CN103408903A - High-strength insulating support beam and preparation method thereof - Google Patents
High-strength insulating support beam and preparation method thereof Download PDFInfo
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- CN103408903A CN103408903A CN2013103820934A CN201310382093A CN103408903A CN 103408903 A CN103408903 A CN 103408903A CN 2013103820934 A CN2013103820934 A CN 2013103820934A CN 201310382093 A CN201310382093 A CN 201310382093A CN 103408903 A CN103408903 A CN 103408903A
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Abstract
The invention discloses a high-strength insulating support beam and a preparation method thereof. The problem that the existing insulating support beam is low in mechanical strength and poor in electric performance is solved. The insulating support beam comprises a glass cloth layer, wherein the glass cloth layer is immersed with flame-retardant epoxy resin glue solutions or common epoxy resin glue solutions; the flame-retardant epoxy resin glue solutions are glue solutions which are prepared by adding curing agents, curing accelerators, solvents and flame-retardant agents into flame-retardant epoxy resins; and the common epoxy resin glue solutions are glue solutions which are prepared by adding curing agents, curing accelerators, solvents and flame-retardant agents into common epoxy resins. The insulating support beam has the characteristics of high mechanical strength and high electric performance, can be suitable for supporting large-scale and super-huge type electric equipment in an insulating mode, and can be simultaneously suitable for supporting electric facilities with high voltage and extra-high voltage.
Description
Technical field
The invention belongs to insulating supporting beam field, relate in particular to a kind of high-strength insulating supporting beam and preparation method thereof.
Background technology
Insulating supporting beam (plate) is widely used in the fields such as wind-powered electricity generation, national grid, frequency conversion tank, track traffic, is the important component part that guarantees Electrical Safety.
Existing insulcrete all is set to plate profile structure, and the lifting of mechanical property (being mainly load-bearing) can only rely on the thickness of thickening layer insulcrete or increase the quantity of insulcrete, namely to installation, has brought trouble, has also increased cost simultaneously.
For example application number is that 201220486913.5 utility model patent discloses a kind of power transformer insulcrete, is arranged on transformer, comprises insulcrete, and the joint face of insulcrete is provided with a layer insulating, and described insulation layer is made by the DMD insulation paper.Insulation layer sticks on insulcrete, and insulcrete is the long strip shape structure.
Application number is that 201220572894.8 utility model patent discloses a kind of high-strength SMC insulcrete, it has steel plate, upper table man and the lower surface of steel plate all have rectangular preiection, on the upper surface of steel plate and lower surface, be respectively equipped with SMC insulcrete and lower SMC insulcrete, and rectangular preiection is embedded in all in SMC insulcrete and lower SMC insulcrete.
Yet, although this this strength S MC insulcrete has increased physical strength, by being set on the surface of steel plate, the SMC insulcrete plays insulating effect, not only increased the cost of producing and making, increased simultaneously the weight of insulcrete, and be not easy to transportation.
And more existing insulcretes are suppressed by epoxy glass cloth and are formed, and this insulcrete all has larger shortcoming in electric property and mechanical properties, for example traditional epoxy glass cloth is all poor in anti creepage trace, arc resistance, flame retardant resistance, can not be used in high pressure and extra-high voltage equipment simultaneously, simultaneously can only be made into platy structure, the lifting of mechanical property can only rely on the thickening epoxy glass cloth or increase the quantity of insulcrete.
Summary of the invention
The present invention is the above-mentioned technical problem of solution isolation beam, and a kind of high-strength insulating beam is provided, and has the characteristics of light weight, high, fire-retardant, the anti-electric arc of intensity, anti-electric leakage, can be applicable in the equipment of high pressure and extra-high voltage.
The present invention solves the problems of the technologies described above the technical scheme adopted to be:
A kind of high-strength insulating supporting beam is characterized in that: the U-shaped structure formed by the glass cloth prepreg slaking; Described glass cloth prepreg is to infiltrate the woven fiber glass that the fire retarding epoxide resin sol solution is arranged, and described fire retarding epoxide resin sol solution is the sol solution that adds solidifying agent, curing catalyst, solvent and fire retardant to make in fire retarding epoxide resin; Solidifying agent, curing catalyst, solvent, fire retardant are configured according to following ratio;
Solidifying agent: account for 3-10% of fire retarding epoxide resin solid weight;
Curing catalyst: 0. 01-5% that accounts for the fire retarding epoxide resin solid weight;
Solvent: the 50-80% that accounts for the fire retarding epoxide resin solid weight;
Fire retardant: the 10-40% that accounts for the fire retarding epoxide resin solid weight.
