CN104073011B - A kind of flame-retardant wood-plastic and preparation method thereof - Google Patents

A kind of flame-retardant wood-plastic and preparation method thereof Download PDF

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Publication number
CN104073011B
CN104073011B CN201410308087.9A CN201410308087A CN104073011B CN 104073011 B CN104073011 B CN 104073011B CN 201410308087 A CN201410308087 A CN 201410308087A CN 104073011 B CN104073011 B CN 104073011B
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China
Prior art keywords
district
flame
wood
retardant
plastic
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Application number
CN201410308087.9A
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Chinese (zh)
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CN104073011A (en
Inventor
何军
许世华
李靖
戴东花
严永刚
陈龙
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Zhongshan Saint Lodi New Material Co. Ltd.
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JIANGSU XUHUA SHENGLUODI BUILDING MATERIAL CO Ltd
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Priority to CN201410308087.9A priority Critical patent/CN104073011B/en
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Classifications

    • 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
    • B29B9/12—Making granules characterised by structure or composition
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/72—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
    • 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
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Fireproofing Substances (AREA)

Abstract

The invention discloses a kind of flame-retardant wood-plastic and preparation method thereof, comprise composite flame-retardant agent: 10-20 part; PE:30-35 part; Wood powder: 30-65 part; Lubricant: 3-6 part; Composite flame-retardant agent is pentaerythritol phosphate and the synthetic compound of melamine. Usefulness is: by selecting suitable component and constituent content, optimized technical process simultaneously, obtained a kind of flame-retardant wood-plastic material of superior performance. Adopt the synthetic compound of pentaerythritol phosphate and melamine as composite flame-retardant agent, wherein, melamine is source of the gas, and pentaerythritol phosphate is acid source and charcoal source, as coupling agent, with the hydroxyl generation ester exchange reaction in wood powder, by chemical bonds, thereby increase the mechanical strength of plastic-wood material, significantly reduced the quantity of water imbibition hydroxyl in wood powder simultaneously, make the plastic wood sheet of ultralow water absorption rate, there is again good flame retardant effect simultaneously.

