CN108034171A - A kind of PVC wood plastic composite material and preparation method thereof - Google Patents
A kind of PVC wood plastic composite material and preparation method thereof Download PDFInfo
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- CN108034171A CN108034171A CN201711461467.6A CN201711461467A CN108034171A CN 108034171 A CN108034171 A CN 108034171A CN 201711461467 A CN201711461467 A CN 201711461467A CN 108034171 A CN108034171 A CN 108034171A
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- C08J2327/00—Characterised by the use 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; Derivatives of such polymers
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- C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
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Abstract
The invention belongs to composites processing technology field, specifically a kind of PVC wood plastic composite material and preparation method thereof.Each constituent and its ratio of weight and number of the wood plastic composite be：50 ~ 60 parts of polyvinyl chloride, 60 ~ 70 parts of plant fiber powders, 5 ~ 6 parts of glass fibres, 5 ~ 10 parts of unsaturated polyester resins, 10 ~ 15 parts of dimethyl silicone polymers, the pungent fat of 3 ~ 6 parts of epoxystearic acids, 10 ~ 15 parts of chlorinated paraffins, 6 ~ 8 parts of N methyl pyrrolidones, 2 ~ 3 parts of oleamides, 1 ~ 4 part of coupling agent, 2 ~ 3 parts of initiators, 2 ~ 11 parts of ultra-violet absorbers, appropriate mixed gel liquid.Preparation method carries out mixed at high speed to be first modified to plant fiber powder, then with other raw materials, through over-mastication, hot-forming, then again Best-Effort request plated film up to PVC wood plastic composite material.The PVC wood plastic composite material intensity of the present invention is high, and stability is good, and resistance to ag(e)ing is strong, service life length.
Description
Technical field
The invention belongs to composites processing technology field, specifically a kind of PVC wood plastic composite material and its preparation
Method.
Background technology
Wood plastic composite (wood plastic composites, WPC) referred to as " wood moulding ", refer to by polyethylene (PE),
The biomass fiber material such as the thermoplastic such as polypropylene (PP) or polyvinyl chloride (PVC) and wood powder, bamboo powder, straw powder, shell powder
A kind of composite material to be formed is processed by melt blending.It is a kind of material of recyclable processing, environmentally protective, has wood concurrently
The good characteristic of material and plastics, can use extrusion, compacting or injection molding method to prepare.Wood plastic composite can saw, can
Bore, can bond, fixed, easily fixed with nail or screw, and it is also steady with good waterproof, anti-corrosion, resistance to ag(e)ing, size
Qualitative and good mechanical property, has unique performance at many aspects.
Chinese patent 201510252612.4 discloses a kind of PVC base wood-plastic composite materials and preparation method thereof, the PVC bases
Wood plastic composite is made of the raw material of following parts by weight：100 parts of polyvinyl chloride, 1 ~ 3 part of stabilizer, fatty acid soaps 1 ~ 2
Part, modifier ACR1 ~ 3 part, 8 ~ 10 parts of reactive toughening agent, 20 ~ 50 parts of wood powder, 2 ~ 4 parts of Tissuemat E；Preparation method is
Put after polyvinyl chloride, wood powder, Tissuemat E, stabilizer, fatty acid soaps, modifier ACR and reactive toughening agent are mixed
Enter in double screw extruder and extrude, obtain PVC base wood-plastic composite materials.The wood plastic composite of the invention can effectively solve the problem that
Wood plastic composite mechanical property and it is of high cost the problem of.
Chinese patent 201510530407.X discloses a kind of environmentally protective PVC wood plastic composite material, and the PVC wood plastic is compound
Material is made of the raw material of following parts by weight：Wood powder 30-40, butyl acrylate 10-20, benzoyl peroxide 0.02-
0.03rd, n,N-Dimethylaniline 0.01-0.02, Tissuemat E 3-4, thiodipropionic acid dilauryl cinnamic acid ester 1-1.2, calcium stearate
1.5-2, polyvinyl chloride 95-100, AC foaming agent 2-3, cell modifiers ACR5301-2, haloflex 6-8, silicone oil 0.5-
0.8th, sodium-based montmorillonite 3-4, boron nitride 2-3, silane coupling agent kh5700.2-0.4.The preparation method of the invention is simple, green
Colour circle is protected, low-carbon is pollution-free.
