CN107674342A - A kind of Modified wood plastic composite plate and its preparation technology for having temperature-resistance characteristic - Google Patents

A kind of Modified wood plastic composite plate and its preparation technology for having temperature-resistance characteristic Download PDF

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CN107674342A
CN107674342A CN201710995439.6A CN201710995439A CN107674342A CN 107674342 A CN107674342 A CN 107674342A CN 201710995439 A CN201710995439 A CN 201710995439A CN 107674342 A CN107674342 A CN 107674342A
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parts
temperature
plastic composite
composite plate
wood plastic
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陈建伟
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Zhejiang Timber New Material Co Ltd
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Zhejiang Timber New Material Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/22—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment
    • C08L27/24—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers modified by chemical after-treatment halogenated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

Abstract

The present invention relates to a kind of green, possess high heat-resisting, high thermal deformation resistant performance, low temperature can keep itself toughness and possess the Modified wood plastic composite plate and its preparation technology of the tool temperature-resistance characteristic of higher thermal strength characteristics, the present invention enhances the heat resistance of wood plastic composite by way of doping vario-property, it is heated yielding to improve it, catch cold easy embrittlement, the shortcomings of mechanical strength is relatively low, and the pollution-free generation in preparation process, meet the demand of healthy green production, the preparation technology provided can reach homogenous plasticized purpose in the short period of time, generate the effect of energy-conservation.

Description

A kind of Modified wood plastic composite plate and its preparation technology for having temperature-resistance characteristic
Technical field
The present invention relates to a kind of wood-plastic board field, more particularly to it is a kind of it is green, possess high heat-resisting, high thermal deformation resistant Can, low temperature can keep itself toughness and possess higher thermal strength characteristics tool temperature-resistance characteristic Modified wood plastic composite plate and its Preparation technology.
Background technology
Wood-plastic board is one kind with polypropylene（PP）, polyvinyl chloride（PVC）Or polyethylene（PE）It is Deng high molecular polymerization plastics Composite prepared by main matrix mixing wood fibre, being subject to multiple additives improves performance, by being kneaded, extruding and be molded Technique obtains.As a kind of green material, wherein the PVC base wood-plastic composite materials using polyvinyl chloride as main matrix are wide General application is with producing the products such as outdoor plank road plate, external wall, sunshading board and outdoor flooring, although PVC sills moulding material has The advantages that standby green, abundant raw material is easily prepared and cost performance is far above pure woodwork, but still suffer from as outdoor exterior wall, The structural material such as plate and masterplate using when be heated yielding, easy embrittlement of catching cold, mechanical strength is relatively low the shortcomings of, therefore in certain journey Its application is restricted on degree.
The sleet in the exposure of hot summer and severe winter twelfth month can all cause PVC sills moulding material to produce sternly in environment out of doors The damage of weight.Under exposure can cause PVC sill moulding material swelling crackings or temperature distortion, and heated rear mechanical property is quick Drop, larger potential safety hazard is produced when being used as plank road plate or exterior wall etc.；And low temperature then causes PVC sill moulding material obdurabilities Drastically decline, produce larger fragility, the anti-folding of bending resistance is resistance to rush intensity all by large effect, it is serious even produce cracking and Phenomenon of rupture, thus use and be also extremely limited.
For this, further preparation possesses high heat-resisting, high thermal deformation resistant performance and possesses the modeling of higher thermal strength characteristics PVC sills Plate is the key that application field is expanded for PVC sills mould plate.
Patent Office of the People's Republic of China is in the application for a patent for invention for disclosing PVC plastic material in one on June 8 in 2016, Shen Qing Publication Number CN105647059A, the patent of invention on the basic material of conventional PVC base wood-plastic composite materials using being subject to quick lime, leech Stone, dimethyl fumarate and lychee exocarp, luffa vine, dried orange peel, rapeseed oil, then it is subject to special acid additive and sticky auxiliary agent to make It is standby it is a kind of with excellent machinability, good thermal stability, low temperature resistant, caking property is good, corrosion-resistant and with necessarily fire-retardant The PVC base wood-plastic composite materials of performance and soundproof effect, but it is not strengthened in terms of the mechanical property of Wood-plastic material, Mechanical property deficiency is still suffered from when as structural materials such as outdoor exterior wall, floor and masterplates, the problem of potential safety hazard be present.
