CN110253811A - A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material - Google Patents

A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material Download PDF

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Publication number
CN110253811A
CN110253811A CN201910443302.9A CN201910443302A CN110253811A CN 110253811 A CN110253811 A CN 110253811A CN 201910443302 A CN201910443302 A CN 201910443302A CN 110253811 A CN110253811 A CN 110253811A
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CN
China
Prior art keywords
wood shavings
wood
eps
pure
retardant
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Pending
Application number
CN201910443302.9A
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Chinese (zh)
Inventor
李洪飞
王迪
张胜
谷晓昱
孙军
姜鹏
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
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Publication date
Application filed by Beijing University of Chemical Technology filed Critical Beijing University of Chemical Technology
Priority to CN201910443302.9A priority Critical patent/CN110253811A/en
Publication of CN110253811A publication Critical patent/CN110253811A/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
    • 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
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29B9/16—Auxiliary treatment of granules
    • B29B2009/163—Coating, i.e. applying a layer of liquid or solid material on the granule
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • B29K2025/04—Polymers of styrene
    • B29K2025/06—PS, i.e. polystyrene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
    • B29K2105/0026—Flame proofing or flame retarding agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0064—Latex, emulsion or dispersion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets

Landscapes

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

Abstract

The invention belongs to plastic processing technical field of modification, and in particular to a kind of preparation process of novel lightweight formaldehyde-free wood-plastic fire proofing.It is characterized in that being first put on sieve firstly, weighing expandable polystyrene EPS (40%), cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Pure-acrylic emulsion (10%) and wood shavings (40%), expansible graphite (1%-10%), ammonium polyphosphate (1%-10%) are put into low-speed agitator and is uniformly mixed, takes out.The expandable polystyrene bead of curing is put into low-speed agitator, pure-acrylic emulsion and wood shavings mixture are distinguished in secondary addition blender in three batches, lotion is first added, wood shavings and fire retardant is then added, so that wood shavings and fire retardant are equably sticked to EPS surface of beads.Last its is put into mold, is then placed in 130 DEG C of baking oven and is placed 55 minutes.The invention ensure that the mechanical property of light wood-plastic plate, while plate being made to have flame retardant effect, there is biggish meaning in practical applications.