Wood plastic composite has lot of advantages, has been widely used among the life of people.Answered due to forming wood moulding
The wood powder and plastics of condensation material belong to combustible material, and the higher place of fire prevention has certain requirement to wood plastic composite, greatly
Most wood plastic composites are all to improve the fire resistance of wood plastic composite by adding fire retardant, but can be there are some
Problem, such as can produce pollutant in combustion or loading is larger, i.e., uneconomical and increase cost, while wood moulding is answered
The mechanical property of condensation material has influenced.Lignocellulosic surface has a large amount of activity hydroxies, thus with oil loving resin circle
Face binding ability is weak, causes wood plastic composite opposed plastic product to be easier moisture absorption, while can cause wood plastic composite
Mechanical properties decrease.Plus, using thermoplastic resin as matrix resin, there are brittleness is big, intensity is not high in wood plastic composite
Problem, it is impossible to as load-bearing material.The problem of above-mentioned, limits the development of wood plastic composite.
The content of the invention
The present invention provides a kind of PVC wood plastic composite material and preparation method thereof, which can form
Good interface, intensity is high, and stability is good, and resistance to ag(e)ing is strong, and service life length, disclosure satisfy that more use demands more.
The solution of the present invention is realized in this way：A kind of PVC wood plastic composite material, each group of the wood plastic composite
It is into component and its ratio of weight and number：50 ~ 60 parts of polyvinyl chloride, 60 ~ 70 parts of plant fiber powders, 5 ~ 6 parts of glass fibres, 5 ~ 10 parts
Unsaturated polyester resin, 10 ~ 15 parts of dimethyl silicone polymers, the pungent fat of 3 ~ 6 parts of epoxystearic acids, 10 ~ 15 parts of chlorinated paraffins, 6 ~ 8
It is part 1-methyl-2-pyrrolidinone, 2 ~ 3 parts of oleamides, 1 ~ 4 part of coupling agent, 2 ~ 3 parts of initiators, 2 ~ 11 parts of ultra-violet absorbers, suitable
Measure mixed gel liquid.
The technical principle that the present invention realizes is：
First plant fiber powder is modified, it is had more preferable compatibility with oil loving resin, improves mechanical property, then
Carry out mixing plasticizing with other raw materials again, then by hot-forming, Best-Effort request plated film is carried out after sample needed for being prepared into
Surface of wood-plastic composite material is formed one layer of super-hydrophobic film layer, form super hydrophobic surface, the contact angle of the surface and water is more than
150 °, slide angle is less than 10 °, because it is non-in material surface with extremely low surface free energy and coarse configuration of surface, water droplet
Chang Rongyi is tumbled, so the wood plastic composite of the present invention has clean contaminants, do not intake, is moisture-proof, is mould proof, corrosion resistant work(
The characteristics of energy, anti-aging property is strong, and service life is high.Raw materials used super hydrophobic surface is silica and polytetrafluoroethylene (PTFE) and idol
Connection agent KH-560, KH-560, which not only carry out silica surface modification, prevents silica from reuniting, also with good film forming
Performance makes surface of wood-plastic composite material form good protection film layer, while sol solutions can also be promoted compatible with composite material,
Improve the caking property of hydrophobic surface and wood plastic composite.Silica can be dispersed in ptfe emulsion, with
The evaporation of solvent, silica has the function that polytetrafluoroethylene (PTFE) embedding, attachment, and silica is formed with polytetrafluoroethylene (PTFE)
Cross one another network structure, it is not easily to fall off, the adhesive property of polytetrafluoroethylene (PTFE) and composite material is enhanced, in addition polytetrafluoroethyl-ne
Alkene has a high resistance to chemical corrosion, nonhygroscopic, do not burn, to ultraviolet and oxidation stability, has excellent weatherability, energy
Enough strengthen the weatherability of wood plastic composite, improve the service life of wood plastic composite.
Using pine powder, camphorwood powder, elm powder, maple powder, fir powder, tree-of-heaven wood powder, the mixing of chinaberry wood powder in the present invention
Thing all there is certain sterilization and disinsection to act on as wood powder raw material, these trees, can suppress wood plastic composite and not lost by moth,
And these trees can give out the material beneficial to human body, can promote health.