Description

A kind of flame-retardant wood-plastic and preparation method thereof
Technical field
The present invention relates to a kind of Wood-plastic material, be specifically related to a kind of flame-retardant wood-plastic, belong to Material Field.
Background technology
Wood-plastic material is that a kind of PE of utilization and string are mixed into new material, then through extruding, mold pressing, notePenetrating moulding etc. processes as advanced composite material (ACM). Because the wood powder and the plastics that form wood plastic composite all belong toIn combustible material, so this has restricted it in architectural engineering particularly in fire-protection rating to a certain extentApplication in high place.
In order to address this problem, in prior art by mould middle interpolation halogen containing flame-retardant at wood---be mainlyOrganic bromide/Sb2O3 fire retardant, fire-retardant for wood plastic composite, fire resistance is better, but thisWhen fire proofing burning, can produce the gas of a large amount of poisonous and harmful strong and stimulatings, to people's healthy and environmentCause direct, potential and permanent harm. On market, applying more another kind of fire retardant is phosphorus-nitrogen classFire retardant, but this based flame retardant needs the amount of interpolation more in Wood-plastic material, but dispersed and compatibleProperty is poor, thereby flame retarding efficiency is low.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide high, the fire-retardant effect of a kind of mechanical strengthWood-plastic material that fruit is good and preparation method thereof.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
A kind of flame-retardant wood-plastic, the parts by weight that comprise following component and each component are respectively: composite flame-retardant agent:10-20 part; PE:30-35 part; Wood powder: 30-65 part; Lubricant: 3-6 part; Described composite flame-retardant agent isThe compound that pentaerythritol phosphate and melamine are synthetic.
Preferably, in described composite flame-retardant agent, the weight portion of pentaerythritol phosphate is 40-60 part, melamineThe weight portion of amine is 40-60 part, and pentaerythritol phosphate and melamine, at 60 DEG C, are stirred to 3-6h,Make both that chemical reaction occur, products therefrom obtains composite flame-retardant agent through 80 DEG C of vacuum drying 3-6h.
Aforementioned lubricants is one or more of stearic acid, calcium stearate, zinc stearate, paraffin.
The preparation method of aforesaid a kind of flame-retardant wood-plastic, comprises the steps:
S1, batch mixing: 30-35 part PE, 30-65 part wood powder and 3-6 part lubricant are placed in to mixer and carry outStir, when stirring, gradation adds 10-20 part composite flame-retardant agent and is uniformly mixed wherein;
S2, granulation: the material that step S1 is mixed is sent into the main spout of dual-screw pelletizer and madeGrain carries out cooling by blast system conveyance conduit in course of conveying;
S3, extrude: the material after step S2 granulation is added and in double screw extruder, carries out extrusion molding,To flame-retardant wood-plastic.
Preferably, in step S1, mixing speed when mixing is 100-300r/min, and mixing temperature is normal temperature.
Preferably, in step S2, dual-screw pelletizer is total arranges Ba Ge district by feedstock direction order, eachThe temperature in district is controlled respectively and is: a district 180-190 DEG C, two district 180-200 DEG C, three district 190-210 DEG C, 4th district220-230 DEG C, five district 220-230 DEG C, six district 190-210 DEG C, seven district 180-200 DEG C, eight district 180-190 DEG C,The temperature range in four He Wu district of districts is identical and the highest.
Preferably, in step S3, double screw extruder is total arranges Si Ge district by feedstock direction order, eachThe temperature in district is controlled respectively and is: a district 195-210 DEG C, two district 200-220 DEG C, three district 180-195 DEG C, 4th district170-190℃。
Usefulness of the present invention is: the present invention is by selecting suitable component and constituent content, simultaneously excellentChange technical process, obtained a kind of flame-retardant wood-plastic material of superior performance. Adopt pentaerythritol phosphate andThe synthetic compound of melamine is as composite flame-retardant agent, and wherein, melamine is source of the gas, pentaerythrite phosphorusAcid esters is acid source and charcoal source, as coupling agent (without adding the coupling agent of maleic anhydride as grafting PE),With the hydroxyl generation ester exchange reaction in wood powder, by chemical bonds, thereby increase the power of plastic-wood materialLearn intensity, significantly reduce the quantity of water imbibition hydroxyl in wood powder simultaneously, make the plastic wood sheet of ultralow water absorption rate,There is again good flame retardant effect simultaneously.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is done to concrete introduction.
Embodiment 1
S1, batch mixing: 35 parts of PE, 39 parts of wood powders and 6 parts of lubricants are placed in to mixer and stir,When stirring, divide wherein and add 20 parts of composite flame-retardant agents for three times and be uniformly mixed, mixing speed is100r/min, gradation adds can further improve the uniformity of mixing, effectively reduces water imbibition hydroxyl in wood powderQuantity, thereby support the Wood plastic boards of ultralow water absorption rate;
S2, granulation: the material that step S1 is mixed is sent into the main spout of dual-screw pelletizer and madeGrain carries out cooling by blast system conveyance conduit in course of conveying; Dual-screw pelletizer is total by charging sideTo order, Ba Ge district is set, the temperature in each district is controlled respectively and is: a district 180-190 DEG C, two district 180-200 DEG C,Three district 190-210 DEG C, four district 220-230 DEG C, five district 220-230 DEG C, six district 190-210 DEG C, 7th district180-200 DEG C, eight district 180-190 DEG C, the temperature range in four He Wu districts of district is identical and the highest, can guarantee like thisTemperature in granulation stage casing is the highest, thus the bending strength the best obtaining;
S3, extrude: the material after step S2 granulation is added and in double screw extruder, carries out extrusion molding,To flame-retardant wood-plastic; Double screw extruder is total arranges Si Ge district by feedstock direction order, and the temperature in each district is dividedKong Zhi not be: a district 195-210 DEG C, two district 200-220 DEG C, three district 180-195 DEG C, four district 170-190 DEG C.
Embodiment 2
Embodiment 2 and embodiment 1 are roughly the same, and difference part is: the content of (1), raw material components is:10 parts of composite flame-retardant agents, PE30 part, 57 parts of wood powders, 3 parts of lubricants; (2), composite flame-retardant agent at twiceAdd in mixer.
Embodiment 3
Embodiment 3 and embodiment 1 are roughly the same, and difference part is raw material components content: composite flame-retardant agent15 parts, PE30 part, 50 parts of wood powders, 3 parts of lubricants.
Performance Detection
For the present invention is described better, the performance of the Wood-plastic material below each embodiment being obtained is tested,Adopt standard method of test in industry to product carry out bending strength, the modulus of elasticity in static bending, 24h water absorption rate,Oxygen index (OI) and flame retardant rating test, compare in conjunction with comparative example meanwhile, and comparative example is commercial employingThe Wood-plastic material of P-N flame retardant, test result is in table 1.
Table 1 embodiment 1-3 and the contrast of comparative example test result
As seen from Table 1, the product that various embodiments of the present invention are prepared, mechanical performance (bending strength and curvedModulus in elasticity in bending) be all better than comparative example, the mechanical strength of Wood-plastic material is significantly promoted; Due to pentaerythritePhosphate, as coupling agent, has not only played the effect of grafting PE, can also with wood powder in hydroxyl generation ester hand overChange reaction, significantly reduced the quantity of water imbibition hydroxyl in wood powder, mould so made the ultralow wood of water absorption rateMaterial; And, the favorable dispersibility of composite flame-retardant agent, simultaneously by optimizing the process for dispersing in preparation process,The fire resistance of product is very good, and environment-protecting asepsis.
More than show and described general principle of the present invention, principal character and advantage. The technology people of the industryMember should understand, and above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or equivalence changeThe technical scheme that the mode of changing obtains, all drops in protection scope of the present invention.

