CN105237910A - PVC wood-plastic foaming base material and preparation method thereof - Google Patents
PVC wood-plastic foaming base material and preparation method thereof Download PDFInfo
- Publication number
- CN105237910A CN105237910A CN201510702278.8A CN201510702278A CN105237910A CN 105237910 A CN105237910 A CN 105237910A CN 201510702278 A CN201510702278 A CN 201510702278A CN 105237910 A CN105237910 A CN 105237910A
- Authority
- CN
- China
- Prior art keywords
- parts
- pvc
- wood plastic
- plastic foamed
- foamed substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a PVC wood-plastic foaming base material and a preparation method thereof. The wood-plastic foaming base material is prepared from PVC, circulating fluidized bed combustion( CFBC) ash, wood powder, a stabilizing agent, a lubricant, a foaming agent and other raw materials. A taper twin-screw three-layer co-extrusion technology is employed, concretely, dry blends respectively for a peel layer and a core layer are respectively sent into a peel-layer extruder and a core-layer extruder for fusion extrusion, and foaming molding is performed in a sheet-material die, and thus the PVC wood-plastic foaming base material is obtained. The PVC wood-plastic foaming base material prepared by employing the method possesses the advantages of being light in weight, high in strength, waterproof, anticorrosion and warm-keeping, also possesses the nailable, sawable and planable characteristics of wood, and is widely applicable to fields of buildings, transportation, packaging and household decoration.
Description
Technical field
The invention belongs to Wood-plastic material technical field, be specifically related to a kind of PVC wood plastic base material and preparation method thereof.
Background technology
Wood plastic composite (Wood-PlasticComposites, WPC) be the class advanced composite material be in recent years surging forward both at home and abroad, refer to utilize polyethylene, polypropylene and polyvinyl chloride etc., replace common resin adhesive, new wood materials is mixed into useless vegetable fibres such as the wood powder more than more than 50%, rice husk, stalks, again through plastic processings such as extruding, mold pressing, injection moldings, the novel environment friendly sheet material produced, is mainly used in the industries such as building materials, furniture, logistics packaging.
China is an oil-poor rich coal country, and populous, in fast development process, demand for energy is large, and wherein thermal power generation accounts for more than 70%, and annual solid sulfur ash, fluidized bed combustion coal ash/slag quantity discharged have reached about 1.5 hundreds of millions tons.
At present, solid sulfur ash comprehensive utilization direction is narrow, and solid sulfur ash recycling amount is far below the quantity discharged of solid sulfur ash, and the solid sulfur ash be not secondary use in a large number is stacked, and not only land resources occupancy is large, and harm ecotope, therefore, needs badly its disposal of resources.
High calcium solid sulfur ash (CAFs) is in desulphurization in circulating fluidized bed boiler production process, a kind of solid dust of generation.Desulphurization in circulating fluidized bed boiler is in coal dust, add a certain proportion of calcium carbonate, at 850 DEG C ~ 900 DEG C in combustion processes, sulphur in coal dust is oxidized rear and calcium carbonate reaction, generate calcium sulfite and calcium sulphate solid particle, and excess calcium carbonate is decomposed into calcium oxide particle, institute's calcic in the dust collected by smoke duster, sulphur are all high than ordinary fly ash, are therefore called high calcium solid sulfur ash, by the coarse particles that dreg removing system discharges, be called CFB residues.
The comprehensive utilization of high calcium solid sulfur ash, still lack proven technique at present, the research that solid sulfur ash fully utilizes as raw material of building materials by many investigator's common concerns, main application direction has concrete admixture, cement admixture and swelling agent etc., as Chinese patent CN104326722A, CN103011367A, CN102850012A, CN103979894A, CN103253900A and CN103936456A.But these researchs also exist limitation, increasing solid sulfur ash bulk deposition problem can not be met far away to the utilization ratio of solid sulfur ash,
summary of the invention:
The object of the invention is to provide one to utilize solid waste solid sulfur ash to prepare PVC wood plastic foamed substrate and preparation method thereof as filler.
