CN103806641A - Purpose of nylon/polypropylene alloy serving as matrix resin in building formwork raw material - Google Patents
Purpose of nylon/polypropylene alloy serving as matrix resin in building formwork raw material Download PDFInfo
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Abstract
The invention discloses a purpose of nylon/polypropylene alloy serving as matrix resin in a building formwork raw material. The building formwork raw material is a plastic composition, preferably, the weight ratio of the nylon to the polypropylene ranges from 1:1 to 1:100, and more preferably, the weight ratio of the nylon to the polypropylene is 1:9. The melt index of the polypropylene is larger than or equal to 20 g/10 min, and the melt index of the nylon is larger than or equal to 10 g/10 min. According to the purpose of the nylon/polypropylene alloy serving as the matrix resin in the building formwork raw material, the strength of the formed building formwork is high, the surface of the formed building formwork is not prone to damage, the shock resistance of the building formwork is good, the formwork cannot be fractured or damaged when falling down from the high altitude, cement blocks on the surface of the building formwork in the later construction period can be cleared away easily, and the using efficiency of the building formwork is greatly improved, and the service life of the building formwork is greatly prolonged.
Description
Technical field
The present invention relates to building material field, relate in particular to a kind of nylon/polypropylene alloy and be used as the purposes of matrix resin in construction formwork raw material.
Background technology
Driven the development of constructional materials and Building technology as the development of mainstay of the national economy industry-builing industry, New Building Materials and construction technology continue to bring out.Wherein, construction formwork has also experienced each replacement.Traditional construction formwork adopts timber, steel.Because scarcity and the people of timber resources exit wooden form to the protection of forest gradually.Steel form can meet the needs of building, but steel easy-to-rust, and due to compatibility good between steel and cement, cause steel form demoulding difficulty after construction, and often also to apply before use one deck release agent, make construction sequence more loaded down with trivial details.And the release agent applying often also very easily pollutes reinforcing bar and building surface, or cause quality accident, or bring difficulty to next step building operations.In addition, steel form is in use easily by collision deformation, makes the very out-of-flatness of cement surface that is poured, will again carry out smooth modification with cement toward contact.
People try to adopt the raw materials for production of plastics as construction formwork gradually in recent years.Wherein, polypropylene is as template raw material matrix due to low price, lightweight, good combination property, and it is most widely used.Preparation method and its application on pouring concrete construction formwork of a kind of polypropylene composite material strengthening with mica and glass mat and this material are disclosed in Chinese patent CN1277975A, it is take polypropylene as matrix, the continuous Glass Fiber Mat of processing take the infiltration of process surface or long glass fibres felt are as reinforcing material, take surface treated mica as filler, maleic anhydride inoculated polypropylene is interfacial compatibilizer, prepares a kind of novel high nonbreakable glass fibrofelt and strengthens thermoplastic composite.Chinese patent CN101220708A discloses a kind of construction formwork and injection molding forming method and moulding form of injection mo(u)lding, and construction formwork is formed by glass fiber reinforced polypropylene injection, the reinforcement gusset that it comprises a working panel and is positioned at the working panel back side; On the reinforcement gusset at edge, offer construction formwork connecting through hole, its moulding form, basic identical with existing injection mold structure, be just the concavo-convex sphere cooperatively interacting by the working panel parting Surface Design of described formpiston and former, in this patent, adopt glass fiber reinforced polypropylene injection moulding, the more existing composite material building mould board of its production efficiency is greatly improved, and cost has also obtained reduction simultaneously.But, comprise at present in the process that construction formwork that above-mentioned technology makes uses in reality, there is following defect:
If on the one hand template is from falling in the air or stressed for a long time, template is very easy to occur cracking, breakage;
On the other hand, the case hardness of these templates is lower, and the construction later stage is while removing construction formwork surface water clod, easily by hard thing deface, thereby has a strong impact on application life of this kind of construction formwork.
Summary of the invention
In order to address the above problem, the invention provides a kind of purposes that nylon/polypropylene alloy is used as in construction formwork raw material to matrix resin.
Technical scheme of the present invention is as follows:
The present invention proposes the purposes that a kind of nylon/polypropylene alloy is used as matrix resin in construction formwork raw material.