Unsaturated polyester resin can be with glass fibre with firm chemical bonds in the present invention, while initiator two is different
Butyric acid dimethyl ester and diisopropyl imidazole hydrochloride can trigger the insatiable hunger in polyester and styrene in unsaturated polyester resin
It is allowed to react with double bond, forms insoluble netted stereo chemical structure, wood plastic composite is obtained more excellent mechanical property
With longer service life.
Using the pungent fat of epoxystearic acid, chlorinated paraffin as the plasticizer of polyvinyl chloride, the brittleness of polyvinyl chloride can be reduced,
The toughness of polyvinyl chloride is improved, is conducive to polytetrafluoroethylene (PTFE) and is easily worked, while chlorinated paraffin can also play the work of fire retardant
With, improve the present invention wood plastic composite fire resistance.
1-methyl-2-pyrrolidinone dissolving power is capable of by force the dissolubility of reinforced polyvinyl chloride, promotes polyvinyl chloride and other raw materials
Mixing compatibility, improve polyvinyl chloride dispersion performance in the feed.It is 1-methyl-2-pyrrolidinone small toxicity, nonflammable, biological
Degradability is good, recoverable, harmless to the wood plastic composite that is prepared.
Since polyvinyl chloride is to light and thermally stable poor performance, by more than 100 DEG C or by long-time solar exposure, meeting
Decomposition causes wood plastic composite mechanical performance to decline rapidly, and N- substituted alkoxies hindered amine, triazine-based ultraviolet absorbent are answered
The stability of polyvinyl chloride, enhancing wood plastic composite photo-thermal stabilization and mechanical property can be improved by closing use.N- substitutions at the same time
Alkoxy hindered amine is also used as fire retardant, and N- substituted alkoxies hindered amine produces in wood plastic composite burning thermal decomposition
Free radical barrier cooling reduce the feedback of heat, so as to play fire-retardant effect, N- substituted alkoxies hindered amine and chlorination stone
Wax acts synergistically, and enhances the fire resistance of wood plastic composite.
As a further improvement on the present invention, the plant fiber powder is selected from rice hull cellulose powder, wood powder, hemp
The mixture of fiber powder, coconut shell flour；
As a further improvement on the present invention, the coupling agent is selected from maleic anhydride grafted polyethylene, maleic anhydride grafting gathers
One or more kinds of combinations in propylene；
As a further improvement on the present invention, the initiator is selected from two isobutyl dimethyl phthalates, diisopropyl imidazole hydrochloride
Mixture；
As a further improvement on the present invention, it is ultraviolet to be selected from N- substituted alkoxies hindered amine, triazines for the UV resistant agent
The mixture of light absorbers.
As a further improvement on the present invention, the plant fiber powder is dried plant fiber powder, its particle diameter is big
Small is 80 ~ 100 mesh.
As a further improvement on the present invention, the wood powder is selected from pine powder, camphorwood powder, elm powder, maple powder, China fir
Powder, tree-of-heaven wood powder, the mixture of chinaberry wood powder.
As a further improvement on the present invention, the mixed gel liquid and preparation method thereof is：By 2 ~ 3 parts of KH-560,10 ~ 15
Part water and 5 ~ 6 parts of absolute ethyl alcohols mixing, the magnetic agitation 15min under conditions of pH=5,45 DEG C, add 20 ~ 25 parts of acid silicon
Colloidal sol, reaction 1h obtain modified Ludox；20 ~ 25 parts of ptfe emulsions are slowly dropped in above-mentioned sol system simultaneously
Add after dimethylformamide and adjust mixed emulsion to pH=5 with acid；Constant temperature after reaction 2.5h at 30 DEG C is aged 24h, is mixed
Close coagulant liquid.