For achieving the above object, the invention provides a kind of PVC wood plastic foamed substrate, described PVC wood plastic foamed substrate is made up of the raw material of following parts by weight:
PVC-SG5:100 part; 800 ~ 1500 order solid sulfur ashes: 1 ~ 70 part; Wood powder: 5 ~ 35 parts; Stablizer: 3 ~ 6 parts; ACR processing aid 0.8 ~ 1.8 part; 0.4 ~ 1.5 part, PE wax; Plasticized modifier: 3 ~ 17 parts; Internal lubricant: 0.1 ~ 1 part; High temperature lubricant: 0.1 ~ 1 part; High-temperature foaming agent: 0.3 ~ 0.7 part; Production of low-temperature foaming agent: 0.3 ~ 0.7 part; Foaming control agent: 4 ~ 8 parts.
Wherein, described wood powder is selected from 80-100 order, and moisture content is less than or equal to the wood powder of 5%;
Described stablizer is selected from the one in lead salt stabilizer, the multi-functional thermo-stabilizer of rare earth calcium zinc;
Described ACR processing aid is selected from acrylic polymer;
Described plasticized modifier is CPE(chlorinatedpolyethylene), MBS(MBS), NBR(Butadiene and Acrylonitrile copolymer) or EVA(ethene-acetate ethylene copolymer) in one;
Described internal lubricant is the one in calcium stearate, oxystearic acid, glyceryl monostearate, stearyl alcohol, ester type waxes, saponified wax;
Described high temperature lubricant is the one in tetramethylolmethane or oxidized polyethlene wax;
Described high-temperature foaming agent is Cellmic C 121, and production of low-temperature foaming agent is sodium bicarbonate, and described foaming control agent is CALCIUM ACRYLATE base polymer.
A preparation method for PVC wood plastic foamed substrate, comprises the following steps:
(1) stand-by after the solid sulfur ash after classification being dried to weight at 120 DEG C;
(2) PVC-SG5 resin 100 parts, solid sulfur ash 1 ~ 35 part, wood powder 5 ~ 20 parts, stablizer 3 ~ 6 parts, ACR processing aid 0.8 ~ 1.6 part, plasticized modifier 8 ~ 17 parts, 0.7 ~ 1.5 part, PE wax, internal lubricant 0.6 ~ 1 part and high temperature lubricant 0.6 ~ 1 part are got the raw materials ready by formula metering, high speed mixer is sent into by vacuum conveying system, after temperature reaches 120 DEG C, be discharged to low speed mixer be cooled to 50-60 DEG C, obtain cortex dry blend;
(3) PVC-SG5 resin 100 parts, solid sulfur ash 30 ~ 70 parts, wood powder 10 ~ 30 parts, stablizer 3 ~ 6 parts, ACR processing aid 0.9 ~ 1.8 part, plasticized modifier 3 ~ 9 parts, 0.4 ~ 1 part, PE wax, high-temperature foaming agent 0.3 ~ 0.7 part, production of low-temperature foaming agent 0.3 ~ 0.7 part, foaming control agent 4 ~ 8 parts, internal lubricant 0.1 ~ 0.5 part and high temperature lubricant 0.1 ~ 1 part are got the raw materials ready by formula metering, high speed mixer is sent into by vacuum conveying system, after temperature reaches 120 DEG C, be discharged to low speed mixer be cooled to 50-60 DEG C, obtain sandwich layer dry blend;
(4) adopt conical double-screw three-layer co-extruded technology the above-mentioned cortex prepared and sandwich layer dry blend to be sent into respectively after cortex forcing machine and sandwich layer forcing machine carry out melting to extrude, cortex and sandwich layer extruder barrel temperature are 155 ~ 185 DEG C, die head temperature is 165 ~ 180 DEG C, screw speed is 10.7 ~ 18.8r/min, is namely able to PVC wood plastic foamed substrate through board mould is shaping.
beneficial effect
The present invention will utilize solid sulfur ash as filler, a kind of preparation PVC wood plastic foamed substrate composition and engineering is newly provided, realizes the comprehensive utilization of solid sulfur ash, turn waste into wealth, reduce the cost of PVC wood plastic foam composite material simultaneously, improve the market competitiveness of PVC wood plastic foamed board.Because in high calcium solid sulfur ash, CaO content is higher, effectively can promote the plasticizing of dry blend in the course of processing, make dry blend be beneficial to processing.The PVC wood plastic foamed substrate prepared for filler with high calcium solid sulfur ash provided by the present invention, have that light weight, intensity are high, waterproof, anticorrosion, insulation advantage, and there is the processing characteristic that timber can be followed closely, can saw, can dig, building, transport, packaging and home decoration field can be widely used in.
