CN103289186A - In-mould forming mould plate as well as preparation method and uses thereof - Google Patents
In-mould forming mould plate as well as preparation method and uses thereof Download PDFInfo
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- CN103289186A CN103289186A CN2012100476199A CN201210047619A CN103289186A CN 103289186 A CN103289186 A CN 103289186A CN 2012100476199 A CN2012100476199 A CN 2012100476199A CN 201210047619 A CN201210047619 A CN 201210047619A CN 103289186 A CN103289186 A CN 103289186A
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Abstract
The invention discloses an in-mould forming mould plate. The in-mould forming mould plate is prepared from the following components in parts by weight: 20-40 parts of multi-glass fiber mesh of presoaked polypropylene and 40-80 parts of glass fiber reinforced polypropylene material. The invention further discloses a preparation method and uses of the in-mould forming mould plate. With the adoption of a reinforced plastic mould plate of the multi-glass fiber mesh of presoaked polypropylene, in-mould injection moulding is performed so as to ensure that the glass fiber mesh is sufficiently wrapped by a polypropylene base body; compared with the existing plastic mould plate, the tensile strength, the hardness and the rigidity of the in-mould forming mould plate are high; and the in-mould forming mould plate is not easy to deform and damage during the casting process, and has the characteristic of being low in cost, light in weight, good in mechanical property and long in service life.
Description
Technical field
The present invention relates to the building template technical field, relate in particular to a kind of in-molded template and its production and use.
Background technology
The building template that adopts in building construction process at present is most to be wooden form and Sheet Steel Form, but both are Nonrenewable resources.Wooden form is in light weight, breadth is wide, piece is few, but its intensity is relatively low, and is non-watertight, and it is rotten easily to go mouldy, and it is few to reuse number of times, mass consumption green resource, and wooden form need brush releasing agent when using, comparatively trouble.Though and Sheet Steel Form is firm, multiplicity is many, and the cost height, weight is big, breadth is narrow, piece is many, and the construction transportation is inconvenient, easily gets rusty, and need carry out rotproofing, later maintenance expense height.Therefore wooden form and Sheet Steel Form are progressively substituted by the template that plastics are made now.Plastic mould is in light weight, and is often reusable, but common plastic mould intensity, hardness, rigidity is not enough on the market, and yielding in the process of building, cracky, easily aging need just can reach construction requirement with methods such as encrypting flitch.
At present to plastic mould strengthen research more be to adopt glass fibre that plastic basis material is strengthened.Chinese patent CN201902013U discloses a kind of plastic building template, be followed successively by PP plastic surface layer, glass fibre stratum reticulare, PP plastics sandwich layer, glass fibre stratum reticulare, PP plastic surface layer from top to bottom, the mutual adhesion of cast layer that each layer forms by the curtain coating mode is compound to be one.This product improved resistance intensity and the holding capacity of template, but this product number of plies is too many owing to increased by 2 layers of glass fiber mesh, the complete processing complexity, and it is adhered to one another to only depend on cast layer, and the cohesive force between each layer is not enough, layering easily, poor dimensional stability.
Chinese patent CN1127539C discloses a kind of mica and glass felt enhanced polypropylene matrix material and this preparation methods and the application on the concrete depositing building template, be matrix with the polypropylene, continuous Glass Fiber Mat or the long glass fibres felt handled with the process surface infiltration are strongthener, be filler with surface treated mica, maleic anhydride inoculated polypropylene is interfacial compatibilizer, prepares a kind of novel high rigid polypropylene matrix material.This material can be made into the large-sized concrete cast template by die press technology for forming, and the rigidity of template and dimensional stability can satisfy service requirements.But the compression molding step is more, complex manufacturing, and efficient is relatively poor, and dimensional accuracy of products is not high, and the working face slickness of mold pressing is relatively poor, has influence on concrete stripping result.