The content of the invention
The present invention to solve above-mentioned PVC sills moulding material as structural materials such as outdoor exterior wall, floor and masterplates in use, Exposure can cause PVC sill moulding material swelling crackings or temperature distortion, and heated rear mechanical property rapid decrease, as plank road Plate or exterior wall etc. produce larger potential safety hazard when using；And low temperature then causes PVC sill moulding material obdurabilities drastically to decline, production Raw larger fragility, the anti-folding of bending resistance is resistance to rush intensity all by large effect, and serious even produces cracking and phenomenon of rupture, because And use and be also extremely limited；The problems such as mechanical property is relatively low, there is provided one kind is green, it is high heat-resisting, high anti-to possess Thermal deformation behavior, low temperature can keep itself toughness and possess the Modified wood plastic of the tool temperature-resistance characteristic of higher thermal strength characteristics answering Plywood.
It is a further object to provide a kind of preparation technology for the Modified wood plastic composite plate for having temperature-resistance characteristic.
To achieve the above object, the present invention uses following technical scheme：
A kind of Modified wood plastic composite plate for having temperature-resistance characteristic, the preparing raw material bag of the Modified wood plastic composite plate of the tool temperature-resistance characteristic Include the material of following parts by weight：80~110 parts of polyvinyl chloride, 80~110 parts of chliorinated polyvinyl chloride, 3~7 parts of feldspar, slope thread 4~9 parts of stone, 30~60 parts of wood powder, 10~22 parts of coupling agent, 11~20 parts of stabilizer, 15~25 parts of plasticizer and lubricant 15 ~30 parts.
Preferably, the preparing raw material of the Modified wood plastic composite plate of the tool temperature-resistance characteristic includes the thing of following parts by weight Matter：90~100 parts of polyvinyl chloride, 90~100 parts of chliorinated polyvinyl chloride, 4~5.5 parts of feldspar, 5.5~7 parts of palygorskite, wood powder 45 ~55 parts, 15~20 parts of coupling agent, 13~18 parts of stabilizer, 18~22 parts of 18~21 parts of plasticizer and lubricant.
Chliorinated polyvinyl chloride is polyvinyl chloride（PVC）The product obtained after further chlorination, have compared to PVC preferably resistance to Heat and mechanical property, with it is polychloroethylene blended when can play good modifying function.Added into PVC base system material Chliorinated polyvinyl chloride can greatly improve the heat distortion temperature of polyvinyl chloride, and its heat distortion temperature is with chliorinated polyvinyl chloride The increase of addition and it is constantly improve, work as polyvinyl chloride：Chliorinated polyvinyl chloride ratio of weight and number is approximately 1：Its thermal deformation temperature when 1 Degree relative can improve 35%~40% with the PVC base system being modified without chliorinated polyvinyl chloride, can reach more than 90 DEG C, lifting Degree is very big, and polyvinyl chloride：Chliorinated polyvinyl chloride ratio of weight and number is 1：When 1.1~2.0, its heat distortion temperature can It is relative to improve 40%~65% with the PVC base system being modified without chliorinated polyvinyl chloride, but because chliorinated polyvinyl chloride is to polychlorostyrene second The toughness of alkene is strengthened in downward trend after first rising, in polyvinyl chloride：Chliorinated polyvinyl chloride ratio of weight and number is approximately 1：When 1 Its toughness lifting amplitude is maximum, and the most obvious, to be reached after raising during ratio of weight and number thermal deformation is improved to mechanical property The fully sufficient mechanical property for supporting that high intensity can be kept when it is under the high-heat environments such as exposure of temperature, has reached required Use demand temperature, increase the heat distortion temperature of the standard of spilling without sacrificing its toughness.In addition in polyvinyl chloride：Chlorination gathers Vinyl chloride ratio of weight and number is approximately 1：The bending strength of composite and the modulus of elasticity in static bending are compared to without chlorinated polyvinyl chloride second when 1 It is 35~40% and 25~30% that the PVC base system that alkene is modified, which improves ratio, and lifting degree is high.
