CN101575910A - Complex architectural template and preparation method thereof - Google Patents
Complex architectural template and preparation method thereof Download PDFInfo
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- CN101575910A CN101575910A CNA2009100595209A CN200910059520A CN101575910A CN 101575910 A CN101575910 A CN 101575910A CN A2009100595209 A CNA2009100595209 A CN A2009100595209A CN 200910059520 A CN200910059520 A CN 200910059520A CN 101575910 A CN101575910 A CN 101575910A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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Abstract
The invention relates to a complex architectural template and a preparation method thereof, wherein the template takes PVC as a main material to prepare a PVC foam board by adopting extrusion micro-foaming technology, and uses a cementing agent for firmly binding a metal mesh/glass fiber cloth into one integration between two or among more foam boards. The foam board is prepared by the components of the PVC, an ACR modifier, a CPE impact modifier, a foam modifier, a complex lead stabilizer, a lubricant, MBS resin, an AC foaming agent, active light calcium carbonate by a certain ratio. The preparation method of the template comprises the steps of proportioning materials, mixing materials, extruding, vacuum shaping, cooling, cutting, spraying the cementing agent, paving the metal mesh, heating at high temperature, cool pressing molding, cooling, edge cutting, and finally obtaining the product. The complex architectural template takes the PVC as the main material and has small hot expansion and cold contraction, construction convenience, high strength and good impact resistance; and the invention adopts extrusion foaming technology in preparation, thus leading the product to be high in output, low in energy consumption, light in weight and good in quality and to have sound insulation and thermal insulation effects.
Description
Technical field
The present invention relates to a kind of building form, specifically is a kind of complex architectural template and preparation method thereof.
Background technology
Traditional wooden form and bamboo offset plate are done construction formwork and have been obtained using widely in builing industry, but they are difficult for the demoulding when construction is used, fineness is poor, non-watertight, and meet the water layering of easily coming unstuck, especially use in the rainy day and more can reduce the application life of template greatly, and can not reclaim, the serious waste resource.
Existing plastic formwork is mainly polyethylene (PE) or polypropylene (PP), for the minimizing own wt that reduces production costs, inserts is mainly wood powder or rice bran etc., alleviated the impact resistance that weight also greatly reduces template simultaneously though these inserts have reduced cost.Secondly, because of the regional temperature difference of China is very big, the cold and hot contraction of polyethylene or polypropylene material is excessive, causes and can't construct.Existing polyethylene (PE) and polypropylene (PP) material price are far above polyvinyl chloride (PVC), so this class template on the market is feed back production substantially, and performance extreme difference, never market competition advantage.
At Chinese patent literature disclosed " a kind of complex architectural template " (publication number CN2737527Y), it is a raw material with polyethylene and polypropylene mainly, adopt hot-forming, lay wire lath or glass fabric in template center, increase its intensity, alleviate template weight to fill wood powder or rice bran etc., there is following problem in it: 1. the cold and hot contraction of polyethylene and/or polypropylene material is excessive, and causing can't normal construction; 2. adopt hot-formingly, the cost of production height yields poorly; 3. wood powder of Tian Chonging or rice bran can not guarantee template quality; The plastic bonding layer when bonding the temperature plasticization temperature that must reach these plastics could bond, promptly polyethylene and/or polyacrylic tack coat temperature be more than 160 ℃, make the time long, efficient is low, cost is high; 5. wire lath or glass fabric are arranged between the solid slab more than two or two, solid slab is difficult for ailing when construction, when subzero 10 degree left and right sides ailings, can ftracture.6. because the finished product cost is too high,, can't promote so never have market competition advantage.
Summary of the invention
Purpose of the present invention is intended to overcome the problem that above-mentioned existing polyethylene or poly-third plastic formwork exist, provide a kind of main be the complex architectural template and preparation method thereof of raw material with the polyvinyl chloride.