Described construction formwork raw material is plastics composite.
In nylon/polypropylene alloy, nylon and polypropylene weight ratio are preferably 1:1-1:100, and the ratio being more preferably is 1:9.Under this ratio condition, the performance of alloy material and price all reach optimization.
One or more of the described preferred following material of nylon: nylon 6, nylon 66, nylon 11.
In a large amount of experiments, we find, nylon/polypropylene alloy construction formwork is in the time of moulding, if polypropylene melt index >=20g/10min, the construction formwork surface finish mould filling high, mould of moulding is complete, can guarantee Injection moulded part steady quality each time.Be more preferably, on the basis of polypropylene melt index >=20g/10min, molten polyamide index >=10g/10min.
Construction formwork raw material is generally processed into plastic pellet by matrix resin and additive by extruder blend, and then injection mo(u)lding forms.Additive types comprises one or more of following material: reinforcing agent, filler, coupling agent, compatilizer, antioxidant, sliding agent, ultraviolet-resistant absorbent.In the present invention, reinforcing agent is selected glass fiber, filler is selected French chalk, coupling agent is selected gamma-aminopropyl-triethoxy-silane, compatilizer is selected polypropylene grafted maleic anhydride, sliding agent is selected Ployethylene Wax, antioxidant is selected antioxidant 1010 and irgasfos 168, and ultraviolet-resistant absorbent is selected 2-hydroxyl-4-n-octyloxy-benzophenone.Each additive all adds according to conventional addition.
Compared with prior art, beneficial effect of the present invention is as follows:
The invention provides the purposes that a kind of nylon/polypropylene alloy is used as matrix resin in construction formwork raw material, described construction formwork raw material is plastics composite, described nylon/polypropylene alloy is high as the construction formwork intensity after matrix resin moulding, be difficult for by hard thing deface, shock resistance is good, template high-altitude is dropped not easy to crack, damaged, and construction later stage construction formwork surface water clod is easily eliminated, and has improved greatly service efficiency and the life-span of construction formwork.
Certainly, implement arbitrary product of the present invention and might not need to reach above-described all advantages simultaneously.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be appreciated that, these embodiment are only for the present invention is described, and are not intended to limit the scope of the invention.Technician makes according to the present invention in actual applications improvement and adjustment, still belong to protection scope of the present invention.
In following examples, the standard of Measurement of Material Mechanical Performance is as follows:
The test of hot strength: GB1040/T-1992, plastic tensile method for testing performance, draw speed 5mm/min.
The test of impact strength: semi girder notched Izod impact strength is according to GB/T1843-1996, plastics izodtest method.
The drop test of experiment of high-altitude: the high platform of 4 meters, construction formwork vertically drops in the same way, each piece construction formwork experiment 5 times, each embodiment is one group, tests altogether 20 templates.Every group of damaged template number exceed 3 for defective.
Construction formwork in the time of injection moulding, every group of embodiment injection moulding 50 times, the die cavity of observing mould can not be filled number of times completely.
Embodiment 1
10 parts of nylon 6 (melt index 10 g/10min), 90 parts of polypropylene (melt index 20 g/10min), 80 parts of glass fiber, 20 parts of polypropylene grafted maleic anhydrides, 10 parts of gamma-aminopropyl-triethoxy-silanes, 2 parts of Tissuemat Es, 0.3 part of antioxidant 1010, passes through double screw extruder extruding pelletization after 0.3 part of irgasfos 168 mixes, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 230 ℃ of melt zones, 230 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 150 ℃ of feeding sections, 235 ℃ of melt zones, 235 ℃ of homogenizing zones.
Embodiment 2
1 part of nylon 66 (melt index 15 g/10min), 100 parts of polypropylene (melt index 25g/10min), 60 parts of glass fiber, 3 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, after 1 part of 2-hydroxyl-4-n-octyloxy-benzophenone mixes, by double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 130 ℃ of feeding sections, 220 ℃ of melt zones, 220 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 2 hours, then be injected into construction formwork by injector, injection temperature interval is: 140 ℃ of feeding sections, 220 ℃ of melt zones, 220 ℃ of homogenizing zones.