Chinese patent CN201007083Y discloses a kind of building template of injection moulding, is formed by the glass filament reinforced plastics injection, and this template comprises a working face and is positioned at the reinforcement gusset at the working face back side.Owing to adopt the injection moulding process moulding, production efficiency is higher, cost is lower, it is better to strengthen back intensity by stiffening web, though this method increases to some extent than the product strength of the direct injection moulding of common plastics, but owing to do support without any skeleton in the middle of the product, mechanical strength can't further improve in the injection moulding process of glass filament reinforced plastics.
Summary of the invention
The present invention provides a kind of directly in high glass filament reinforced plastics template of in-mould injection moulding and mechanical strength and its production and use in order to solve the problem that above-mentioned prior art exists.
Purpose of the present invention is achieved through the following technical solutions:
A kind of in-molded template, made by the component that comprises following parts by weight:
The polyacrylic multiple glazing fibrous reticulum of preimpregnation 20-40 part,
Glass fiber reinforced polypropylene material 40-80 part.
Preferably, the polyacrylic multiple glazing fibrous reticulum of described preimpregnation is multilayer continuous long glass fiber net Reinforced Polypropylene preimpregnation band, and every layer thickness is 0.2-0.4mm, and content of glass fiber accounts for the 30-50% of overall weight.
Preferably, described glass fiber reinforced polypropylene material is made by the component that comprises following parts by weight:
Polypropylene 30-65 part,
Glass fibre 25-45 part,
Compatilizer 7-10 part,
Coupling agent 2-3 part,
Oxidation inhibitor 0.5-1 part,
The steady agent 0.5-1 of light part.
Preferably, described glass fibre is long glass fibres, and the glass diameter is 15-25 μ m, and glass length is 5-35mm;
Preferably, described compatilizer is maleic anhydride inoculated polypropylene;
Preferably, described coupling agent is silane coupling agent;
Preferably, described oxidation inhibitor is made up of primary antioxidant and auxiliary anti-oxidant, and described primary antioxidant is selected from one or more in hindered phenol or the thioesters kind antioxidant, and described auxiliary anti-oxidant is selected from one or more in phosphite or the phosphite ester kind antioxidant;
Preferably, the steady agent of described light is hindered amine light stabilizer.
Preferably, the preferred glass diameter of described glass fibre is 18-20 μ m, and glass length is 10-15mm;
Preferably, the preferred antioxidant 1010 of described primary antioxidant, one or both in the preferred oxidation inhibitor 618 of described auxiliary anti-oxidant or the oxidation inhibitor 168;
Preferably, the steady agent preferred light of described light stablizer 3346 and photostabilizer 3853S are by weight the composite photostabilizer that obtains of 1:1.
A kind of preparation method of in-molded template, use the in-mould injection forming technique, the polyacrylic multiple glazing fibrous reticulum of preimpregnation is put into mould cavity, matched moulds is injected into glass fiber reinforced polypropylene material then, after pressurize and process of cooling, formation is strongthener with glass fiber mesh and long glass fibres, is the template of matrix with coupling agent modified polypropylene.
Preferably, the preparation method of this in-molded template specifically may further comprise the steps:
(1) the polyacrylic multiple glazing fibrous reticulum of preimpregnation is cut to the product design size, heating is 10-20 minute in baking oven;
(2) the polyacrylic multiple glazing fibrous reticulum of preimpregnation after will heating is put into the injection mold die cavity and is touched die cavity, and the exhaust piece is set on the injection mold die cavity, opens negative pressure and vacuumizes, and it is fixing that the polyacrylic multiple glazing fibrous reticulum of preimpregnation is close on the mould;
(3) be injected into glass fiber reinforced polypropylene material: in advance glass glass 25-45 part, coupling agent 2-3 part are added the high pot that mixes and stirred 3-5 minute, add polypropylene 30-65 part, compatilizer 7-10 part, oxidation inhibitor 0.5-1 part, the steady agent 0.5-1 of light part again, continue to stir 5-10 minute, the material that mixes is added injection moulding machine, matched moulds is injected into mould, eject through die sinking after pressurize and the process of cooling, obtain the template finished product.
Preferably, even distribution 6-18 exhaust piece on the die cavity of described step (2) injection mold, the spacing of exhaust piece is 30-60mm, the specification of each exhaust piece is the rectangular parallelepiped of 50mm * 100mm;
Some air discharge ducts of even distribute dark 0.04mm, wide 10mm on the described exhaust piece, the spacing of air discharge duct is 10-20mm.