Preferably, the coupling agent be γ-（2,3- the third oxygen of epoxy）Propyl trimethoxy silicane and maleic anhydride grafting Any one in PLA, the plasticizer are any one in dibutyl phthalate and dioctyl phthalate Kind, the lubricant is super-fine talc, and the stabilizer is 2,6- di-tert-butyl-4-methy phenols.γ-（2,3- epoxies Third oxygen）Propyl trimethoxy silicane nickname silane coupling A -187, it, which has, improves matrix mechanical strength, and it is weather-proof to improve material Property and corrosion proof feature, maleic anhydride grafted polylactic acid be likewise supplied with improve matrix mechanical strength, improve material weatherability and Corrosion proof advantage, while maleic anhydride grafted polylactic acid is a kind of coupling agent of environmental protection and public nuisance free；Dibutyl phthalate It is good plasticizer materials with dioctyl phthalate, the pliability of composite can be increased, gelatinisation ability is strong, surely Qualitative, resistance to deflection, caking property and water proofing property are by better than other plasticizer；2,6- di-tert-butyl-4-methy phenol conducts Stabilizer uses, also with anti-aging, oxidation resistant effect, it is possible to increase the anti-aging of composite, oxidation resistance, but its Lubricity is poor, it is necessary to which lubricant is used cooperatively, thus the super-fine talc added mainly plays reinforcing 2, the uncles of 6- bis- The effect of butyl -4- methylphenol using effects, can be additionally to improve the extrudability of certain composite and sizing energy Power.
Preferably, the wood mesh is the mesh of 80 mesh~300, the feldspar mesh number is the mesh of 3000 mesh~5000, described Palygorskite mesh number is the mesh of 1500 mesh~4000.The wood powder of high mesh number can make its woodiness touch more uniformly significantly, and wood powder provides Wood fibre Uniform Doped its toughness can be further lifted in organic polymer matrix material；The feldspar of high mesh number and slope Thread stone causes implant uniformity to improve, and avoids dopant accumulation and causes local stress to change, the problem of causing easy brittle failure.
Preferably, the feldspar is preferably any one in glassy feldspar, orthoclase and microcline.
Feldspar is the most important rock-forming mineral of surface rock, is the general name of feldspar race mineral, and being that one kind is extremely common contains There is the silicate mineral of calcium, sodium, potassium.Feldspar is all distributed in the whole world, and the ratio of earth's crust andesine is up to 60%, igneous rock, All it may occur in which in metamorphic rock and sedimentary rock, mineral origin is extremely abundant.Feldspar selected by the present invention is in potassium feldspar subtribe Glassy feldspar, orthoclase and microcline as doping phase, it is most primary the reason for be feldspar aboundresources and mutually have as doping There is very strong stability, do not reacted as when adulterating phase with remaining composition, is only entrained in as doping phase form stable Matrix gap.The feldspar of potassium feldspar subtribe has very high hardness, Mohs' hardness 6 and more than, as doping phase, uniformly mix It is miscellaneous in matrix when can greatly enhance the wearability and mechanical strength of matrix material, and potassium feldspar is two groups of complete cleavage, should Characteristic is advantageous to prepare the feldspar micro powder of high mesh number, and glassy feldspar, orthoclase and the microcline of selected high mesh number can increase The compactedness of feldspar doping, and adulterate more uniform, the amplitude that wearability and mechanical strength improve is bigger, while in the opposing party Face compactedness increase improves certain density, especially has more significant lifting to the compression strength of material.
Feldspar and palygorskite mixing and doping, doping weight account for the 3~10% of polyvinyl chloride and chliorinated polyvinyl chloride total weight parts When can improve 15~25 DEG C of the heat distortion temperature of composite, further increase its heat resistance, make its use range more Extensively, even if as sauna house or other be chronically at the intensity for still being able to keep high during use in the environment of high temperature and holding Its shape.
