CN105348688A - Modified-coal-ash plastic foamed composite board and preparation method therefor - Google Patents
Modified-coal-ash plastic foamed composite board and preparation method therefor Download PDFInfo
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Abstract
The invention relates to the field of sheet materials and particularly relates to a modified-coal-ash plastic foamed composite board and a preparation method therefor. The method comprises the steps of adding modified coal ash, which takes water-soluble phenol-formaldehyde resin and resin aqueous emulsions as composite modifiers, in both a core layer and a shell layer of the composite board, independently preparing core-layer and shell-layer mixtures in a manner of being matched with a stabilizer, a foamer, a lubricant, a plasticizer, a toughener and the like, and carrying out extrusion melting, molding and cutting, thereby obtaining the product. The prepared modified-coal-ash plastic foamed composite board is superior in performance and low in cost, the contact between resin and the coal ash is firm, and the preparation method is simple and easy to operate and is pollution-free to environment.
Description
Technical field
The present invention relates to composition board field, especially a kind of modified coal plastic foamed composite board and preparation method thereof.
Background technology
The solid waste discharge that coal ash is heat power plant, boiler house produces.The generation of national coal ash in 2012 reaches 500,000,000 tons, if the coal ash of enormous amount being dealt with improperly producing serious pollution, increasing the weight of environment and going from bad to worse.The major ingredient of coal ash is silicon-dioxide, aluminium sesquioxide, and is adsorbed with part free-water or chemically-bonded water, can carry out recycling.Present coal ash is mainly used in material of construction preparation, as low in value addeds such as aerated bricks, light wall material, coal-dust brick, cement, the field that state of the art content is low.Coal ash also gradually for macromolecular material padding field, but due to coal ash density large, the many wetting abilities of surface hydroxyl are strong, and cause free settling, layering in the material, the shortcomings such as poor compatibility, consumption is little.There are abundant coal resources in China, utilizes coal to generate electricity in a long time and remains a kind of a kind of mode of the main acquisition energy.Therefore, high-quality, the high value added utilization of Devoting Major Efforts To Developing coal ash, the weighting agent such as white carbon black, calcium carbonate, potter's clay, talcum powder substituting highly energy-consuming is the inevitable requirement of China's sustained economic development.
Macromolecular material has now been widely used in the every field in economic life.General-purpose plastics comprises polyethylene, polypropylene, polyvinyl chloride, polystyrene etc., and wherein polyvinyl chloride consumption occupies 70% in general-purpose plastics.Plastic material density can be made to alleviate by foaming process, there is damping, heat insulation, sound insulation, advantage that specific tenacity is high.Plastic foamed palpus ensures certain fluidity of molten and melt strength, adjusts the consumptions such as whipping agent, softening agent, promotor simultaneously.If add in the plastic, coal ash is blended prepares foam composite material, and this situation will be more complicated, and foaming technique has more difficulty.
In order to improve coal ash loading level in the plastic, improving composite material combination property, modification must be carried out to coal ash.Adopt coupling agent treatment filler to be activation inert filler, improve the main method of plastics and filler consistency.Chinese patent literature " prepares the method (grant number CN103319762B) of high filling polyvinyl chloride or composite polyolefine material " with Industrial Solid Waste and " a kind of method (publication number CN104356505A) of adding large Industrial Solid Waste and preparing lightweight general-purpose plastics matrix material " discloses the method for treated coal ash: adopt 200-800 DEG C and bake and bank up with earth 0.5-5 hour; with silane coupling agent, titanate coupling agent, aluminate coupling agent pre-treatment, then with softening agent, resin, whipping agent etc. through screw rod granulation or injection moulding." a kind of resource-conserving ash moulds foaming macromolecular matrix material and preparation method thereof (publication number CN102617950) " uses coupling agent treatment coal ash in high-speed mixer, then it is blended to add the auxiliary agent high speeds such as whipping agent, direct blowing." a kind of utilize composite coupling agent to carry out method and the application (grant number CN102850825B) of surface modification to fly ash float " adopts multiple coupling agent to carry out composite treatment process: flyash is sintered 48h at 350-450 DEG C, successively stir 1.5-2.5h with diluted acid, diluted alkaline again, with deionized water rinsing to neutral, finally use composite coupling agent treatment.The hydrofluoric acid corrosion treatment of " preparation method's (authorizing publication number CN101348578B) of modified fly ash micro-sphere rubber filling " employing 30-47% 2 days, with sodium hydroxide, calcium hydroxide, water treatment, extremely neutral with carbonic acid gas adjustment PH again, finally use coupling agent treatment.There is following defect in above method: coupling agent cost is high, and pretreatment technology is complicated, and the time is long, efficiency is low; Particularly adopt highly corrosive bronsted lowry acids and bases bronsted lowry very high to equipment requirements, also harm is greatly produced to person health; Coal ash modification is uneven, affects composite processing and material physical property.