Further, described fire retarding epoxide resin is the combination of phosphorous epoxy resin or phosphorous epoxy resin and halogen-free epoxy resin.
Further, described halogen-free epoxy resin is a kind of in bisphenol A diglycidyl ether, Bisphenol F diglycidylether, bisphenol-S diglycidyl ether, linear phenolic aldehyde polyglycidyl ether, linear cresoform polyglycidyl ether or glycidyl amine type epoxy resin.
Further, described solidifying agent is any of aliphatic diamine, aromatic diamine or the following epoxy hardener that contains P-structure.
Further, described aliphatic diamine is quadrol, butanediamine or hexanediamine; Described aromatic diamine is 4,4 ' diaminodiphenylmethane, 4,4 ' diaminodiphenylsulfone(DDS) or 4,4 ' diaminodiphenyl oxide.
Further, described solidifying agent promotor is glyoxal ethyline, 2-ethyl-4-methylimidazole, 2-ethyl imidazol(e), 2-phenylimidazole, or N, N dimethyl benzylamine, N, N xylidine, trolamine, triethylamine, 2, a kind of in 4,6 ,-tri--(dimethylamino methyl)-phenol.
Further, described solvent is one or more the combination in toluene, ethanol, dimethyl formamide, N,N-DIMETHYLACETAMIDE, glycol dimethyl ether, ethylene glycol ethyl ether acetic acid vinegar, methylethylketone, pimelinketone or acetone.
Further, described fire retardant is the combination of a kind of in organic fire-retardant or inorganic combustion inhibitor or two kinds.
Further, described inorganic combustion inhibitor is one or more combination of antimonous oxide, aluminum trihydrate, alkaline oxalic acid aluminium, aluminum phosphate, ammonium polyphosphate, melamine cyanurate.
High-strength insulating supporting beam preparation method comprises the following steps:
(1) prepare the fire retarding epoxide resin sol solution: according to above-mentioned raw materials, get the raw materials ready, after first adding solvent, fire retarding epoxide resin, solidifying agent, solidifying agent promotor to stir, then after adding fire retardant to stir, make the fire retarding epoxide resin sol solution;
(2) prepare glass cloth prepreg: the woven fiber glass that will soak the fat glue in step (1) makes glass cloth prepreg by vertical glue dipping machine;
(3) compression moulding: with mould pressed glass cloth prepreg moulding in thermocompressor or vacuum hotpressing machine.
Further, prepare cutting (being cut into the size of the required processing) step that prepreg also comprises woven fiber glass before.
Further, before compression moulding, also need glass cloth prepreg is laid, and on the upper end face of glass cloth prepreg and lower end face place mat high temperature resistant release film.
Compared with prior art, the present invention has following beneficial effect:
High-strength insulating supporting beam of the present invention has light weight, excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance, can be applicable in high pressure and extra-high voltage equipment.The present invention simultaneously also has high mechanical property, high-strength insulating supporting beam flexural strength of the present invention can reach 746(Mpa), tensile strength can reach 727(Mpa), do not need the insulating supporting beam is made to thicker thickness, just can bear heavy lift, can be applicable to the insulating supporting of large-scale electric equipment and large equipment, reduce simultaneously cost of manufacture and be convenient to simultaneously transportation; Reduce the mounting height of consumer, be convenient to install and use.
High-strength insulating supporting beam of the present invention by batching, prepare prepreg compression moulding and can obtain, have the advantages that manufacturing process is few, can also utilize as required special-purpose die production to go out required shape simultaneously, improve Practical Performance of the present invention.
The accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings and the specific embodiments, and described embodiment is only the present invention's part embodiment, is not whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiment used that obtain under the creative work prerequisite, belongs to protection scope of the present invention.
The high-strength insulating supporting beam, the U-shaped structure formed by the glass cloth prepreg slaking; Described glass cloth prepreg is to infiltrate the woven fiber glass that the fire retarding epoxide resin sol solution is arranged, and described fire retarding epoxide resin sol solution is the sol solution that adds solidifying agent, curing catalyst, solvent and fire retardant to make in fire retarding epoxide resin; Solidifying agent, curing catalyst, solvent, fire retardant are configured according to following ratio;
Solidifying agent: account for 3-10% of fire retarding epoxide resin solid weight;
Curing catalyst: 0. 01-5% that accounts for the fire retarding epoxide resin solid weight;
Solvent: the 50-80% that accounts for the fire retarding epoxide resin solid weight;
Fire retardant: the 10-40% that accounts for the fire retarding epoxide resin solid weight.