The present invention adopts following technical scheme to realize:
A kind of complex architectural template, be provided with wire lath/glass fabric (preferably wire lath) in this template, described template is major ingredient with the polyvinyl chloride, employing is extruded little foaming technique and is made the foam polyvinyl chloride plate, and foaming at two or many is integral wire lath/glass fabric strong bonded by cementing agent between the plates.
The prescription of described foaming plate contains following components in part by weight:
100 parts of polyvinyl chloride; 3～6 parts of ACR modifier;
8～15 parts of CPE impact modifiers, 11～16 parts of 530 foaming control agents;
3.5～6 parts of compound lead stabilizers; 1～2 part of sliding agent;
10～16 parts of MBS resins; 0.35～0.78 part of AC blowing agent;
40～60 parts of active carbonic acid fine particle calcium carbonates.
Described raw material is commercially available.
Preferably:
100 parts of polyvinyl chloride; 4～5 parts of ACR modifier;
12～15 parts of CPE impact modifiers; 12～16 parts of 530 foaming control agents;
4～5 parts of compound lead stabilizers; 1.2～1.5 parts of sliding agents;
0.5～0.6 part of 12～16 parts of AC blowing agent of MBS resin;
48～55 parts of active carbonic acid fine particle calcium carbonates.
Best:
100 parts of polyvinyl chloride; 5 parts of ACR modifier;
12 parts of CPE impact modifiers, 12 parts of 530 foaming control agents;
5 parts of compound lead stabilizers; 1.5 parts of sliding agents;
13 parts of MBS resins; 0.6 part of AC blowing agent;
50 parts of active carbonic acid fine particle calcium carbonates.
The component of described foaming plate also comprises: pigment and/or polyvinyl chloride reclaimed materials.Pigment is as carbon black etc.; Reclaimed materials is the tailing and/or the waste and old material of polyvinyl chloride.
Described cementing agent is by the ratio preparation of PU glue 1kg, PU tackifier 100～150ml, PU high-temperature curing agent 10～40ml.The best proportioning of cementing agent: PU glue 1kg, PU tackifier 120～140ml, PU high-temperature curing agent 20～30ml.
Described sliding agent is one or both the mixing in paraffin or polyethylene (PE) wax.
Described ACR modifier (acrylic acid) adopts ACR401 modifier.
Described CPE impact modifier is the polymer that obtains after the haloflex chlorination.
Described MBS resin is methyl methacrylate, butadiene and cinnamic copolymer.
The preparation method of above-mentioned complex architectural template, this method may further comprise the steps:
(1) batching: get the raw materials ready by said components;
(2) batch mixing: earlier polyvinyl chloride, compound lead stabilizer, ACR modifier, CPE impact modifier, 530 foaming control agents, sliding agent and MBS resin are put into high speed mixer, through high-speed stirred, fully mixing, heat up, treat that temperature rises to 100 ℃, add active carbonic acid fine particle calcium carbonate and AC blowing agent again, through high-speed stirred, fully mixing, heat up, treat that temperature rises to 130 ℃, the heat material is put into cold pot, continue to stir, treat that temperature is cooled to 40 ℃ and emits, make compound;
(3) high-speed molten is extruded: the material that compound is added Bitruder by feeder is extruded the melting grog from foaming mould in trembling; Extrude by following condition:
Extruding machine temperature: 90～120 ℃ of screw rod core oil temperature, main frame negative pressure of vacuum 0.7～0.9kPa, main frame temperature: 175～190 ℃ in a district, 185～200 ℃ in two districts, 185～200 ℃ in three districts, 165～180 ℃ in four districts, 140～155 ℃ of merging core temperature; Extruding machine pressure 22～28MPa;
Foaming mould temperature: 170～180 ℃ in a district, 165～175 ℃ in two districts, 162～172 ℃ in three districts, 160～170 ℃ in four districts, 162～172 ℃ in five districts, 165～175 ℃ in six districts, 170～180 ℃ in seven districts, 130～140 ℃ of die orifices.