Preferably, oven temperature is 75-85 ℃ in the described step (1), preferred 80 ℃;
Preferably, the vacuum tightness that negative pressure vacuumizes in the described step (2) for-0.2MPa to-0.8MPa;
Preferably, injection temperature is 200-235 ℃ in the described step (3), and injection pressure is 60-130MPa, and injection moulding speed is 30-90V, and injection time is 18-25S, and pressurize speed is 20-45V, and dwell pressure is 55-85MPa, and the dwell time is 1-2S.
The present invention comprises that also a kind of in-molded template is in the application of building field as the building template of casting concrete.
Compared with prior art, the present invention has following beneficial effect:
1, in-molded template of the present invention is direct glass filament reinforced plastics template in the in-mould injection moulding, and density is littler than Sheet Steel Form, and is in light weight with volume, the operating efficiency height.
2, in-molded template of the present invention can be reused, and compares with Sheet Steel Form with wooden form, can recycle.
3, the present invention adopts the polyacrylic multiple glazing fibrous reticulum of preimpregnation reinforced plastics template, tensile strength, hardness, rigidity height than existing plastic mould, not yielding, damaged in the process of building, have that cost is low, in light weight, mechanical property is good, the characteristics of long service life.
4, the present invention adopts the polyacrylic multiple glazing fibrous reticulum of preimpregnation reinforced plastics template, in the in-mould injection moulding, guarantees that polypropylene matrix fully wraps up glass fiber mesh.
5, the present invention adopts multilayer continuous long glass fiber net, and the template of in-mould injection moulding " band steel in gentle " improves tensile strength.
6, the present invention adopts in-molded technology, by the die cavity at injection mold the exhaust piece is set, offer the air discharge duct that vacuumizes, when putting into the polyacrylic multiple glazing fibrous reticulum of preimpregnation, vacuumize by air discharge duct and to allow the polyacrylic multiple glazing fibrous reticulum of preimpregnation be close on the mould, thereby avoided glass fiber mesh in injection moulding process, to be offset, glass fiber mesh can be evenly distributed on the product face as skeleton, and the degree of depth of air discharge duct is 0.04mm, because the gas molecule diameter less than 0.04 and polymer greater than 0.04, so can discharge gas smoothly can't result in blockage, thermoplastics is decomposed the gaseous impurities that produces discharge under High Temperature High Pressure, thereby The comprehensive performance is improved.
7, the present invention passes through repetition test, determined the technical matters of in-molded technology, specifically comprised, the setting of exhaust piece on the die cavity of injection mold, the selection of air discharge duct size, the length of glass fibre, the processing temperature during injection moulding, injection pressure, dwell time etc., accomplish to make the polyacrylic multiple glazing fibrous reticulum of preimpregnation to be fixed on the die cavity preferably, and be not subjected to displacement in the injection moulding process, under injection temperature and pressure, can combine together fully with glass fiber reinforced polypropylene material.
Description of drawings
Fig. 1 is the synoptic diagram of the polyacrylic multiple glazing fibrous reticulum of preimpregnation location;
Fig. 2 is the injection molding synoptic diagram of template;
Fig. 3 ejects the synoptic diagram of template finished product for die sinking;
Fig. 4 is the structural representation of template finished product working face;
Fig. 5 is the position view of exhaust piece on mould;
Fig. 6 is the right view of Fig. 5;
Fig. 7 is the structural representation of exhaust piece.
Wherein: 1 is die, and 2 are the polyacrylic multiple glazing fibrous reticulum of preimpregnation, and 3 is punch, and 4 is mould cavity, and 5 is the injection moulding machine head, and 6 is push rod, and 7 is the glass fiber reinforced polypropylene material injection molding plates, and 8 is the template finished product; 11 is air discharge duct, and 12 is the hollow exhaust chest, and 13 for vacuumizing interface, and 14 is injection mold, and 15 are the holding screw of exhaust piece, and 16 are the exhaust piece.
