CN107513229A - A kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof - Google Patents
A kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof Download PDFInfo
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- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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Abstract
The present invention provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, is related to field of material technology.A kind of environmentally friendly polrvinyl benzene composite board material, is mainly made up of following raw material that counting in parts by weight：50~100 parts of polystyrene, 50~100 parts of biodegradation material, 10~25 parts of sensitising agent, 5~15 parts of foaming agent, 20~50 parts of additive.Additive includes one or both of inorganic additive, organic additive.Organic additive includes one or both of ethylene methacrylic acid copolymer, ethylene acrylic acid co polymer.Inorganic additive includes TiO2, silicon-base oxide, A12O3In one or more.In the presence of sensitising agent, it can make polystyrene that light-ecological film occur.PLA can not only improve the mechanical property and hygroscopicity of polystyrene, moreover it is possible to by the degraded of PLA, can further destroy the macromolecular structure of polystyrene, aid in the light-ecological film of polystyrene.
Description
Technical field
The present invention relates to field of material technology, in particular to a kind of environmentally friendly polrvinyl benzene composite board material and its preparation
Method.
Background technology
Polystyrene (PS) is a kind of functional, cheap general-purpose plastics.Polystyrene foam has light, nothing
The advantages that malicious, heat-insulated, damping, it is widely used in all kinds of packagings, insulation, waterproof, packing, instrument and home electric appliance material, body
Product is big, and serious white pollution can be caused by accumulating over a long period.Largely discarded packaging material not only pollutes environment, also result in original
The waste of material.Therefore, the recycling research to waste polystyrene foam plastic is that people pay close attention to and constantly always in recent years
The important topic inquired into.The method for the treatment of of waste plastics substantially has 3 kinds at present：Burning disposal, soil is buried and recycles.
During burning disposal, a large amount of black smokes and toxic gas can be produced；Soil is buried to take limited land resource；Recycling includes
Dissolution method, melting regeneration make its cracking etc..But recovery tends not to the utilization for thoroughly solving waste, in removal process
Meeting discharge part toxic gas, produces secondary pollution, and energy consumption is also big.In recent years, the method for conventional degraded polystyrene is heat
Degraded.But heat drop solution needs very high degradation temperature, and the viscosity of molten polystyrene is very high and heat transfer rate is very low,
Coking charing can occur in degradation process, and then block pipeline.
The content of the invention
It is an object of the invention to provide a kind of environmentally friendly polrvinyl benzene composite board material, the more traditional polystyrene plates of the sheet material
Environmental pollution is smaller, and degradation rate is fast.
Another object of the present invention is to provide a kind of preparation method of environmentally friendly polrvinyl benzene composite board material, this method is simple
Efficiently, and the sheet material excellent combination property prepared.
The present invention is solved its technical problem and realized using following technical scheme.
The present invention proposes a kind of environmentally friendly polrvinyl benzene composite board material, is mainly made up of following raw material that counting in parts by weight：
50~100 parts of polystyrene, 50~100 parts of biodegradation material, 10~25 parts of sensitising agent, 5~15 parts of foaming agent, additive 20
~50 parts.
Additive includes one or both of inorganic additive, organic additive.Organic additive includes ethene-methyl
One or both of acrylic copolymer, ethylene-acrylic acid copolymer.Inorganic additive includes TiO2, silicon-base oxide,
A12O3In one or more.
The present invention proposes a kind of preparation method of environmentally friendly polrvinyl benzene composite board material.Including：By polystyrene, biodegradation
First mixture of material is placed in mould with foaming agent, additive and sensitising agent, and is entered at a temperature of 100~120 DEG C
Row shaping.