A kind of method for preparing PVC wood plastic composite material, preparation method step include：
S1 plant fiber powders are modified：60 ~ 70 parts of plant fiber powders are taken, 1 ~ 4 part of coupling agent is added, is pre-mixed in high-speed mixer
30~60min；
S2 material high-speed mixes：5 ~ 6 parts of glass fibres, 5 ~ 10 parts of unsaturated polyester resins, 10 ~ 15 parts of poly dimethyls are weighed respectively
Siloxanes, the pungent fat of 3 ~ 6 parts of epoxystearic acids, 10 ~ 15 parts of chlorinated paraffins, 6 ~ 8 parts of 1-methyl-2-pyrrolidinones, 2 ~ 3 parts of oleamides,
2 ~ 3 parts of initiators, 2 ~ 11 parts of ultra-violet absorbers are added to be stirred in high-speed mixer and are mixed to get mixed material；
S3 plasticates：The mixed material that S2 is obtained is placed in double rod plasticators and mixes plasticizing, is prepared into moulding compound；
S4 is hot-forming：The moulding compound that step S3 is prepared again carries out hot-forming, cutting as requested by hot press
Into required sample composite material, be subsequently cooled to 30 DEG C it is spare；
S5 lifts plated film：The step S4 composite materials being prepared are immersed in mixed gel liquid, carry out Best-Effort request plated film,
Pull rate is 10 ~ 15cm/min, and the composite material after lifting is cured 60 ~ 90min at 150 ~ 160 DEG C, that is, obtains institute
The wood plastic composite needed.
As a further improvement on the present invention, it is controlled at 70 ~ 80 DEG C, mixing speed in the mixed at high speed
120 ~ 150r/min, incorporation time are 15 ~ 20min.
As a further improvement on the present invention, the plasticization temperature is 140 ~ 150 DEG C, and fusion time is 5 ~ 10min.
As a further improvement on the present invention, the hot pressing temperature be 160 ~ 180 DEG C, pressure be 6 ~ 10MPa, during hot pressing
Between be 50 ~ 80s.
The present invention possesses following good result：
1. the wood plastic composite of the present invention can cross the advantage for giving full play to each raw material, the comprehensive of wood plastic composite is effectively improved
Close performance.
2. the wood plastic composite of the present invention is biodegradable, recoverable, environmentally protective.
3. the wood-plastic composite material products good stability of the dimension of the present invention, corrosion-resistant, moistureproof and mildewproof effect is good, service life
It is long, have a wide range of application.
4. the present invention wood plastic composite water absorption rate≤2.3%, tensile strength >=260Mpa, bending strength >=237Mpa,
Flexural spring modulus >=8500Mpa, heated dimensions change rate≤0.11%, limited oxygen index >=40%, resisting wind press capacity >=
5.3kPa, heat distortion temperature >=234 DEG C, service life >=50 year；The wood plastic composite mechanical property being prepared is good, water suction
Rate is low, and fire resistance is good, has vast potential for future development.
Embodiment
A kind of PVC wood plastic composite material of the description present invention and preparation method thereof with reference to embodiments, these descriptions are not
It is that present invention is further limited.
Embodiment 1
It is prepared by mixed gel liquid：2.5 parts of KH-560,14 parts of water and 5.5 parts of absolute ethyl alcohols are mixed, in pH=5,45 DEG C of condition
Lower magnetic agitation 15min, adds 23 parts of acidic silicasols, and reaction 1h obtains modified Ludox；By 23 parts of polytetrafluoroethylene (PTFE)
Lotion is slowly dropped in above-mentioned sol system and adds after dimethylformamide adjusts mixed emulsion to pH=5 with acid；Reaction
Constant temperature after 2.5h at 30 DEG C is aged 24h, obtains mixed gel liquid；
Plant fiber powder is modified：62 parts of plant fiber powders are taken, 1 part of coupling agent is added, 30min is pre-mixed in high-speed mixer；
Material high-speed mixes：5.2 parts of glass fibres, 9 parts of unsaturated polyester resins, 15 parts of dimethyl silicone polymers, 5 are weighed respectively
The pungent fat of part epoxystearic acid, 12 parts of chlorinated paraffins, 8 parts of 1-methyl-2-pyrrolidinones, 3 parts of oleamides, 2 parts of initiators, 11 parts of purples
Ultraviolet absorbers, which are added in high-speed mixer, is stirred mixing, is controlled at 80 DEG C, mixing speed in mixed process
140r/min, incorporation time 18min, obtains mixed material；
Plasticate：Obtained mixed material is placed in double rod plasticators and mixes plasticizing, plasticization temperature is 140 DEG C, and fusion time is
10min, is prepared into moulding compound；
It is hot-forming：Again that obtained moulding compound is hot-forming by hot press progress, hot pressing temperature is 165 DEG C, pressure is
8MPa, hot pressing time 60s, be then cut into as requested needed for sample composite material, be subsequently cooled to 30 DEG C it is spare；
Lift plated film：Obtained composite material is immersed in mixed gel liquid, carries out Best-Effort request plated film, pull rate is
11cm/min, cures 90min at 160 DEG C by the composite material after lifting, that is, obtains required wood plastic composite.