Description

A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material
Technical field
The invention belongs to plastic processing technical field of modification, and in particular to a kind of novel fire-retardant material of lightweight formaldehyde-free wood-plastic The preparation process of material.
Background technique
The material that wood plastic composite is made of timber and thermoplastic or thermosetting material, with traditional wooden material Material and plastics compare, it is a kind of product that comparison is new.Wood plastic composite rapidly develops at present, it is widely answered For in daily life, such as: building, door and window, floor etc..
The matrix of general wood plastic composite is polypropylene, polyvinyl chloride, polylactic acid etc., the matrix that the present invention uses for Expandable polystyrene (EPS), can be cured by steam, be put into mold and foamed, can production department's density is low, quality is small Plate.
Due to the shortage of timber resources, demand of the people to timber increasingly increases, and Wood-plastic material of the present invention can recycle Discarded sawdust is as raw material, so Wood-plastic material development is very necessary.Wood plastic boards of the invention have excellent performance: first First, EPS can mitigate weight as matrix, produce low-density plate, be beneficial to energy conservation emission reduction；Secondly, particieboard source is wide It is general and can recycle；Finally, Wood plastic boards production cost of the invention is low.But timber and plastic substrate belong to easily Combustion things, the application of the plate of the present invention of this problem limitation, so studying its flame retardant property becomes key especially.
EPS base light flame-retardant Wood plastic boards are made of wood shavings, expandable polystyrene, pure-acrylic emulsion and fire retardant. The flame-retardant system belongs to inflatable flame-retardant system, is halogen-free and environment-protecting and non-poisonous, in combustion, fire retardant expansible graphite As expanding fire retardant, sour heat between graphite flake layer, which is decomposed, generates gas so that graphite linings expand, thus play every The effect of fire screen heat；Ammonium polyphosphate can be used as acid source catalysis carbon-forming, while can be crosslinked carbon-coating and expansion carbon-coating intensity is become larger, More effectively protection body.Flame-retardant wood-plastic plate not only has good flame retardant effect, but also does not contain halogens and density It is low, meet environmental requirement；The board cost is low, and performance is good, increasingly the attention by researcher and enterprise.
The present invention uses expandable polystyrene and wood shavings as matrix pure-acrylic emulsion as adhesive, so that inflatable poly- Styrene and wood shavings connect；Fire retardant is used as another filler, so that the raising of Wood plastic boards oxygen index (OI), less easy firing, In the process of burning, delay the fire spread time, escapes from the fire scene for people in fire and advantage is provided.
It is an object of the invention to produce a kind of novel lightweight formaldehyde-free wood-plastic plate, and fire-retardant place is done on this basis Reason so that its have the characteristics that it is nonflammable, finally make finished product be light flame-retardant Wood plastic boards.
The purpose of the present invention can be achieved through the following technical solutions:
The component and content of the flame-retardant wood-plastic plate:
Expandable polystyrene (40%), wood shavings (40%), lotion (10%-20%), compound flame retardant (5%-10%).
EPS of the present invention is partial size 1.2-1.8mm, the expandable polystyrene that one step foaming multiplying power is 70-85 times.
Wood shavings of the present invention are bamboo and wood, one of wooden shavings such as Aspen wood shavings or several mixtures.
Compound flame retardant of the present invention is the mixture of ammonium polyphosphate and expansible graphite.
Lotion of the present invention is pure-acrylic emulsion of the solid content in 50%-60%.
The invention the following steps are included:
(1) it matches and stocks up according to following components: expandable polystyrene (40%), wood shavings (40%), pure-acrylic emulsion (10%-20%), compound flame retardant (5%-10%).
(2) firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then sieve is put It above to boiling water pot, is cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Secondly, by pure C cream Liquid, wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing Expandable polystyrene bead, which is put into low-speed agitator, mixes slowly it, and the mixture of pure-acrylic emulsion and wood shavings is divided respectively Three batches are added in blender, and lotion are first added every time, wood shavings and flame-retardant mixture is then added, so that wood shavings and resistance Combustion agent is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, and It puts it into 100 DEG C -130 DEG C of baking oven and places 55 minutes to 60 minutes, take out mold, room temperature is cooling, sampling.
Advantages of the present invention:
Expandable polystyrene used in the present invention, after foaming, density is low, meets energy-saving and emission-reduction.
Wood shavings used in the present invention derive from residue, from a wealth of sources and protection forest resourceies.
Pure-acrylic emulsion used in the present invention, nontoxic, environmental protection.