Embodiment
Describe the present invention in detail below in conjunction with each embodiment.
The injection moulding template is used for the construction engineering casting concrete, and the working face of template is the plane, and the back is provided with stiffening web.
The polyacrylic multi-layer fiber fibrous reticulum of surperficial preimpregnation that the polyacrylic multiple glazing fibrous reticulum of preimpregnation uses Liaoning Jieshijie New Materials Co., Ltd to produce, thickness is 0.4mm, content of glass fiber is 30% of overall weight.
Preparation process is as follows, referring to the template moulding process shown in Fig. 1-3:
(1) the polyacrylic multi-layer fiber fibrous reticulum 2 of surperficial preimpregnation is cut to the die shape size, heating is 10 minutes in baking oven, and oven temperature is 75 ℃;
(2) template mold comprises die 1 and punch 3, the polyacrylic multiple glazing fibrous reticulum 2 of surperficial preimpregnation after the heating is put into die 1, the die cavity 4 of being close to injection mold, be evenly distributed with the exhaust piece on the die cavity, when the polyacrylic multiple glazing fibrous reticulum 2 of surperficial preimpregnation touch the die cavity 4 of die 1, the unlatching negative pressure vacuumizes, and it is fixing to make the polyacrylic multiple glazing fibrous reticulum 2 of surperficial preimpregnation be close to die 1, and the vacuum tightness that negative pressure vacuumizes is-0.2MPa;
(3) with die 1 and punch 3 matched moulds, be injected into glass fiber reinforced polypropylene material by injection moulding machine head 5: in advance 25 parts in glass fibre, coupling agent are added the high pot that mixes for 2 parts and stirred 3 minutes, add 30 parts of polypropylene, 7 parts of compatilizers, 0.5 part in oxidation inhibitor again, photostabilizer continues for 0.5 part to stir 5 minutes.Glass fiber diameter is 15 μ m, and glass length is 12mm; Compatilizer is maleic anhydride inoculated polypropylene; Coupling agent is silane coupling agent; Oxidation inhibitor is that antioxidant 1010 and oxidation inhibitor 618 are formed by weight 2:1; The steady agent of light is hindered amine light stabilizer.
Add man-hour, the material that stirs according to above-mentioned prescription is in advance added injection moulding machine, die 1 and punch 3 matched moulds, by head 5 material is injected into mould, polypropylene matrix fully wraps up glass fiber mesh 2, obtain the template that glass fiber reinforced polypropylene material injection molding plates 7 and glass fiber mesh 2 are combined closely, eject and obtain template finished product 8 through die sinking after pressurize and the process of cooling, push rod 6.Injection temperature is 200-235 ℃, and injection pressure is 60MPa, and injection moulding speed is 90V, and injection time is 25S, and pressurize speed is 45V, and dwell pressure is 55MPa, and the dwell time is 1S.
Weight ratio according to the fibroreticulate number of plies control polyacrylic multiple glazing fibrous reticulum of preimpregnation of the polyacrylic multiple glazing of placing of preimpregnation and glass fiber reinforced polypropylene material, in the present embodiment, the fibroreticulate weight part of the control polyacrylic multiple glazing of preimpregnation is 20 parts, and the weight part of glass fiber reinforced polypropylene material is 40 parts.
This template finished product 8 comprises glass fiber reinforced polypropylene material injection molding plates 7 and the polyacrylic multiple glazing fibrous reticulum 2 of preimpregnation of combining closely, as shown in Figure 4, the working face of template attaches the polyacrylic multiple glazing fibrous reticulum 2 of preimpregnation, can effectively improve intensity, hardness and the rigidity of formwork integral.
In the present embodiment, shown in Fig. 5,6, be evenly distributed with 6 exhaust pieces 16 on the die cavity of injection mold (die) 14, exhaust piece 16 is fixed on the mould 14 by holding screw 15, spacing between the exhaust piece is 60mm, and each exhaust block specifications is the rectangular parallelepiped of 50mm * 100mm.Be uniform-distribution with a plurality of air discharge ducts 11 of dark 0.04mm, wide 10mm on the exhaust piece 16, spacing is 10mm between the air discharge duct 11, sees Fig. 7.In exhaust piece 16 inside hollow exhaust chest 12 is set, hollow exhaust chest 12 UNICOM's air discharge ducts 11, hollow exhaust chest 12 are provided with and vacuumize interface 13, vacuumize the gas that can discharge in the die cavity by vacuumizing interface 13.