In terms of tensile property, tensile strength with feldspar and the increase of palygorskite doping its composite is in first increasing Add rear downward trend, the gap that first increase is due to its feldspar and palygorskite doping is filled up in composite material base body, and feldspar It is easy to be orientated in two dimensional surface in process with palygorskite, enhancing effect is notable during low dosage, is accounting for the 3 of total weight parts Enhancing effect substantially slows down when~10%, but starts great decline after more than 10%, is due to continue to increase feldspar and palygorskite Dosage composite internal stress defect point can be caused to increase, cause tensile strength to decline, also have in terms of elongation at break Identical effect.
And feldspar and the composite mixed main efficacy results of palygorskite are lifting the bending strength and the modulus of elasticity in static bending of composite Aspect, due to the inorganic rigid particle increase that feldspar and palygorskite provide, hinder the generation and life of the crackle in composite It is long, the stress of crackle initiation is significantly reduced, the rigidity of composite system is substantially increased on the whole, is accounted in doping poly- Vinyl chloride and chliorinated polyvinyl chloride total weight parts 3~10% when can improve 35~50% bending strength and elasticity of flexure mould Amount.
A kind of preparation technology for the Modified wood plastic composite plate for having temperature-resistance characteristic, the preparation technology include following prepare and walked Suddenly：
1）The coupling agent organic solvent diluting of 3~5 times of weight deals is dissolved, dry wood flour is stirred, stirred During vaporific coupling agent of the penetrating after dilution, continue thereafter with 5~15min of stirring, obtain pre-processing wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed at 3~5min of mixing in double roller cylinder mill, then added stable Agent and lubricant are kneaded 10~15min, obtain tentatively being kneaded product；
3）Feldspar and palygorskite are added to step 2）In the preliminary mixing product of gained, 5~10min mixing is carried out to it, Add plasticizer and step 1）The pretreatment wood powder of gained, 20~25min mixings are carried out to it, treat that all materials plasticizing is uniform Slice afterwards, obtain plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, then carries out cooling and shaping with cold press, obtains described Has the Modified wood plastic composite plate of temperature-resistance characteristic.
Preferably, step 1）Described organic solvent is any one in petroleum ether, solvent naphtha and benzene alcohol.
Preferably, step 2）With step 3）Described mixing process melting temperature is 80~110 DEG C.
Preferably, the step 4）The temperature of middle hot pressing is 180~190 DEG C, and pressure is 8~11MPa, during hot pressing Between be 5~8min.
Preferably, the step 4）Middle cooling and shaping temperature is -5~5 DEG C.
Step 1）In coupling agent wood powder surface is uniformly sprayed at after organic solvent diluting, enable to wood powder with coupling The contact of agent is more uniformly abundant, and coupling agent treatment is more abundant.
Succinctly and rapidly and efficiently, it is raw to meet healthy green to the preparation technology for and the pollution-free generation in preparation process The demand of production, wood powder is pre-processed while being kneaded, instead of and be all placed in traditional handicraft in kneading machine at mixing Reason so that the reaction of wood powder and coupling agent is more fully, thoroughly, it is possible to increase product quality, makes in follow-up substep is kneaded Obtaining each component can react more uniformly abundant, and doping is mutually more uniform, and compared with traditional one-step melting, is kneaded energy step by step It is enough to reach homogenous plasticized purpose in the short period of time, generate the effect of energy-conservation.