Compound flame retardant used in the present invention can generate very thick carbon-coating, while carbon-coating is crosslinked in combustion process And non-flammable compressive gas is released, charring layer intensity is improved, has completely cut off the conduction of heat and has reduced rate of heat production, when extending resistance to combustion Between.
Specific embodiment
Example one:
Each component content:
Expandable polystyrene (40%), wood shavings (40%), pure-acrylic emulsion (10%), expansible graphite (5%), polyphosphoric acid Ammonium (5%).
Preparation method:
Firstly, firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then by sieve It is put into above boiling water pot, is cured -50 seconds 40 seconds in steam, be drawn off being placed in and be placed at room temperature for 10 hours.Secondly, by pure C Lotion, wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing Expandable polystyrene bead be put into low-speed agitator and mix slowly it, the mixture of pure-acrylic emulsion and wood shavings is distinguished In three batches in secondary addition blender, and lotion is first added every time, wood shavings and flame-retardant mixture is then added so that wood shavings and Fire retardant is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, And put it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60 minutes, mold is taken out, room temperature is cooling, and sampling is just prepared EPS base light flame-retardant plate is gone out.
Example two:
Each component content:
Expandable polystyrene (40%), wood shavings (40%), pure-acrylic emulsion (10%), expansible graphite (9%), polyphosphoric acid Ammonium (1%).
Preparation method:
Firstly, firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then by sieve It is put into above boiling water pot, is cured -50 seconds 40 seconds in steam, be drawn off being placed in and be placed at room temperature for 10 hours.Secondly, by pure C Lotion, wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing Expandable polystyrene bead be put into low-speed agitator and mix slowly it, the mixture of pure-acrylic emulsion and wood shavings is distinguished In three batches in secondary addition blender, and lotion is first added every time, wood shavings and flame-retardant mixture is then added so that wood shavings and Fire retardant is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, And put it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60 minutes, mold is taken out, room temperature is cooling, and sampling is just prepared EPS base light flame-retardant plate is gone out.
Example three:
Each component content:
Expandable polystyrene (40%), wood shavings (40%), pure-acrylic emulsion (15%), expansible graphite (3%), polyphosphoric acid Ammonium (2%).
Preparation method:
Firstly, firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then by sieve It is put into above boiling water pot, is cured -50 seconds 40 seconds in steam, be drawn off being placed in and be placed at room temperature for 10 hours.Secondly, by pure C Lotion, wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing Expandable polystyrene bead be put into low-speed agitator and mix slowly it, the mixture of pure-acrylic emulsion and wood shavings is distinguished In three batches in secondary addition blender, and lotion is first added every time, wood shavings and flame-retardant mixture is then added so that wood shavings and Fire retardant is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, And put it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60 minutes, mold is taken out, room temperature is cooling, and sampling is just prepared EPS base light flame-retardant plate is gone out.
Example four:
Each component content:
Expandable polystyrene (40%), wood shavings (40%), pure-acrylic emulsion (15%), expansible graphite (3%), polyphosphoric acid Ammonium (2%).
Preparation method:
Firstly, firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then by sieve It is put into above boiling water pot, is cured -50 seconds 40 seconds in steam, be drawn off being placed in and be placed at room temperature for 10 hours.Secondly, by pure C Lotion, wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing Expandable polystyrene bead be put into low-speed agitator and mix slowly it, the mixture of pure-acrylic emulsion and wood shavings is distinguished In three batches in secondary addition blender, and lotion is first added every time, wood shavings and flame-retardant mixture is then added so that wood shavings and Fire retardant is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, And put it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60 minutes, mold is taken out, room temperature is cooling, and sampling is just prepared EPS base light flame-retardant plate is gone out.
Example five:
Each component content:
Expandable polystyrene (40%), wood shavings (40%), pure-acrylic emulsion (12%), expansible graphite (4%), polyphosphoric acid Ammonium (4%).
Preparation method:
Firstly, firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, then by sieve It is put into above boiling water pot, is cured -50 seconds 40 seconds in steam, be drawn off being placed in and be placed at room temperature for 10 hours.Secondly, by pure C Lotion, wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing Expandable polystyrene bead be put into low-speed agitator and mix slowly it, the mixture of pure-acrylic emulsion and wood shavings is distinguished In three batches in secondary addition blender, and lotion is first added every time, wood shavings and flame-retardant mixture is then added so that wood shavings and Fire retardant is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, And put it into 100 DEG C -130 DEG C of baking oven and place 55 minutes to 60 minutes, mold is taken out, room temperature is cooling, and sampling is just prepared EPS base light flame-retardant plate is gone out.