The working face of product is the plane in the injection mold, and the back does not have stiffening web, and product processes and is the rectangular parallelepiped flat board.Template is used for the construction engineering casting concrete.
The polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation that preimpregnation polyacrylic multiple glazing fibrous reticulum in surface uses Liaoning Jieshijie New Materials Co., Ltd to produce, thickness is 0.2mm, content of glass fiber is 50% of overall weight.
(1) the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation is cut to the product design size, heating is 20 minutes in baking oven, and oven temperature is 80 ℃;
(2) the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation after will heating is put into die cavity, the die cavity of being close to injection mold, be evenly distributed with the exhaust piece on the die cavity, when the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation touch die cavity, the unlatching negative pressure vacuumizes, it is fixing that the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation is close on the mould, and the vacuum tightness that negative pressure vacuumizes is-0.8MPa;
(3) be injected into glass fiber reinforced polypropylene material: in advance 45 parts in glass fibre, coupling agent are added the high pot that mixes for 3 parts and stirred 5 minutes, add 65 parts of polypropylene, 10 parts of compatilizers, 1 part in oxidation inhibitor again, photostabilizer continues for 1 part to stir 5 minutes.Described glass fiber diameter is 18 μ m, and glass length is 35mm; Compatilizer is maleic anhydride inoculated polypropylene; Coupling agent is silane coupling agent; Oxidation inhibitor is that antioxidant 1010 and oxidation inhibitor 168 are formed by weight 2.5:1; The steady agent of light is that photostabilizer 3346 and photostabilizer 3853S obtain by weight 1:1 is composite.
Add man-hour, the material that stirs according to above-mentioned prescription is in advance added injection moulding machine, matched moulds is injected into mould, ejects through die sinking after pressurize and the process of cooling, obtains the template finished product.Injection temperature is 200-235 ℃, and injection pressure is 130MPa, and injection moulding speed is 30V, and injection time is 18S, and pressurize speed is 20V, and dwell pressure is 85MPa, and the dwell time is 2S.
Weight ratio according to the fibroreticulate number of plies control polyacrylic multiple glazing fibrous reticulum of preimpregnation of the polyacrylic multiple glazing of placing of preimpregnation and glass fiber reinforced polypropylene material, in the present embodiment, the fibroreticulate weight part of the control polyacrylic multiple glazing of preimpregnation is 20 parts, and the weight part of glass fiber reinforced polypropylene material is 80 parts.
Wherein, even 18 exhaust pieces that distribute on the die cavity of injection mold, the spacing between the exhaust piece is 30mm, each exhaust block specifications is the rectangular parallelepiped of 50mm * 100mm, be uniform-distribution with the air discharge duct of dark 0.04mm, wide 10mm on the exhaust piece, spacing is 15mm between each air discharge duct.
The front of product is circular arc in the injection mold, and the back does not have stiffening web, and template is used for the construction engineering casting concrete.
The polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation that preimpregnation polyacrylic multiple glazing fibrous reticulum in surface uses Liaoning Jieshijie New Materials Co., Ltd to produce, thickness is 0.3mm, content of glass fiber is 50% of overall weight.
