrosion resistant performance, long service life.Wood-plastic material and products thereof, can anti-strong acid-base, water-fast, corrosion-resistant compared with timber, and not bacterial growth, is not easily damaged by worms, not long fungi.Long service life, can reach more than 50 years.4. excellent adjustable performance.By auxiliary agent, the changes such as plastics can be polymerized, foam, solidify, modification, thus the characteristic such as density, intensity changing Wood-plastic material, can also reach anti-aging, anti-electrostatic, the particular requirement such as fire-retardant.
Because wood plastic composite has so many performance, just decide it will be widely used.1. construction industry.The floor of making by Wood Fiber Composites than superior many in low wood fibre board performance at present, not breathing, waterproof, surface aesthetic.If meet material for multilayer coextrusion section bar, internal layer adopts reclaimed materials, and outer employing virgin material, the every mechanical property of the goods made can compare favourably with hardwood products.2. the application of automobile industry.In recent years, Wood plastic boards, with its rational price, superior performance, is applied and is increased in automobile decoration material, as automobile door-plate, after put thing case, luggage case sidewall, seat plate etc.3. other industry.Except traditional industry, the Application Areas of matrix material constantly expands, started at present apply as pallet, flowerpot, handle for tool, office appliance, attack the engine components such as fast highway route marker, acoustic board and audio amplifier.
As everyone knows, polyethylene is one of four large general-purpose plastics in macromolecular material, and its consumption accounts for 60%.Along with the continuous expansion of polyethylene consumption market, the continuous variation of consumption kind, its poly waste amount is also in continuous increase.At present, the waste of the upper recoverable of annual society of China about has 1Mt, and what reality utilized about has 0.2Mt, 0.8Mt is also had to fail to be recycled, major part waste is disposed with land-fill method, so not only causes secondary pollution, also result in the profligacy of material.Along with science and technology, constantly progress and demand for energy constantly increase, how sooner, the recycling work relationship of carrying out waste better the rich and powerful of country and progress, and one of the recycling solving polyethylene waste important content during to be all waste thing recycle.
Summary of the invention
The object of this invention is to provide a kind of method utilizing peanut hull meal to prepare polyethylene based wood-plastic composite material.
Concrete steps are:
(1) raw material is taken according to following mass ratio, peanut hull meal: ultra-low density polyethylene: peroxidized t-butyl perbenzoate: dibutyl tin laurate: polyethylene wax: diethyl phthalate: toxilic acid tin octylate=20 ~ 50:20 ~ 50:0.05 ~ 1.5:0.02 ~ 1.2:10 ~ 15:2 ~ 7:0.5 ~ 4, raw material is mixed on homogenizer, the rotating speed of homogenizer is 3000 ~ 6000 revs/min, obtained mixture.
(2) by mixture reactive extrursion in twin screw extruder that step (1) is obtained, extruder temperature is set to 160 ~ 190 DEG C, and rotating speed is 400 ~ 600 revs/min, and the residence time of material in screw rod is 3 ~ 5 minutes, obtained extruded material.
(3) vulcanizing press is heated, the temperature arranging top plate is 195 DEG C, the temperature of lower bolster is 195 DEG C, treat that temperature rises to the temperature of setting, constant temperature 10 minutes, mould to be placed between two templates preheating 30 minutes, then mould is opened, the extruded material that step (2) is obtained is put into the die cavity of mould, to cover in template that mould puts it to vulcanizing press preheating again 20 minutes, carry out first time exhaust, mold pressing 10 minutes under 8 ~ 10Mpa after exhaust, carry out second time exhaust again, then mold pressing 10 minutes under 8 ~ 10Mpa, cool, treat that temperature drops to 40 DEG C, pressure release, take out mould, and open, the plate be pressed into is taken out, naturally cooling under room temperature, i.e. obtained polyethylene based wood-plastic composite material.
Described peanut hull meal is the powdery granule formed after pulverizer is pulverized by Pericarppium arachidis hypogaeae, the aqueous sodium hydroxide solution being 20 ~ 30% through mass percent concentration again soaks alkalinisation treatment 2 ~ 4 hours, alkalization temperature is 35 ~ 45 DEG C, and then with distilled water wash 5 ~ 6 times, alkali on removing peanut hull meal and other impurity, last at 100 DEG C drying treatment 7 hours, obtained particle diameter is 50 ~ 70 object peanut hull meals.
The inventive method is simple to operate, utilization of waste material, is easy to large-scale promotion, and obtained polyethylene based wood-plastic composite material asepsis environment-protecting, high comprehensive performance, easily processes, and can substitute traditional timber, have a extensive future.
Embodiment
embodiment:
(1) raw material is taken according to following mass ratio, peanut hull meal: ultra-low density polyethylene: peroxidized t-butyl perbenzoate: dibutyl tin laurate: polyethylene wax: diethyl phthalate: toxilic acid tin octylate=35:35:0.8:0.6:12:5:2.4, raw material is mixed on homogenizer, the rotating speed of homogenizer is 4500 revs/min, obtained mixture.
(2) by mixture reactive extrursion in twin screw extruder that step (1) is obtained, extruder temperature is set to 175 DEG C, and rotating speed is 500 revs/min, and the residence time of material in screw rod is 4 minutes, obtained extruded material.
(3) vulcanizing press is heated, the temperature arranging top plate is 195 DEG C, the temperature of lower bolster is 195 DEG C, treat that temperature rises to the temperature of setting, constant temperature 10 minutes, mould to be placed between two templates preheating 30 minutes, then mould is opened, the extruded material that step (2) is obtained is put into the die cavity of mould, to cover in template that mould puts it to vulcanizing press preheating again 20 minutes, carry out first time exhaust, mold pressing 10 minutes under 9Mpa after exhaust, carry out second time exhaust again, then mold pressing 10 minutes under 9Mpa, cool, treat that temperature drops to 40 DEG C, pressure release, take out mould, and open, the plate be pressed into is taken out, naturally cooling under room temperature, i.e. obtained polyethylene based wood-plastic composite material.
Described peanut hull meal is the powdery granule formed after pulverizer is pulverized by Pericarppium arachidis hypogaeae, the aqueous sodium hydroxide solution being 25% through mass percent concentration again soaks alkalinisation treatment 3 hours, alkalization temperature is 30 DEG C, and then with distilled water wash 6 times, alkali on removing peanut hull meal and other impurity, last at 100 DEG C drying treatment 7 hours, obtained particle diameter is 60 object peanut hull meals.
The shock strength of the polyethylene based wood-plastic composite material that the present embodiment obtains is 4.985 KJ/m 2, tensile strength is 51.377 MPa, flexural strength 45.021 KJ/m 2, water-intake rate is 3.078%, all comparatively excellent.