The beneficial effects of the invention are as follows：
1）The mixing of chliorinated polyvinyl chloride adds and modified effect is produced to polyvinyl chloride, equal to its heat resistance and every mechanical property Larger invigoration effect can be played；
2）γ-（2,3- the third oxygen of epoxy）Propyl trimethoxy silicane and maleic anhydride grafted polylactic acid, which are respectively provided with, improves matrix machinery Intensity, improve material weatherability and corrosion proof feature, while maleic anhydride grafted polylactic acid is a kind of idol of environmental protection and public nuisance free Join agent；
3）Dibutyl phthalate and dioctyl phthalate are good plasticizer materials, can increase composite Pliability, gelatinisation ability is strong, and stability, resistance to deflection, caking property and water proofing property are by better than other plasticizer；
4）2,6- di-tert-butyl-4-methy phenols use as stabilizer, also with anti-aging, oxidation resistant effect, Neng Gouti The anti-aging of high composite, oxidation resistance, super-fine talc can play reinforcing 2, and 6- di-tert-butyl-4-methy phenols make Can be additionally the extrudability and style-ability for improving certain composite with the effect of effect；
5）The doping of feldspar and palygorskite can very significantly lift the heat resistance of composite, draw high performance and flexing resistance Can, and the wearability of composite can be improved, the mechanical property of composite is strengthened in many-side；
6）Succinctly and rapidly and efficiently, and the pollution-free generation in preparation process meets healthy green production to the preparation technology Demand；
7）Compared with the preparation technology of traditional PVC wood plastic material, preparation technology provided by the present invention can be when shorter It is interior to reach homogenous plasticized purpose, generate the effect of energy-conservation.
Embodiment
The technical scheme in the embodiment of the present invention is clearly and completely described with reference to the embodiment of the present invention, shown Right described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention Protection domain.
All raw materials of the present invention are commercially available.
Embodiment 1
1）By the γ-（2,3- the third oxygen of epoxy）The propyl trimethoxy silicane organic solvent diluting of 3 times of weight deals dissolves, Dry wood flour is stirred, in whipping process vaporific γ of the penetrating after dilution-（2,3- the third oxygen of epoxy）Propyl trimethoxy Silane, stirring 5min is continued thereafter with, obtain pre-processing wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed in double roller cylinder mill and are kneaded 5min, melting temperature is 80 DEG C, Then add 2,6- di-tert-butyl-4-methy phenols and super-fine talc is kneaded 10min, obtain tentatively being kneaded product；
3）Orthoclase and palygorskite are added to step 2）In the preliminary mixing product of gained, 5min mixing is carried out to it, mixed It is 80 DEG C to refine temperature, adds dibutyl phthalate and step 1）The pretreatment wood powder of gained, 25min is carried out to it and mixed Refining, melting temperature are 110 DEG C, the slice after all materials plasticizing uniformly, obtain plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, and the temperature of hot pressing is 180 DEG C, and pressure is 11MPa, hot pressing time 5min, then cooling and shaping is carried out with cold press, cooling and shaping temperature is 0 DEG C, obtains the tool heatproof The Modified wood plastic composite plate of characteristic.
Step 1）Described organic solvent is petroleum ether.
The preparing raw material of the Modified wood plastic composite plate of the tool temperature-resistance characteristic includes the material of following parts by weight：Polychlorostyrene second 110 parts of alkene, 80 parts of chliorinated polyvinyl chloride, 3 parts of orthoclase, 9 parts of palygorskite, 30 parts of wood powder, γ-（2,3- the third oxygen of epoxy）Propyl group three 22 parts of methoxy silane, 2,6- 20 parts of di-tert-butyl-4-methy phenols, 25 parts of dibutyl phthalate, super-fine talc 30 parts.
Wood mesh used is 80 mesh, and orthoclase mesh number used is 3000 mesh, and palygorskite mesh number used is 4000 mesh.
Embodiment 2
1）By the γ-（2,3- the third oxygen of epoxy）The propyl trimethoxy silicane organic solvent diluting of 5 times of weight deals dissolves, Dry wood flour is stirred, in whipping process vaporific γ of the penetrating after dilution-（2,3- the third oxygen of epoxy）Propyl trimethoxy Silane, stirring 15min is continued thereafter with, obtain pre-processing wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed in double roller cylinder mill and are kneaded 3min, melting temperature is 110 DEG C, Then add 2,6- di-tert-butyl-4-methy phenols and super-fine talc is kneaded 15min, obtain tentatively being kneaded product；
3）Glassy feldspar and palygorskite are added to step 2）In the preliminary mixing product of gained, 5min mixing is carried out to it, mixed It is 80 DEG C to refine temperature, adds dibutyl phthalate and step 1）The pretreatment wood powder of gained, 20min is carried out to it and mixed Refining, melting temperature are 80 DEG C, the slice after all materials plasticizing uniformly, obtain plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, and the temperature of hot pressing is 185 DEG C, and pressure is 8MPa, hot pressing time 8min, then cooling and shaping is carried out with cold press, cooling and shaping temperature is 5 DEG C, and it is special to obtain the tool heatproof The Modified wood plastic composite plate of property.