Embodiment 2
It is prepared by mixed gel liquid：2 parts of KH-560,10 parts of water and 5 parts of absolute ethyl alcohols are mixed, the magnetic under conditions of pH=5,45 DEG C
Power stirs 15min, adds 24 parts of acidic silicasols, and reaction 1h obtains modified Ludox；By 24 parts of ptfe emulsions
It is slowly dropped in above-mentioned sol system and adds after dimethylformamide and adjusts mixed emulsion to pH=5 with acid；After reacting 2.5h
24h is aged in 30 DEG C of constant temperature, obtains mixed gel liquid；
Plant fiber powder is modified：60 parts of plant fiber powders are taken, 2 parts of coupling agents is added, 40min is pre-mixed in high-speed mixer；
Material high-speed mixes：5 parts of glass fibres, 10 parts of unsaturated polyester resins, 12 parts of dimethyl silicone polymers, 3 are weighed respectively
The pungent fat of part epoxystearic acid, 13 parts of chlorinated paraffins, 6 parts of 1-methyl-2-pyrrolidinones, 2 parts of oleamides, 2.5 parts of initiators, 6 parts of purples
Ultraviolet absorbers, which are added in high-speed mixer, is stirred mixing, is controlled at 72 DEG C, mixing speed in mixed process
130r/min, incorporation time 17min, obtains mixed material；
Plasticate：Obtained mixed material is placed in double rod plasticators and mixes plasticizing, plasticization temperature is 150 DEG C, and fusion time is
6min, is prepared into moulding compound；
It is hot-forming：Again that obtained moulding compound is hot-forming by hot press progress, hot pressing temperature is 180 DEG C, pressure is
6MPa, hot pressing time 50s, be then cut into as requested needed for sample composite material, be subsequently cooled to 30 DEG C it is spare；
Lift plated film：Obtained composite material is immersed in mixed gel liquid, carries out Best-Effort request plated film, pull rate is
10cm/min, cures 80min at 152 DEG C by the composite material after lifting, that is, obtains required wood plastic composite.
Embodiment 3
It is prepared by mixed gel liquid：3 parts of KH-560,11 parts of water and 6 parts of absolute ethyl alcohols are mixed, the magnetic under conditions of pH=5,45 DEG C
Power stirs 15min, adds 22 parts of acidic silicasols, and reaction 1h obtains modified Ludox；By 22 parts of ptfe emulsions
It is slowly dropped in above-mentioned sol system and adds after dimethylformamide and adjusts mixed emulsion to pH=5 with acid；After reacting 2.5h
24h is aged in 30 DEG C of constant temperature, obtains mixed gel liquid；
Plant fiber powder is modified：70 parts of plant fiber powders are taken, 3 parts of coupling agents is added, 60min is pre-mixed in high-speed mixer；
Material high-speed mixes：5.8 parts of glass fibres, 6 parts of unsaturated polyester resins, 10 parts of dimethyl silicone polymers, 6 are weighed respectively
The pungent fat of part epoxystearic acid, 10 parts of chlorinated paraffins, 7 parts of 1-methyl-2-pyrrolidinones, 2.5 parts of oleamides, 3 parts of initiators, 9 parts of purples
Ultraviolet absorbers, which are added in high-speed mixer, is stirred mixing, is controlled at 78 DEG C, mixing speed in mixed process
140r/min, incorporation time 20min, obtains mixed material；
Plasticate：Obtained mixed material is placed in double rod plasticators and mixes plasticizing, plasticization temperature is 145 DEG C, and fusion time is
5min, is prepared into moulding compound；
It is hot-forming：Again that obtained moulding compound is hot-forming by hot press progress, hot pressing temperature is 160 DEG C, pressure is
10MPa, hot pressing time 65s, be then cut into as requested needed for sample composite material, be subsequently cooled to 30 DEG C it is spare；
Lift plated film：Obtained composite material is immersed in mixed gel liquid, carries out Best-Effort request plated film, pull rate is
14cm/min, cures 75min at 158 DEG C by the composite material after lifting, that is, obtains required wood plastic composite.
