CN105332504A - Environment-friendly light building formwork and manufacturing method - Google Patents
Environment-friendly light building formwork and manufacturing method Download PDFInfo
- Publication number
- CN105332504A CN105332504A CN201510847194.3A CN201510847194A CN105332504A CN 105332504 A CN105332504 A CN 105332504A CN 201510847194 A CN201510847194 A CN 201510847194A CN 105332504 A CN105332504 A CN 105332504A
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- Prior art keywords
- construction formwork
- polypropylene
- high melt
- extruded
- layer
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/05—Forming boards or similar elements the form surface being of plastics
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a building formwork. The building formwork is characterized by comprising an overlaid composite body formed by overlaying double-layer composite bodies of B and C by 16-3,000 layers, wherein B is high melt strength polypropylene (HMSPP) foaming materials, and C is homo-polypropylene or calcium carbonate polypropylene. The building formwork has the advantages of being light, high in strength and recoverable, and the use frequency ranges from 100 to 300.
Description
Technical field
The present invention relates to a kind of construction formwork and preparation method.
Background technology
At building field, usually use punching block and wooden model at casting process, there is problems such as being out of shape, overweight, add labour intensity, access times are low, recovery is difficult, water suction is poor.In construction formwork field, plastic building template is a kind of construction formwork not needing timber, steel, and it can be sawed, can bore, can dig, can follow closely, can weld, and has corresponding intensity, can meet the prerequisite functional performance of construction formwork.
Composite plastic building shuttering commercially available at present mainly with thermoplasticity regenerated polyolefins such as polypropylene, polyethylene, polyvinyl chloride for base material, these extrudate densities are greater than 0.90g/cm
3, there is coefficient of thermal expansion and contraction large, easily become fragile during low temperature, not wear-resisting, the easy shortcoming such as aging.Therefore in the process of the development and application of building field, also there are some practical problems, as when being used as wall column formwork, the strength and stiffness of template do not reach requirement, during the large and construction of the coefficient of thermal expansion and contraction of template, electroslag welding easily scorches panel etc., and this just needs the combination property improving construction formwork.
Summary of the invention
The invention provides a kind of lightweight, high strength, recyclable, access times are at the construction formwork of 100-300 time.
The object of the invention is to be realized by following measures:
A kind of construction formwork, is characterized in that comprising: the superimposion body of the two-layer compound body superposition 16-3000 layer of B and C, described B is high melt body strength polypropylene (HMSPP) foamed, and described C is HOPP or calcium carbonate polypropylene.Superposition of the present invention is the physics stratification bonding of B material and C material, and the unordered mixing of chemical reaction and material does not occur.The present invention substantially increases the application performance of material, as mechanical strength, barrier etc.Preferably, the weight ratio of above-mentioned high melt body strength polypropylene and C is (80 ~ 90): (10 ~ 30).
The blowing agent D of above-mentioned high melt body strength polypropylene foamed is AC blowing agent.Its preferable amount is high melt body strength polypropylene: sodium acid carbonate=(80 ~ 90): (3 ~ 8), mass ratio range.
In order to the object such as cover, painted, above-mentioned construction formwork can also comprise A-fiber glass reinforced polypropylene.Further, each component is counted by weight: polypropylene 10-30 part of A fiber glass reinforced polypropylene 5-10 part, high melt body strength polypropylene 80-90 part, C-HOPP or 30% calcium carbonate content, D-blowing agent 3-8 part, E-color masterbatch 1-4 part.
Particularly, above-mentioned material is according to the arrangement mode compound of A-(BC) n-A.Wherein n is the number of plies of BC layer structure; N=16 ~ 3000.
Another object of the present invention is to the preparation method that above-mentioned material is provided.It is realized by following measures:
The preparation method of above-mentioned material, extrudes through mixing plasticizing respectively by B, C, and through being distributed into the double-deck complex of B and C, double-deck complex superposition 16-3000 layer forms superimposion body, and itself and other mixing plasticized extrudate is extruded composite foam material through distributing; Described extrusion temperature controls at 160-280 DEG C.