(1) the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation is cut to the product design size, heating is 15 minutes in baking oven, and oven temperature is 85 ℃;
(2) the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation after will heating is put into die cavity, the die cavity of being close to injection mold, be evenly distributed with the exhaust piece on the die cavity, when the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation touch die cavity, the unlatching negative pressure vacuumizes, it is fixing that the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation is close on the mould, and the vacuum tightness that negative pressure vacuumizes is-0.6MPa;
(3) be injected into glass fiber reinforced polypropylene material: in advance 35 parts in glass fibre, coupling agent are added the high pot that mixes for 2.5 parts and stirred 5 minutes, add 45 parts of polypropylene, 8.5 parts of compatilizers, 0.8 part in oxidation inhibitor again, photostabilizer continues for 0.7 part to stir 8 minutes.Described glass fiber diameter is 25 μ m, and glass length is 5mm; Compatilizer is maleic anhydride inoculated polypropylene; Coupling agent is silane coupling agent; Oxidation inhibitor is that antioxidant 1010 and oxidation inhibitor 618 are formed by weight 1:1; The steady agent of light is that photostabilizer 3346 and photostabilizer 3853S obtain by weight 1:1 is composite.
Add man-hour, the material that stirs according to above-mentioned prescription is in advance added injection moulding machine, matched moulds is injected into mould, ejects through die sinking after pressurize and the process of cooling, obtains the template finished product.Injection temperature is 200-235 ℃, and injection pressure is 120MPa, and injection moulding speed is 60V, and injection time is 20S, and pressurize speed is 30V, and dwell pressure is 75MPa, and the dwell time is 2S.
Weight ratio according to the fibroreticulate number of plies control polyacrylic multiple glazing fibrous reticulum of preimpregnation of the polyacrylic multiple glazing of placing of preimpregnation and glass fiber reinforced polypropylene material, in the present embodiment, the fibroreticulate weight part of the control polyacrylic multiple glazing of preimpregnation is 40 parts, and the weight part of glass fiber reinforced polypropylene material is 80 parts.
Wherein, even 12 exhaust pieces that distribute on the die cavity of described injection mold, the spacing between the exhaust piece is 45mm, each exhaust block specifications is the rectangular parallelepiped of 50mm * 100mm, be uniform-distribution with the air discharge duct of dark 0.04mm, wide 10mm on the exhaust piece, spacing is 20mm between each air discharge duct.
The front of product is circular arc in the injection mold, and the back does not have stiffening web, and described template is used for the construction engineering casting concrete.
The polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation that preimpregnation polyacrylic multiple glazing fibrous reticulum in surface uses Liaoning Jieshijie New Materials Co., Ltd to produce, thickness is 0.2mm, content of glass fiber is 40% of overall weight.
(1) the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation is cut to the product design size, heating is 15 minutes in baking oven, and oven temperature is 85 ℃;
(2) the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation after will heating is put into die cavity, the die cavity of being close to injection mold, be evenly distributed with the exhaust piece on the die cavity, when the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation touch die cavity, the unlatching negative pressure vacuumizes, it is fixing that the polyacrylic multiple glazing fibrous reticulum of surperficial preimpregnation is close on the mould, and the vacuum tightness that negative pressure vacuumizes is-0.6MPa;
(3) be injected into glass fiber reinforced polypropylene material: in advance 37 parts in glass fibre, coupling agent are added the high pot that mixes for 2.2 parts and stirred 5 minutes, add 53 parts of polypropylene, 8 parts of compatilizers, 0.6 part in oxidation inhibitor again, photostabilizer continues for 0.8 part to stir 10 minutes.Described glass fiber diameter is 20 μ m, and glass length is 15mm; Compatilizer is maleic anhydride inoculated polypropylene; Coupling agent is silane coupling agent; Oxidation inhibitor is that antioxidant 1010 and oxidation inhibitor 618 are formed by weight 2:1; The steady agent of light is that photostabilizer 3346 and photostabilizer 3853S obtain by weight 1:1 is composite.
Add man-hour, the material that stirs according to above-mentioned prescription is in advance added injection moulding machine, matched moulds is injected into mould, ejects through die sinking after pressurize and the process of cooling, obtains the template finished product.Injection temperature is 200-235 ℃, and injection pressure is 120MPa, and injection moulding speed is 60V, and injection time is 20S, and pressurize speed is 30V, and dwell pressure is 75MPa, and the dwell time is 2S.
Weight ratio according to the fibroreticulate number of plies control polyacrylic multiple glazing fibrous reticulum of preimpregnation of the polyacrylic multiple glazing of placing of preimpregnation and glass fiber reinforced polypropylene material, in the present embodiment, the fibroreticulate weight part of the control polyacrylic multiple glazing of preimpregnation is 35 parts, and the weight part of glass fiber reinforced polypropylene material is 65 parts.