(4) Vacuum shaping: will extrude the melting grog and carry out Vacuum shaping, Vacuum shaping mould negative pressure 0.4～0.6MPa, the water cooling typing with 8～15 ℃ of water temperatures promptly gets the foam polyvinyl chloride plate;
(5) cooling: with foam polyvinyl chloride plate water cooling;
(6) cutting: press the specification cutting;
(7) spary cementing agent: spary cementing agent on the foam polyvinyl chloride plate more than two or two;
(8) shop wire lath/glass fabric: after treating the cementing agent drying, the foaming plate of spary cementing agent is put into cold press, wire lath/glass fabrics again tile between two foaming plates;
(9) high temperature heating: the foaming plate that will complete wire lath or glass fabric advances high temperature heater (HTH), heating makes foaming plate surface temperature reach 100～120 ℃ in 1～1.5 minute, withdraw from high temperature heater (HTH), rapidly cold-press moulding (every area 18300mm * 9150mm, pressure are 300～400 tons);
(10) cooling: cooling naturally;
(11) cut edge: cut edge according to specification, get gauze wire cloth enhancing building and touch plate.
Foaming mould adopts the rack-style foaming mould.
Bitruder is the extruding machine of 80 conical double-screws.
The invention has the beneficial effects as follows:
1. mainly be raw material,, be convenient to construction because of adopting its cold and hot contraction of foaming technique little with the polyvinyl chloride.
2. mainly adopt expressing technique production template sheet material, output height, energy consumption are low.
3. when extrusion die sheet material, adopt the technology of sending out bubble, can make the weight reduction of template sheet material, can well guarantee the quality of template again, and make template have sound insulation, insulation effect.
4. the characteristics that can not self bond because of its polyvinyl chloride adopt cementing agent moment cold moudling behind quick high-temp of allotment when bonding, save time and the production efficiency height.
5. wire lath or glass fabric are arranged between the foaming plate more than two or two, make whole template stressed evenly during use, intensity height, good impact resistance.
Through test, the index of this complex architectural template (gauze wire cloth strengthens building and touches plate) sees Table one.
This gauze wire cloth of table one strengthens every index that building is touched plate
| Project name | Index |
| Density/g.cm3 | 0.75～0.85 |
| Vicat softening point/℃ | ≥65 |
The main feature that this gauze wire cloth strengthens construction formwork is to adopt the foam polyvinyl chloride technology, the intensity height, and cold and hot contraction is little, in order to reduce own wt, has adopted foaming technique, reduces its proportion.The proportion of the product that the present invention produces is 0.7～0.8, the proportion basically identical of its proportion and market bamboo glue pattern plate.It is convenient to construction, in order to make template that higher impact resistance be arranged, adopt a kind of special technology in template, to add gauze wire cloth (PVC foaming plate spary cementing agent → shop wire lath → high temperature heating, cold-press moulding), increased its impact resistance and application life so greatly, reduced use cost.This gauze wire cloth strengthens the cost and the existing construction formwork low about 30% that is mainly polyethylene (PE) or polypropylene (PP) of construction formwork.Competitive superiority on market.
Description of drawings
Fig. 1 is a kind of structure (gauze wire cloth strengthens building and touches plate) schematic diagram that composite building of the present invention is touched plate.
Fig. 2 is a kind of technological process of production figure of the present invention.
The specific embodiment
Referring to Fig. 1: it is major ingredient with the polyvinyl chloride that this composite building is touched plate, is provided with wire lath 2 in template 1.Described complex architectural template is major ingredient with the polyvinyl chloride, adopts to extrude little foaming technique, makes PVC foaming plate earlier, and is with cementing agent 3 that the wire lath strong bonded is in aggregates between two or many PVC foaming plates again.