Further, described fire retarding epoxide resin is the combination of phosphorous epoxy resin or phosphorous epoxy resin and halogen-free epoxy resin.
The structural formula of phosphorous epoxy resin is as follows:
Further, described halogen-free epoxy resin is a kind of in bisphenol A diglycidyl ether, Bisphenol F diglycidylether, bisphenol-S diglycidyl ether, linear phenolic aldehyde polyglycidyl ether, linear cresoform polyglycidyl ether or glycidyl amine type epoxy resin.
The structural formula of bisphenol A diglycidyl ether is as follows:
The structural formula of Bisphenol F diglycidylether is as follows:
The structural formula of bisphenol-S diglycidyl ether is as follows:
The structural formula of linear phenolic aldehyde polyglycidyl ether is as follows:
The structural formula of linear cresoform polyglycidyl ether is as follows:
The structural formula of glycidyl amine type epoxy resin is as follows:
Further, described solidifying agent is any of aliphatic diamine, aromatic diamine or the following epoxy hardener that contains P-structure.
The structural formula of epoxy hardener that contains P-structure is as follows:
Further, described aliphatic diamine is quadrol, butanediamine or hexanediamine; Described aromatic diamine is 4,4 ' diaminodiphenylmethane, 4,4 ' diaminodiphenylsulfone(DDS) or 4,4 ' diaminodiphenyl oxide.
Further, described solidifying agent promotor is glyoxal ethyline, 2-ethyl-4-methylimidazole, 2-ethyl imidazol(e), 2-phenylimidazole, or N, N dimethyl benzylamine, N, N xylidine, trolamine, triethylamine, 2, a kind of in 4,6 ,-tri--(dimethylamino methyl)-phenol.
Further, described solvent is one or more the combination in toluene, ethanol, dimethyl formamide, N,N-DIMETHYLACETAMIDE, glycol dimethyl ether, ethylene glycol ethyl ether acetic acid vinegar, methylethylketone, pimelinketone or acetone.
Further, described fire retardant is the combination of a kind of in organic fire-retardant or inorganic combustion inhibitor or two kinds.
Further, described inorganic combustion inhibitor is one or more combination of antimonous oxide, aluminum trihydrate, alkaline oxalic acid aluminium, aluminum phosphate, ammonium polyphosphate, melamine cyanurate.
The high-strength insulating supporting beam, its preparation method comprises the following steps:
(1) prepare the fire retarding epoxide resin sol solution: according to above-mentioned raw materials, get the raw materials ready, first add solvent, fire retarding epoxide resin, solidifying agent, solidifying agent promotor to stir, the time of stirring is 30～60 minutes.Add again organic and inorganic combustion inhibitor, then stirred 1～3 hour, the molding time of sampling and testing glue, its molding time is between 180～600 seconds.
(2) prepare glass cloth prepreg: the woven fiber glass that will soak the fat glue in step (1) makes glass cloth prepreg by vertical glue dipping machine;
(3) compression moulding: with mould pressed glass cloth prepreg moulding in thermocompressor or vacuum hotpressing machine.
Further, prepare cutting (being cut into the size of the required processing) step that prepreg also comprises woven fiber glass before.
Further, before compression moulding, also need glass cloth prepreg is laid, and on the upper end face of glass cloth prepreg and lower end face place mat high temperature resistant release film.
The present invention also can replace with ordinary epoxy resin by fire retarding epoxide resin.
Be high-strength insulating supporting beam of the present invention, the U-shaped structure that the glass cloth prepreg slaking forms; Described glass cloth prepreg is to infiltrate the woven fiber glass that the ordinary epoxy resin sol solution is arranged, and described ordinary epoxy resin sol solution is the sol solution that adds solidifying agent, curing catalyst, solvent and fire retardant to make in ordinary epoxy resin; Solidifying agent, curing catalyst, solvent, fire retardant are configured according to following ratio;
Solidifying agent: account for 3-10% of ordinary epoxy resin solid weight;
Curing catalyst: 0. 01-5% that accounts for the ordinary epoxy resin solid weight;
Solvent: the 50-80% that accounts for the ordinary epoxy resin solid weight;
Fire retardant: the 10-40% that accounts for the ordinary epoxy resin solid weight.
The kind of ordinary epoxy resin and structural formula those skilled in the art understand and understand, and do not repeat them here.Solidifying agent, curing catalyst, solvent, fire retardant are all identical with kind and structural formula described above, and preparation method and step are also identical.