Embodiment 4
It is prepared by mixed gel liquid：2.5 parts of KH-560,13 parts of water and 5 parts of absolute ethyl alcohols are mixed, under conditions of pH=5,45 DEG C
Magnetic agitation 15min, adds 20 parts of acidic silicasols, and reaction 1h obtains modified Ludox；By 20 parts of polytetrafluoroethylene (PTFE) breasts
Liquid is slowly dropped in above-mentioned sol system and adds after dimethylformamide adjusts mixed emulsion to pH=5 with acid；React 2.5h
The constant temperature at 30 DEG C is aged 24h afterwards, obtains mixed gel liquid；
Plant fiber powder is modified：68 parts of plant fiber powders are taken, 4 parts of coupling agents is added, 50min is pre-mixed in high-speed mixer；
Material high-speed mixes：Weigh respectively 6 parts of glass fibres, 5 parts of unsaturated polyester resins, 11 parts of dimethyl silicone polymers, 4 parts
The pungent fat of epoxystearic acid, 15 parts of chlorinated paraffins, 7.5 parts of 1-methyl-2-pyrrolidinones, 3 parts of oleamides, 2.5 parts of initiators, 2 parts of purples
Ultraviolet absorbers, which are added in high-speed mixer, is stirred mixing, is controlled at 75 DEG C, mixing speed in mixed process
120r/min, incorporation time 15min, obtains mixed material；
Plasticate：Obtained mixed material is placed in double rod plasticators and mixes plasticizing, plasticization temperature is 140 DEG C, and fusion time is
8min, is prepared into moulding compound；
It is hot-forming：Again that obtained moulding compound is hot-forming by hot press progress, hot pressing temperature is 170 DEG C, pressure is
7MPa, hot pressing time 80s, be then cut into as requested needed for sample composite material, be subsequently cooled to 30 DEG C it is spare；
Lift plated film：Obtained composite material is immersed in mixed gel liquid, carries out Best-Effort request plated film, pull rate is
15cm/min, cures 60min at 150 DEG C by the composite material after lifting, that is, obtains required wood plastic composite.
Embodiment 5
It is prepared by mixed gel liquid：3 parts of KH-560,12 parts of water and 6 parts of absolute ethyl alcohols are mixed, the magnetic under conditions of pH=5,45 DEG C
Power stirs 15min, adds 25 parts of acidic silicasols, and reaction 1h obtains modified Ludox；By 25 parts of ptfe emulsions
It is slowly dropped in above-mentioned sol system and adds after dimethylformamide and adjusts mixed emulsion to pH=5 with acid；After reacting 2.5h
24h is aged in 30 DEG C of constant temperature, obtains mixed gel liquid；
Plant fiber powder is modified：65 parts of plant fiber powders are taken, 3 parts of coupling agents is added, 50min is pre-mixed in high-speed mixer；
Material high-speed mixes：5.5 parts of glass fibres, 8 parts of unsaturated polyester resins, 14 parts of dimethyl silicone polymers, 5 are weighed respectively
The pungent fat of part epoxystearic acid, 14 parts of chlorinated paraffins, 6.5 parts of 1-methyl-2-pyrrolidinones, 2.5 parts of oleamides, 2 parts of initiators, 4 parts
Ultra-violet absorber, which is added in high-speed mixer, is stirred mixing, controlled at 70 DEG C in mixed process, mixing speed
For 150r/min, incorporation time 15min, obtains mixed material；
Plasticate：Obtained mixed material is placed in double rod plasticators and mixes plasticizing, plasticization temperature is 140 DEG C, and fusion time is
8min, is prepared into moulding compound；
It is hot-forming：Again that obtained moulding compound is hot-forming by hot press progress, hot pressing temperature is 170 DEG C, pressure is
7MPa, hot pressing time 80s, be then cut into as requested needed for sample composite material, be subsequently cooled to 30 DEG C it is spare；
Lift plated film：Obtained composite material is immersed in mixed gel liquid, carries out Best-Effort request plated film, pull rate is
15cm/min, cures 60min at 150 DEG C by the composite material after lifting, that is, obtains required wood plastic composite.