Claims (6)

1. a flame-retardant wood-plastic, is characterized in that, the parts by weight that comprise following component and each component are respectively:
Composite flame-retardant agent: 10-20 part;
PE:30-35 part;
Wood powder: 30-65 part;
Lubricant: 3-6 part;
Described composite flame-retardant agent is pentaerythritol phosphate and the synthetic compound of melamine; In described composite flame-retardant agent, the weight portion of pentaerythritol phosphate is 40-60 part, the weight portion of melamine is 40-60 part, by pentaerythritol phosphate and melamine at 60 DEG C, stir 3-6h, make both that chemical reaction occur, products therefrom obtains composite flame-retardant agent through 80 DEG C of vacuum drying 3-6h.
2. a kind of flame-retardant wood-plastic according to claim 1, is characterized in that, described lubricant is one or more of stearic acid, calcium stearate, zinc stearate, paraffin.
3. the preparation method of a kind of flame-retardant wood-plastic as claimed in claim 1, is characterized in that, comprises the steps:
S1, batch mixing: 30-35 part PE, 30-65 part wood powder and 3-6 part lubricant are placed in to mixer and stir, when stirring, gradation adds 10-20 part composite flame-retardant agent and is uniformly mixed wherein;
S2, granulation: the main spout that the material that step S1 is mixed is sent into dual-screw pelletizer carries out granulation, carries out cooling by blast system conveyance conduit in course of conveying;
S3, extrude: the material after step S2 granulation is added in double screw extruder and carries out extrusion molding, obtain flame-retardant wood-plastic.
4. preparation method according to claim 3, is characterized in that, in described step S1, mixing speed when mixing is 100-300r/min, and mixing temperature is normal temperature.
5. preparation method according to claim 3; it is characterized in that; in described step S2; dual-screw pelletizer is total arranges Ba Ge district by feedstock direction order; the temperature in each district is controlled respectively and is: a district 180-190 DEG C, two district 180-200 DEG C, three district 190-210 DEG C, four district 220-230 DEG C, five district 220-230 DEG C, six district 190-210 DEG C, seven district 180-200 DEG C, eight district 180-190 DEG C, the temperature range in four He Wu districts of district is identical and the highest.
6. preparation method according to claim 3, it is characterized in that, in described step S3, double screw extruder is total arranges Si Ge district by feedstock direction order, and the temperature in each district is controlled respectively and is: a district 195-210 DEG C, two district 200-220 DEG C, three district 180-195 DEG C, four district 170-190 DEG C.
CN201410308087.9A 2014-06-30 2014-06-30 A kind of flame-retardant wood-plastic and preparation method thereof Active CN104073011B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104945925A (en) * 2015-07-15 2015-09-30 江苏旭华圣洛迪建材有限公司 Anti-flaming wood plastic profile and preparation method thereof
CN108676375A (en) * 2018-06-08 2018-10-19 湖南映宏新材料股份有限公司 A kind of Recycled Wood-Plastic Composite and preparation method thereof
CN115011016A (en) * 2022-05-14 2022-09-06 贵州盛昌铝业有限公司 Fire-resistant plastic-wood composite board