The beneficial effect of environmentally friendly polrvinyl benzene composite board material provided in an embodiment of the present invention and preparation method thereof is：
The embodiment of the present invention provides a kind of environmentally friendly polrvinyl benzene composite board material, and it is mainly by polystyrene, biodegradable material
Material, sensitising agent, foaming agent, additive are made up of primary raw material.It is ultraviolet through sunlight in natural environment in the presence of sensitising agent
The irradiation of line accelerates the aging and degraded of polystyrene, makes polystyrene that optically and biologically degrading occur.By adding into polystyrene
Addition polymerization lactic acid, it on the one hand can improve the mechanical property and hygroscopicity of polystyrene, on the other hand pass through the degraded of PLA, energy
Enough macromolecular structures for further destroying polystyrene, aid in the optically and biologically degrading of polystyrene.Therefore, sensitising agent and poly- breast
Acid can cooperate with the biodegradation for accelerating polystyrene.Foaming agent can be internally formed closed pore in polystyrene, be gas in hole,
The density of composite board is not only reduced, also improves the insulating power of composite board.Meanwhile carry out biological drop in composite board
Xie Shi, stomata are advantageous to provide multiple passages for microorganism, accelerate the degraded of polystyrene.Additive can effectively be strengthened compound
The adhesive ability of sheet material, so further prevent because caused by the loosening of composite board seep water, corrode situations such as.Composite plate
The raising of material adhesive force, the service life of composite board can be extended, reduce the discarded rate of composite board.
The embodiment of the present invention also provides a kind of preparation method of environmentally friendly polrvinyl benzene composite board material, including：By polystyrene,
First mixture of biodegradation material is placed in mould with foaming agent, additive and sensitising agent, and at 100~120 DEG C
At a temperature of be molded.Method is simple, and gained composite board foaming degree, combination property are preferable.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, it is the conventional production that can be obtained by commercially available purchase
Product.
The environmentally friendly polrvinyl benzene composite board material and preparation method of the embodiment of the present invention are specifically described below.
A kind of environmentally friendly polrvinyl benzene composite board material, is mainly made up of following raw material that counting in parts by weight：
50~100 parts of polystyrene, 50~100 parts of biodegradation material, 10~25 parts of sensitising agent, 5~15 parts of foaming agent,
20~50 parts of additive.
Additive includes one or both of inorganic additive, organic additive, and organic additive includes ethene-methyl
One or both of acrylic copolymer, ethylene-acrylic acid copolymer；Inorganic additive includes TiO2, silicon-base oxide,
A12O3In one or more.
Further, raw material includes the following component counted in parts by weight：70~90 parts of polystyrene, biodegradation material 60
~80 parts, 15~20 parts of sensitising agent, 8~12 parts of foaming agent, 30~40 parts of additive.
The gas-premeable of ethylene-methacrylic acid copolymer (EMAA) or ethylene-acrylic acid copolymer (EAA), resistance to ring
Border stress cracking resistance increases and improved with methacrylic acid content, its transparency, toughness, lower temperature resistance, cementability, coloring
Good, corrosion resistance, anti-aging are excellent.A large amount of carboxyls on EMAA or EAA molecular backbones be present, molecular polarity is strong, makes an addition to poly-
The adhesive property of polystyrene can be improved in styrene.For example, when the composite board and alloy, steel, building of the present embodiment
When thing is bonded, additive can effectively strengthen the adhesive ability of composite board, and then further prevent because of composite board
Situations such as seeping water, corroding caused by loosening.The raising of composite board adhesive force, can extend composite board uses the longevity
Life, reduce the discarded rate of composite board.
Nano silicon-based oxide (SiO2-X) it is unformed white powder, undersaturated residual bond and different bondings be present in surface
The hydroxyl of state, therefore molecular formula is SiO2-X, wherein X is between 0.4~0.8.Nano-meter SiO_22-xPlastics system can be increased substantially
Intensity, toughness, wearability and the ageing resistace of product.Nano-TiO2With high uv-shielding capacity, plastics can be delayed significantly
Aging speed.Nanometer A12O3The abrasion resistance properties of energy reinforced plastics.Inorganic nano-particle exclusive use is less, is generally used as
Additive improves the mechanical property of matrix.Inorganic additive TiO2、SiO2-x、A12O3Superpower adsorption ability can be utilized,
And the intermolecular force between macromolecule, increase adhesive force of the polystyrene on other materials surface.