accompanying drawing illustrates:
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in detail.
embodiment 1:
Of the present invention with high calcium solid sulfur ash for the preparation technology of PVC wood plastic foamed substrate prepared by filler, embodiment comprises the steps:
(1) solid sulfur ash 800 order (composition analysis is in table 1) after classification is inserted baking oven, at 120 DEG C, be dried to weight.
(2) formula table is in table 2, by table 2 mediopellis formula by PVC-SG5, solid sulfur ash, wood powder, lead stearate (stablizer), ACR processing aid, CPE(plasticized modifier), PE wax, calcium stearate (internal lubricant) and oxidized polyethlene wax (high temperature lubricant) send into high speed mixer by vacuum conveying system, after temperature reaches 120 DEG C, be discharged to low speed mixer be cooled to 60 DEG C, obtain cortex and extrude and use dry blend.
(3) formula table is in table 2, by table 2 center core layer formula by PVC-SG5, solid sulfur ash, wood powder, lead stearate (stablizer), ACR processing aid, CPE(plasticized modifier), PE wax, Cellmic C 121 (high-temperature foaming agent), sodium bicarbonate (production of low-temperature foaming agent), CALCIUM ACRYLATE base polymer (foaming control agent), calcium stearate (internal lubricant) and oxidized polyethlene wax (high temperature lubricant) send into high speed mixer by vacuum conveying system, after temperature reaches 120 DEG C, be discharged to low speed mixer be cooled to 60 DEG C, obtain sandwich layer and extrude and use dry blend.
(4) three-layer co-extruded technique is adopted by cortex conical double-screw machine, sandwich layer dual-screw-stem machine, mold heated to technique initialization temperature, after mixed cortex dry blend and sandwich layer dry blend being sent into respectively cortex forcing machine and sandwich layer forcing machine hopper, start cortex screw extrusion press and the extrusion moulding of sandwich layer screw extrusion press, concrete working process parameter, in table 3, is namely able to the PVC wood plastic foamed substrate product that high calcium solid sulfur ash is filler.
Embodiment 1 Product checking the results are shown in Table 4.
Table 1, high calcium solid sulfur ash main component table
| Project | SO 3 | CaO | SiO 2 | F 2O 3 | Al 2O 3 | MgO | Cl - | K 2O | Na 2O | Other |
| Content (wt%) | 10.67 | 23.15 | 32.38 | 5.75 | 16.87 | 1.82 | 0.009 | 0.09 | 0.23 | 9.121 |
Table 2, PVC wood plastic foamed substrate formula (part) being filler with 800 height of eye calcium solid sulfur ashes
Table 3, the PVC wood plastic foamed substrate formula complete processing being filler with 800 height of eye calcium solid sulfur ashes
Table 4, the PVC wood plastic foamed substrate formulation product performance being filler with 800 height of eye calcium solid sulfur ashes
embodiment 2:
Operation is with embodiment 1, and formula is in table 5, and its Product checking the results are shown in Table 6.
Table 5, PVC wood plastic foamed substrate formula (part) being filler with 1000 height of eye calcium solid sulfur ashes
Table 6, the PVC wood plastic foamed substrate formulation product performance being filler with 1000 height of eye calcium solid sulfur ashes
embodiment 3:
Operation, with embodiment 1, uses solid sulfur ash to be 1250 orders, and formula is in table 7.Its Product checking the results are shown in Table 8.
Table 7, PVC wood plastic foamed substrate formula (part) being filler with 1250 height of eye calcium solid sulfur ashes
Table 8, the PVC wood plastic foamed substrate formulation product performance being filler with 1250 height of eye calcium solid sulfur ashes
Finally need explanation; above embodiment is only unrestricted for illustration of technical scheme of the present invention; although be described in detail technical scheme of the present invention with reference to preferred embodiment; those skilled in the art are to be understood that; can modify to technical scheme of the present invention or equivalent replacement; and not departing from the purpose and scope of the invention, it all should be encompassed in the middle of protection scope of the present invention.
