CN101955614A - Novel wood plastic composite decorative building material and manufacturing method thereof - Google Patents

Novel wood plastic composite decorative building material and manufacturing method thereof Download PDF

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CN101955614A
CN101955614A CN2010101115894A CN201010111589A CN101955614A CN 101955614 A CN101955614 A CN 101955614A CN 2010101115894 A CN2010101115894 A CN 2010101115894A CN 201010111589 A CN201010111589 A CN 201010111589A CN 101955614 A CN101955614 A CN 101955614A
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powder
wood
plastic composite
building materials
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CN101955614B (en
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马兴
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CHENGDU AOKINGTH TECHNOLOGY Co Ltd
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CHENGDU AOKINGTH TECHNOLOGY Co Ltd
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Abstract

The invention relates to a novel wood plastic composite decorative building material and a manufacturing method thereof. The novel wood plastic composite decorative building material comprises the following components in part by weight: 100 parts of polyvinyl chloride (PVC) resin powder, 30 parts of mixture formed by mixing one or more of wood powder, bamboo powder, rice bran powder and crop straw powder in an arbitrary ratio, 30 parts of calcium powder, 5 to 10 parts of chlorinated polyethylene or MBS resin, 2 to 6 parts of rear earth compound stabilizer, 0.5 to 3 parts of polyethylene wax or oxidized polyethlene wax, 0.5 to 3 parts of stearic acid, 0.5 to 2.0 parts of foaming agent, 5 to 10 parts of blowing promoter, 0.5 to 1 part of antioxidant, 0.5 to 1 part of reinforcing agent, 1 to 3 parts of toner and 0.5 to 1 part of weather resistant agent. PVC plastic is modified by adding the auxiliaries, and the influence of unstable components (such as a vinyl chloride monomer, hydrogen chloride gas and the like) in the PVC on the performance of the building material is eliminated, so that the building material has better performance and environmental protection characteristics on the basis of keeping the original performance.

