CN105670322A - Process for preparing wood-rubber composite material based on rubber mixing method - Google Patents
Process for preparing wood-rubber composite material based on rubber mixing method Download PDFInfo
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- CN105670322A CN105670322A CN201410659923.8A CN201410659923A CN105670322A CN 105670322 A CN105670322 A CN 105670322A CN 201410659923 A CN201410659923 A CN 201410659923A CN 105670322 A CN105670322 A CN 105670322A
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Abstract
The invention discloses a wood-rubber composite material prepared with a rubber mixing method, and a preparation process thereof. According to the invention, wood powder, wood fiber and tire synthetic rubber are adopted as raw material, and a rubber product processing process is adopted. The process comprises mixing, open milling and vulcanization molding. With the process, the wood-rubber composite material is obtained. The process provided by the invention is simple, and is convenient to operate. No adhesive is doped during the entire process, and rubber is directly adopted for crosslinking molding, such that the process is economical and environment-friendly. The prepared wood-rubber composite material has good strength, high elasticity, high hardness, low water absorption expansion rate, and no formaldehyde release.
Description
Technical field
The present invention relates to one utilizes method for mixing rubber to manufacture wood-rubber composite and preparation technology thereof.
Technical background
Wood-rubber composite is a kind of Multifunction environment-friendly materials just put forward in recent years, and the main research and utilization wood-based plate heat pressing process of researcher manufactures wood-rubber multi-functional environment-protection composite both at home and abroad, adhesive is mainly utilized to complete the bonding molding of bi-material, complex process, relatively costly, and the burst size of formaldehyde is also higher in adhesive, inadequate environmental protection. The present invention mainly discussion method for mixing rubber manufactures wood-rubber composite, uses for reference rubber processing, utilizes the crosslinking of rubber to complete processing and forming, eliminate inserting of adhesive, opened up the new approaches of wood-rubber processing technique.
Summary of the invention
Present invention solves the technical problem that and be, brush wood with timber, undersized log and industrial wood waste prepare wood powder up to specification, lumber fibre and tire synthetic rubber are raw material, manufacture wood-rubber composite, its technological process is the fritter that synthetic rubber is first cut into certain specification, it is then placed in banbury to plasticate, after rubber softening, place into the wood materials after a certain amount of drying and carry out mixing, put to open on a mill until by the material after mixing afterwards and be smelt sheet material, paving mould, sulfidization molding in vulcanizer, cooling, it is finally made wood-rubber composite.
The present invention adopts the mixed refining process method of rubber, the wood powder prepared with brush wood and processing waste and preferred lumber fibre and to have the tire synthetic rubber that outdoor weather resistance can directly use be raw material, adopt the processing technique of rubber: mixing, open refining and sulfidization molding, prepare without adhesive, formaldehydeless release, the wood-based rubber environmental composites that technique simplifies.
Its technological process and process control condition are as follows:
One, material preparation technology:
(1) prepared by wood powder: utilize wood grinder and wood powder producing machine that brush wood, undersized log and industrial wood waste prepared into wood powder up to specification, and it is standby to filter out the wood powder of 80-100 order through mesh screen, uses front wood powder moisture content need to dry 3-5%.
(2) prepared by lumber fibre: preferably the lumber fibre of medium density fibre board (MDF) manufacturer production is standby, uses front lumber fibre moisture content need to dry 3-5%.
(3) prepared by sizing material: the tire synthetic rubber that preferably tire production producer purchases, and main component has: natural rubber, butadiene-styrene rubber, butadiene rubber, sulfur, white carbon black, stearic acid, age resistor and operation oil, ratio is it is known that the block rubber that synthetic rubber cuts into 50mm × 50mm is standby.
(4) ratio controls: according to performance requirements such as the hardness of material, elasticity, and the forming requirements of material, and the ratio regulating rubber and wood materials is: scope between 9:1-5:5.
