CN104877272A - Anti-algae wood-plastic composite material and preparation method thereof - Google Patents
Anti-algae wood-plastic composite material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an anti-algae wood-plastic composite material and a preparation method thereof. The preparation method comprises the following steps: anti-algae active substances are dispersed with anhydrous ethanol, are sprayed onto the surface of wood fiber powder, and are subjected to microwave radiation treatment after being mixed with the wood fiber powder uniformly, so as to obtain a microwave-modified anti-algae active substance-grafted wood fiber powder; the microwave-modified anti-algae active substance-grafted wood fiber powder is mixed with a plastic matrix, activated calcium carbonate, a coupling agent, a lubricant and other processing aids to obtain a mixture; the mixture is granulated and molded to obtain the anti-algae wood-plastic composite material. According to the invention, a plurality of anti-algae active substances are grafted to the surface of the wood fiber powder through microwave radiation modification, so that the wood-plastic composite material has excellent anti-algae property and the mechanical properties are improved. The anti-algae wood-plastic composite material can be applied to outdoor environments near water or in water, such as boardwalks, decking and pavilions besides sea/river/lake/river, and brackets and pillars near water or under water.
Description
Technical field
The invention belongs to wood plastic composite preparation field, be specifically related to a kind of anti-algae wood plastic composite and preparation method thereof.
Background technology
Wood plastic composite is a kind of type material that development in recent years is got up, and is composited by wood fibre, thermoplastics and particular process auxiliary agent, has both timber and plastics advantage concurrently.Wood plastic composite compares timber and plastics have its unique advantage, significant in environment protection, alleviation forest reserves scarcity etc., is widely used in the fields such as indoor and outdoor building, garden landscape, automobile industry, packed and transported, storage at present.
Due to the growth and breeding demand fulfillment sets of conditions of algae, as suitable temperature, humidity (minimum 25%), oxygen, substratum and illumination condition etc., and the moisture content of most of Wood plastic boards and product is all below 2%, well below 25% this threshold limit value.Thus, early stage people generally believe, algae can not on wood plastic composite growth and breeding.But, facts have proved, although wood plastic composite and goods all extremely low in the moisture content of harsh output, but when after mounted use, can the moisture in air be absorbed gradually thus cause the moisture content of material surface constantly to increase, especially when wood plastic composite is mounted for open air, constantly experiencing sunlight exposure/rain drop erosion etc. after the working cycle of renaturation, the humidity of material can increase fast, surface moisture content usually more than 30%, for the growth and breeding of algae provides adapt circumstance.In addition, along with the fast development of wood plastic composite technology, the applied environment of wood plastic composite is more diversified, from environmental development the facing ground, enter ground, enter the multiple environment that may there is algae such as water near water till now on the ground of simple outdoor garden in early days, add wood plastic composite is infected harm probability by algae.Contriver tests the algae resistance of different sorts and the Wood flour filled wood plastic composite of content early stage, result shows, when by wood plastic composite and algae Dual culture, surface of wood-plastic composite material has grown a large amount of frustule and spore, algae covers most of area of material, material surface variable color is serious, affects its outward appearance and aesthetic feeling.Therefore, develop a kind of wood plastic composite with efficient anti-algae performance and will be conducive to reducing algae harm, promote and use aesthetics and wearing quality, expand wood plastic composite range of application, there are good market outlook.
Summary of the invention
First object of the present invention is that the algae occurred in application process for existing wood plastic composite and goods endangers problem and provides the wood plastic composite of a kind of Effective Anti algae.
Anti-algae wood plastic composite of the present invention, it is characterized in that, its raw material is: according to the mass fraction, comprises plastic substrate 100 parts, wood fiber powder 40-150 part through the anti-algae active substance of microwave modification grafting, activated Calcium carbonate 6-30 part, lubricant 2-5 part, coupling agent 2-6 part and other processing aid 2-15 part;
The described wood fiber powder through microwave modification grafting anti-algae active substance is prepared by the following method: be sprayed onto wood fiber powder surface by after anti-algae active substance dehydrated alcohol dispersion, after being uniformly mixed, obtain the wood fiber powder through the anti-algae active substance of microwave modification grafting by microwave radiation processing.