Polystyrene (English：Polystyrene, abbreviation PS) it is a kind of thermoplastic of water white transparency, it is by benzene second
The polymer that alkene monomer synthesizes through free radical polycondensation reaction.Because it has the glass transition temperature higher than 100 degrees Celsius, so through
Often it is used to manufacture the various disposable containers for needing to bear water temperature or disposable foam food boxes etc..Its world wide production at present
The 4th of general-purpose plastics is accounted for, substantial amounts of poly styrene wastes is thus produced, has triggered increasingly severe environmental pollution to ask
Topic.Polystyrene is difficult biodegradation, but can issue raw optically and biologically degrading in the irradiation of light.Its mechanism of degradation is：In sensitising agent
In the presence of, the irradiation through UV sunlight accelerates its aging in natural environment and degrading (makes polystyrene macromolecular chain break
Split, molecular weight and molecular weight), its relic is further degraded under natural environment by the effect of biodegradation agent, disappear to and soil
Assimilation.
Sensitising agent can further include acetylacetone metallic compound, aminodithioformic acid metallic compound, two cyclopentadienyls
One or more in iron, stearate (stearic acid is octadecanoid acid).Sensitising agent only absorbs photon and transferred energy to
Polystyrene, rush brings it about chemical reaction, and sensitising agent is then not involved in chemically reacting in itself, returns to original state.
Biodegradation material refers to histocyte in nature microorganism or in human body and animal body, enzyme and body fluid
Under effect, its chemical constitution is set to change, the high polymer material for causing molecular weight and molecular weight and performance to change.It is biodegradable
Material is broadly divided into natural macromolecular material, Microbe synthesis high polymer material, chemical synthesis macromolecule according to the difference in source
Material and mix type high polymer material.The biodegradation material provided in the embodiment of the present invention mainly includes natural polymer material
One or more in material, Microbe synthesis high polymer material, chemical synthesis high polymer material.
Wherein, chemical synthesis high polymer material can include one in PLA, polycaprolactone, polybutylene glycol succinate
Kind is a variety of.
PLA (PLA) is a kind of new biodegradation material, is carried using reproducible plant resources (such as corn)
The starch material gone out is made.Lactic acid is made via fermentation process in starch material, then is converted into PLA by chemical synthesis.It has
There is good biodegradability, can be degradable by microorganism in nature after use, carbon dioxide and water are ultimately generated, no
Environment is polluted, this is highly beneficial to environmental protection, is generally acknowledged environment-friendly material.The mechanism of degradation of biodegradable plastic, i.e.,
Biodegradable plastic causes the form of degraded substantially to have three kinds by microbial actions such as bacteriums：Biophysical effect, due to micro-
The growth of its cell after bioerosion and make polymer occur mechanical destruction；Biological chemistry action, microorganism is to polymer
Act on and produce new material；The direct effect of enzyme, microbial attack part cause plastics division or oxidation to be burst apart.
PLA (PLA) has most good tensile strength and extensibility, and PLA can also various common process modes
Production, such as：Melt extrusion molding, ejection formation, blowfilm shaping, foaming and vacuum forming.PLA (PLA) film has
There are good gas permeability, oxygen permeability and the carbon of saturating dioxy two, it also has the characteristic of isolation smell.Virus and mould are easily attached to
The surface of biodegradable plastic, therefore have the doubt of safety and health, however, PLA is that uniquely have excellent antibacterial and anti-mildew
The biodegradable plastic of characteristic.
, therefore, at present can not be completely by biology because this kind of environmental protection type biodegradable material price of PLA is of a relatively high
Degradable material replaces this kind of general-purpose plastics of polystyrene completely.By adding PLA into polystyrene, on the one hand can
Improve the mechanical property and hygroscopicity of polystyrene, on the other hand by the degraded of PLA, can further destroy polyphenyl second
The macromolecular structure of alkene, aid in the optically and biologically degrading of polystyrene.Therefore, sensitising agent can cooperate with acceleration polyphenyl with PLA
The biodegradation of ethene.
In the embodiment of the present invention, foaming agent selects physical blowing agent.Physical blowing agent includes expended microsphere, hollow glass
One or both of microballon.