Embodiment one:
The prescription (weight portion) of foaming plate: 100 parts of polyvinyl chloride, 3 parts of plastic modifiers (ACR401), 8 parts of CPE impact modifiers, 13 parts of 530 foaming control agents, 3.5 parts of compound lead stabilizers, 1 part in paraffin or PE wax, 10 parts of MBS resins, 0.5 part of AC blowing agent (Celogen Az), 40 parts of active carbonic acid fine particle calcium carbonates.
The preparation cementing agent: get PU tackifier 120～130ml, PU high-temperature curing agent 20～30ml, PU700W type glue 1kg, blending evenly gets final product.
Referring to Fig. 2, the preparation method of this complex architectural template comprises that step is as follows:
1) batching: get the raw materials ready by above-mentioned prescription.
2) high speed batch mixing: adopt 500 to 1000 high speed mixer, add polyvinyl chloride, compound lead stabilizer, plastic modifier (ACR401), CPE impact modifier, 530 foaming control agents, paraffin (or PE wax) and MBS resin earlier, through high-speed stirred, fully mixing, intensification, treat that temperature rises to 100 ℃, add active carbonic acid fine particle calcium carbonate and AC blowing agent again, through high-speed stirred, fully mixing, intensification, treat that temperature rises to 130 ℃, get grog.
3) cold batch mixing: grog is put into cold pot, continue to stir, treat that temperature is cooled to 40 ℃ and emits, make compound;
4) high-speed molten is extruded: the material that compound is added 80 conical twin-screw extruders by the spring feeder is extruded the melting grog from the rack-style foaming mould in trembling.Extrude by following condition control:
Extruding machine temperature: 100 ℃ ± 2 ℃ of screw rod core oil temperature, main frame negative pressure of vacuum 0.8MPa, main frame temperature: 190 ℃ ± 2 ℃ in a district, 200 ℃ ± 2 ℃ in two districts, 200 ℃ ± 2 ℃ in three districts, 180 ℃ ± 2 ℃ in four districts, 155 ℃ ± 2 ℃ of merging core temperature; Extruding machine pressure 25MPa ± 2MPa.
Foaming mould temperature: 175 ℃ ± 2 ℃ in a district, 170 ℃ ± 2 ℃ in two districts, 168 ℃ ± 2 ℃ in three districts, 168 ± 2 ℃ in four districts, 168 ℃ ± 2 ℃ in five districts, 170 ℃ ± 2 ℃ in six districts, 175 ℃ ± 2 ℃ in seven districts, 135 ℃ ± 2 ℃ of die orifices.
5) Vacuum shaping: will extrude the melting grog, and enter the Vacuum shaping platform after the depanning; Vacuum shaping mould negative pressure 0.4～0.6MPa, with the water cooling typing of 12 ℃ ± 2 ℃ of water temperatures, composite pressure is colded pressing, and makes every area 18300mm * 9150mm, and pressure is 300～400 tons.
6) cooling: with foam polyvinyl chloride plate water cooling.
7) cutting: by required specification cutting;
8) spary cementing agent: the deployed cementing agent of spary on the foam polyvinyl chloride plate more than two or two; Can open or many deployed cementing agents of PVC foaming plate inner surface spary two again.
9) cold pressing: after waiting the cementing agent drying, enter cold press.
10) shop gauze wire cloth: gauze wire cloth on the parallel laid between two or many PVC foaming plate again.
11) high temperature heating: the foaming plate that will complete wire lath advances high temperature heater (HTH), and Fast Heating makes foaming plate surface temperature reach 110 ℃ in 1 minute.
12) cold pressing fast: withdraw from heater fast, rapidly cold-press moulding.
13) cooling: the sheet material of cold-press moulding is cooled off naturally at normal temperature.
Above-mentioned 8～13 steps can not only make gauze wire cloth be compounded in two or many plates bonding and be combined into complete gauze wire cloth PVC and strengthen template, can also make the foaming plate not by the ironed distortion of cold press.
14) cut edge: cut edge according to specification, the gauze wire cloth that gets product strengthens building and touches plate.
15) finished product: the every index that reaches above-mentioned table one through test.