The PVC wood plastic composite material that above example is prepared is tested for the property, with commercially available PVC wood composite wood
Expect to be contrasted for control sample, test method and result are as shown in the table：
1 product performance index of table
The above embodiment of the present invention scheme is only the description of the invention and cannot limit the present invention, this is indicated in claim
Invention product form component, component ratio, the scope of preparation method parameter, and above-mentioned explanation does not point out parameter of the present invention
Scope, therefore, any change within the meaning and scope equivalent to the claims of the present invention, be all considered to be including
In the range of claims.
The present invention is by multidigit wood plastic composite processing staff's long-term work experience accumulation, and passes through creative work
Create, PVC wood plastic composite material mechanical property of the invention is good, and water absorption rate is low, and fire resistance is good, is that one kind has development
The wood plastic composite of prospect.
Claims (9)
1. a kind of PVC wood plastic composite material, it is characterised in that each constituent and its ratio of weight and number of the wood plastic composite
For：50 ~ 60 parts of polyvinyl chloride, 60 ~ 70 parts of plant fiber powders, 5 ~ 6 parts of glass fibres, 5 ~ 10 parts of unsaturated polyester resins, 10 ~ 15
Part dimethyl silicone polymer, the pungent fat of 3 ~ 6 parts of epoxystearic acids, 10 ~ 15 parts of chlorinated paraffins, 6 ~ 8 parts of 1-methyl-2-pyrrolidinones, 2 ~ 3
Part oleamide, 1 ~ 4 part of coupling agent, 2 ~ 3 parts of initiators, 2 ~ 11 parts of ultra-violet absorbers, appropriate mixed gel liquid；
The plant fiber powder is selected from rice hull cellulose powder, wood powder, hemp powder, the mixture of coconut shell flour；
The coupling agent is one or more kinds of in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene
Combination；
The initiator is selected from two isobutyl dimethyl phthalates, the mixture of diisopropyl imidazole hydrochloride；
The UV resistant agent is selected from N- substituted alkoxies hindered amine, the mixture of triazine-based ultraviolet absorbent.
2. a kind of PVC wood plastic composite material according to claim 1, it is characterised in that the plant fiber powder is dry
Plant fiber powder after dry, its particle size are 80 ~ 100 mesh.
A kind of 3. PVC wood plastic composite material according to claim 1, it is characterised in that the wood powder be selected from pine powder,
Camphorwood powder, elm powder, maple powder, fir powder, tree-of-heaven wood powder, the mixture of chinaberry wood powder.
4. a kind of PVC wood plastic composite material according to claim 1, it is characterised in that prepared by the mixed gel liquid
Method is：2 ~ 3 parts of KH-560,10 ~ 15 parts of water and 5 ~ 6 parts of absolute ethyl alcohols are mixed, the magnetic agitation under conditions of pH=5,45 DEG C
15min, adds 20 ~ 25 parts of acidic silicasols, and reaction 1h obtains modified Ludox；By 20 ~ 25 parts of ptfe emulsions
It is slowly dropped in above-mentioned sol system and adds after dimethylformamide and adjusts mixed emulsion to pH=5 with acid；After reacting 2.5h
24h is aged in 30 DEG C of constant temperature, obtains mixed gel liquid.
A kind of 5. method for preparing PVC wood plastic composite material as claimed in claim 1, it is characterised in that the preparation side
Method step includes：
S1 plant fiber powders are modified：60 ~ 70 parts of plant fiber powders are taken, 1 ~ 4 part of coupling agent is added, is pre-mixed in high-speed mixer
30~60min；
S2 material high-speed mixes：5 ~ 6 parts of glass fibres, 5 ~ 10 parts of unsaturated polyester resins, 10 ~ 15 parts of poly dimethyls are weighed respectively
Siloxanes, the pungent fat of 3 ~ 6 parts of epoxystearic acids, 10 ~ 15 parts of chlorinated paraffins, 6 ~ 8 parts of 1-methyl-2-pyrrolidinones, 2 ~ 3 parts of oleamides,
2 ~ 3 parts of initiators, 2 ~ 11 parts of ultra-violet absorbers are added to be stirred in high-speed mixer and are mixed to get mixed material；
S3 plasticates：The mixed material that S2 is obtained is placed in double rod plasticators and mixes plasticizing, is prepared into moulding compound；
S4 is hot-forming：The moulding compound that step S3 is prepared again carries out hot-forming, cutting as requested by hot press
Into required sample composite material, be subsequently cooled to 30 DEG C it is spare；
S5 lifts plated film：The step S4 composite materials being prepared are immersed in mixed gel liquid, carry out Best-Effort request plated film,
Pull rate is 10 ~ 15cm/min, and the composite material after lifting is cured 60 ~ 90min at 150 ~ 160 DEG C, that is, obtains institute
The wood plastic composite needed.