The described wood fiber powder through microwave modification grafting anti-algae active substance is prepared preferably through following methods: be sprayed onto wood fiber powder surface by after the anti-algae active substance dehydrated alcohol dispersion of the 0.5-3% of wood fiber powder quality, after being uniformly mixed, with the microwave radiation processing 0.5-2min of 5-20kW power, obtain the wood fiber powder through the anti-algae active substance of microwave modification grafting.
Described anti-algae active substance is Zinc Pyrithione (ZPT), derosal (MBC), Top Form Wormer (TBZ), N-octyl-isothiazolinone (OIT), 4, the chloro-N-octyl group of 5-bis--4-isothiazoline-3-ketone (DCOIT), 1,2-benzisothiazole-3-ketone (BIT), n-butyl-1,2-isothiazoline-3-ketone (BBIT), N-(3,4-dichlorophenyl)-N, N-dimethyl urea (Diuron Tech) and 10, one or more the mixture in the two phenoxazine arsenic (OBPA) of 10 '-oxo.
Described wood fiber powder is wood powder, bamboo powder, flax powder, castor meal, straw powder, bagasse and/or rice chaff, and particle diameter is 40-160 order.
Described plastic substrate is one or more compositions in PP, HDPE, PVC and PS, can be virgin material or reclaimed materials.
Described lubricant is one or more the composition in stearic acid, PE wax and paraffin.
Described coupling agent is one or more the composition in two aminosilane, vinyl silanes, methacryloxypropyl silane and maleic anhydride inoculated polypropylene.
Other described processing aid is one or more compositions in photostabilizer, thermo-stabilizer, toner and softening agent.
Second object of the present invention is to provide a kind of preparation method of anti-algae wood plastic composite.
The preparation method of anti-algae wood plastic composite of the present invention, it is characterized in that, comprise the following steps: by each raw materials quality portion rate of above-mentioned anti-algae wood plastic composite, plastic substrate and the wood fiber powder through the anti-algae active substance of microwave modification grafting are added in high-speed mixer, in 90-110 DEG C, after 600-1000r/min high-speed mixing 10-15min, add activated Calcium carbonate, coupling agent, lubricant and other processing aids, after continuing mixing 10-15min, cooling discharging obtains Preblend; Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
The invention has the beneficial effects as follows: the anti-algae performance of (1) high-efficient and lasting: by microwave radiation modification that there is the anti-algae agent of anti-algae activity on wood fibre surface grafting.Microwave radiation can make the xylogen on wood fibre surface and cellulose macromolecule be activated, thus make wood fibre more easily anti-algae active substance in grafting, and by formation of chemical bond rock steady structure, give the anti-algae performance of wood plastic composite high-efficient and lasting, reduce algae in problems such as the growth and breeding of material surface and the material variable colors that causes thereupon, be conducive to the lifting of wood plastic composite over-all properties and the expansion of Application Areas; Make wood plastic composite and goods can be applied to open air or enter water surrounding near water, as sea/river/lake/river bank plank road, bed board, lobby, or under water support, column etc. near water.(2) good interface performance and mechanical property: by microwave modification at the anti-algae active substance of wood fibre surface grafting, not only increase the anti-algae performance of wood plastic composite, also effectively can improve the interface binding power between both wood fibre and plastics, improve the mechanical property of material.On the one hand, microwave radiation reduces the surface hydrophilicity of wood fibre, is conducive to the compound of wood fibre and macromolecule matrix, adds the interface binding power between both wood fibre and plastic substrate; On the other hand, microwave modification adds the roughness of fiber surface, and improve plastic substrate in the infiltration of fibrous inside and sticky effect, the interfacial effect of matrix material is weakened, mechanical property strengthens.