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Publication number Priority date Publication date Assignee Title
CN1837278A (en) * 2006-04-28 2006-09-27 南京聚隆化学实业有限责任公司 Flame-resistant plastic-wood composite materials and process for preparing same
CN101967288A (en) * 2010-09-21 2011-02-09 深圳市科聚新材料有限公司 Wood flour filled polypropylene composite material and preparation method thereof
CN102337037A (en) * 2011-05-31 2012-02-01 深圳市科聚新材料有限公司 Polystyrene (PP) furniture plastic-wood material filled and modified by wood flour and preparation method for PP furniture plastic-wood material
CN102816385A (en) * 2012-08-29 2012-12-12 江苏旭华圣洛迪建材有限公司 Flame-retardant polypropylene wood-plastic composite and preparation process thereof
CN103113775A (en) * 2013-01-23 2013-05-22 四川卓安消防材料有限公司 Intumescent flame retardant including N-P cage type macromolecules and preparation technology thereof

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US20110071237A1 (en) * 2006-09-25 2011-03-24 Chemtura Corporation Flame Resistance Natural Fiber-Filled Thermoplastics with Improved Properties

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1837278A (en) * 2006-04-28 2006-09-27 南京聚隆化学实业有限责任公司 Flame-resistant plastic-wood composite materials and process for preparing same
CN101967288A (en) * 2010-09-21 2011-02-09 深圳市科聚新材料有限公司 Wood flour filled polypropylene composite material and preparation method thereof
CN102337037A (en) * 2011-05-31 2012-02-01 深圳市科聚新材料有限公司 Polystyrene (PP) furniture plastic-wood material filled and modified by wood flour and preparation method for PP furniture plastic-wood material
CN102816385A (en) * 2012-08-29 2012-12-12 江苏旭华圣洛迪建材有限公司 Flame-retardant polypropylene wood-plastic composite and preparation process thereof
CN103113775A (en) * 2013-01-23 2013-05-22 四川卓安消防材料有限公司 Intumescent flame retardant including N-P cage type macromolecules and preparation technology thereof

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Effective date of registration: 20160519

Address after: 528449 Guangdong province Zhongshan Nanlang Town Industrial Zone Hengmen Home Road No. 9

Patentee after: Zhongshan Saint Lodi New Material Co. Ltd.

Address before: 212415 Zhenjiang city in Jiangsu Province town of Jurong Meiya Baohua Road No. 17

Patentee before: Jiangsu Xuhua Shengluodi Building Material Co.,Ltd.

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PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Antiflaming wood plastic and preparation method thereof

Effective date of registration: 20170731

Granted publication date: 20160511

Pledgee: Industrial Commercial Bank of China Ltd Zhongshan branch

Pledgor: Zhongshan Saint Lodi New Material Co. Ltd.

Registration number: 2017990000697