Summary of the invention
The present invention is directed to the problems referred to above and propose a kind of modified coal plastic foamed composite board and preparation method thereof, adopt modified coal effectively to promote the performance of plastic foamed composite board.
To achieve these goals, the present invention by the following technical solutions, a kind of modified coal plastic foamed composite board comprises sandwich layer and cortex, core layer raw material comprises by weight: PVC resin powder 100 parts, modified coal 40 ~ 120 parts, cortex raw material comprise by weight: PVC resin powder 100 parts, modified coal 20 ~ 60 parts, described modified coal carries out modification to coal ash with water soluble phenol resin, resin water miscible liquid for composite modifier.
Described composite modifier composition counts phenolic resin aqueous solution by weight: resin water miscible liquid=25 ~ 100:100, parts by weight, described composite modifier: coal ash is 10 ~ 50:100.
Described core layer raw material also comprises by weight: stablizer 1.5 ~ 2.5 parts, lubricant 0.2 ~ 1.2 part, 0.5 ~ 1.2 part, softening agent, toughner 0.5 ~ 2 part, whipping agent 0.8 ~ 1.5 part, feed back 10 ~ 50 parts; Described cortex also comprises by weight: stablizer 2 ~ 3 parts, lubricant 0.5 ~ 1.5 part, 0.5 ~ 1.2 part, softening agent, toughner 3 ~ 6 parts.
Prepare a method for modified coal plastic foamed composite board, comprise the following steps:
Prepared by a modified coal: coal ash by weight: coal ash and composite modifier are chosen in composite modifier=100:10 ~ 50, add kneader, mediates mixing 5 ~ 15min under normal temperature; And then while stirring in this kneader, be warmed up to 120 ~ 150 DEG C of dryings, reaction; Last cool to room temperature obtains modified coal;
Prepared by b core, cortex compound: weigh up material by sandwich layer and cortex material proportion respectively and join in high temperature mixing machine, be heated to 100 ~ 120 DEG C while stirring, then control temperature mixes 5 ~ 20min at 100 ~ 120 DEG C; Above-mentioned hot mixture material is drained into mixing in low temperature low speed mixer by sealing-duct, stirs, is cooled, is finally cooled to 30 ~ 60 DEG C to stop stirring, obtains cortex compound and sandwich layer compound;
C extrudes melting: by cortex compound in the first extrusion equipment through melting, compression, homogenizing, molten sheet material A is extruded into by die orifice, by the melting in the second extrusion equipment of sandwich layer compound, compression, homogenizing, foaming, be extruded into molten sheet material B by die orifice;
D is shaping: move in same mould by molten sheet material A and molten sheet material B, through continuous pressure, bonds, is combined into core layer foaming, the composite sheet work in-process that cortex does not foam closely knit, then move into refrigerating unit, cooling, sizing;
E cuts: length is cut as required, obtains product.
Described resin water miscible liquid is vinyl chloride-vinyl acetate copolymer water miscible liquid, one or both in vinyl chloride-acrylate copolymer water miscible liquid, vinyl chloride-vinyl acetate-copolymer-maleic anhydride water miscible liquid, polyurethane aqueous emulsions; Described phenolic resin aqueous solution weight percent is 30% ~ 60%, described resin water miscible liquid weight percent is 10% ~ 50%.
Described PVC resin powder select in general suspension polymerization 8 type (SG-8) or 7 types (SG-7) resin one or both.
Stablizer select in unleaded environment-friendly PVC calcium-zinc composite stabilizing agent, rare-earth stabilizer one or both; Lubricant select in polyethylene wax (PE-WAX), calcium stearate, chlorinatedpolyethylene wax, paraffin, fatty acid alcohol, fatty amide one or both; Softening agent select in epoxy soybean oil, peanut oil, dioctyl phthalate (DOP), dimixo-octyl phthalate, low-molecular-weight liquid polyester one or both, special low-molecular-weight liquid polyester comes from the split product of polyester bottles as mineral water bottle, beverage bottle, food oil drum; Whipping agent select in Cellmic C 121 (blowing agent AC), Diisopropyl azodicarboxylate, azoformic acid isopropyl ester, diethyl azodiformate, sodium bicarbonate one or both; Toughner selects chlorinatedpolyethylene, paracril, carboxy nitrile rubber, chloroprene rubber, chlorinated butyl rubber, thermoplastic polyurethane, ethylene-vinyl acetate copolymer, one or both in esters of acrylic acid rubber.