Embodiment two:
The prescription (weight portion) of foaming plate: 100 parts of polyvinyl chloride, 5 parts of ACR plastic modifiers, 14 parts of CPE impact modifiers, 16 parts of 530 foaming control agents, 5 parts of compound lead stabilizers, 1.5 parts of sliding agents, 15 parts of MBS impact modifiers, 0.5 part of AC blowing agent (Celogen Az), 50 parts of active carbonic acid fine particle calcium carbonates.
The preparation cementing agent: get tackifier (PU tackifier) 120～130ml, high-temperature curing agent (PU high-temperature curing agent) 20～30ml, PU700W type glue 1kg, blending is evenly.
The preparation method is identical with embodiment one.
Embodiment three:
100 parts of prescription (weight portion) polyvinyl chloride of foaming plate, 8 parts of plastic modifiers, 17 parts of CPE impact modifiers, 17 parts of 530 foaming control agents, 6 parts of compound lead stabilizers, 1.75 parts of sliding agents, 18 parts of MBS impact modifiers, 0.75 part of Celogen Az, 50 parts of active carbonic acid fine particle calcium carbonates
The preparation cementing agent: get tackifier (the special-purpose tackifier of PU) 120～130ml, high-temperature curing agent (PU special-purpose high temperature curing compound) 20～30ml, PU700W type glue 1kg, blending is evenly.
The preparation method is identical with embodiment one.
Embodiment four:
The prescription (weight portion) of foaming plate: 100 parts of polyvinyl chloride, 5 parts of plastic modifiers (ACR401), 15 parts of CPE impact modifiers, 16 parts of 530 foaming control agents, 5 parts of compound lead stabilizers, 1.5 parts in paraffin or PE wax, 16 parts of MBS resins, 0.5 part of AC blowing agent (Celogen Az), 50 parts of active carbonic acid fine particle calcium carbonates, 40 parts of the crushed materials of PVC tailing, 1 part of carbon black.
The preparation cementing agent: get the about 125～130ml of PU tackifier, the about 25ml of PU high-temperature curing agent, PU700W type glue 1kg, blending is evenly.
What preparation method and embodiment one were different is: 2) high speed batch mixing: adopt 500 to 1000 high speed mixer, the crushed material, compound lead stabilizer, plastic modifier (ACR401), CPE impact modifier, 530 foaming control agents, paraffin (or PE wax) and the MBS resin that add polyvinyl chloride, PVC tailing earlier, through high-speed stirred, fully mixing, intensification, treat that temperature rises to 100 ℃, add active carbonic acid fine particle calcium carbonate and AC blowing agent again, through high-speed stirred, fully mixing, intensification, treat that temperature rises to 130 ℃, get grog.3) cold batch mixing: grog is put into cold pot, add carbon black, continue to stir, treat that temperature is cooled to 40 ℃ and emits, make compound; Other is identical with embodiment one.
The prescription of foaming plate in the foregoing description: sliding agent can be paraffin or PE wax, also can be the mixture of two kinds in paraffin and PE wax.
Claims (10)
1. complex architectural template, be provided with wire lath/glass fabric in this template, it is characterized in that, described template is major ingredient with the polyvinyl chloride, employing is extruded little foaming technique and is made the foam polyvinyl chloride plate, and foaming at two or many is integral wire lath/glass fabric strong bonded by cementing agent between the plates;
The prescription of described foaming plate contains following components in part by weight:
100 parts of polyvinyl chloride; 3～6 parts of ACR modifier;
8～15 parts of CPE impact modifiers, 11～16 parts of 530 foaming control agents;
3.5～6 parts of compound lead stabilizers; 1～2 part of sliding agent;
10～16 parts of MBS resins; 0.35～0.78 part of AC blowing agent;
40～60 parts of active carbonic acid fine particle calcium carbonates.