Claims (10)
1. a PVC wood plastic foamed substrate, is characterized in that, described PVC wood plastic foamed substrate is made up of the raw material of following parts by weight:
PVC-SG5:100 part; 800 ~ 1500 order solid sulfur ashes: 1 ~ 70 part; Wood powder: 5 ~ 35 parts; Stablizer: 3 ~ 6 parts; ACR processing aid: 0.8 ~ 1.8 part; PE wax: 0.4 ~ 1.5 part; Plasticized modifier: 3 ~ 17 parts; Internal lubricant: 0.1 ~ 1 part; High temperature lubricant: 0.1 ~ 1 part; High-temperature foaming agent: 0.3 ~ 0.7 part; Production of low-temperature foaming agent: 0.3 ~ 0.7 part; Foaming control agent: 4 ~ 8 parts.
2. a kind of PVC wood plastic foamed substrate according to claim 1, is characterized in that, described wood powder is selected from 80 ~ 100 orders, and moisture content is less than or equal to the wood powder of 5%.
3. a kind of PVC wood plastic foamed substrate according to claim 1, is characterized in that, described stablizer is selected from the one in lead salt stabilizer, the multi-functional thermo-stabilizer of rare earth calcium zinc.
4. a kind of PVC wood plastic foamed substrate according to claim 1, is characterized in that, described ACR processing aid is selected from acrylic polymer.
5. a kind of PVC wood plastic foamed substrate according to claim 1, it is characterized in that, described plasticized modifier is CPE(chlorinatedpolyethylene), MBS(MBS), NBR(Butadiene and Acrylonitrile copolymer) or EVA(ethene-acetate ethylene copolymer) in one.
6. a kind of PVC wood plastic foamed substrate according to claim 1, it is characterized in that, described internal lubricant is selected from the one in calcium stearate, oxystearic acid, glyceryl monostearate, stearyl alcohol, ester type waxes, saponified wax.
7. a kind of PVC wood plastic foamed substrate according to claim 1, it is characterized in that, described high temperature lubricant is selected from the one in tetramethylolmethane, oxidized polyethlene wax.
8. a kind of PVC wood plastic foamed substrate according to claim 1, is characterized in that, described high-temperature foaming agent is Cellmic C 121; Production of low-temperature foaming agent is sodium bicarbonate.
9. a kind of PVC wood plastic foamed substrate according to claim 1, is characterized in that, described foaming control agent is CALCIUM ACRYLATE base polymer.
10. a preparation method for PVC wood plastic foamed substrate, is characterized in that, comprises the following steps:
(1) stand-by after the solid sulfur ash after classification being dried to weight at 120 DEG C;
(2) PVC-SG5 resin 100 parts, 800 order solid sulfur ash 1 ~ 35 part, wood powder 5 ~ 20 parts, stablizer 3 ~ 6 parts, ACR processing aid 0.8 ~ 1.6 part, plasticized modifier 8 ~ 17 parts, 0.7 ~ 1.5 part, PE wax, internal lubricant 0.6 ~ 1 part and high temperature lubricant 0.6 ~ 1 part are got the raw materials ready by formula metering, high speed mixer is sent into by vacuum conveying system, after temperature reaches 120 DEG C, be discharged to low speed mixer be cooled to 50-60 DEG C, obtain cortex dry blend;
(3) PVC-SG5 resin 100 parts, 800 order solid sulfur ash 30 ~ 70 parts, wood powder 10 ~ 30 parts, stablizer 3 ~ 6 parts, ACR processing aid 0.9 ~ 1.8 part, plasticized modifier 3 ~ 9 parts, 0.4 ~ 1 part, PE wax, high-temperature foaming agent 0.3 ~ 0.7 part, production of low-temperature foaming agent 0.3 ~ 0.7 part, foaming control agent 4 ~ 8 parts, internal lubricant 0.1 ~ 0.5 part and high temperature lubricant 0.1 ~ 1 part are got the raw materials ready by formula metering, high speed mixer is sent into by vacuum conveying system, after temperature reaches 120 DEG C, be discharged to low speed mixer be cooled to 50-60 DEG C, obtain sandwich layer dry blend;
