CN102863809A - Plastic wood material and preparation method thereof - Google Patents

Plastic wood material and preparation method thereof Download PDF

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Publication number
CN102863809A
CN102863809A CN2011101892017A CN201110189201A CN102863809A CN 102863809 A CN102863809 A CN 102863809A CN 2011101892017 A CN2011101892017 A CN 2011101892017A CN 201110189201 A CN201110189201 A CN 201110189201A CN 102863809 A CN102863809 A CN 102863809A
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China
Prior art keywords
plastic
wood section
section according
crop straw
wood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011101892017A
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Chinese (zh)
Inventor
程青民
黄旭江
张翔
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Shenzhen Gem High Tech Co Ltd
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Shenzhen Gem High Tech Co Ltd
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Priority to CN2011101892017A priority Critical patent/CN102863809A/en
Publication of CN102863809A publication Critical patent/CN102863809A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • 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
    • 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
    • B29C2948/9259—Angular 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
    • 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
    • B29C2948/92895—Barrel or housing

Abstract

The invention relates to a composite material and particularly relates to a plastic wood material and a method for preparing the material by crop straw and waste plastic. The plastic wood material disclosed by the invention is prepared from the following components by weight: 20-36% of waste plastics, 25-70% of crop straws, 5-44% of fire retardants, 1-10% of bulking agent, and 0.1-3% of lubricating agent, 0.5-3% of plasticizer, 0.01-1% of antioxidant and 0.5-3% of coloring agent. The performance of According to the plastic wood material disclosed by the invention, the performance is more excellent than that of the wood; the crop straw and the waste plastic are utilized for producing the plastic wood material, and the harmless resource utilization of the crop straw and the waste plastic is fully achieved, and the material has the advantages of being environment-friendly, economical and wide in material supply.