The temperature parameter of described sandwich layer extrusion equipment is: 140 DEG C, transportation section, 180 DEG C, compression section, melt zone 220 DEG C, homogenizing zone 210 DEG C.
The temperature parameter of cortex extrusion equipment is: 160 DEG C, transportation section, 200 DEG C, compression section, melt zone 220 DEG C, homogenizing zone 210 DEG C.
Described die temperature is 180 DEG C.
Described die orifice is long rectangular orifice, and die gap is adjustable, can regulate sandwich layer and skin thickness as required.
Described phenolic resin aqueous solution, employing phenol, formaldehyde are raw material, and with sodium hydroxide, potassium hydroxide, hydrated barta etc. obtain for catalyzer synthesizes.
Described resin water miscible liquid is vinyl chloride-vinyl acetate copolymer water miscible liquid, one or both in vinyl chloride-acrylate copolymer water miscible liquid, vinyl chloride-vinyl acetate-copolymer-maleic anhydride water miscible liquid, polyurethane aqueous emulsions.
Described phenolic resin aqueous solution weight percent is 30% ~ 60%; Described resin water miscible liquid weight percent is 10% ~ 50%.
Resin water miscible liquid is with OP-10, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, Soxylat A 25-7 be tensio-active agent formed emulsion, then add resin monomer and initiator polymerization obtain.
The PVC sheet of recovery selected by feed back, or the waste material produced in production process and tankage, and through coarse breaking, then abrasive dust obtains.
The present invention has the following advantages:
1. adopted coal ash adopts water soluble phenol resin, water solubility copolymer as modification agent, and cost is low, avoids adopting expensive coupling agent; Not containing poisonous and hazardous organic solvent, and the strong acid and strong base that corrodibility is extremely strong.Conveying between raw material adopts sealing-duct, improves Working environment, reduces environmental pollution;
2. adopt resin solution and the consumption of higher concentration, and adopt kneader to carry out the method for mediating again dry reaction, make mixing more even, surface-coated is better, and the contact of resin and coal ash is more firm, and the flow process of modification simultaneously shortens, efficiency improves;
3. low-molecular-weight liquid polyester selected by softening agent, and low-molecular-weight liquid polyester comes from the split product of polyester bottles as mineral water bottle, beverage bottle, food oil drum, and products material is cheap;
4. can improve the loading level in polyvinyl chloride resin through modified coal ash, performance is more excellent; Adopt from the low-molecular-weight polyester of waste polyester cracking and PVC sheet, or the waste material produced in production process and tankage are as feed back, have and turn waste into wealth, realize the recycle of resource, and can effectively reduce costs;
5. form compounding machine by two extrusion equipments, the bi-material of sandwich layer and cortex is carried out melting compound, effectively improves production efficiency;
6. die orifice is long rectangular orifice, and die gap is adjustable, can regulate sandwich layer and skin thickness as required.
Embodiment
For setting forth the predetermined object and technique means and effect that the present invention reaches further, below in conjunction with embodiment, specific embodiment of the invention scheme is described in detail.
Embodiment 1: a kind of modified coal plastic foamed composite board comprises sandwich layer, cortex, and core layer raw material comprises by weight: suspension polymerization 8 type PVC resin powder 100 parts, modified coal 80 parts, stablizer 2 parts, whipping agent 1 part, lubricant 0.7 part, 0.8 part, softening agent, toughner 1.2 parts, feed back 30 parts; Cortex raw material comprises by weight: suspension polymerization 8 type PVC resin powder 100 parts, modified coal 40 parts, stablizer 2.5 parts, lubricant 1 part, 0.9 part, softening agent, toughner 4.5 parts; Modified coal carries out modification to coal ash with water soluble phenol resin, resin water miscible liquid for composite modifier, coal ash by weight: composite modifier=100:30, described resin water miscible liquid is vinyl chloride-vinyl acetate copolymer water miscible liquid, its weight percent is 30%, phenolic resin aqueous solution weight percent is 45%, by weight, vinyl chloride-vinyl acetate copolymer water miscible liquid: phenolic resin aqueous solution=1:1.