(4) adopt conical double-screw three-layer co-extruded technology the above-mentioned cortex prepared and sandwich layer dry blend to be sent into respectively after cortex forcing machine and sandwich layer forcing machine carry out melting to extrude, cortex and sandwich layer extruder barrel temperature are 155 ~ 185 DEG C, die head temperature is 165 ~ 180 DEG C, screw speed is 10.7 ~ 18.8r/min, is namely able to PVC wood plastic foamed substrate through board mould is shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702278.8A CN105237910A (en) | 2015-10-26 | 2015-10-26 | PVC wood-plastic foaming base material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702278.8A CN105237910A (en) | 2015-10-26 | 2015-10-26 | PVC wood-plastic foaming base material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105237910A true CN105237910A (en) | 2016-01-13 |
Family
ID=55035762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510702278.8A Pending CN105237910A (en) | 2015-10-26 | 2015-10-26 | PVC wood-plastic foaming base material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105237910A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799137A (en) * | 2016-04-18 | 2016-07-27 | 黄石市鸿达塑料模具有限责任公司 | Production method and processing mold of steel lining-free PVC profiled material |
| CN105860318A (en) * | 2015-12-22 | 2016-08-17 | 北京化工大学 | A co-extruded double-foaming polymer composite material floor and a processing method thereof |
| CN105885302A (en) * | 2016-06-28 | 2016-08-24 | 威海市和光地板有限公司 | Floor board with environment-friendly, waterproof and flame-retardant functions and preparation method thereof |
| CN111016354A (en) * | 2019-10-08 | 2020-04-17 | 东莞市森蓝新材料科技有限公司 | Alloy plastic template and preparation method thereof |
| CN112592546A (en) * | 2021-02-26 | 2021-04-02 | 山东宏福化学有限公司 | Special composite ACR foaming regulator for PVC shoe material |
| CN113293948A (en) * | 2021-04-22 | 2021-08-24 | 徐州工业职业技术学院 | Straw fiber reinforced fireproof decorative plate and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302129A (en) * | 1995-05-09 | 1996-11-19 | Sekisui Chem Co Ltd | Vinyl chloride resin composition |
| CN1482165A (en) * | 2002-12-23 | 2004-03-17 | 北京欧尼克环保技术有限公司 | Wood plastic foamed material and machine-shaping process thereof |
| CN1500832A (en) * | 2002-11-18 | 2004-06-02 | 华昌工贸有限公司 | Polyvinyl chloride (PVC) plastic-wood panel |
| CN1923903A (en) * | 2005-08-31 | 2007-03-07 | 上海申威达机械有限公司 | Formulation of extrusion forming wood-plastic foaming decoration section bar and preparation method |
| CN102942726A (en) * | 2012-11-29 | 2013-02-27 | 西南科技大学 | Preparation method of sulfur fixation ash substituent CaCO3 filled polyolefin resin |
| CN103122112A (en) * | 2013-03-01 | 2013-05-29 | 山西峰岩新型建材股份有限公司 | PVC (polyvinyl chloride)-based wood plastic and preparation method thereof |
| CN103509288A (en) * | 2013-09-13 | 2014-01-15 | 临沂康亿家生态木业有限公司 | PVC foam wood/plastic composite material and manufacturing method thereof |
-
2015
- 2015-10-26 CN CN201510702278.8A patent/CN105237910A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08302129A (en) * | 1995-05-09 | 1996-11-19 | Sekisui Chem Co Ltd | Vinyl chloride resin composition |
| CN1500832A (en) * | 2002-11-18 | 2004-06-02 | 华昌工贸有限公司 | Polyvinyl chloride (PVC) plastic-wood panel |
| CN1482165A (en) * | 2002-12-23 | 2004-03-17 | 北京欧尼克环保技术有限公司 | Wood plastic foamed material and machine-shaping process thereof |
| CN1923903A (en) * | 2005-08-31 | 2007-03-07 | 上海申威达机械有限公司 | Formulation of extrusion forming wood-plastic foaming decoration section bar and preparation method |
| CN102942726A (en) * | 2012-11-29 | 2013-02-27 | 西南科技大学 | Preparation method of sulfur fixation ash substituent CaCO3 filled polyolefin resin |
| CN103122112A (en) * | 2013-03-01 | 2013-05-29 | 山西峰岩新型建材股份有限公司 | PVC (polyvinyl chloride)-based wood plastic and preparation method thereof |