Claims (1)

1. utilize peanut hull meal to prepare a method for polyethylene based wood-plastic composite material, it is characterized in that concrete steps are:
(1) raw material is taken according to following mass ratio, peanut hull meal: ultra-low density polyethylene: peroxidized t-butyl perbenzoate: dibutyl tin laurate: polyethylene wax: diethyl phthalate: toxilic acid tin octylate=20 ~ 50:20 ~ 50:0.05 ~ 1.5:0.02 ~ 1.2:10 ~ 15:2 ~ 7:0.5 ~ 4, raw material is mixed on homogenizer, the rotating speed of homogenizer is 3000 ~ 6000 revs/min, obtained mixture;
(2) by mixture reactive extrursion in twin screw extruder that step (1) is obtained, extruder temperature is set to 160 ~ 190 DEG C, and rotating speed is 400 ~ 600 revs/min, and the residence time of material in screw rod is 3 ~ 5 minutes, obtained extruded material;
(3) vulcanizing press is heated, the temperature arranging top plate is 195 DEG C, the temperature of lower bolster is 195 DEG C, treat that temperature rises to the temperature of setting, constant temperature 10 minutes, mould to be placed between two templates preheating 30 minutes, then mould is opened, the extruded material that step (2) is obtained is put into the die cavity of mould, to cover in template that mould puts it to vulcanizing press preheating again 20 minutes, carry out first time exhaust, mold pressing 10 minutes under 8 ~ 10Mpa after exhaust, carry out second time exhaust again, then mold pressing 10 minutes under 8 ~ 10Mpa, cool, treat that temperature drops to 40 DEG C, pressure release, take out mould, and open, the plate be pressed into is taken out, naturally cooling under room temperature, i.e. obtained polyethylene based wood-plastic composite material,
Described peanut hull meal is the powdery granule formed after pulverizer is pulverized by Pericarppium arachidis hypogaeae, the aqueous sodium hydroxide solution being 20 ~ 30% through mass percent concentration again soaks alkalinisation treatment 2 ~ 4 hours, alkalization temperature is 35 ~ 45 DEG C, and then with distilled water wash 5 ~ 6 times, alkali on removing peanut hull meal and other impurity, last at 100 DEG C drying treatment 7 hours, obtained particle diameter is 50 ~ 70 object peanut hull meals.
CN201510199925.8A 2015-04-25 2015-04-25 Method for preparing polyethylene-based wood-plastic composite material by using peanut shell powder Pending CN104774369A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106867093A (en) * 2017-03-15 2017-06-20 江西乐富军工装备有限公司 Military rotational moulding firearms pack composite material special
CN110423395A (en) * 2019-08-22 2019-11-08 北京林业大学 A kind of pretreatment modification rice husk/high-density polyethylene composite material and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李思益 等编: "《皮革制品机械原理及构造》", 31 January 2006 *
齐贵亮 主编: "《塑料挤出成型技术》", 30 September 2012 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106867093A (en) * 2017-03-15 2017-06-20 江西乐富军工装备有限公司 Military rotational moulding firearms pack composite material special
CN110423395A (en) * 2019-08-22 2019-11-08 北京林业大学 A kind of pretreatment modification rice husk/high-density polyethylene composite material and preparation method thereof

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Application publication date: 20150715