Wherein, even 8 exhaust pieces that distribute on the die cavity of described injection mold, the spacing between the exhaust piece is 45mm, each exhaust block specifications is the rectangular parallelepiped of 50mm * 100mm, be uniform-distribution with the air discharge duct of dark 0.04mm, wide 10mm on the exhaust piece, spacing is 20mm between each air discharge duct.
The template finished product that embodiment 1-4 is made carries out Mechanics Performance Testing according to national standard, and test result sees Table 1.
Table 1
More than disclosed only be several specific embodiments of the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (10)
1. an in-molded template is characterized in that, is made by the component that comprises following parts by weight:
The polyacrylic multiple glazing fibrous reticulum of preimpregnation 20-40 part,
Glass fiber reinforced polypropylene material 40-80 part.
2. in-molded template as claimed in claim 1, it is characterized in that, the polyacrylic multiple glazing fibrous reticulum of described preimpregnation is multilayer continuous long glass fiber net Reinforced Polypropylene preimpregnation band, and every layer thickness is 0.2-0.4mm, and content of glass fiber accounts for the 30-50% of overall weight.
3. in-molded template as claimed in claim 1 is characterized in that, described glass fiber reinforced polypropylene material is made by the component that comprises following parts by weight:
Polypropylene 30-65 part,
Glass fibre 25-45 part,
Compatilizer 7-10 part,
Coupling agent 2-3 part,
Oxidation inhibitor 0.5-1 part,
The steady agent 0.5-1 of light part.
4. in-molded template as claimed in claim 3 is characterized in that, described glass fibre is long glass fibres, and the glass diameter is 15-25 μ m, and glass length is 5-35mm;
Described compatilizer is maleic anhydride inoculated polypropylene;
Described coupling agent is silane coupling agent;
Described oxidation inhibitor is made up of primary antioxidant and auxiliary anti-oxidant, and described primary antioxidant is selected from one or more in hindered phenol or the thioesters kind antioxidant, and described auxiliary anti-oxidant is selected from one or more in phosphite or the phosphite ester kind antioxidant;
The steady agent of described light is hindered amine light stabilizer.
5. in-molded template as claimed in claim 4 is characterized in that, the preferred glass diameter of described glass fibre is 18-20 μ m, and glass length is 10-15mm;
The preferred antioxidant 1010 of described primary antioxidant, one or both in the preferred oxidation inhibitor 618 of described auxiliary anti-oxidant or the oxidation inhibitor 168;
The steady agent preferred light of described light stablizer 3346 and photostabilizer 3853S are by weight the composite photostabilizer that obtains of 1:1.
6. preparation method as each described in-molded template among the claim 1-5, it is characterized in that, use the in-mould injection forming technique, the polyacrylic multiple glazing fibrous reticulum of preimpregnation is put into mould cavity, matched moulds is injected into glass fiber reinforced polypropylene material then, after pressurize and process of cooling, forming with glass fiber mesh and long glass fibres is strongthener, is the template of matrix with coupling agent modified polypropylene.
7. the preparation method of in-molded template as claimed in claim 6 is characterized in that, specifically may further comprise the steps:
(1) the polyacrylic multiple glazing fibrous reticulum of preimpregnation is cut to the product design size, heating is 10-20 minute in baking oven;
(2) the polyacrylic multiple glazing fibrous reticulum of preimpregnation after will heating is put into the injection mold die cavity and is touched die cavity, and the exhaust piece is set on the injection mold die cavity, opens negative pressure and vacuumizes, and it is fixing that the polyacrylic multiple glazing fibrous reticulum of preimpregnation is close on the mould;
(3) be injected into glass fiber reinforced polypropylene material: in advance glass glass 25-45 part, coupling agent 2-3 part are added the high pot that mixes and stirred 3-5 minute, add polypropylene 30-65 part, compatilizer 7-10 part, oxidation inhibitor 0.5-1 part, the steady agent 0.5-1 of light part again, continue to stir 5-10 minute, the material that mixes is added injection moulding machine, matched moulds is injected into mould, eject through die sinking after pressurize and the process of cooling, obtain the template finished product.