Description

A kind of plastic-wood section and preparation method thereof
Technical field
The present invention relates to matrix material, be specifically related to a kind of plastic-wood section and utilize agricultural crop straw and waste or used plastics prepares the method for this section bar.
Background technology
Wood plastic composite is a kind of novel environment-friendly composite material, and it is composite that its utilizes discarded various natural wooden fibers and plastics to carry out, and adds special addition agent, through extrude make not only like timber but also be better than the novel environment-friendly composite material of timber.This kind material have good stability of the dimension, specific tenacity high, the advantage such as can repeatedly recycle, be widely used in the fields such as indoor and outdoor building, transportation, packing.
China is large agricultural country, annual agricultural crop straw output is up to tens tons, this is a huge renewable resources, make the environmental protection plastic-wood section with agricultural crop straw, being that the stalk resource utilization has the technology of market development potentiality and industrialization prospect most, is one of optimal path that solves the agricultural crop straw comprehensive utilization.
At present, waste or used plastics is one of major source of pollutant of China's environmental pollution, have every year the waste or used plastics of up to ten million ton to be used as rubbish and abandon, and plastics itself is the material of hard degradation, therefore environment are caused permanent pollution.Agricultural crop straw especially Cotton Stalk mainly is used as fertilizer by burning at present and is come with or directly discarded, and is taken as rubbish fully and processes, and is not utilized effectively.
Summary of the invention
The objective of the invention is in order to solve existing crop stalk reserves large, zero pollutes resource utilization difficulty and waste or used plastics causes the problem of huge pollution to environment, provides a kind of and utilizes agricultural crop straw and regenerating waste used plastics-production to be exactly like timber in appearance and performance is better than plastic-wood section of timber and preparation method thereof.
The present invention for the scheme that provides is provided is: a kind of plastic-wood section is made by the raw material that contains following mass percent component:
Waste or used plastics 20%～36%, agricultural crop straw 25%～70%, fire retardant 5%～44%, expanding material 1%～10%, lubricant 0.1%～3%, softening agent 0.5%～3%, oxidation inhibitor 0.01%～1%, tinting material 0.5%～3%.
Preferably,
Described agricultural crop straw is cotton stem;
Described agricultural crop straw also can be wheat stalk, sawdust, wood chip, Pericarppium arachidis hypogaeae, Exocarpium cocois (Cocos nucifera L), flax, rice husk, bamboo bits, wheat straw, soybean hulls, bagasse; Described agricultural crop straw also can be two kinds or two or more combinations in cotton stem, wheat stalk, sawdust, wood chip, Pericarppium arachidis hypogaeae, Exocarpium cocois (Cocos nucifera L), flax, rice husk, bamboo bits, wheat straw, soybean hulls, the bagasse.
Described waste or used plastics is one or more the combination in polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) (ABS), the polycarbonate (PC);
Described fire retardant is the phosphorus-nitrogen containing flame retardant such as two (phenylbenzene) phosphoric acid ester (RDP) of tetraphenyl (bisphenol-A) bisphosphate (BDP), Resorcinol, ammonium polyphosphate (APP), triphenylphosphate (TPP) or several mixture in them;
Described expanding material is one or more the combination in Research of Grafting Malaic Anhydride Onto Polyethylene, polypropylene grafted maleic anhydride, ABS grafted maleic anhydride, polystyrene graft maleic anhydride, titanic acid ester, Aluminate, isocyanic ester, the silane coupling agent, and described silane coupling agent is preferably hexamethyldisilazane, hexamethyldisiloxane, vinyl three (methoxy ethoxy) silane, vinyltrimethoxy silane;
Described lubricant is stearic acid, Metallic stearates, ethylene bis stearamide, fatty chloroflo, oxidic polyethylene; Metallic stearates is preferably sodium stearate, calcium stearate or Zinic stearas;
Described softening agent is dioctyl phthalate (DOP) or dibutyl phthalate;
Wherein said oxidation inhibitor is 2,2 '-one or more combination in methylene radical-two (4-methyl-6-tert-butylphenol) (antioxidant 1010s), irgasfos 168, antioxidant 264, anti-oxidant DLTP, anti ultraviolet agent UV531, described tinting material is titanium dioxide, carbon black, iron oxide red, iron oxide yellow, titanium viridescent or titanium ultramarine.
The present invention also provides the preparation method of above-mentioned plastic-wood section, and the method may further comprise the steps:
Step 1, with the waste or used plastics that reclaims sort, after fragmentation, cleaning, drying treatment, it is for subsequent use to join in the high-speed mixer abundant mixing, mixing time is controlled at 5～10 minutes;