Step 1）Described organic solvent is solvent naphtha.
The preparing raw material of the Modified wood plastic composite plate of the tool temperature-resistance characteristic includes the material of following parts by weight：Polychlorostyrene second 110 parts of alkene, 110 parts of chliorinated polyvinyl chloride, 7 parts of glassy feldspar, 4 parts of palygorskite, 60 parts of wood powder, γ-（2,3- the third oxygen of epoxy）Propyl group 10 parts of trimethoxy silane, 2,6- 11 parts of di-tert-butyl-4-methy phenols, 15 parts of dibutyl phthalate, ultra micro fine talc 15 parts of powder.
Wood mesh used is 300 mesh, and glassy feldspar mesh number used is 5000 mesh, and palygorskite mesh number used is 1500 mesh.
Embodiment 3
1）The maleic anhydride grafted polylactic acid organic solvent diluting of 5 times of weight deals is dissolved, dry wood flour is stirred Mix, maleic anhydride grafted polylactic acid of the vaporific penetrating after dilution in whipping process, continue thereafter with stirring 15min, obtain pre- Handle wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed in double roller cylinder mill and are kneaded 5min, melting temperature is 80 DEG C, Then add 2,6- di-tert-butyl-4-methy phenols and super-fine talc is kneaded 15min, obtain tentatively being kneaded product；
3）Glassy feldspar and palygorskite are added to step 2）In the preliminary mixing product of gained, 10min mixing is carried out to it, mixed It is 110 DEG C to refine temperature, adds dioctyl phthalate and step 1）The pretreatment wood powder of gained, 25min is carried out to it and mixed Refining, melting temperature are 110 DEG C, the slice after all materials plasticizing uniformly, obtain plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, and the temperature of hot pressing is 190 DEG C, and pressure is 10MPa, hot pressing time 7min, then cooling and shaping is carried out with cold press, cooling and shaping temperature is -3 DEG C, obtains the tool heatproof The Modified wood plastic composite plate of characteristic.
Step 1）Described organic solvent is solvent naphtha.
The preparing raw material of the Modified wood plastic composite plate of the tool temperature-resistance characteristic includes the material of following parts by weight：Polychlorostyrene second 100 parts of alkene, 90 parts of chliorinated polyvinyl chloride, 5.5 parts of glassy feldspar, 5.5 parts of palygorskite, 55 parts of wood powder, maleic anhydride grafted polylactic acid 15 parts, 2,6- 18 parts of di-tert-butyl-4-methy phenols, 18 parts of dioctyl phthalate, 22 parts of super-fine talc.
Wood mesh used is 200 mesh, and glassy feldspar mesh number used is 4500 mesh, and palygorskite mesh number used is 3500 mesh.
Embodiment 4
1）The maleic anhydride grafted polylactic acid organic solvent diluting of 3 times of weight deals is dissolved, dry wood flour is stirred Mix, maleic anhydride grafted polylactic acid of the vaporific penetrating after dilution in whipping process, continue thereafter with stirring 15min, obtain pre- Handle wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed in double roller cylinder mill and are kneaded 3min, melting temperature is 80 DEG C, Then add 2,6- di-tert-butyl-4-methy phenols and super-fine talc is kneaded 15min, obtain tentatively being kneaded product；
3）Microcline and palygorskite are added to step 2）In the preliminary mixing product of gained, 10min mixing is carried out to it, Melting temperature is 100 DEG C, adds dioctyl phthalate and step 1）The pretreatment wood powder of gained, 25min is carried out to it It is kneaded, melting temperature is 90 DEG C, the slice after all materials plasticizing uniformly, obtains plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, and the temperature of hot pressing is 185 DEG C, and pressure is 10MPa, hot pressing time 8min, then cooling and shaping is carried out with cold press, cooling and shaping temperature is 5 DEG C, obtains the tool heatproof The Modified wood plastic composite plate of characteristic.