Description

A kind of novel wood-plastic composite decoration building materials and manufacture method thereof
Technical field
The present invention relates to a kind of novel wood-plastic composite decoration building materials and manufacture method thereof.
Background technology
Wood plastic composite is to utilize wood powder, bamboo Fen, Bran powder or agricultural crop straw powder and PVC, PE resin to be main raw material, through mixing and forming process and a kind of advanced composite material that makes.It has following characteristics: (1) can process installation as timber, but mopping; (2) durable, the life-span is long, and similar wood appearance is arranged, the hardness height; (3) have excellent physical and mechanical properties, better than wood dimensional stability, can not produce crack and warpage, the joint trace of no timber, twill add tinting material or composite skins and can be made into various products lucuriant in design; (4) moulding easily just can be carried out forming process with general device of plastic processing; (5) be not afraid of insect bite, ageing-resistant, corrosion-resistant, water-absorbent is little, can hygroscopic deformation; (6) reusable and recycling etc.
It is wide that wooden industrial prospect is moulded by China, and China is the country of a timber resources poorness, and forest coverage only is 12.7%, only is equivalent to 61.3% of the average forest coverage in the world.Forest reserves is 10m per capita 2, have only the world per capita accumulation 12.5%.The not enough 0.05m of lumber consumption level per capita 3/ year.For this reason, annual about 1,000 ten thousand m of import that need of China 3Timber.Because long-term irrational development and use, China's area of woods descends just with surprising rapidity, and available timber resources reduces day by day, and situation is very severe.In this case, how fully effectively to utilize limited timber resources, the protection environment is served society, becomes the problem that presses for solution.The second stage employ that is developed as timber and plastics of WPC (wood-plastic products) has been opened up new approach.Mould the substitute of Wood products as timber simultaneously, Application Areas is only infiltrated 4% of following potential market at present, and year usage quantity is about about 5% of view application.Estimate to substitute the application of timber with 50% in following 10 years at aspects such as outdoor view buildings.
The PVC base wood-plastic composite material can be used for following aspect: various profiled materials such as architectural movable dwellings, wall, floor, banister; Industrial foundry pattern, machinery cover, water pump shell, electrical accessorie; Finishing material such as the floor of home office, shingle nail, top ceiling; Various transporting boxes and furniture material etc., Application Areas is very extensive.
Therefore, the production and the application of research and development PVC base wood-plastic composite material, not only will be for the development of the national economy increase a kind of inexpensive novel material that has wide application prospects, and can and improve the wood utilization rate and open up a new way for the harm that reduces the waste or used plastics goods; Conversely, for producing the wood plastic composite source that furnishes ample material, its significance is self-evident again for a large amount of wood chips and waste or used plastics.
The main component of wood powder is a lignocellulose, and a large amount of hydroxy functional groups is contained on the surface, makes its surface show very strong chemical polarity.Because wood powder is a hard particles, cause wood plastic composite in melt temperature current downflow difficulty when filling in a large number simultaneously, processing characteristics obviously descends.And many bibliographical informations are thought, in the research of carrying out the PVC base wood-plastic composite material, the greatest problem that needs to solve is how to make between hydrophilic polarity wood powder surface and the PVC interface to have good consistency, make to reach good fusion between the upper layer of wood powder and the PVC molecule or produce chemically crosslinked, thereby make the PVC base wood-plastic composite material have good physical and mechanical properties.
At present, the producer of domestic production PVC base wood-plastic composite material and bibliographical information almost all adopt the method for coupling agent treatment wood powder, as adopt titanic acid ester, aluminic acid ester, silane coupling agent, to improve combining of wood powder and polyvinyl chloride resin, ignored in the composite material forming course of processing wood powder and problem such as in PVC, disperseed.There is Wood flour filled amount little (being generally less than 50 mass parts) in this method, and wood powder disperses bad in PVC, melt flow difficulty, poor processability, shortcoming such as products appearance is coarse.
Summary of the invention
Technical problem to be solved by this invention provides good, the similar wood grain of a kind of appearance effect, density is little, in light weight, intensity is high, good weatherability, yielding, not cheap novel wood-plastic composite decoration building materials and manufacture method thereof.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of novel wood-plastic composite decoration building materials, and the component and the parts by weight content of described novel wood-plastic composite decoration building materials are: 100 parts in polyvinyl chloride resin powder; 30 parts in the mixture that in wood powder, bamboo Fen, Bran powder, the agricultural crop straw powder one or more constitute with arbitrary proportion; 30 parts of calcium powders; 5~10 parts of chlorinatedpolyethylene or MBS resins; 2~6 parts of rare earth composite stabilizers; 0.5~3 part of polyethylene wax or oxidized polyethlene wax; 0.5~3 part of stearic acid; 0.5~2.0 part of whipping agent; 5~10 parts of frothing aids; 0.5~1 part in oxidation inhibitor; 0.5~1 part of toughener; 1~3 part of toner; 0.5~1 part of weather resisting agent.
Particularly, described frothing aid is the frothing aid of esters of acrylic acid.
The specification of described wood powder, bamboo Fen, Bran powder or agricultural crop straw powder is more than 80 orders.
Described oxidation inhibitor is four (B-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester, claims antioxidant 1010 again; Or, claim antioxidant 1076 again with B-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester.
Described toughener is titanic acid ester or silane coupling agent.
Described whipping agent is a composite foamable agent, and decomposition temperature exists
Figure GSA00000035799400041
Between.
Described toner is made up of background color powder and wood grain master batch, and described background color powder is meant the pigment of base material being dyed the entire body look, and described wood grain master batch is meant the Masterbatch that produces wood grain color and emulation lines on base material.Background color powder and the different matched combined (can mix with arbitrary proportion) of wood grain master batch two portions material process form timber outward appearances such as similar teak, redwood, walnut, and effect is true to nature, gives the sensation of real logs.