Certain foaming agent can also select CBA.CBA includes azodicarbonamide, 4, and 4 '-oxo is double
One or both of benzene sulfonyl hydrazide.
The gases such as carbon dioxide and nitrogen can be discharged after the heated decomposition of CBA, and are formed in the polymer thin
Hole；Physical blowing agent is by the change of the physical aspect of a certain material, that is, passes through the expansion of compressed gas, the volatilization of liquid
Or solid dissolving and form pore in the polymer.Foaming agent can be internally formed closed pore in matrix material, be gas in hole.
It is well known that the thermal conductivity factor of gas is very small, the density of composite board is so not only reduced, also improves composite board
Insulating power.Meanwhile when composite board carries out biodegradable, stomata is advantageous to provide multiple passages for microorganism, accelerates poly-
The degraded of styrene.
The raw material of the environmentally friendly polrvinyl benzene composite board material can also further select the miscellaneous -10- phosphas of 9,10- dihydro-9-oxies
5~15 parts of phenanthrene -10- oxides, 5~10 parts of melamine.Both, can not only respectively as phosphorus flame retardant and nitrogenated flame retardant
The fire resistance of composite board is enough improved, and it is fire-retardant to play phosphorus, the synergistic of nitrogen, makes the flame retardant effect of composite board more preferable.
The fire retardant mechanism of fire retardant have it is a variety of, such as：Heat-absorbing action, covering effect, suppression chain reaction, non-flammable compressive gas make burning
Asphyxia etc..Miscellaneous -10- phospho hetero phenanthrenes -10- the oxides (DOPO) of phosphorus flame retardant 9,10- dihydro-9-oxies can capture freedom when heated
Base can produce the more stable crosslinking shape solid matter or carburization zone of structure with terminating reaction in burning surface.Carburization zone
On the one hand being formed can prevent polymer from being further pyrolyzed, its internal thermal decomposition generation on the other hand can be prevented to join into gas phase
With combustion process.
The embodiment of the present invention also provides a kind of preparation method of environmentally friendly polrvinyl benzene composite board material, mainly including following step
Suddenly：
Polystyrene, biodegradation material are subjected to melt blending at 120~150 DEG C, the first mixture is made.Melting
What blending can mix both materials is more uniformly distributed, and is advantageous to improve the biodegradation rate of polystyrene.
First mixture is carried out with foaming agent, additive and sensitising agent to mix to obtain the second mixture.Second mixture
First divulged information under conditions of 30~50 DEG C after curing 2~5 hours, then the second mixture is placed in mould, and 100~120
It is molded at a temperature of DEG C.Finally cooling obtains environmentally friendly polrvinyl benzene composite board material.Divulging information curing can be to the second mixture
The advance foaming of small size is carried out, to improve foaming integrality, uniformity and the frothing percentage of subsequent heat process.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Weigh polystyrene 50g, PLA 50g, acetylacetone,2,4-pentanedione sodium 10g, expended microsphere 5g, ethylene-methyl methacrylate
Copolymer 20g.
Polystyrene, PLA, expended microsphere, ethylene-methacrylic acid copolymer and acetylacetone,2,4-pentanedione sodium are carried out
Mixing.Mixture is placed in mould, and is molded at a temperature of 110 DEG C.Finally cooling obtains environmentally friendly polystyrene and answered
Plywood material.
Embodiment 2
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Weigh polystyrene 100g, PLA 40g, polycaprolactone 60g, ferrocene 10g, odium stearate 15g, hollow glass
Microballon 15g, ethylene-acrylic acid copolymer 25g, TiO2 25g。
Polystyrene, PLA, polycaprolactone are subjected to melt blending at 150 DEG C, the first mixture is made.By first
Mixture and hollow glass micropearl, ethylene-acrylic acid copolymer, TiO2, ferrocene and odium stearate mix second
Mixture.Second mixture is placed in mould, and is molded at a temperature of 120 DEG C.Finally cooling obtains environmentally friendly polyphenyl
Ethene composite board.