High-strength insulating supporting beam of the present invention has light weight, excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance, can be applicable in high pressure and extra-high voltage equipment.The present invention simultaneously also has high mechanical property, high-strength insulating supporting beam flexural strength of the present invention can reach 746(Mpa), tensile strength can reach 727(Mpa), do not need the insulating supporting beam is made to thicker thickness, just can bear heavy lift, can be applicable to the insulating supporting of large-scale electric equipment and large equipment, reduce simultaneously cost of manufacture and be convenient to simultaneously transportation; Reduce the mounting height of consumer, be convenient to install and use.
High-strength insulating supporting beam of the present invention by the batching, prepare prepreg, maturation process compression moulding can obtain, have the advantages that manufacturing process is few, simultaneously can utilize as required special-purpose die production to go out required shape, improve Practical Performance of the present invention.
Embodiment mono-
In fire retarding epoxide resin solid weight part (embodiment of back is all according to fire retarding epoxide resin or ordinary epoxy resin solid weight part meter):
After 50 parts of 100 parts of phosphorous epoxy resins (structural formula (1)), 3 parts of quadrols, 0.01 part of glyoxal ethyline and toluene, stir and stir after 40 minutes, add again 10 parts of organic fire-retardants (structural formula (a)), stirred again 2 hours, by pocket knife method test sol solution molding time, be 200s, the fire retarding epoxide resin sol solution prepares complete.
To soak the woven fiber glass of fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature condition, make glass cloth prepreg (semicure) sheet.
Prepreg is cut into to desired size, by the processing requirement lay, combine after, the upper high temperature resistant release film of two sides pad, send into the thermocompressor (or vacuum hotpressing machine) that the formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down and make the high-strength insulating supporting beam, the structural representation of the present embodiment high-strength insulating supporting beam is illustrated in figure 1 U-shaped shape.Through experiment test, the physical strength of the U-shaped high-strength insulating supporting beam of the present embodiment is if entered as shown in following table:
As can be seen from the table, high-strength insulating supporting beam of the present invention, has high mechanical property, do not need the insulating supporting beam is made to thicker thickness, just can bear heavy lift, can be applicable to the insulating supporting of large-scale electric equipment and large equipment, reduce simultaneously cost of manufacture and be convenient to simultaneously transportation; Reduce the mounting height of consumer, be convenient to install and use.Simultaneously, the insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment bis-
100 parts of phosphorous epoxy resins (structural formula (2)), 10 parts of 4,4 ' diaminodiphenylmethane, 5 parts of 2-ethyl-4-methylimidazoles, 80 parts of ethanol, 40 parts of organophosphorous fire retardants (structural formula (b)).
Embodiment tri-
100 parts of phosphorous epoxy resins (structural formula (3)), 3 parts of 4,4 ' diaminodiphenylsulfone(DDS)s, 2-ethyl imidazol(e), 5 parts, 80 parts of dimethyl formamides, 40 parts of organophosphorous fire retardants (structural formula (c)).
Embodiment tetra-
100 parts of phosphorous epoxy resins (structural formula (4)), 10 parts of 4,4 ' diaminodiphenyl oxides, 0.01 part of 2-phenylimidazole, 50 parts of N,N-DIMETHYLACETAMIDEs, 10 parts of organophosphorous fire retardants (structural formula (d)).
Embodiment five
100 parts of phosphorous epoxy resins (structural formula (5)), contain 4 parts of the epoxy hardeners (structural formula (a)) of P-structure, N, 0.01 part of N dimethyl benzylamine, 50 parts of glycol dimethyl ethers, 10 parts of organophosphorous fire retardants (structural formula (e)).
Embodiment six
100 parts of phosphorous epoxy resins (structural formula (6)), contain 5 parts of the epoxy hardeners (structural formula (b)) of P-structure, N, 0.03 part of N xylidine, 55 parts of ethylene glycol ethyl ether acetic acid vinegar, 20 parts of organophosphorous fire retardants (structural formula (f)).
Embodiment seven
100 parts of phosphorous epoxy resins (structural formula (7)), contain 5 parts of the epoxy hardeners (structural formula (c)) of P-structure, 1 part of trolamine, 60 parts of methylethylketones, 12 parts of organophosphorous fire retardants (structural formula (g)).
Embodiment eight
100 parts of phosphorous epoxy resins (structural formula (8)), contain 6 parts of the epoxy hardeners (structural formula (d)) of P-structure, 2 parts of triethylamines, 65 parts of pimelinketone, 15 parts of organophosphorous fire retardants (structural formula (h)).