A kind of manufacture method of above-mentioned novel wood-plastic composite decoration building materials, comprise the steps: at first each component of novel wood-plastic composite decoration building materials to be formed batching by its parts by weight and under 100 ℃~115 ℃ conditions, mix, batch mixing under 50 ℃~60 ℃ conditions then, drop into tapered twin screw extruder behind the batch mixing and shear plasticizing, the cooling vacuum typing, traction, the scale cutting, packing becomes product.
Described tapered twin screw extruder is the taper counter rotation twin screw extruder.
To sum up, the invention has the beneficial effects as follows:
1, the present invention adds some auxiliary agents such as calcium carbonate-filled dose at the PVC plastics, dibasic Lead Phosphite or organic tin one package stabilizer, chemical foaming agent, the esters of acrylic acid modification agent, sodium stearate or calcium stearate lubricate conditioning agent, methyl methacrylate, silicane Y-aminopropyltriethoxywerene werene, claim the KH-550 tensio-active agent again, polyatomic phenol oxidation inhibitor, promptly four (B-(3,5 di-tert-butyl-hydroxy phenyls) pentaerythritol ester propionic acid), claim antioxidant 1010 again, or suffocated amine antioxidant B-(3,5 di-tert-butyl-hydroxy phenyls) propionic acid stearyl alcohol ester, claim antioxidant 1076 again, the ethylene bis stearic acid amide dispersion agent, stearic acid and lipid derivant thereof, saturated hydrocarbons polyethylene wax surface lubricant, the acid proof stain of titanium dioxide or silicon salt is by adding these auxiliary agents, the PVC plastics are carried out modification, eliminate the labile element among the PVC (vinyl chloride monomer and hydrogen chloride gas etc.) to its Effect on Performance, made product of the present invention on the base that keeps original performance goes out, had more excellent properties and environmental protection characteristic.
2, the product of this environment-friendly composite material goes for places such as education, office building, household, hotel, market, pattern is various, imitative wood grain, color is complete bright-coloured, can reach the effect of mixing the spurious with the genuine, satisfying the high decoration requirement of people to the Nature. its process materials performance is good, water-fast, corrosion-resistant, use comfortable. particularly there is cavernous structure foam material inside, good heat preservation performance, flexibility is good, solved the chill problem of some traditional decoration material. composite foam material sound insulation simultaneously, non-slip.In addition, can realize mass-producing during production, automatization, the production efficiency height, cost is low, easy-maintaining, easy construction.
Embodiment
Embodiment 1:
Doing wood-plastic products with three kinds of different fillers, is respectively wood powder, Bran powder, bamboo powder.And the physicals of testing three kinds of variant productions.Prepare burden by weight, wherein the consumption of polyvinyl chloride resin powder is 100 parts, and the consumption of wood powder, Huo Bran powder or bamboo powder is 30 parts, the consumption of calcium powder is 30 parts, the consumption of chlorinatedpolyethylene is 10 parts, and the consumption of rare earth composite stabilizer is 5.0 parts, and the consumption of polyethylene wax is 1.0 parts, stearic consumption is 3.0 parts, the consumption of whipping agent is 1.0 parts, and the consumption of the frothing aid of esters of acrylic acid is 8 parts, and the consumption of oxidation inhibitor is 0.5 part, the consumption of toner is 1.0 parts, and the consumption of weather resisting agent is 0.5 part.Above-mentioned materials is dropped into the drying that is mixed in the high temperature mixer, drop in the twin screw extruder again and extrude, typing, cutting, the physicals of three kinds of products of last test.As table 1:
Table 1: the physicals that adopts wood powder, Bran powder, the prepared novel wood-plastic composite decoration of bamboo powder building materials
The wood fibre type Proportion (g/cm 3) Tensile strength (MPa) Elongation at break (%) Flexural strength (MPa) Modulus in flexure (MPa) 18 ℃ of (KJ/m of notched Izod impact strength 3) Heat-drawn wire (℃)
Wood powder 0.72 23.85 1.51 36.17 2532.43 5.216 99.30
The Bran powder 0.98 20.35 2.93 34.67 2251.91 4.464 105.00
The bamboo powder 0.85 19.70 2.76 33.36 1828.23 5.204 101.35
Embodiment 2:
Go out product with three kinds of different plastic extruding formings, be respectively high density polyethylene(HDPE) (HDPE), polypropylene (PP), polyvinyl chloride (PVC), and test out the physicals of three kinds of wood-plastic products.Prepare burden by weight, wherein the consumption of PVC or HDPE or PP resin-oatmeal is 100 parts, the consumption of wood powder (more than 80 orders) is 50 parts, the consumption of calcium powder is 30 parts, the consumption of chlorinatedpolyethylene is 10 parts, the consumption of rare earth composite stabilizer is 4.0 parts, the consumption of polyethylene wax is 0.5 part, stearic consumption is 1.0 parts, the consumption of whipping agent is 0.8 part, and the consumption of the frothing aid of esters of acrylic acid is 6 parts, and the consumption of toughener is 1.0 parts, the consumption of toner is 1.2 parts, and the consumption of weather resisting agent is 0.5 part.Above-mentioned materials is dropped into the drying that is mixed in the high temperature mixer, drop in the twin screw extruder again and extrude, typing, cutting, the physicals of three kinds of wood-plastic products of last test.As table 2:
Table 2: the physicals that adopts the prepared novel wood-plastic composite decoration of different plastics building materials
The resin-oatmeal type Proportion (g/cm 3) Tensile strength (MPa) Elongation at break (%) Flexural strength (MPa) Modulus in flexure (MPa) 18 ℃ of (KJ/m of notched Izod impact strength 3) Heat-drawn wire (℃)
HDPE 1.16 20.95 1.36 33.15 2505 4.9 96.7
PP 1.11 16.01 1.90 32.23 2452 3.1 134.6
PVC 0.83 27.80 1.74 52.07 3745 3.3 77.1
The physicals of the novel wood-plastic composite decoration building materials by the foregoing description and preparation as can be known, the present invention adds above-mentioned auxiliary agent at the PVC plastics, the PVC plastics are carried out modification, eliminated the labile element among the PVC (vinyl chloride monomer and hydrogen chloride gas etc.) to its Effect on Performance, make product of the present invention on the basis that keeps original performance, have more excellent properties and environmental protection characteristic, water-fast, corrosion-resistant, use comfortable. particularly there is cavernous structure foam material inside, good heat preservation performance, flexibility is good, has solved the chill problem of some traditional decoration material.The composite foam material sound insulation is non-slip simultaneously.In addition, can realize mass-producing during production, automatization, the production efficiency height, cost is low, easy-maintaining, easy construction.