8. the preparation method of in-molded template as claimed in claim 7, it is characterized in that, even distribution 6-18 exhaust piece on the die cavity of described step (2) injection mold, the spacing of exhaust piece is 30-60mm, the specification of each exhaust piece is the rectangular parallelepiped of 50mm * 100mm;
Some air discharge ducts of even distribute dark 0.04mm, wide 10mm on the described exhaust piece, the spacing of air discharge duct is 10-20mm.
9. the preparation method of in-molded template as claimed in claim 7 is characterized in that, oven temperature is 75-85 ℃ in the described step (1), preferred 80 ℃;
The vacuum tightness that negative pressure vacuumizes in the described step (2) for-0.2MPa to-0.8MPa;
Injection temperature is 200-235 ℃ in the described step (3), and injection pressure is 60-130MPa, and injection moulding speed is 30-90V, and injection time is 18-25S, and pressurize speed is 20-45V, and dwell pressure is 55-85MPa, and the dwell time is 1-2S.
10. an in-molded template is in the application of building field as the building template of casting concrete.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107825643A (en) * | 2017-11-23 | 2018-03-23 | 宁波伯骏智能科技有限公司 | A kind of production system of fibre reinforced composites product |
| CN107901516A (en) * | 2017-11-23 | 2018-04-13 | 宁波伯骏智能科技有限公司 | A kind of fibre reinforced composites product |
| CN108219274A (en) * | 2017-12-28 | 2018-06-29 | 浙江华江科技股份有限公司 | A kind of automobile door internal decoration substrate composites and preparation method thereof |
| EP3363773A1 (en) * | 2017-02-17 | 2018-08-22 | Trinseo Europe GmbH | Fibrous sheets coated with polyolefin compositions and methods of preparation |
| CN108467549A (en) * | 2018-03-29 | 2018-08-31 | 平顶山学院 | A kind of Electric insulation material and preparation method thereof that high temperature resistant is anti-aging |
| CN108908843A (en) * | 2018-07-24 | 2018-11-30 | 宁波华翔汽车技术有限公司 | Automobile plastic air filter support and manufacturing method thereof |
| CN115071043A (en) * | 2022-06-16 | 2022-09-20 | 中国十七冶集团有限公司 | Large-batch plastic surface fiber reinforced production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104260300A (en) * | 2014-09-29 | 2015-01-07 | 重庆开确科技有限公司 | Electric heating wire type upper cooling injection mold for CPU fan blades |
| CN104260300B (en) * | 2014-09-29 | 2019-06-18 | 重庆开确科技有限公司 | The cooling injection molding upper mold of electric heating wire type band for cpu fan leaf |
| EP3363773A1 (en) * | 2017-02-17 | 2018-08-22 | Trinseo Europe GmbH | Fibrous sheets coated with polyolefin compositions and methods of preparation |
| CN107825643A (en) * | 2017-11-23 | 2018-03-23 | 宁波伯骏智能科技有限公司 | A kind of production system of fibre reinforced composites product |
| CN107901516A (en) * | 2017-11-23 | 2018-04-13 | 宁波伯骏智能科技有限公司 | A kind of fibre reinforced composites product |
| CN108219274A (en) * | 2017-12-28 | 2018-06-29 | 浙江华江科技股份有限公司 | A kind of automobile door internal decoration substrate composites and preparation method thereof |
| CN108467549A (en) * | 2018-03-29 | 2018-08-31 | 平顶山学院 | A kind of Electric insulation material and preparation method thereof that high temperature resistant is anti-aging |
| CN108908843A (en) * | 2018-07-24 | 2018-11-30 | 宁波华翔汽车技术有限公司 | Automobile plastic air filter support and manufacturing method thereof |
| CN115071043A (en) * | 2022-06-16 | 2022-09-20 | 中国十七冶集团有限公司 | Large-batch plastic surface fiber reinforced production method |
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Application publication date: 20130911 |