Step 2: with the agricultural crop straw drying, be broken into 50～100 purpose crop branch fiber powder;
Step 3: will be through the plastics of step 1 processing and crop branch fiber powder and the abundant mixing in high-speed mixer of other component in the prescription of step 2 processing, mixing time is controlled at 10～20 minutes;
Step 4: will be through the twin screw extruder melt blending of the compound behind the step 3 mixing, extruding pelletization, processing temperature is 150～250 ℃, rotating speed is 160～200 rev/mins;
Step 5: the pellet that will make through step 4 adds extrusion moulding in the forcing machine.
Preferably, the processing temperature of step 4 is 180～220 ℃, and rotating speed is 170～190 rev/mins.
Beneficial effect of the present invention:
(1) the present invention utilizes agricultural crop straw and waste or used plastics to produce plastic-wood section, fully reaches the harmless resource utilization utilization of agricultural crop straw and waste or used plastics, the advantages such as that this preparation method has is inexpensive, environmental protection, economic benefit is high, raw material supply is extensive;
(2) the present invention adopts extrusion moulding, and the agricultural crop straw fragmentation is directly mixed with waste or used plastics afterwards, need not to carry out pre-treatment, can significantly reduce the moulding process time, reduces production costs.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiment, and scope of the present invention is not subjected to the restriction of these embodiment.
Embodiment 1
Feed composition by weight
29 parts of high density polyethylene(HDPE)s (HDPE), 43 parts of cotton stem fiber powders, 3 parts in vinyl three (methoxy ethoxy) silane, 6 parts of PE grafted maleic anhydrides, 15 parts of ammonium polyphosphates, 2 parts, 0.8 part antioxidant 1010 of Zinic stearas and 1.2 parts of tinting materials.
Cotton stem fiber powder and vinyl three (methoxy ethoxy) silane, HDPE, PE grafted maleic anhydride, ammonium polyphosphate, Zinic stearas, antioxidant 1010 and tinting material philosophy are joined high-speed mixer to mixing; then mixture is reacted to extrude in twin screw extruder and make pellet; 190 ℃ of screw rod melt temperatures; 180 rev/mins of rotating speeds; after the extruded material cooling; through the dicing machine pelletizing, obtain pellet.
With carrying out extrusion moulding in the gained pellet adding forcing machine, namely get plastic-wood section of the present invention, prepared shape bending intensity reaches 26MPa after testing.
Embodiment 2
Feed composition by weight
30 parts of polypropylene (PP), 42 parts of wheat stalk fiber powders, 4 parts of vinyltrimethoxy silanes, 6 parts of PP grafted maleic anhydrides, 14 parts of ammonium polyphosphates, 2 parts, 0.8 part antioxidant 1010 of Zinic stearas and 1.2 parts of tinting materials.
Wheat stalk fiber powder, vinyltrimethoxy silane, PP, PP grafted maleic anhydride, ammonium polyphosphate, Zinic stearas, antioxidant 1010 and tinting material philosophy are joined high-speed mixer to mixing; then mixture is reacted to extrude in twin screw extruder and make pellet; 200 ℃ of screw rod melt temperatures; 180 rev/mins of rotating speeds; after the extruded material cooling; through the dicing machine pelletizing, obtain pellet.
With carrying out extrusion moulding in the gained pellet adding forcing machine, namely get plastic-wood section of the present invention, the flexural strength of prepared section bar reaches 51MPa after testing.
Embodiment 3
With the waste or used plastics that reclaims sort, after fragmentation, cleaning, drying treatment, it is for subsequent use to join in the high-speed mixer abundant mixing, mixing time is controlled at 5～10 minutes;
With the agricultural crop straw drying, be broken into 50～100 purpose crop branch fiber powder;
By weight, get 2 parts, 0.5 part antioxidant 264 of 13 parts of 6 parts of 3 parts of 42 parts of 32 parts of waste or used plastics, agricultural crop straws, hexamethyldisiloxane, PP grafted maleic anhydrides, triphenylphosphates, sodium stearate and 1.5 parts of tinting material titanium dioxide after step 1 is processed.
Said components is abundant mixing in high-speed mixer, and mixing time is controlled at 10～20 minutes;
Go on foot the compound twin screw extruder melt blending behind the mixing then, extruding pelletization, processing temperature is 180～220 ℃, rotating speed is 170～190 rev/mins;
With the above-mentioned pellet that makes, add extrusion moulding in the forcing machine again.
In above-described embodiment, agricultural crop straw also can be selected sawdust, wood chip, Pericarppium arachidis hypogaeae, Exocarpium cocois (Cocos nucifera L), flax, rice husk, bamboo bits, wheat straw, soybean hulls or bagasse, perhaps several combination in cotton stem, wheat stalk, sawdust, wood chip, Pericarppium arachidis hypogaeae, Exocarpium cocois (Cocos nucifera L), flax, rice husk, bamboo bits, wheat straw, soybean hulls, the bagasse.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (10)