Two, calendering process:
Proportionally being put in use for laboratory 3L banbury by the standby sizing material of well cutting, melting temperature is too low, and rubber molecular chain not easily flows, and sizing material not easily plastifies, the too high easy presulfurization of then rubber of temperature, is 60-70 DEG C by water-cool control melting temperature; Rotating speed is too low, and rubber not easily shears plasticizing, and rotating speed is too high, and then easily local is raw hot to shear fierceness, causes the local presulfurization of rubber, is 20-30r/min by governor control rotor speed, and plasticate synthetic rubber 3min; Suspending machine, add a certain proportion of wood materials, it is uniform that the control of mixing time is based on mixing of materials, and for avoiding rubber presulfurization, mixing time is not easily long, and controlling bi-material mixing time is 5-7min, is taken out by material afterwards from banbury.
Three, sweetening process is opened:
Controlling mill spacing is 2mm, is put in mill by the material of taking-up and opens refining, opens refining number of times too much, then sizing material can tacky, and the mechanical property of vulcanizate can reduce, and controls every sheet and opens that to refine number of times be 3-5 time.
Four, sulfuration process:
Being cut out putting in mould by opening the sheet material refined, control curing temperature and be 155-165 DEG C, vulcanization is segmentation pressurization, post-cure, segmentation is pressurized with being beneficial to the pre-heat flow of early stage of sizing material and later stage pressurization sizing, and secondary pressurized is conducive to the aerofluxus of sizing material, it is to avoid material bubbling.
By the wood-rubber composite that above-mentioned technological process and control condition are made, uniform in material, the material appearance of sulfidization molding is glossiness black, elastic properties of materials is good, good stability of the dimension, expansion rate of water absorption is lower than wood-base materials, and hardness relatively rubber is high, formaldehydeless release, is good outdoor use composite.
Accompanying drawing explanation
Fig. 1 is the perspective, cut-away view of wood powder-rubber composite, wherein mark: 1-rubber, 2-wood powder.
Fig. 2 is the perspective, cut-away view of lumber fibre-rubber composite, wherein mark: 1-rubber, 3-lumber fibre, and lumber fibre non-directional arranges.
Fig. 3 is present invention process schematic flow sheet.
Technological process shown in Fig. 3, below by two embodiments, selects wood materials two kinds different: wood powder and lumber fibre, is carried out illustrating.
Detailed description of the invention
Embodiment 1: wood powder-rubber composite, implements by following four step:
One, material preparation technology:
(1) prepared by wood powder: utilize wood grinder that brush wood, undersized log and industrial wood waste are prepared into wood powder up to specification, and it is standby to filter out the wood powder of 80-100 order through mesh screen, using front wood powder need to dry 8-16h at 103 DEG C, control moisture content is 3-5%.
(2) prepared by sizing material: the tire synthetic rubber that preferably tire production producer purchases, and main component has: natural rubber, butadiene-styrene rubber, butadiene rubber, sulfur, white carbon black, stearic acid, age resistor and operation oil, ratio is it is known that the block rubber that tire synthetic rubber cuts into 50mm × 50mm is standby.
(3) ratio controls: the proportion determining rubber and wood powder is 9:1-5:5, and gross mass is fixed on 1600g by the volume requirement according to banbury.
Two, calendering process:
Proportionally being put into by the standby sizing material of well cutting in use for laboratory 3L banbury, control banburying temperature and be 60-70 DEG C, control rotor speed is 20-30r/min, and first plasticate synthetic rubber 3min;Suspend machine afterwards, add a certain proportion of wood materials, and compounding rubber 5-7min, takes out material from banbury.
Three, sweetening process is opened:
Controlling mill spacing is 2mm, is put in mill by the material of taking-up and opens refining, and every sheet opens refining 3-5 time.
Four, sulfuration process:
It is cut out putting in mould by opening the sheet material refined, control curing temperature and be 155-165 DEG C, vulcanization is segmentation pressurization, post-cure, first precompressed 1-2min, pressure is 2-4MPa, repressurization 3-5min, pressure is 13-15MPa, the pressure release of lower platen decline afterwards, repressurization 5-7min, pressure is 13-15MPa; Afterwards material is cooled down under room temperature and display 24h, be both finished product.