Embodiment 3
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Polystyrene 80g, PLA 30g, polycaprolactone 30g, polybutylene glycol succinate 20g, ferrocene 5g are weighed, firmly
Resin acid sodium 5g, nabam 10g, expended microsphere 6g, hollow glass micropearl 4g, silicon-base oxide 30g.
Polystyrene, PLA, polycaprolactone, polybutylene glycol succinate are subjected to melt blending at 120 DEG C, are made
First mixture.By the first mixture and expended microsphere, hollow glass micropearl, silicon-base oxide, ferrocene, odium stearate with
And nabam carries out mixing to obtain the second mixture.First ventilation curing 2 is small under conditions of 30 DEG C for second mixture
Shi Hou, then the second mixture is placed in mould, and be molded at a temperature of 100 DEG C.Finally cooling obtains environmentally friendly polyphenyl
Ethene composite board.
Embodiment 4
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Polystyrene 90g, polycaprolactone 25g, polybutylene glycol succinate 35g, ferrocene 2g, odium stearate 3g are weighed,
Nabam 4g, acetylacetone,2,4-pentanedione potassium 6g, azodicarbonamide 8g, silicon-base oxide 15g, A12O3 15g。
Polystyrene, polycaprolactone, polybutylene glycol succinate are subjected to melt blending at 140 DEG C, it is mixed to be made first
Compound.By the first mixture and azodicarbonamide, silicon-base oxide, A12O3, ferrocene, odium stearate and dithiocarbamates
Sodium formate, acetylacetone,2,4-pentanedione potassium carry out mixing to obtain the second mixture.First ventilation cures 5 hours second mixture under conditions of 50 DEG C
Afterwards, then by the second mixture it is placed in mould, and is molded at a temperature of 110 DEG C.Finally cooling obtains environmentally friendly polyphenyl second
Alkene composite board.
Embodiment 5
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Weigh polystyrene 70g, polycaprolactone 50g, odium stearate 6g, aminodithioformic acid calcium 10g, acetylacetone,2,4-pentanedione potassium
4g, 4,4 '-OBSH 12g, silicon-base oxide 15g, A12O315g, TiO2 10g。
Polystyrene, polycaprolactone are subjected to melt blending at 130 DEG C, the first mixture is made.By the first mixture
With 4,4 '-OBSH, silicon-base oxide, A12O3、TiO2, odium stearate, acetylacetone,2,4-pentanedione potassium and dithiocarbamates
Calcium formate carries out mixing to obtain the second mixture.Second mixture is first under conditions of 40 DEG C after ventilation curing 3 hours, then by second
Mixture is placed in mould, and is molded at a temperature of 105 DEG C.Finally cooling obtains environmentally friendly polrvinyl benzene composite board material.
Embodiment 6
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Weigh polystyrene 85g, polycaprolactone 70g, aminodithioformic acid calcium 10g, ferrocene 8g, hollow glass micropearl
8g, ethylene-methacrylic acid copolymer 10g, ethylene-acrylic acid copolymer 10g, A12O310g, TiO210g, 9,10- dihydros-
9- oxa- -10- phospho hetero phenanthrene -10- oxides 5g.
Polystyrene, polycaprolactone are subjected to melt blending at 130 DEG C, the first mixture is made.By the first mixture
With hollow glass micropearl, ethylene-methacrylic acid copolymer, ethylene-acrylic acid copolymer, A12O3、TiO2, dithiocarbamates first
Sour calcium, ferrocene and the miscellaneous -10- phospho hetero phenanthrenes -10- oxides of 9,10- dihydro-9-oxies carry out mixing to obtain the second mixture.Second
Mixture is placed in mould first under conditions of 40 DEG C after ventilation curing 3 hours, then by the second mixture, and in 105 DEG C of temperature
It is molded under degree.Finally cooling obtains environmentally friendly polrvinyl benzene composite board material.