| CN103509288A (en) * | 2013-09-13 | 2014-01-15 | 临沂康亿家生态木业有限公司 | PVC foam wood/plastic composite material and manufacturing method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860318A (en) * | 2015-12-22 | 2016-08-17 | 北京化工大学 | A co-extruded double-foaming polymer composite material floor and a processing method thereof |
| CN105799137A (en) * | 2016-04-18 | 2016-07-27 | 黄石市鸿达塑料模具有限责任公司 | Production method and processing mold of steel lining-free PVC profiled material |
| CN105885302A (en) * | 2016-06-28 | 2016-08-24 | 威海市和光地板有限公司 | Floor board with environment-friendly, waterproof and flame-retardant functions and preparation method thereof |
| CN105885302B (en) * | 2016-06-28 | 2018-05-08 | 威海市和光地板有限公司 | Floor with environment-friendly waterproof flame retarding function and preparation method thereof |
| CN111016354A (en) * | 2019-10-08 | 2020-04-17 | 东莞市森蓝新材料科技有限公司 | Alloy plastic template and preparation method thereof |
| CN112592546A (en) * | 2021-02-26 | 2021-04-02 | 山东宏福化学有限公司 | Special composite ACR foaming regulator for PVC shoe material |
| CN113293948A (en) * | 2021-04-22 | 2021-08-24 | 徐州工业职业技术学院 | Straw fiber reinforced fireproof decorative plate and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105237910A (en) | PVC wood-plastic foaming base material and preparation method thereof | |
| CN100491471C (en) | Making process of compound wood-plastic material product | |
| CN102408736B (en) | Flame retardant high-wood content wood-plastic composite material and preparation method thereof | |
| CN101596732B (en) | Manufacturing method for wood-plastic composite floor | |
| CN102492242B (en) | Polyvinyl chloride (PVC) wood-plastic board and preparation method thereof | |
| CN105419372A (en) | Method of preparing wood-plastic composite material with modified wood powder and waste plastic | |
| CN102850692A (en) | Method for producing wood plastic composite pipes and pipe fittings | |
| CN104479223A (en) | Wood-plastic composite prepared by use of short fiber and preparation method thereof | |
| CN102250476A (en) | Bamboo-fiber-based micro-foamed wood-plastic composite material and preparation method thereof | |
| CN103740005B (en) | The factory formula of a kind of waste PVC wood-plastic composition and technique | |
| CN105602106A (en) | Co-extrusion wood-plastic composite with anti-static surface and manufacturing method thereof | |
| CN102250482A (en) | Improved wood-plastic composite material and preparation method thereof | |
| CN103252952B (en) | The special-shaped sheet material that after the mixing of wheat straw fiber, flyash, filled thermoplastic makes and preparation method | |
| CN102775802A (en) | Crop straw fiber-based composite material | |
| CN101319077A (en) | Formula for waste and old PVC cable sheath/wood meal composite panel and manufacturing method | |
| CN104927386A (en) | Wood plastic material production process | |
| CN103642259B (en) | A kind of fire-retardant polyolefin based wood plastic composite material | |
| CN102492246A (en) | Formula and production method of wastePVC (polyvinyl chloride) cable outer skin/wood powder composite plate | |
| CN105348842B (en) | A kind of stalk fibre based biomass composite material and preparation method thereof | |
| CN101880427A (en) | Renewable imitation wood and manufacturing method thereof | |
| CN105295223A (en) | PVC wood-plastic skin formation foaming base material and preparation method thereof | |
| CN104403342A (en) | High-strength wood-plastic composite with swelling resistance, moisture resistance and ageing resistance and preparation method of wood-plastic composite | |
| CN104119589A (en) | Preparation method for carbon-plastic fiber composite material | |
| CN104327461B (en) | Utilize the method that waste printed circuit board powder-granule material produces high density environment-friendly sheet | |
| CN102993604A (en) | Pulverized coal ash foamed sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160113 |