Prepare modified coal plastic foamed composite board as above, comprise the following steps:
Prepared by a modified coal: coal ash by weight: composite modifier=100:30 chooses coal ash and composite modifier, modification recombiner weight percent to be 30% vinyl chloride-vinyl acetate copolymer water miscible liquid and weight percent be 45% phenolic resin aqueous solution form, by weight, vinyl chloride-vinyl acetate copolymer water miscible liquid: phenolic resin aqueous solution=1:1, add kneader, under normal temperature, mediate mixing 10min; And then while stirring in this kneader, be warmed up to 140 DEG C of dryings, reaction; Last cool to room temperature obtains modified coal;
Prepared by b core, cortex compound: weigh up material by sandwich layer and cortex material proportion respectively and join in high temperature mixing machine, be heated to 100 ~ 120 DEG C while stirring, then control temperature mixes 15min at 100 ~ 120 DEG C; Above-mentioned hot mixture material is drained into mixing in low temperature low speed mixer by sealing-duct, stirs, is cooled, is finally cooled to 35 DEG C to stop stirring, obtains cortex compound and sandwich layer compound;
C extrudes melting: by cortex compound in the first extrusion equipment through melting, compression, homogenizing, molten sheet material A is extruded into by die orifice, by the melting in the second extrusion equipment of sandwich layer compound, compression, homogenizing, foaming, be extruded into molten sheet material B by die orifice;
D is shaping: move in same mould by molten sheet material A and molten sheet material B, through continuous pressure, bonds, is combined into core layer foaming, the composite sheet work in-process that cortex does not foam closely knit, then move into refrigerating unit, cooling, sizing;
E cuts: length is cut as required, obtains product.
Product is carried out detection obtain:
| Sequence number | Project | Unit | Detected value |
| 1 | Surface hardness (shore hardness) | H D | 62 |
| 2 | Simply supported beam unnotched impact strength | KJ/M 2 | 18.8 |
| 3 | Flexural strength | MPa | 28.3 |
| 4 | Bending elastic modulus | MPa | 1402 |
| 5 | Vicat softening point | ℃ | 76 |
| 6 | Abscess quality | Evenly, fine and closely woven zero defect | |
| 7 | Sandwich layer and cortex stripping strength | N/cm 2 | 32 |
Embodiment 2: a kind of modified coal plastic foamed composite board comprises sandwich layer, cortex, core layer raw material comprises by weight: suspension polymerization 7 type PVC resin powder 100 parts, modified coal 40 parts, stablizer 1.5 parts, whipping agent 1.5 parts, lubricant 1.2 parts, 1.2 parts, softening agent, toughner 2 parts, feed back 50 parts; Cortex raw material comprises by weight: suspension polymerization 8 type PVC resin powder 100 parts, modified coal 60 parts, stablizer 3 parts, lubricant 1.5 parts, 1.2 parts, softening agent, toughner 6 parts; Modified coal carries out modification to coal ash with water soluble phenol resin, resin water miscible liquid for composite modifier, coal ash by weight: composite modifier=100:10, described resin water miscible liquid is vinyl chloride-acrylate copolymer water miscible liquid and vinyl chloride-vinyl acetate-copolymer-maleic anhydride water miscible liquid, its weight percent is 50%, phenolic resin aqueous solution weight percent is 60%, phenolic resin aqueous solution by weight: resin water miscible liquid=25:100.
Prepare modified coal plastic foamed composite board as above, comprise the following steps:
Prepared by a modified coal: coal ash by weight: composite modifier=100:10 chooses coal ash and composite modifier, modification recombiner by weight percent be 50% vinyl chloride-acrylate water miscible liquid and vinyl chloride-vinyl acetate-copolymer-maleic anhydride water miscible liquid and weight percent be 60% phenolic resin aqueous solution form, phenolic resin aqueous solution by weight: resin water miscible liquid=25:100, add kneader, under normal temperature, mediate mixing 5min; And then while stirring in this kneader, be warmed up to 150 DEG C of dryings, reaction; Last cool to room temperature obtains modified coal;
Prepared by b core, cortex compound: weigh up material by sandwich layer and cortex material proportion respectively and join in high temperature mixing machine, be heated to 100 ~ 120 DEG C while stirring, then control temperature mixes 20min at 100 ~ 120 DEG C; Above-mentioned hot mixture material is drained into mixing in low temperature low speed mixer by sealing-duct, stirs, is cooled, is finally cooled to 60 DEG C to stop stirring, obtains cortex compound and sandwich layer compound;
C extrudes melting: by cortex compound in the first extrusion equipment through melting, compression, homogenizing, molten sheet material A is extruded into by die orifice, by the melting in the second extrusion equipment of sandwich layer compound, compression, homogenizing, foaming, be extruded into molten sheet material B by die orifice;
D is shaping: move in same mould by molten sheet material A and molten sheet material B, through continuous pressure, bonds, is combined into core layer foaming, the composite sheet work in-process that cortex does not foam closely knit, then move into refrigerating unit, cooling, sizing;
E cuts: length is cut as required, obtains product.