Embodiment
Below provide embodiment to be specifically described the present invention; it is important to point out; this enforcement example is only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that this field skilled person makes according to content of the present invention and adjustment still belong to protection scope of the present invention.
Embodiment 1
The surface modification grafting of wood fiber powder (wood powder): will with the finely dispersed Zinc Pyrithione of dehydrated alcohol (ZPT) spray solution to 80 order wood powder surfaces, Zinc Pyrithione consumption is 1.0% of wood powder quality, after stirring, with the microwave radiation processing 2min of 5kW power, obtain the wood powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take PP matrix 100 parts, wood powder 100 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 100 DEG C, under the condition of 700r/min after high-speed stirring mixing 10min, add activated Calcium carbonate 15 parts, stearic acid 2 parts, two amino silicane coupling agent 2 parts, photostabilizer 4 parts, toner 2 parts, after continuing mixing 10min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 2
The surface modification grafting of wood fiber powder (bamboo powder): will with the finely dispersed derosal of dehydrated alcohol (MBC) spray solution to 40 order bamboo powder surfaces, derosal consumption is 1.5% of bamboo opaque amount, after stirring, with the microwave radiation processing 1.5min of 10kW power, obtain the bamboo powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take HDPE matrix 100 parts, 80 parts, the bamboo powder through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 90 DEG C, under the condition of 800r/min after high-speed stirring mixing 10min, add activated Calcium carbonate 10 parts, 5 parts, PE wax, maleic anhydride inoculated polypropylene 4 parts, photostabilizer 2 parts, toner 2 parts, after continuing mixing 12min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 3
The surface modification grafting of wood fiber powder (flax powder): will with the finely dispersed Top Form Wormer of dehydrated alcohol (TBZ) spray solution to 60 order flax powder surfaces, Top Form Wormer consumption is 2.0% of flax opaque amount, after stirring, with the microwave radiation processing 1min of 15kW power, obtain flax powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take HDPE matrix 100 parts, 60 parts, flax powder through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 110 DEG C, under the condition of 600r/min after high-speed stirring mixing 15min, add activated Calcium carbonate 20 parts, 5 parts, PE wax, vinyl silicane coupling agent 5 parts, photostabilizer 3 parts, toner 3 parts, after continuing mixing 10min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 4
The surface modification grafting of wood fiber powder (castor meal): will with dehydrated alcohol finely dispersed N-octyl-isothiazolinone (OIT) spray solution to 80 order castor meal surfaces, N-octyl-isothiazolinone consumption is 2.5% of castor meal quality, after stirring, with the microwave radiation processing 1min of 20kW power, obtain the castor meal through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take PVC matrix 100 parts, the castor meal 100 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 110 DEG C, under the condition of 800r/min after high-speed stirring mixing 12min, add activated Calcium carbonate 15 parts, 3 parts, paraffin, vinyl silicane coupling agent 6 parts, photostabilizer 3 parts, toner 3 parts, thermo-stabilizer 5 parts, after continuing mixing 15min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 5
The surface modification grafting of wood fiber powder (straw powder): will with dehydrated alcohol finely dispersed 4, the chloro-N-octyl group of 5-bis--4-isothiazoline-3-ketone (DCOIT) spray solution is to 60 order straw powder surfaces, 4, the chloro-N-octyl group of 5-bis--4-isothiazoline-3-ketone consumption is 1.5% of straw powder quality, after stirring, with the microwave radiation processing 2min of 10kW power, obtain the straw powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, takes PVC matrix 100 parts, and the straw powder 80 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 100 DEG C, under the condition of 1000r/min after high-speed stirring mixing 10min, add activated Calcium carbonate 30 parts, 2 parts, PE wax, 2 parts, paraffin, two amino silicane coupling agent 6 parts, photostabilizer 4 parts, toner 2 parts, thermo-stabilizer 4 parts, after continuing mixing 15min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 6