Embodiment 7
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Weigh polystyrene 85g, polycaprolactone 70g, odium stearate 6g, aminodithioformic acid calcium 10g, acetylacetone,2,4-pentanedione potassium
4g, hollow glass micropearl 12g, ethylene-methacrylic acid copolymer 10g, ethylene-acrylic acid copolymer 10g, silicon-base oxide
8g, TiO210g, melamine 10g.
Polystyrene, polycaprolactone are subjected to melt blending at 135 DEG C, the first mixture is made.By the first mixture
With hollow glass micropearl, ethylene-methacrylic acid copolymer, ethylene-acrylic acid copolymer, silicon-base oxide, TiO2, stearic acid
Sodium, aminodithioformic acid calcium and melamine carry out mixing to obtain the second mixture.Second mixture is first in 35 DEG C of condition
After lower ventilation curing 4 hours, then the second mixture is placed in mould, and is molded at a temperature of 115 DEG C.Finally cool down
Obtain environmentally friendly polrvinyl benzene composite board material.
Embodiment 8
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Weigh polystyrene 85g, polycaprolactone 70g, odium stearate 6g, aminodithioformic acid calcium 10g, acetylacetone,2,4-pentanedione potassium
4g, hollow glass micropearl 8g, ethylene-methacrylic acid copolymer 10g, ethylene-acrylic acid copolymer 10g, silicon-base oxide 5g,
A12O310g, TiO210g, melamine 5g, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide 15g.
Polystyrene, polycaprolactone are subjected to melt blending at 145 DEG C, the first mixture is made.By the first mixture
With hollow glass micropearl, ethylene-methacrylic acid copolymer, ethylene-acrylic acid copolymer, silicon-base oxide, A12O3、TiO2、
Odium stearate, aminodithioformic acid calcium, melamine and the miscellaneous -10- phospho hetero phenanthrenes -10- oxides of 9,10- dihydro-9-oxies enter
Row mixes to obtain the second mixture.Second mixture is first under conditions of 45 DEG C after ventilation curing 2.5 hours, then by the second mixture
It is placed in mould, and is molded at a temperature of 108 DEG C.Finally cooling obtains environmentally friendly polrvinyl benzene composite board material.
Embodiment 9
The present embodiment provides a kind of environmentally friendly polrvinyl benzene composite board material and preparation method thereof, specific as follows：
Polystyrene 98g, polycaprolactone 20g, PLA 20g, polybutylene glycol succinate 20g, potassium stearate 3g are weighed,
Aminodithioformic acid calcium 6g, acetylacetone,2,4-pentanedione sodium 5g, ferrocene 4g, hollow glass micropearl 6g, expended microsphere 6g, ethene-first
Base acrylic copolymer 7g, silicon-base oxide 5g, A12O38g, TiO218g, melamine 8g, 9,10- dihydro-9-oxies are miscellaneous-
10- phospho hetero phenanthrene -10- oxides 10g.
Polystyrene, polycaprolactone, PLA, polybutylene glycol succinate are subjected to melt blending at 139 DEG C, are made
First mixture.
First mixture and expended microsphere, hollow glass micropearl, ethylene-methacrylic acid copolymer, silicon substrate are aoxidized
Thing, A12O3、TiO2, odium stearate, aminodithioformic acid calcium, acetylacetone,2,4-pentanedione sodium, ferrocene, melamine and 9,10- bis-
Hydrogen -9- oxa- -10- phospho hetero phenanthrene -10- oxides carry out mixing to obtain the second mixture.Second mixture is first under conditions of 38 DEG C
Divulge information after curing 3.5 hours, then the second mixture is placed in mould, and be molded at a temperature of 117 DEG C.Finally cool down
Obtain environmentally friendly polrvinyl benzene composite board material.
Comparative example
This comparative example provides a kind of polystyrene plates purchased in market.