Embodiment 3
50 parts of nylon 66 (melt index 20g/10min), 50 parts of polypropylene (melt index 30g/10min), 10 parts of glass fiber, 5 parts of gamma-aminopropyl-triethoxy-silanes, 30 parts of polypropylene grafted maleic anhydrides, 0.2 part of antioxidant 1010, after 0.2 part of irgasfos 168 mixes, by double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 160 ℃ of feeding sections, 230 ℃ of melt zones, 230 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 5 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 240 ℃ of melt zones, 240 ℃ of homogenizing zones.
Embodiment 4
30 parts of nylon 66 (melt index 35g/10min), 70 parts of polypropylene (melt index 55g/10min), 20 parts of glass fiber, 15 parts of polypropylene grafted maleic anhydrides, 2 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, after mixing, passes through 0.3 part of 2-hydroxyl-4-n-octyloxy-benzophenone double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 225 ℃ of melt zones, 225 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 230 ℃ of melt zones, 230 ℃ of homogenizing zones.
Embodiment 5
5 parts of nylon 11s (melt index 25g/10min), 95 parts of polypropylene (melt index 80g/10min), 30 parts of glass fiber, 20 parts of polypropylene grafted maleic anhydrides, 15 parts of French chalk, 2 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, after 0.3 part of 2-hydroxyl-4-n-octyloxy-benzophenone mixes, by double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 225 ℃ of melt zones, 225 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 230 ℃ of melt zones, 230 ℃ of homogenizing zones.
Embodiment 6
15 parts of nylon 66 (melt index 35g/10min), 85 parts of polypropylene (melt index 100g/10min), 60 parts of glass fiber, 20 parts of polypropylene grafted maleic anhydrides, 5 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.3 part of irgasfos 168, after mixing, passes through 0.5 part of 2-hydroxyl-4-n-octyloxy-benzophenone double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 235 ℃ of melt zones, 235 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 240 ℃ of melt zones, 240 ℃ of homogenizing zones.
Comparative example 1
100 parts of polypropylene (melt index 20g/10min), 80 parts of glass fiber, 2 parts of Tissuemat Es, 0.3 part of antioxidant 1010, after 0.3 part of irgasfos 168 mixes, by double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 150 ℃ of feeding sections, 210 ℃ of melt zones, 210 ℃ of homogenizing zones.
Comparative example 2
100 parts of polypropylene (melt index 25g/10min), 60 parts of glass fiber, 3 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, passes through double screw extruder extruding pelletization after 1 part of 2-hydroxyl-4-n-octyloxy-benzophenone mixes, obtain construction formwork raw material particle, prilling temperature interval is: 130 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 2 hours, then be injected into construction formwork by injector, injection temperature interval is: 140 ℃ of feeding sections, 210 ℃ of melt zones, 210 ℃ of homogenizing zones.
Comparative example 3
100 parts of polypropylene (melt index 30g/10min), 10 parts of glass fiber, 0.2 part of antioxidant 1010, after mixing, passes through 0.2 part of irgasfos 168 double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 190 ℃ of melt zones, 190 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 5 hours, then be injected into construction formwork by injector, injection temperature interval is: 140 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.
Comparative example 4
100 parts of polypropylene (melt index 55g/10min), 20 parts of glass fiber, 2 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, passes through double screw extruder extruding pelletization after 0.3 part of 2-hydroxyl-4-n-octyloxy-benzophenone mixes, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 190 ℃ of melt zones, 190 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 150 ℃ of feeding sections, 190 ℃ of melt zones, 190 ℃ of homogenizing zones.
Comparative example 5
100 parts of polypropylene (melt index 80g/10min), 30 parts of glass fiber, 15 parts of French chalk, 2 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, after 0.3 part of 2-hydroxyl-4-n-octyloxy-benzophenone mixes, by double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 150 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.
Comparative example 6
100 parts of polypropylene (melt index 100g/10min), 60 parts of glass fiber, 5 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.3 part of irgasfos 168, passes through double screw extruder extruding pelletization after 0.5 part of 2-hydroxyl-4-n-octyloxy-benzophenone mixes, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 150 ℃ of feeding sections, 200 ℃ of melt zones, 200 ℃ of homogenizing zones.