The surface modification grafting of wood fiber powder (bagasse): will with dehydrated alcohol finely dispersed 1,2-benzisothiazole-3-ketone (BIT) spray solution is to 160 order bagasse surfaces, 1,2-benzisothiazole-3-ketone consumption is 3.0% of bagasse quality, after stirring, with the microwave radiation processing 0.5min of 20kW power, obtain the bagasse through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, takes PS matrix 100 parts, and the bagasse 40 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 90 DEG C, under the condition of 800r/min after high-speed stirring mixing 15min, add activated Calcium carbonate 20 parts, 2 parts, PE wax, 1 part, paraffin, methacryloxypropyl silane coupling agent 5 parts, photostabilizer 3 parts, toner 3 parts, thermo-stabilizer 5 parts, 4 parts, softening agent, after continuing mixing 15min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 7
The surface modification grafting of wood fiber powder (rice chaff): will with the finely dispersed n-butyl-1 of dehydrated alcohol, 2-isothiazoline-3-ketone (BBIT) spray solution is to 120 order rice chaff surfaces, n-butyl-1,2-isothiazoline-3-ketone consumption is 1.0% of rice chaff quality, after stirring, with the microwave radiation processing 2min of 5kW power, obtain the rice chaff through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, takes PS matrix 100 parts, and the rice chaff 100 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 100 DEG C, under the condition of 600r/min after high-speed stirring mixing 15min, add activated Calcium carbonate 25 parts, 5 parts, PE wax, two amino silicane coupling agent 2 parts, photostabilizer 3 parts, toner 3 parts, thermo-stabilizer 3 parts, 4 parts, softening agent, after continuing mixing 15min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 8
The surface modification grafting of wood fiber powder (wood powder): will with the finely dispersed N-(3 of dehydrated alcohol, 4-dichlorophenyl)-N, N-dimethyl urea (Diuron Tech) spray solution is to 160 order wood powder surfaces, N-(3,4-dichlorophenyl)-N, N-dimethyl urea consumption is 0.5% of wood powder quality, after stirring, with the microwave radiation processing 1.5min of 15kW power, obtain the wood powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take PP matrix 100 parts, the wood powder 150 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 90 DEG C, under the condition of 850r/min after high-speed stirring mixing 10min, add activated Calcium carbonate 6 parts, stearic acid 3 parts, 2 parts, PE wax, vinyl silicane coupling agent 6 parts, photostabilizer 1 part, toner 1 part, after continuing mixing 15min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 9
The surface modification grafting of wood fiber powder (bamboo powder): will with dehydrated alcohol finely dispersed 10, two phenoxazine arsenic (OBPA) spray solution of 10 '-oxo is to 120 order bamboo powder surfaces, 10, the two phenoxazine arsenic consumption of 10 '-oxo is 2.0% of bamboo opaque amount, after stirring, with the microwave radiation processing 1.0min of 10kW power, obtain the bamboo powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take PP matrix 100 parts, 60 parts, the bamboo powder through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 110 DEG C, under the condition of 900r/min after high-speed stirring mixing 12min, add activated Calcium carbonate 10 parts, stearic acid 1 part, 1 part, PE wax, maleic anhydride inoculated polypropylene 4 parts, photostabilizer 3 parts, toner 2 parts, after continuing mixing 10min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
Embodiment 10
The surface modification grafting of wood fiber powder (wood powder): will with dehydrated alcohol finely dispersed 4, the chloro-N-octyl group of 5-bis--4-isothiazoline-3-ketone spray solution is to 80 order wood powder surfaces, 4, the chloro-N-octyl group of 5-bis--4-isothiazoline-3-ketone (DCOIT) consumption is 1.0% of wood powder quality, after stirring, with the microwave radiation processing 2.0min of 10kW power, obtain the wood powder through the anti-algae active substance of microwave modification grafting.