Test example
The XPS purchased in market that the environmentally friendly polrvinyl benzene composite board material and comparative example that embodiment 1~9 is provided provide
Material is cut to shape, size identical product, and number consecutively 1~10 respectively.Every kind of product prepares 4, prepares 4 groups of experiments altogether
Sample, every group of laboratory sample contain 1~10 product.In same natural environment, 3 groups of laboratory samples are embedded in same depth
Soil in, another group of laboratory sample is used for the initial molecule amount of test experiments sample.Respectively after 1 month, 2 months, 3 months
First group, second group, the 3rd group of laboratory sample are taken out respectively.Use the change of molecular weight of gel chromatography (GPC) analysis product.Its
In, Mw represents weight average molecular mass, and Mn represents the equal molecular mass of number.Table 1 show molecular weight product rate of descent, molecular weight and molecular weight
Rate=product initial molecule amount/soil buries rear molecular weight product.
The molecular weight and molecular weight rate of the product of table 1
No. 10 laboratory samples are polystyrene plates purchased in market, and 1~No. 9 laboratory sample is carried by the embodiment of the present invention 1~9 respectively
For.From data in table 1, environmentally friendly polrvinyl benzene composite board material provided in an embodiment of the present invention has obvious biodegradable
Ability, the molecular weight and molecular weight rate of 1~No. 9 laboratory sample are far above No. 10 laboratory samples.Show, ring provided in an embodiment of the present invention
Polrvinyl benzene composite board material is protected more to meet at present to green requirement.
Embodiments described above is part of the embodiment of the present invention, rather than whole embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of environmentally friendly polrvinyl benzene composite board material, it is characterised in that be mainly made up of following raw material that counting in parts by weight：
50~100 parts of polystyrene, 50~100 parts of biodegradation material, 10~25 parts of sensitising agent, 5~15 parts of foaming agent, addition
20~50 parts of agent；
The additive includes inorganic additive, one or both of organic additive, the organic additive include ethene-
One or both of methacrylic acid copolymer, ethylene-acrylic acid copolymer；The inorganic additive includes TiO2, silicon substrate
Oxide, A12O3In one or more.
2. environmentally friendly polrvinyl benzene composite board material according to claim 1, it is characterised in that the raw material is included by weight
The following component of number meter：
70~90 parts of polystyrene, 60~80 parts of biodegradation material, 15~20 parts of sensitising agent, 8~12 parts of foaming agent, additive
30~40 parts.
3. environmentally friendly polrvinyl benzene composite board material according to claim 1, it is characterised in that the biodegradation material includes
One or more in natural macromolecular material, Microbe synthesis high polymer material, chemical synthesis high polymer material.
4. environmentally friendly polrvinyl benzene composite board material according to claim 3, it is characterised in that the chemical synthesis macromolecule material
Material includes the one or more in PLA, polycaprolactone, polybutylene glycol succinate.
5. environmentally friendly polrvinyl benzene composite board material according to claim 1, it is characterised in that the sensitising agent includes levulinic
One or more in ketone metallic compound, aminodithioformic acid metallic compound, ferrocene, stearate.
6. environmentally friendly polrvinyl benzene composite board material according to claim 1, it is characterised in that the foaming agent is sent out including physics
Infusion, the physical blowing agent include one or both of expended microsphere, hollow glass micropearl.
7. the environmentally friendly polrvinyl benzene composite board material according to any one of claim 1~6, it is characterised in that the raw material is also
Including 5~15 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 5~10 parts of melamine.
8. a kind of preparation method of environmentally friendly polrvinyl benzene composite board material as described in any one of claim 1~7, its feature exist
In, including：By the polystyrene, the first mixture and the foaming agent of the biodegradation material, the additive with
And the sensitising agent is placed in mould, and it is molded at a temperature of 100~120 DEG C.
9. the preparation method of environmentally friendly polrvinyl benzene composite board material according to claim 8, it is characterised in that described first is mixed
The preparation method of compound includes：The polystyrene, the biodegradation material are subjected to melt blending at 120~150 DEG C.
10. the preparation method of environmentally friendly polrvinyl benzene composite board material according to claim 8, it is characterised in that by described
One mixture carries out mixing to obtain the second mixture, the second mixture with the foaming agent, the additive and the sensitising agent
First ventilation curing 2~5 hours under conditions of 30~50 DEG C, then the second mixture are placed in the mould, and 100~
It is molded at a temperature of 120 DEG C.
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