Embodiment 2: lumber fibre-rubber composite, implements by following four step:
One, material preparation technology:
(1) prepared by lumber fibre: the preferably lumber fibre of medium density fibre board (MDF) manufacturer, uses front lumber fibre need to dry 8-16h at 103 DEG C, and control moisture content is 3-5%.
(2) prepared by sizing material: the tire synthetic rubber that preferably tire production producer purchases, and main component has: natural rubber, butadiene-styrene rubber, butadiene rubber, sulfur, white carbon black, stearic acid, age resistor and operation oil, ratio is it is known that the block rubber that tire synthetic rubber cuts into 50mm × 50mm is standby.
(3) ratio controls: the proportion determining rubber and the wood fiber is 9:1-5:5, and gross mass is fixed on 1200g by the bulkiness according to the volume requirement of banbury and lumber fibre.
Two, calendering process:
Proportionally being put into by the standby sizing material of well cutting in use for laboratory 3L banbury, control banburying temperature and be 60-70 DEG C, control rotor speed is 20-30r/min, and first plasticate synthetic rubber 3min; Suspend machine afterwards, add a certain proportion of wood powder, and compounding rubber 5-7min, takes out material from banbury.
Three, sweetening process is opened:
Controlling mill spacing is 2mm, is put in mill by the material of taking-up and opens refining, and every sheet opens refining 3-5 time.
Four, sulfuration process:
It is cut out putting in mould by opening the sheet material refined, control curing temperature and be 155-165 DEG C, vulcanization is segmentation pressurization, post-cure, first precompressed 1-2min, pressure is 2-4MPa, repressurization 3-5min, pressure is 13-15MPa, the pressure release of lower platen decline afterwards, repressurization 5-7min, pressure is 13-15MPa; Afterwards material is cooled down under room temperature and display 24h, be both finished product
The above, be only the specific embodiment of the present invention, but protection scope of the present invention be not limited thereto, any change expected without creative work or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with claims protection defined.
Claims (5)
1. a wood-rubber composite is characterised by: the wood powder utilizing wood machining residues to prepare and preferred lumber fibre are with to have the tire synthetic rubber that outdoor weather resistance can directly use be raw material, prepare without adhesive, uniform in material, intensity is good, elastic high, expansion rate of water absorption is low, the environment protection multifunctional wood-rubber composite of formaldehydeless release, preparation technology is simple, easy to operate.
2. rubber composite as claimed in claim 1, it is characterised in that: directly utilize rubber as binding agent sulfidization molding, it does not have the introducing of adhesive, formaldehydeless release.
3. rubber composite as claimed in claim 1, it is characterised in that: utilizing the mixing wood materials of method and rubber that manufacture rubber, make material more uniform, mechanics of materials intensity is good.
4. rubber composite as claimed in claim 1, it is characterised in that: rubber natural resiliency is good, and does not absorb water, and while giving elastic properties of materials, is wrapped up by wood materials, overcomes the shortcoming that wood materials expansion rate of water absorption is high.
5. the processing technology of a kind of rubber composite as claimed in claim 1, it is characterised in that comprise the steps of
One, material preparation technology:
(1) prepared by wood powder: utilize wood grinder and wood powder producing machine that brush wood, undersized log and industrial wood waste break into wood powder up to specification, and it is standby to filter out the wood powder of 80-100 order through mesh screen, uses front wood powder moisture content need to dry 3-5%.
(2) prepared by lumber fibre: preferably the lumber fibre of medium density fibre board (MDF) manufacturer production is standby, uses front lumber fibre moisture content need to dry 3-5%.
(3) prepared by sizing material: the tire synthetic rubber that preferably tire production producer purchases, and main component has: natural rubber, butadiene-styrene rubber, butadiene rubber, sulfur, white carbon black, stearic acid, age resistor and operation oil, ratio is it is known that the block rubber that tire synthetic rubber cuts into 50mm × 50mm is standby.
(4) ratio controls: according to performance requirements such as the hardness of material, elasticity, and the forming requirements of material, and the ratio regulating rubber and wood materials is: scope between 9:1-5:5.