The preparation of anti-algae wood plastic composite: by ratio of quality and the number of copies, take HDPE matrix 100 parts, wood powder 120 parts through the anti-algae active substance of microwave modification grafting joins in high-speed mixer, in 110 DEG C, under the condition of 600r/min after high-speed stirring mixing 10min, add activated Calcium carbonate 12 parts, stearic acid 3 parts, maleic anhydride inoculated polypropylene 2 parts, photostabilizer 4 parts, toner 2 parts, after continuing mixing 15min, cooling discharging obtains Preblend.Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
The present invention with the wood plastic composite prepared by the wood fiber powder without the anti-algae active substance of microwave modification grafting for comparative example.
Comparative example 1
With without the anti-algae active substance of microwave modification grafting wood powder for fill wood fibre, all the other formula constituents and processing molding method identical with embodiment 1, prepare comparative example 1.
Comparative example 2
With without the anti-algae active substance of microwave modification grafting bamboo powder for fill wood fibre, all the other formula constituents and processing molding method identical with embodiment 2, prepare comparative example 2.
The present invention's anti-algae performance used testing method is as follows:
Anti-algae performance tests algae kind used: chlorella (Chlorella vulgaris), silk algae (Ulothrix sp), Scenedesmus quadricauda (Scenedesmus quadricauda) and the algae that quivers (Oscillatoria sp).
Anti-algae performance testing method: inoculate chlorella, silk algae, Scenedesmus quadricauda respectively and quiver algae in algae liquid nutrient medium, in 25 ± 2 DEG C, 1000 ~ 3000lx, RH>=80% illumination box in cultivate 10-14d, algae seedling solution concentration is adjusted to 1 × 10
6-9 × 10
6after cfu/mL, equal-volume mixes four kinds of algae seedling solutions and obtains mixing algae seedling solution.Algae solid medium is melted and pours in sterile petri dish after being cooled to 45-50 DEG C, for subsequent use after room temperature cooled and solidified.Wood after sterilising treatment is moulded the blank sample of sample and standard and put into the algae solid medium solidified gently, then with chromatography atomizer, mixing algae seedling solution is evenly sprayed onto sample surfaces, inoculation liquid need be uniformly distributed in the whole surface of sample.Postvaccinal sample is put into 25 ± 2 DEG C, 1000 ~ 3000lx, RH >=80%, light application time be every day the fixed temperature and humidity illumination box of 14h cultivate 21d.When 7d checks, in culture dish, media surface obviously should observe algal grown (having green culture), otherwise invalidate the test.In process of the test, keep sample surfaces moistening, and record the growing state of algae in sample and culture dish.After off-test, observe specimen surface algal grown situation, and pass judgment on reference to the anti-algae performance of table 1 pair sample.
Table 1 specimen surface algal grown ranking table
The tensile strength that sample moulded by wood is measured with reference to standard GB/T/T 1040-2006.
The simple beam impact strength that sample moulded by wood is measured with reference to standard GB/T/T 1043-1993.
The flexural strength that sample moulded by wood is measured with reference to standard GB/T/T 9341-2008.
The anti-algae performance of described embodiment 1-10 and comparative example 1-2, tensile strength, shock strength and flexural strength test result are in table 2.
The anti-algae performance of each embodiment of table 2 and comparative example wood plastic composite and stretching, impact and bending property test result
| Sample moulded by wood | Anti-algae grade | Tensile strength (Mpa) | Shock strength (KJ/m 2) | Flexural strength (Mpa) |
| Embodiment 1 | 0 | 27.5 | 10.2 | 36.2 |
| Embodiment 2 | 1 | 23.6 | 9.6 | 35.5 |
| Embodiment 3 | 1 | 22.5 | 8.8 | 38.2 |
| Embodiment 4 | 1 | 21.0 | 8.5 | 32.6 |
| Embodiment 5 | 1 | 19.3 | 9.4 | 38.2 |
| Embodiment 6 | 1 | 26.6 | 10.8 | 40.5 |
| Embodiment 7 | 1 | 22.6 | 8.5 | 35.8 |
| Embodiment 8 | 0 | 24.3 | 9.9 | 32.7 |
| Embodiment 9 | 1 | 21.2 | 10.4 | 35.8 |
| Embodiment 10 | 1 | 23.5 | 10.3 | 32.2 |
| Comparative example 1 | 3 | 18.5 | 7.2 | 29.3 |
| Comparative example 2 | 4 | 16.1 | 6.8 | 28.5 |
As can be seen from Table 2, utilize the anti-algae wood plastic composite that the wood fiber powder through the anti-algae active substance of microwave modification grafting prepares as filling wood fibre, its anti-algae performance is significantly better than the wood plastic composite prepared as filling wood fibre without the wood fiber powder of the anti-algae active substance of microwave modification grafting, and the former also has better tensile strength, shock strength and flexural strength.Show, anti-algae wood plastic composite also enhances its mechanical property while significantly improving anti-algae property.