6. the method according to claim 5 for preparing PVC wood plastic composite material, it is characterised in that the mixed at high speed
In controlled at 70 ~ 80 DEG C, mixing speed is 120 ~ 150r/min, and incorporation time is 15 ~ 20min.
7. the method according to claim 5 for preparing PVC wood plastic composite material, it is characterised in that the plasticization temperature
For 140 ~ 150 DEG C, fusion time is 5 ~ 10min.
8. the method according to claim 5 for preparing PVC wood plastic composite material, it is characterised in that the hot pressing temperature
It is 6 ~ 10Mpa for 160 ~ 180 DEG C, pressure, hot pressing time is 50 ~ 80s.
A kind of 9. PVC wood plastic composite material as claimed in claim 1, it is characterised in that the PVC wood plastic being prepared
Composite material is applied in terms of construction industry, industrialized agriculture, household items, outdoor facilities, means of transportation, logistics transportation.
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| US10836908B2 (en) | 2018-02-01 | 2020-11-17 | Dow Silicones Corporation | Composition, polymer composite article formed therewith, and method of preparing same |
| US11312861B2 (en) | 2019-08-07 | 2022-04-26 | Dow Silicones Corporation | Solid carrier component including a liquid polyorganosiloxane and methods for preparation and use of the solid carrier component |
| US11312862B2 (en) | 2019-08-07 | 2022-04-26 | Dow Silicones Corporation | Solid carrier component including a liquid polydiorganosiloxane and methods for preparation and use of the solid carrier component |
| US11377561B2 (en) | 2019-08-07 | 2022-07-05 | Dow Silicones Corporation | Alkenyl-functional polydiorganosiloxane compositions and methods for use thereof in forming wood plastic composites |
| CN115109352A (en) * | 2022-07-01 | 2022-09-27 | 巢湖市金鸿电缆有限公司 | Tear-resistant cable protective sleeve and preparation method thereof |
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| US10836908B2 (en) | 2018-02-01 | 2020-11-17 | Dow Silicones Corporation | Composition, polymer composite article formed therewith, and method of preparing same |
| US11208557B2 (en) | 2018-02-01 | 2021-12-28 | Dow Silicones Corporation | Composition, polymer composite article formed therewith, and method of preparing same |
| US11884821B2 (en) | 2018-02-01 | 2024-01-30 | Dow Silicones Corporation | Composition, polymer composite article formed therewith, and method of preparing same |
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| US11312862B2 (en) | 2019-08-07 | 2022-04-26 | Dow Silicones Corporation | Solid carrier component including a liquid polydiorganosiloxane and methods for preparation and use of the solid carrier component |
| US11377561B2 (en) | 2019-08-07 | 2022-07-05 | Dow Silicones Corporation | Alkenyl-functional polydiorganosiloxane compositions and methods for use thereof in forming wood plastic composites |
| CN111037774A (en) * | 2019-12-06 | 2020-04-21 | 联塑科技发展(武汉)有限公司 | Mixing control method for preplasticizing plastic powder |
| CN115109352A (en) * | 2022-07-01 | 2022-09-27 | 巢湖市金鸿电缆有限公司 | Tear-resistant cable protective sleeve and preparation method thereof |
| CN115109352B (en) * | 2022-07-01 | 2023-12-01 | 巢湖市金鸿电缆有限公司 | Tear-resistant cable protective sleeve and preparation method thereof |
| CN117343453A (en) * | 2023-11-08 | 2024-01-05 | 湖南同进新材料股份有限公司 | Anti-aging wood-plastic composite material and preparation method thereof |
| CN117343453B (en) * | 2023-11-08 | 2024-07-02 | 湖南同进新材料股份有限公司 | Anti-aging wood-plastic composite material and preparation method thereof |
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