Claims (9)

1. novel wood-plastic composite decoration building materials is characterized in that, the component and the parts by weight content of described novel wood-plastic composite decoration building materials are: 100 parts in polyvinyl chloride resin powder; 30 parts in the mixture that in wood powder, bamboo Fen, Bran powder, the agricultural crop straw powder one or more constitute with arbitrary proportion; 30 parts of calcium powders; 5~10 parts of chlorinatedpolyethylene or MBS resins; 2~6 parts of rare earth composite stabilizers; 0.5~3 part of polyethylene wax or oxidized polyethlene wax; 0.5~3 part of stearic acid; 0.5~2.0 part of whipping agent; 5~10 parts of frothing aids; 0.5~1 part in oxidation inhibitor; 0.5~1 part of toughener; 1~3 part of toner; 0.5~1 part of weather resisting agent.
2. according to the described a kind of novel wood-plastic composite decoration building materials of claim 1, it is characterized in that described frothing aid is the frothing aid of esters of acrylic acid.
3. according to the described a kind of novel wood-plastic composite decoration building materials of claim 1, it is characterized in that the specification of described wood powder, bamboo Fen, Bran powder or agricultural crop straw powder is more than 80 orders.
4. according to the described a kind of novel wood-plastic composite decoration building materials of claim 1, it is characterized in that described oxidation inhibitor is four (B-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol esters or B-(3,5 di-tert-butyl-hydroxy phenyl) propionic acid stearyl alcohol ester.
5. according to the described a kind of novel wood-plastic composite decoration building materials of claim 1, it is characterized in that described toughener is titanic acid ester or silane coupling agent.
6. according to the described a kind of novel wood-plastic composite decoration building materials of claim 1, it is characterized in that described whipping agent is a composite foamable agent, decomposition temperature is between 110 ℃~190 ℃.
7. according to the described a kind of novel wood-plastic composite decoration building materials of claim 1, it is characterized in that, described toner is made up of background color powder and wood grain master batch, and described background color powder is meant the pigment of base material being dyed the entire body look, and described wood grain master batch is meant the Masterbatch that produces wood grain color and emulation lines on base material.
8.
Figure FSA00000035799300021
Manufacture method, it is characterized in that, comprise the steps: at first each component of novel wood-plastic composite decoration building materials to be formed batching by its parts by weight and under 100 ℃~115 ℃ conditions, mix, batch mixing under 50 ℃~60 ℃ conditions then, drop into tapered twin screw extruder behind the batch mixing and shear plasticizing, cooling vacuum typing, traction, the scale cutting, packing becomes product.
9. the manufacture method of novel wood-plastic composite decoration building materials according to claim 8 is characterized in that, described tapered twin screw extruder is the taper counter rotation twin screw extruder.
CN2010101115894A 2010-02-22 2010-02-22 Novel wood plastic composite decorative building material and manufacturing method thereof Expired - Fee Related CN101955614B (en)

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