Step 1）Described organic solvent is benzene alcohol.
The preparing raw material of the Modified wood plastic composite plate of the tool temperature-resistance characteristic includes the material of following parts by weight：Polychlorostyrene second 90 parts of alkene, 100 parts of chliorinated polyvinyl chloride, 4 parts of microcline, 7 parts of palygorskite, 45 parts of wood powder, maleic anhydride grafted polylactic acid 20 Part, 2,6- 13 parts of di-tert-butyl-4-methy phenols, 21 parts of dioctyl phthalate, 18 parts of super-fine talc.
Wood mesh used is 80 mesh, and microcline mesh number used is 3000 mesh, and palygorskite mesh number used is 1500 mesh.
Embodiment 5
1）The maleic anhydride grafted polylactic acid organic solvent diluting of 3 times of weight deals is dissolved, dry wood flour is stirred Mix, maleic anhydride grafted polylactic acid of the vaporific penetrating after dilution in whipping process, continue thereafter with stirring 15min, obtain pre- Handle wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed in double roller cylinder mill and are kneaded 5min, melting temperature is 100 DEG C, Then add 2,6- di-tert-butyl-4-methy phenols and super-fine talc is kneaded 15min, obtain tentatively being kneaded product；
3）Microcline and palygorskite are added to step 2）In the preliminary mixing product of gained, 10min mixing is carried out to it, Melting temperature is 100 DEG C, adds dioctyl phthalate and step 1）The pretreatment wood powder of gained, 25min is carried out to it It is kneaded, melting temperature is 100 DEG C, the slice after all materials plasticizing uniformly, obtains plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, and the temperature of hot pressing is 180 DEG C, and pressure is 11MPa, hot pressing time 5min, then cooling and shaping is carried out with cold press, cooling and shaping temperature is -5 DEG C, obtains the tool heatproof The Modified wood plastic composite plate of characteristic.
Step 1）Described organic solvent is benzene alcohol.
The preparing raw material of the Modified wood plastic composite plate of the tool temperature-resistance characteristic includes the material of following parts by weight：Polychlorostyrene second 100 parts of alkene, 100 parts of chliorinated polyvinyl chloride, 5.5 parts of microcline, 5.5 parts of palygorskite, 50 parts of wood powder, the poly- breast of maleic anhydride grafting 18 parts of acid, 2,6- 15 parts of di-tert-butyl-4-methy phenols, 20 parts of dioctyl phthalate, 20 parts of super-fine talc.
Wood mesh used is 300 mesh, and microcline mesh number used is 5000 mesh, and palygorskite mesh number used is 4000 mesh.
Above example 1~5 is detected, testing result is as follows：
1）Heat distortion temperature detects：After testing, the heat of the Modified wood plastic composite plate of the tool temperature-resistance characteristic obtained by embodiment 1~5 Deformation temperature is more than 105 DEG C, with good heat resistance when being used as external wall and outdoor flooring etc.；
2）Thermal coefficient of expansion detects：After testing, the heat of the Modified wood plastic composite plate of the tool temperature-resistance characteristic obtained by embodiment 1~5 The coefficient of expansion is 22~30；
3）60 DEG C of mechanics properties testings：After testing, the Modified wood plastic composite plate of the tool temperature-resistance characteristic obtained by embodiment 1~5 exists The conservation rate of bending strength and the modulus of elasticity in static bending is more than 87% under the conditions of 60 DEG C, i.e., under normal outdoor use condition Mechanical property can keep higher level；
4）Anti-freezing cracking performance detects：After testing, the Modified wood plastic composite plate of the tool temperature-resistance characteristic obtained by embodiment 1~5 Occur under the conditions of -20 DEG C without freezing cracking phenomena；
5）Cryogenic mechanics performance detects：After testing, obtained by embodiment 1~5 tool temperature-resistance characteristic Modified wood plastic composite plate- The conservation rate of each mechanical property still keeps preferable mechanical property at low temperature more than 90% under the conditions of 10 DEG C.