Claims (9)
1. an anti-algae wood plastic composite, it is characterized in that, its raw material is: according to the mass fraction, comprises plastic substrate 100 parts, wood fiber powder 40-150 part through the anti-algae active substance of microwave modification grafting, activated Calcium carbonate 6-30 part, lubricant 2-5 part, coupling agent 2-6 part and other processing aid 2-15 part;
The described wood fiber powder through microwave modification grafting anti-algae active substance is prepared by the following method: be sprayed onto wood fiber powder surface by after anti-algae active substance dehydrated alcohol dispersion, after being uniformly mixed, obtain the wood fiber powder through the anti-algae active substance of microwave modification grafting by microwave radiation processing.
2. anti-algae wood plastic composite according to claim 1, it is characterized in that, the described wood fiber powder through microwave modification grafting anti-algae active substance is prepared by the following method: be sprayed onto wood fiber powder surface by after the anti-algae active substance dehydrated alcohol dispersion of the 0.5-3% of wood fiber powder quality, after being uniformly mixed, with the microwave radiation processing 0.5-2min of 5-20kW power, obtain the wood fiber powder through the anti-algae active substance of microwave modification grafting.
3. anti-algae wood plastic composite according to claim 1, it is characterized in that, described anti-algae active substance is Zinc Pyrithione, derosal, Top Form Wormer, N-octyl-isothiazolinone, 4, the chloro-N-octyl group of 5-bis--4-isothiazoline-3-ketone, 1,2-benzisothiazole-3-ketone, n-butyl-1,2-isothiazoline-3-ketone, N-(3,4-dichlorophenyl)-N, N-dimethyl urea and 10, one or more the mixture in the two phenoxazine arsenic of 10 '-oxo.
4. anti-algae wood plastic composite according to claim 1, is characterized in that, described wood fiber powder is wood powder, bamboo powder, flax powder, castor meal, straw powder, bagasse and/or rice chaff, and particle diameter is 40-160 order.
5. anti-algae wood plastic composite according to claim 1, is characterized in that, described plastic substrate is one or more compositions in PP, HDPE, PVC and PS.
6. anti-algae wood plastic composite according to claim 1, is characterized in that, described lubricant is one or more the composition in stearic acid, PE wax and paraffin.
7. anti-algae wood plastic composite according to claim 1, is characterized in that, described coupling agent is one or more the composition in two aminosilane, vinyl silanes, methacryloxypropyl silane and maleic anhydride inoculated polypropylene.
8. anti-algae wood plastic composite according to claim 1, is characterized in that, other described processing aid is one or more compositions in photostabilizer, thermo-stabilizer, toner and softening agent.
9. the preparation method of an anti-algae wood plastic composite according to claim 1, it is characterized in that, comprise the following steps: by each raw materials quality portion rate of anti-algae wood plastic composite according to claim 1, plastic substrate and the wood fiber powder through the anti-algae active substance of microwave modification grafting are added in high-speed mixer, in 90-110 DEG C, after 600-1000r/min high-speed mixing 10-15min, add activated Calcium carbonate, coupling agent, lubricant and other processing aids, after continuing mixing 10-15min, cooling discharging obtains Preblend; Preblend is put in dual-screw-stem machine and carry out granulation, to extrude and shaping, obtain anti-algae wood plastic composite.
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