Claims (5)

1. a kind of preparation method of lightweight formaldehyde-free wood-plastic flame-proof sheet material, it is characterised in that:
This method comprises:
(1) it stocks up according to following quality than component proportion:
Expandable polystyrene 40%, wood shavings 40%, lotion 10%-20%, compound flame retardant 5%-10%；
(2) firstly, the expandable polystyrene EPS beads for weighing certain mass are put on sieve, sieve is then put into boiling It above kettle, is cured -50 seconds 40 seconds in steam, is drawn off being placed in and is placed at room temperature for 10 hours.Secondly, by pure-acrylic emulsion, Wood shavings, ammonium polyphosphate, expansible graphite are put into low-speed agitator and are uniformly mixed, and then take out mixture.Curing can Expanded polystyrene bead, which is put into low-speed agitator, mixes slowly it, divides three respectively for the mixture of pure-acrylic emulsion and wood shavings Batch is added in blender, and lotion is first added every time, wood shavings and flame-retardant mixture is then added, so that wood shavings and fire-retardant Agent is equably sticked to EPS surface of beads.Finally the obtained EPS bead for being stained with wood shavings and fire retardant is put into mold, and will It is placed 55 minutes to 60 minutes in its baking oven for being put into 100 DEG C -130 DEG C, takes out mold, room temperature is cooling, sampling.
2. method according to claim 1, which is characterized in that the wood shavings be the one kind of wood shavings such as bamboo and woods fiber, poplar or Mixture.
3. method according to claim 1, which is characterized in that the lotion is pure-acrylic emulsion of the solid content in 50%-60%.
4. method according to claim 1, which is characterized in that the compound flame retardant includes ammonium polyphosphate and inflatable stone Ink.
5. method according to claim 1, which is characterized in that the EPS is partial size 1.2-1.8mm, and one step foaming multiplying power is 70-85 times of expandable polystyrene.
CN201910443302.9A 2019-05-25 2019-05-25 A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material Pending CN110253811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910443302.9A CN110253811A (en) 2019-05-25 2019-05-25 A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910443302.9A CN110253811A (en) 2019-05-25 2019-05-25 A kind of preparation process of lightweight formaldehyde-free wood-plastic flame-proof sheet material

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CN110253811A true CN110253811A (en) 2019-09-20

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110065590A (en) * 2009-12-10 2011-06-16 (주)엘지하우시스 Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same
CN102504557A (en) * 2011-10-08 2012-06-20 福建农林大学 Low-density wood-plastic composite shaving board and manufacture method thereof
CN102660084A (en) * 2012-04-12 2012-09-12 北京华辰德创化工技术有限公司 Composite flame-retardant expandable polystyrene particles and preparation technology thereof
CN102808461A (en) * 2012-08-20 2012-12-05 重庆龙者低碳环保科技有限公司 EPS (expandable polystyrene) fireproof thermal-insulating plate
CN105235047A (en) * 2013-08-28 2016-01-13 钱秀英 Production method for producing damp-proof ceiling decoration density board through saw dust
EP3170636A2 (en) * 2015-11-12 2017-05-24 Flooring Technologies Ltd. Composite wood panel made from a wood-plastic composite material and isocyanate, and a method for their preparation
CN108948767A (en) * 2018-07-19 2018-12-07 北京化工大学 A kind of preparation process of expansion type flame-retarding particieboard

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110065590A (en) * 2009-12-10 2011-06-16 (주)엘지하우시스 Wood plastic composite having excellent flame retardant and low manufacturing cost, and method of making the same
CN102504557A (en) * 2011-10-08 2012-06-20 福建农林大学 Low-density wood-plastic composite shaving board and manufacture method thereof
CN102660084A (en) * 2012-04-12 2012-09-12 北京华辰德创化工技术有限公司 Composite flame-retardant expandable polystyrene particles and preparation technology thereof
CN102808461A (en) * 2012-08-20 2012-12-05 重庆龙者低碳环保科技有限公司 EPS (expandable polystyrene) fireproof thermal-insulating plate
CN105235047A (en) * 2013-08-28 2016-01-13 钱秀英 Production method for producing damp-proof ceiling decoration density board through saw dust
EP3170636A2 (en) * 2015-11-12 2017-05-24 Flooring Technologies Ltd. Composite wood panel made from a wood-plastic composite material and isocyanate, and a method for their preparation
CN108948767A (en) * 2018-07-19 2018-12-07 北京化工大学 A kind of preparation process of expansion type flame-retarding particieboard

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