Claims (10)

1. a kind of Modified wood plastic composite plate for having temperature-resistance characteristic, it is characterised in that the Modified wood plastic of the tool temperature-resistance characteristic is compound The preparing raw material of plate includes the material of following parts by weight：80~110 parts of polyvinyl chloride, 80~110 parts of chliorinated polyvinyl chloride are long 3~7 parts of stone, 4~9 parts of palygorskite, 30~60 parts of wood powder, 10~22 parts of coupling agent, 11~20 parts of stabilizer, plasticizer 15~ 25 parts and 15~30 parts of lubricant.
A kind of 2. Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 1, it is characterised in that the tool heatproof The preparing raw material of the Modified wood plastic composite plate of characteristic includes the material of following parts by weight：90~100 parts of polyvinyl chloride, chlorination gathers 90~100 parts of vinyl chloride, 4~5.5 parts of feldspar, 5.5~7 parts of palygorskite, 45~55 parts of wood powder, 15~20 parts of coupling agent are stable 18~22 parts of 13~18 parts of agent, 18~21 parts of plasticizer and lubricant.
A kind of 3. Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 2, it is characterised in that the coupling agent For γ-（2,3- the third oxygen of epoxy）Any one in propyl trimethoxy silicane and maleic anhydride grafted polylactic acid, the plasticising Agent is any one in dibutyl phthalate and dioctyl phthalate, and the lubricant is super-fine talc, The stabilizer is 2,6- di-tert-butyl-4-methy phenols.
A kind of 4. Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 3, it is characterised in that the wood powder mesh Number is the mesh of 80 mesh~300, and the feldspar mesh number is the mesh of 3000 mesh~5000, and the palygorskite mesh number is the mesh of 1500 mesh~4000.
5. a kind of Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 4, it is characterised in that the feldspar is excellent Elect any one in glassy feldspar, orthoclase and microcline as.
6. a kind of preparation technology of the Modified wood plastic composite plate of tool temperature-resistance characteristic as described in claim 1 to 5 any one, its It is characterised by, the preparation technology includes following preparation process：
1）The coupling agent organic solvent diluting of 3~5 times of weight deals is dissolved, dry wood flour is stirred, stirred During vaporific coupling agent of the penetrating after dilution, continue thereafter with 5~15min of stirring, obtain pre-processing wood powder；
2）Polyvinyl chloride and chliorinated polyvinyl chloride are collectively disposed at 3~5min of mixing in double roller cylinder mill, then added stable Agent and lubricant are kneaded 10~15min, obtain tentatively being kneaded product；
3）Feldspar and palygorskite are added to step 2）In the preliminary mixing product of gained, 5~10min mixing is carried out to it, Add plasticizer and step 1）The pretreatment wood powder of gained, 20~25min mixings are carried out to it, treat that all materials plasticizing is uniform Slice afterwards, obtain plastifying piece；
4）By step 3）The plasticizing piece of gained carries out hot pressing using hot press, then carries out cooling and shaping with cold press, obtains described Has the Modified wood plastic composite plate of temperature-resistance characteristic.
A kind of 7. preparation technology of Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 6, it is characterised in that Step 1）Described organic solvent is any one in petroleum ether, solvent naphtha and benzene alcohol.
A kind of 8. preparation technology of Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 6, it is characterised in that Step 2）With step 3）Described mixing process melting temperature is 80~110 DEG C.
A kind of 9. preparation technology of Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 6, it is characterised in that The step 4）The temperature of middle hot pressing is 180~190 DEG C, and pressure is 8~11MPa, and hot pressing time is 5~8min.
10. a kind of preparation technology of Modified wood plastic composite plate for having temperature-resistance characteristic according to claim 6, its feature exist In the step 4）Middle cooling and shaping temperature is -5~5 DEG C.
CN201710995439.6A 2017-10-23 2017-10-23 A kind of Modified wood plastic composite plate and its preparation technology for having temperature-resistance characteristic Pending CN107674342A (en)

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