2. complex architectural template according to claim 1 is characterized in that, the prescription of described foaming plate contains following components in part by weight:
100 parts of polyvinyl chloride; 4～5 parts of ACR modifier;
12～15 parts of CPE impact modifiers; 12～16 parts of 530 foaming control agents;
4～5 parts of compound lead stabilizers; 1.2～1.6 parts of sliding agents;
0.5～0.6 part of 12～16 parts of AC blowing agent of MBS resin;
48～55 parts of active carbonic acid fine particle calcium carbonates.
3. complex architectural template according to claim 1 and 2 is characterized in that, described sliding agent is one or both the mixing in paraffin or the PE wax.
4. complex architectural template according to claim 1 and 2 is characterized in that, ACR modifier is ACR401 modifier.
5. complex architectural template according to claim 1 is characterized in that, described cementing agent is the ratio preparation with PU glue 1kg, PU tackifier 100～150ml, PU high-temperature curing agent 10～40ml.
6. complex architectural template according to claim 1 and 2 is characterized in that, the component of described foaming plate also has pigment and/or polyvinyl chloride reclaimed materials.
7. the preparation method of the described complex architectural template of claim 1, this method may further comprise the steps:
(1) batching: get the raw materials ready by said components;
(2) batch mixing: earlier polyvinyl chloride, compound lead stabilizer, ACR modifier, CPE impact modifier, 530 foaming control agents, sliding agent and MBS resin are put into high speed mixer, through high-speed stirred, fully mixing, heat up, treat that temperature rises to 100 ℃, add active carbonic acid fine particle calcium carbonate and AC blowing agent again, through high-speed stirred, fully mixing, heat up, treat that temperature rises to 130 ℃, the heat material is put into cold pot, continue to stir, treat that temperature is cooled to 40 ℃ and emits, make compound;
(3) high-speed molten is extruded: the material that compound is added Bitruder by feeder is extruded the melting grog from foaming mould in trembling;
(4) Vacuum shaping: will extrude the melting grog and carry out Vacuum shaping, Vacuum shaping mould negative pressure 0.4～0.6MPa, the water cooling typing with 8～15 ℃ of water temperatures promptly gets the foam polyvinyl chloride plate;
(5) cooling: with foam polyvinyl chloride plate water cooling;
(6) cutting: press the specification cutting;
(7) spary cementing agent: spary cementing agent on the foam polyvinyl chloride plate more than two or two;
(8) shop wire lath/glass fabric: after treating the cementing agent drying, the foaming plate of spary cementing agent is put into cold press, again tiling wire lath or glass fabrics between two foaming plates;
(9) high temperature heating: the foaming plate that will complete wire lath/glass fabric advances high temperature heater (HTH), and heating makes foaming plate surface temperature reach 100-120 ℃ in 1-1.5 minute, withdraws from high temperature heater (HTH), rapidly cold-press moulding;
(10) cooling: cooling naturally;
(11) cut edge: cut edge according to specification, get this complex architectural template.
8. the preparation method of complex architectural template according to claim 7 is characterized in that, extrudes in the high-speed molten of step (3), extrudes by following condition:
Extruding machine temperature: 90～120 ℃ of screw rod core oil temperature, main frame negative pressure of vacuum 0.7～0.9MPa, main frame temperature: 175～190 ℃ in a district, 185～200 ℃ in two districts, 185～200 ℃ in three districts, 165～180 ℃ in four districts, 140～155 ℃ of merging core temperature; Extruding machine pressure 22～28MPa;
Foaming mould temperature: 170～180 ℃ in a district, 165～175 ℃ in two districts, 162～172 ℃ in three districts, 160～170 ℃ in four districts, 162～172 ℃ in five districts, 165～175 ℃ in six districts, 170～180 ℃ in seven districts, 130～140 ℃ of die orifices.
9. the preparation method of complex architectural template according to claim 7 is characterized in that, foaming mould adopts the rack-style foaming mould.
10. the preparation method of complex architectural template according to claim 7 is characterized in that, Bitruder is the extruding machine of 80 conical double-screws.
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