Comparative example 7
15 parts of nylon 66 (melt index 8g/10min), 85 parts of polypropylene (melt index 18g/10min), 60 parts of glass fiber, 20 parts of polypropylene grafted maleic anhydrides, 5 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.3 part of irgasfos 168, after mixing, passes through 0.5 part of 2-hydroxyl-4-n-octyloxy-benzophenone double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 235 ℃ of melt zones, 235 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 240 ℃ of melt zones, 240 ℃ of homogenizing zones.
Comparative example 8
15 parts of nylon 66 (melt index 8g/10min), 85 parts of polypropylene (melt index 20g/10min), 60 parts of glass fiber, 20 parts of polypropylene grafted maleic anhydrides, 5 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.3 part of irgasfos 168, after mixing, passes through 0.5 part of 2-hydroxyl-4-n-octyloxy-benzophenone double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 235 ℃ of melt zones, 235 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 240 ℃ of melt zones, 240 ℃ of homogenizing zones.
Comparative example 9
15 parts of nylon 66 (melt index 10g/10min), 85 parts of polypropylene (melt index 18g/10min), 60 parts of glass fiber, 20 parts of polypropylene grafted maleic anhydrides, 5 parts of Tissuemat Es, 0.2 part of antioxidant 1010,0.3 part of irgasfos 168, after mixing, passes through 0.5 part of 2-hydroxyl-4-n-octyloxy-benzophenone double screw extruder extruding pelletization, obtain construction formwork raw material particle, prilling temperature interval is: 150 ℃ of feeding sections, 235 ℃ of melt zones, 235 ℃ of homogenizing zones.Particle after granulation is first placed in baking oven, and at 80 ℃ dry 3 hours, then be injected into construction formwork by injector, injection temperature interval is: 160 ℃ of feeding sections, 240 ℃ of melt zones, 240 ℃ of homogenizing zones.
The mechanical experimental results of all embodiment and comparative example sees the following form 1 above.
Table 1
Can find out by upper table 1, nylon/polypropylene alloy provided by the invention in construction formwork raw material as the construction formwork after matrix resin moulding, compared with the construction formwork only obtaining as matrix resin with polypropylene, intensity and case hardness are high, be difficult for by hard thing deface, shock resistance is good, and template high-altitude is dropped not easy to crack, damaged, has greatly improved service efficiency and the life-span of construction formwork.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not departing from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (7)
1. a nylon/polypropylene alloy is used as the purposes of matrix resin in construction formwork raw material.
2. nylon/polypropylene alloy as claimed in claim 1 is used as the purposes of matrix resin in construction formwork raw material, it is characterized in that, described construction formwork raw material is plastics composite.
3. nylon/polypropylene alloy as claimed in claim 1 is used as the purposes of matrix resin in construction formwork raw material, it is characterized in that, in described nylon/polypropylene alloy, nylon and polypropylene weight ratio are 1:1-1:100.
4. nylon/polypropylene alloy as claimed in claim 3 is used as the purposes of matrix resin in construction formwork raw material, it is characterized in that, in described nylon/polypropylene alloy, nylon and polypropylene weight ratio are 1:9.
5. nylon/polypropylene alloy as claimed in claim 1 is used as the purposes of matrix resin in construction formwork raw material, it is characterized in that, described nylon is selected from one or more of following material: nylon 6, nylon 66, nylon 11.
6. nylon/the polypropylene alloy as described in as arbitrary in claim 1-5 is used as the purposes of matrix resin in construction formwork raw material, it is characterized in that described polypropylene melt index >=20g/10min.
7. nylon/polypropylene alloy as claimed in claim 6 is used as the purposes of matrix resin in construction formwork raw material, it is characterized in that, described nylon melt index >=10g/10min.
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| CN201210437946.5A CN103806641A (en) | 2012-11-06 | 2012-11-06 | Purpose of nylon/polypropylene alloy serving as matrix resin in building formwork raw material |
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| CN201210437946.5A CN103806641A (en) | 2012-11-06 | 2012-11-06 | Purpose of nylon/polypropylene alloy serving as matrix resin in building formwork raw material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104761888A (en) * | 2015-03-26 | 2015-07-08 | 湖州科达化工燃料有限公司 | Ultra-strong plastic building template and preparation method thereof |
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Application publication date: 20140521 |