Embodiment 3: a kind of modified coal plastic foamed composite board comprises sandwich layer, cortex, core layer raw material comprises by weight: suspension polymerization 7 type PVC resin powder 100 parts, modified coal 120 parts, stablizer 2.5 parts, whipping agent 0.8 part, lubricant 0.2 part, 0.5 part, softening agent, toughner 0.5 part, feed back 10 parts; Cortex raw material comprises by weight: suspension polymerization 7 type PVC resin powder 100 parts, modified coal 20 parts, stablizer 2 parts, lubricant 0.5 part, 0.5 part, softening agent, toughner 3 parts; Modified coal carries out modification to coal ash with water soluble phenol resin, resin water miscible liquid for composite modifier, coal ash by weight: composite modifier=100:50, described resin water miscible liquid is polyurethane aqueous emulsions, its weight percent is 10%, phenolic resin aqueous solution weight percent is 30%, phenolic resin aqueous solution by weight: resin water miscible liquid=50:100.
Prepare modified coal plastic foamed composite board as above, comprise the following steps:
Prepared by a modified coal: coal ash by weight: composite modifier=100:30, choose coal ash and composite modifier, modification recombiner by weight percent to be 10% polyurethane aqueous emulsions and weight percent be 30% phenolic resin aqueous solution form, phenolic resin aqueous solution by weight: resin water miscible liquid=25:100, add kneader, under normal temperature, mediate mixing 15min; And then while stirring in this kneader, be warmed up to 120 DEG C of dryings, reaction; Last cool to room temperature obtains modified coal;
Prepared by b core, cortex compound: weigh up material by sandwich layer and cortex material proportion respectively and join in high temperature mixing machine, be heated to 100 ~ 120 DEG C while stirring, then control temperature mixes 5min at 100 ~ 120 DEG C; Above-mentioned hot mixture material is drained into mixing in low temperature low speed mixer by sealing-duct, stirs, is cooled, is finally cooled to 30 DEG C to stop stirring, obtains cortex compound and sandwich layer compound;
C extrudes melting: by cortex compound in the first extrusion equipment through melting, compression, homogenizing, molten sheet material A is extruded into by die orifice, by the melting in the second extrusion equipment of sandwich layer compound, compression, homogenizing, foaming, be extruded into molten sheet material B by die orifice;
D is shaping: move in same mould by molten sheet material A and molten sheet material B, through continuous pressure, bonds, is combined into core layer foaming, the composite sheet work in-process that cortex does not foam closely knit, then move into refrigerating unit, cooling, sizing;
E cuts: length is cut as required, obtains product.
Embodiment 4: with embodiment 1 basic simlarity, its difference is: the resin that sandwich layer and cortex adopt is suspension polymerization 7 type polyvinyl chloride resin and mixes according to 1:1 with suspension polymerization 8 type polyvinyl chloride resin, by weight, vinyl chloride-vinyl acetate copolymer water miscible liquid: phenolic resin aqueous solution=100:75.
As mentioned above, be only present pre-ferred embodiments, therefore appoint and allly do not depart from this programme technology contents, according to technical spirit of the present invention, any simple change, equivalent variations and modification are made to above embodiment, all still belong to the scope of technical solution of the present invention.
Claims (10)
1. a modified coal plastic foamed composite board comprises sandwich layer and cortex, it is characterized in that: core layer raw material comprises by weight: PVC resin powder 100 parts, modified coal 40 ~ 120 parts, cortex raw material comprise by weight: PVC resin powder 100 parts, modified coal 20 ~ 60 parts, described modified coal carries out modification to coal ash with phenolic resin aqueous solution, resin water miscible liquid for composite modifier.