The preparation method of above-mentioned material, comprises the following steps:
(1) extrude dropping into A extruder after A and color masterbatch mixing through mixing plasticizing respectively, drop into after high melt body strength polypropylene (HMSPP) adds blowing agent in B extruder hopper and extrude through mixing plasticizing, C drops in C extruder hopper and extrudes through mixing plasticizing;
(2) step (1) gained B extruded stock and C extruded stock are divided into the double-deck complex of B, C by distributor, then superpose 16-3000 layer and extrude superimposion body; Superimposion body, A extruded stock, being extruded through distributing by dispenser, forming A, BC, BC through T connector mould ... the composite foam material of A (i.e. A-(BC) n-A, n=16-3000 layer); Wherein extruding processing temperature in step (1) and (2) is 160-250 DEG C, and pressure is 8-1.5Mpa;
(3) obtained the construction formwork of different-thickness, width and expansion ratio by roll-in, traction, cooling, sizing, trimming, leftover pieces reclaim and again utilize.
Beneficial effect
1. material of the present invention has heat insulation, recyclable, insulation, the characteristic such as nontoxic, really achieves the multipurpose characteristic of green, environmental protection.
2. construction formwork lightweight of the present invention, high strength, access times can reach 300 times.
3. material physical property of the present invention, resistance to elevated temperatures excellence.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Described method is conventional method if no special instructions.Described raw material all can obtain from open commercial sources if no special instructions.
Embodiment 1
A kind of construction formwork, each component is counted by weight: A fiber glass reinforced polypropylene 5-10 part, high melt body strength polypropylene 80-90 part, C-HOPP or 30% calcium carbonate polypropylene 10-30 part, D-blowing agent 3-8 part, E-color masterbatch 1-4 part.
Its preparation method is according to the following steps:
(1) respectively A is dropped into A extruder to extrude through mixing plasticizing, drop in B extruder hopper and extrude through mixing plasticizing after high melt body strength polypropylene (HMSPP) adds blowing agent, C drops in C extruder hopper and extrudes through mixing plasticizing;
(2) step (1) gained B extruded stock and C extruded stock are divided into the double-deck complex of B, C by distributor, then enter the superposition layered composite that 16-3000 layer is extruded in stacking machine superposition; Superimposion body, A extruded stock, being extruded through distributing by dispenser, forming A, BC, BC through T connector mould ... A (i.e. A-(BC)
n-A, n=16-3000 layer) foam composite material; Wherein extruding processing temperature in step (1) and (2) is 160-250 DEG C, and pressure is 8-1.5Mpa;
(3) obtained the construction formwork of different-thickness, width and expansion ratio by roll-in, traction, cooling, sizing, trimming, leftover pieces reclaim and again utilize.Product density (0.3-0.65) × 10
3kg/m
3.Coefficient of thermal conductivity coefficient of thermal conductivity [W/ (mK)]=0.1-0.15.
The physical property of this product as shown in Table 1 and Table 2.
Table 1
Table 2
This product surface is smooth, smooth, and without scar, concavo-convex, crackle, impurity etc., uniform color is consistent.
Temperature tolerance is tested: product is positioned over 100 DEG C, after keeping 60min, product bubble-free, slight crack and ruckbildung, continue to be heated to 180 DEG C, keep 90min, size expansion rate 0.1%, fast cooling is to zero degrees celsius (being transferred to rapidly the environment of 0 DEG C) in 10s again, keep 2h, adopt 2mm nail nail on product, without cracking phenomena.Again carry out quantitative measurement, its performance relative to table 1 and table 2 without significant change.
Product long-term (more than 12 months) is placed in 90 DEG C and-30 DEG C of environment respectively or alternately, and its performance is constant.
Corrosion-resistant experiment: the hydrogen chloride being soaked in saturated aqua calcis and 20% respectively, 48h, product is unchanged.
Claims (10)
1. a construction formwork, is characterized in that comprising: the superimposion body of the two-layer compound body superposition 16-3000 layer of B and C, described B is high melt body strength polypropylene (HMSPP) foamed, and described C is HOPP or calcium carbonate polypropylene.
2. construction formwork as claimed in claim 1, the weight ratio of described high melt body strength polypropylene and C is (80 ~ 90): (10 ~ 30).
3. construction formwork as claimed in claim 1 or 2, the calcium carbonate content of calcium carbonate polypropylene is 30wt%.
4. the construction formwork as described in claim 1,2 or 3, the blowing agent D of described high melt body strength polypropylene foamed is AC blowing agent.
5. the construction formwork stated of claim 4, high melt body strength polypropylene: sodium acid carbonate=(80 ~ 90): (3 ~ 8), mass ratio range.
6. construction formwork as claimed in claim 1, can also comprise A-fiber glass reinforced polypropylene.