1. a plastic-wood section is characterized in that, is made by the raw material that contains following mass percent component:
Waste or used plastics 20%～36%, agricultural crop straw 25%～70%, fire retardant 5%～44%, expanding material 1%～10%, lubricant 0.1%～3%, softening agent 0.5%～3%, oxidation inhibitor 0.01%～1%, tinting material 0.5%～3%.
2. plastic-wood section according to claim 1 is characterized in that, described agricultural crop straw is cotton stem.
3. plastic-wood section according to claim 1 is characterized in that, described agricultural crop straw is wheat stalk, sawdust, wood chip, Pericarppium arachidis hypogaeae, Exocarpium cocois (Cocos nucifera L), flax, rice husk, bamboo bits, wheat straw, soybean hulls or bagasse.
4. plastic-wood section according to claim 1, it is characterized in that described agricultural crop straw is two kinds or two or more combination in cotton stem, wheat stalk, sawdust, wood chip, Pericarppium arachidis hypogaeae, Exocarpium cocois (Cocos nucifera L), flax, rice husk, bamboo bits, wheat straw, soybean hulls, the bagasse.
5. plastic-wood section according to claim 1 is characterized in that, described waste or used plastics is one or several the combination in polyethylene, polypropylene, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene (ABS), the polycarbonate.
6. plastic-wood section according to claim 1 is characterized in that, described fire retardant is one or several the combination in two (phenylbenzene) phosphoric acid ester of tetraphenyl (bisphenol-A) bisphosphate, Resorcinol, ammonium polyphosphate, the triphenylphosphate;
Described expanding material is one or several the combination in Research of Grafting Malaic Anhydride Onto Polyethylene, polypropylene grafted maleic anhydride, ABS grafted maleic anhydride, polystyrene graft maleic anhydride, titanic acid ester, Aluminate, isocyanic ester, the silane coupling agent;
Described lubricant is one or several the combination in stearic acid, Metallic stearates, ethylene bis stearamide, fatty chloroflo, the oxidic polyethylene;
Described softening agent is dioctyl phthalate (DOP) or dibutyl phthalate.
7. plastic-wood section according to claim 6 is characterized in that, described silane coupling agent is hexamethyldisilazane, hexamethyldisiloxane, vinyl three (methoxy ethoxy) silane or vinyltrimethoxy silane; Described Metallic stearates is sodium stearate, calcium stearate or Zinic stearas.
8. plastic-wood section according to claim 6, it is characterized in that, described oxidation inhibitor is 2,2 '-one or more combination in methylene radical-two (the 4-methyl-6-tert-butylphenols), irgasfos 168, antioxidant 264, anti-oxidant DLTP, anti ultraviolet agent UV531; Described tinting material is titanium dioxide, carbon black, iron oxide red, iron oxide yellow, titanium viridescent or titanium ultramarine.
9. the preparation method of the described plastic-wood section of each claim of claim 1 to 8 is characterized in that, may further comprise the steps:
Step 1, with the waste or used plastics that reclaims sort, after fragmentation, cleaning, drying treatment, it is for subsequent use to join in the high-speed mixer abundant mixing, mixing time is controlled at 5～10 minutes;
Step 2: with the agricultural crop straw drying, be broken into 50～100 purpose crop branch fiber powder;
Step 3: will be through the plastics of step 1 processing and crop branch fiber powder and the abundant mixing in high-speed mixer of other component in the prescription of step 2 processing, mixing time is controlled at 10～20 minutes;
Step 4: will be through the twin screw extruder melt blending of the compound behind the step 3 mixing, extruding pelletization, processing temperature is 150～250 ℃, rotating speed is 160～200 rev/mins;
Step 5: the pellet that will make through step 4 adds extrusion moulding in the forcing machine.
10. the preparation method of plastic-wood section according to claim 9 is characterized in that, the processing temperature of step 4 is 180～220 ℃, and rotating speed is 170～190 rev/mins.
CN2011101892017A 2011-07-07 2011-07-07 Plastic wood material and preparation method thereof Pending CN102863809A (en)

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CN103627193A (en) * 2013-11-01 2014-03-12 安徽环嘉天一再生资源有限公司 Bright type injection moulding wood-plastic composite
CN103756350A (en) * 2013-12-31 2014-04-30 浙江大学宁波理工学院 Method for producing wood plastic material by using wastes
CN103756186A (en) * 2013-12-27 2014-04-30 安徽科焱安全材料股份有限公司 Polyvinyl chloride/acrylonitrile-butadiene-styrene (PVC/ABS) alloy composition, PVC/ABS alloy and preparation method and application thereof
CN104164029A (en) * 2014-08-14 2014-11-26 民勤县华安再生资源开发有限公司 Regenerative and energy-saving wood-plastic composite material building template
CN104327438A (en) * 2014-11-26 2015-02-04 重庆可益荧新材料有限公司 Waste HIPS/PP composite material and preparation method thereof
CN104530598A (en) * 2014-12-24 2015-04-22 王贵孝 Toughness-enhanced wood-plastic flooring produced by utilizing straws and saw dust and process thereof
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Application publication date: 20130109