Two, calendering process:
Proportionally being put in use for laboratory 3L banbury by the standby sizing material of well cutting, melting temperature is too low, and rubber molecular chain not easily flows, and sizing material not easily plastifies, the too high easy presulfurization of then rubber of temperature, is 60-70 DEG C by water-cool control melting temperature; Rotating speed is too low, and rubber not easily shears plasticizing, and rotating speed is too high, and then easily local is raw hot to shear fierceness, causes the local presulfurization of rubber, is 20-30r/min by governor control rotor speed, and plasticate synthetic rubber 3min; Suspending machine, add a certain proportion of wood materials, it is uniform that the control of mixing time is based on mixing of materials, and for avoiding rubber presulfurization, mixing time is not easily long, and controlling bi-material mixing time is 5-7min, is taken out by material afterwards from banbury.
Three, sweetening process is opened:
Controlling mill spacing is 2mm, is put in mill by the material of taking-up and opens refining, opens refining number of times too much, then sizing material can tacky, and the mechanical property of vulcanizate can reduce, and controls every sheet and opens that to refine number of times be 3-5 time.
Four, sulfuration process:
Being cut out putting in mould by opening the sheet material refined, control curing temperature and be 155-165 DEG C, vulcanization is segmentation pressurization, post-cure, segmentation is pressurized with being beneficial to the pre-heat flow of early stage of sizing material and later stage pressurization sizing, and secondary pressurized is conducive to the aerofluxus of sizing material, avoid material bubbling, material elder generation precompressed 1-2min, pressure is 2-4MPa, repressurization 3-5min, pressure is 13-15MPa, the pressure release of lower platen decline afterwards, repressurization 5-7min, pressure is 13-15MPa; Afterwards material is cooled down under room temperature and display 24h, be both finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410659923.8A CN105670322A (en) | 2014-11-19 | 2014-11-19 | Process for preparing wood-rubber composite material based on rubber mixing method |
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| CN201410659923.8A CN105670322A (en) | 2014-11-19 | 2014-11-19 | Process for preparing wood-rubber composite material based on rubber mixing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106751329A (en) * | 2016-12-28 | 2017-05-31 | 德轮橡胶股份有限公司 | A kind of tear-resistant good airproof performance Tire rubber material |
| CN111173231A (en) * | 2020-02-28 | 2020-05-19 | 广州厚邦木业制造有限公司 | Laminated composite cork floor and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225930A (en) * | 1998-02-13 | 1999-08-18 | 张守荣 | High-polymer synthesized wood material |
| CN101921491A (en) * | 2010-08-23 | 2010-12-22 | 东莞市启原实业有限公司 | Wood plastic composite material |
| CN102532612A (en) * | 2010-12-30 | 2012-07-04 | 徐卫东 | Rubber product and processing technology thereof |
| CN104059268A (en) * | 2014-06-23 | 2014-09-24 | 青岛乾祥环保技术有限公司 | Green biomaterial rubber |
-
2014
- 2014-11-19 CN CN201410659923.8A patent/CN105670322A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225930A (en) * | 1998-02-13 | 1999-08-18 | 张守荣 | High-polymer synthesized wood material |
| CN101921491A (en) * | 2010-08-23 | 2010-12-22 | 东莞市启原实业有限公司 | Wood plastic composite material |
| CN102532612A (en) * | 2010-12-30 | 2012-07-04 | 徐卫东 | Rubber product and processing technology thereof |
| CN104059268A (en) * | 2014-06-23 | 2014-09-24 | 青岛乾祥环保技术有限公司 | Green biomaterial rubber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106751329A (en) * | 2016-12-28 | 2017-05-31 | 德轮橡胶股份有限公司 | A kind of tear-resistant good airproof performance Tire rubber material |
| CN111173231A (en) * | 2020-02-28 | 2020-05-19 | 广州厚邦木业制造有限公司 | Laminated composite cork floor and preparation method thereof |
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Application publication date: 20160615 |