2. a kind of modified coal plastic foamed composite board according to claim 1, it is characterized in that: composite modifier composition counts phenolic resin aqueous solution by weight: resin water miscible liquid=25 ~ 100:100, parts by weight, described composite modifier: coal ash is 10 ~ 50:100.
3. a kind of modified coal plastic foamed composite board according to claim 1, it is characterized in that, described core layer raw material also comprises by weight: stablizer 1.5 ~ 2.5 parts, lubricant 0.2 ~ 1.2 part, 0.5 ~ 1.2 part, softening agent, whipping agent 0.8 ~ 1.5 part, toughner 0.5 ~ 2 part, feed back 10 ~ 50 parts; Described cortex also comprises by weight: stablizer 2 ~ 3 parts, lubricant 0.5 ~ 1.5 part, 0.5 ~ 1.2 part, softening agent, toughner 3 ~ 6 parts.
4. a kind of modified coal plastic foamed composite board according to claim 2, it is characterized in that: described resin water miscible liquid is vinyl chloride-vinyl acetate copolymer water miscible liquid, one or both in vinyl chloride-acrylate copolymer water miscible liquid, vinyl chloride-vinyl acetate-copolymer-maleic anhydride water miscible liquid, polyurethane aqueous emulsions; Described phenolic resin aqueous solution weight percent is 30% ~ 60%, described resin water miscible liquid weight percent is 10% ~ 50%.
5. require described a kind of modified coal plastic foamed composite board according to claim 1, it is characterized in that: described PVC resin powder select in general suspension polymerization 8 type (SG-8) or 7 types (SG-7) resin one or both.
6. prepare a method for the arbitrary described modified coal plastic foamed composite board of claim 1 to 5, it is characterized in that, comprise the following steps:
Prepared by a modified coal: coal ash by weight: coal ash and composite modifier are chosen in composite modifier=100:10 ~ 50, add kneader, mediates mixing 5 ~ 15min under normal temperature; And then while stirring in this kneader, be warmed up to 120 ~ 150 DEG C of dryings, reaction; Last cool to room temperature obtains modified coal;
Prepared by b core, cortex compound: weigh up material by sandwich layer and cortex material proportion respectively and join in high temperature mixing machine, be heated to 100 ~ 120 DEG C while stirring, then control temperature mixes 5 ~ 20min at 100 ~ 120 DEG C; Above-mentioned hot mixture material is drained into mixing in low temperature low speed mixer by sealing-duct, stirs, is cooled, is finally cooled to 30 ~ 60 DEG C to stop stirring, obtains cortex compound and sandwich layer compound;
C extrudes melting: by cortex compound in the first extrusion equipment through melting, compression, homogenizing, molten sheet material A is extruded into by die orifice, by the melting in the second extrusion equipment of sandwich layer compound, compression, homogenizing, foaming, be extruded into molten sheet material B by die orifice;
D is shaping: move in same mould by molten sheet material A and molten sheet material B, through continuous pressure, bonds, is combined into core layer foaming, the composite sheet work in-process that cortex does not foam closely knit, then move into refrigerating unit, cooling, sizing;
E cuts: length is cut as required, obtains product.
7. the preparation method of a kind of modified coal plastic foamed composite board according to claim 6, is characterized in that: the temperature parameter of described sandwich layer extrusion equipment is: 140 DEG C, transportation section, 180 DEG C, compression section, melt zone 220 DEG C, homogenizing zone 210 DEG C.
8. the preparation method of a kind of modified coal plastic foamed composite board according to claim 6, is characterized in that: the temperature parameter of cortex extrusion equipment is: 160 DEG C, transportation section, 200 DEG C, compression section, melt zone 220 DEG C, homogenizing zone 210 DEG C.
9. the preparation method of a kind of modified coal plastic foamed composite board according to claim 6, is characterized in that: die temperature is 180 DEG C.
10. the preparation method of a kind of modified coal plastic foamed composite board according to claim 6, is characterized in that: described die orifice is long rectangular orifice, and die gap is adjustable.
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| CN110357508A (en) * | 2019-08-01 | 2019-10-22 | 广东克洛科技建材股份有限公司 | A kind of sound insulation vibration damping fireproof mortar and preparation method thereof |
| CN113444375A (en) * | 2021-07-17 | 2021-09-28 | 郑州吉森木业有限公司 | High-strength aldehyde-free fly ash plate and manufacturing method thereof |
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| CN105348688B (en) | 2017-10-27 |
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