7. construction formwork as claimed in claim 6, its component comprises: polypropylene 10-30 part of A fiber glass reinforced polypropylene 5-10 part, high melt body strength polypropylene 80-90 part, C-HOPP or 30% calcium carbonate, D-blowing agent 3-8 part, E-color masterbatch 1-4 part, counts by weight.
8. construction formwork as claimed in claim 7, according to A-(BC) the arrangement mode compound of n-A; Wherein n is the double-deck number of plies of BC; N=16 ~ 3000.
9. the preparation method of the construction formwork as described in as arbitrary in claim 1-8, B, C are extruded through mixing plasticizing respectively, through being distributed into the double-deck complex of B and C, double-deck complex superposition 16-3000 layer forms superimposion body, and itself and other mixing plasticized extrudate is extruded composite foam material through distributing; Described extrusion temperature controls at 160-280 DEG C.
10. the preparation method of construction formwork as claimed in claim 9, comprises the following steps:
(1) extrude dropping into A extruder after A and color masterbatch mixing through mixing plasticizing respectively, drop into after high melt body strength polypropylene (HMSPP) adds blowing agent in B extruder hopper and extrude through mixing plasticizing, C drops in C extruder hopper and extrudes through mixing plasticizing;
(2) step (1) gained B extruded stock and C extruded stock are divided into the double-deck complex of B, C by distributor, then superpose 16-3000 layer and extrude superimposion body; Superimposion body, A extruded stock, being extruded through distributing by dispenser, forming A-(BC through T connector mould) composite foam material of n-A, n=16-3000 layer; Wherein extruding processing temperature in step (1) and (2) is 160-250 DEG C, and pressure is 8-1.5Mpa;
(3) construction formwork of different-thickness, width and expansion ratio is obtained by roll-in, traction, cooling, sizing, trimming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847194.3A CN105332504A (en) | 2015-11-26 | 2015-11-26 | Environment-friendly light building formwork and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847194.3A CN105332504A (en) | 2015-11-26 | 2015-11-26 | Environment-friendly light building formwork and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105332504A true CN105332504A (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510847194.3A Pending CN105332504A (en) | 2015-11-26 | 2015-11-26 | Environment-friendly light building formwork and manufacturing method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050004244A1 (en) * | 2003-06-25 | 2005-01-06 | Sumitomo Chemical Company, Limited | Propylene-based resin foamed sheet and container made from the same |
| US20090263645A1 (en) * | 2006-07-14 | 2009-10-22 | Dow Global Technologies Inc. | Anisotropic Foam-Film Composite Structures |
| CN102127964A (en) * | 2011-01-05 | 2011-07-20 | 江苏奇一科技有限公司 | Building template reinforced by composite of continuous fiber plastic coated belt material and preparation method thereof |
| CN103624993A (en) * | 2012-08-29 | 2014-03-12 | 辽宁辽杰科技有限公司 | Building template and preparation method therefor |
| CN103758340A (en) * | 2014-02-20 | 2014-04-30 | 东北林业大学 | Wood plastic composite material cladding plywood formwork and manufacturing method thereof |
| CN104005554A (en) * | 2013-02-27 | 2014-08-27 | 上海杰事杰新材料(集团)股份有限公司 | Composite construction framework and production method thereof |
-
2015
- 2015-11-26 CN CN201510847194.3A patent/CN105332504A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050004244A1 (en) * | 2003-06-25 | 2005-01-06 | Sumitomo Chemical Company, Limited | Propylene-based resin foamed sheet and container made from the same |
| US20090263645A1 (en) * | 2006-07-14 | 2009-10-22 | Dow Global Technologies Inc. | Anisotropic Foam-Film Composite Structures |
| CN102127964A (en) * | 2011-01-05 | 2011-07-20 | 江苏奇一科技有限公司 | Building template reinforced by composite of continuous fiber plastic coated belt material and preparation method thereof |
| CN103624993A (en) * | 2012-08-29 | 2014-03-12 | 辽宁辽杰科技有限公司 | Building template and preparation method therefor |
| CN104005554A (en) * | 2013-02-27 | 2014-08-27 | 上海杰事杰新材料(集团)股份有限公司 | Composite construction framework and production method thereof |
| CN103758340A (en) * | 2014-02-20 | 2014-04-30 | 东北林业大学 | Wood plastic composite material cladding plywood formwork and manufacturing method thereof |
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Application publication date: 20160217 |
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