Embodiment nine
Totally 100 parts of phosphorous epoxy resin (structural formula (1)) and bisphenol A diglycidyl ethers, 7 parts of hexanediamines, 0.05 part of 2,4,6 ,-tri--(dimethylamino methyl)-phenol, 70 parts, acetone, 20 parts of organophosphorous fire retardants (structural formula (a)).
Embodiment ten
Totally 100 parts of phosphorous epoxy resin (structural formula (2)) and Bisphenol F diglycidylethers, 8 parts of 4,4 ' diaminodiphenylmethane, totally 74 parts of 0.08 part of glyoxal ethylines, toluene and ethanol, 28 parts of organophosphorous fire retardants (structural formula (h)).
Embodiment 11
Totally 100 parts of phosphorous epoxy resin (structural formula (3)) and bisphenol-S diglycidyl ethers, 8.5 parts of epoxy hardeners (structural formula (e)) that contain P-structure, totally 80 parts of 3 parts of 2-ethyl-4-methylimidazoles, ethanol and dimethyl formamide, 15 parts of inorganic combustion inhibitors (antimonous oxide).
Embodiment 12
In reactor, add, totally 100 parts of phosphorous epoxy resin (structural formula (4)) and linear phenolic aldehyde polyglycidyl ethers, 9 parts of epoxy hardeners (structural formula (e)) that contain P-structure, 4 parts of 2-ethyl imidazol(e)s, totally 67 parts of glycol dimethyl ether, ethylene glycol ethyl ether acetic acid vinegar and methylethylketones, stir after 30 minutes 38 parts of the melamine cyanurates of stirring, then stirred 1 hour, by pocket knife method test sol solution molding time, be 100s, the fire retarding epoxide resin sol solution prepares complete.
To soak the woven fiber glass of fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature condition, make glass cloth prepreg (semicure) sheet.
Prepreg is cut into to desired size, by the processing requirement lay, combine after, the upper high temperature resistant release film of two sides pad, send into the vacuum hotpressing machine that the formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down and make the high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 740 Mpa, and tensile strength is 726 Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 181s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 13
In reactor, add totally 100 parts of phosphorous epoxy resin (structural formula (5)) and linear cresoform polyglycidyl ethers, 4.3 parts of epoxy hardeners (structural formula (f)) that contain P-structure, 4.6 parts of trolamines, totally 78 parts of dimethyl formamide, N,N-DIMETHYLACETAMIDE and glycol dimethyl ethers, stirred 60 minutes, add again totally 17 parts of organophosphorous fire retardant (structural formula (g)) and inorganic combustion inhibitors (alkaline oxalic acid aluminium), stirred again 2 hours, by pocket knife method test sol solution molding time, be 600s, the fire retarding epoxide resin sol solution prepares complete.
To soak the woven fiber glass of fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature condition, make glass cloth prepreg (semicure) sheet.
Prepreg is cut into to desired size, by the processing requirement lay, combine after, the upper high temperature resistant release film of two sides pad, send into the vacuum hotpressing machine that the formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down and make the high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 743.2 Mpa, and tensile strength is 719 Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 14
In reactor, add totally 100 parts of phosphorous epoxy resin (structural formula (3)) and glycidyl amine type epoxy resins, 7.6 parts of epoxy hardeners (structural formula (g)) that contain P-structure, N, 5 parts of N dimethyl benzylamines, totally 65.5 parts, methylethylketone and acetone, stirred 38 minutes, add again totally 34 parts of organophosphorous fire retardant (structural formula (h)) and inorganic combustion inhibitors (ammonium polyphosphate), stirred again 3 hours, by pocket knife method test sol solution molding time, be 240s, the fire retarding epoxide resin sol solution prepares complete.
To soak the woven fiber glass of fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature condition, make glass cloth prepreg (semicure) sheet.
Prepreg is cut into to desired size, by the processing requirement lay, combine after, the upper high temperature resistant release film of two sides pad, send into the vacuum hotpressing machine that the formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down and make the high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 742 Mpa, and tensile strength is 730 Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 178s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 15
In reactor, add totally 100 parts of phosphorous epoxy resin (structural formula (8)) and bisphenol A diglycidyl ethers, 10 parts of epoxy hardeners (structural formula (h)) that contain P-structure, 3 parts of 2-phenylimidazoles, toluene, ethanol, dimethyl formamide, N,N-DIMETHYLACETAMIDE, glycol dimethyl ether, ethylene glycol ethyl ether acetic acid vinegar, methylethylketone, totally 80 parts, pimelinketone and acetone, stirred 30 minutes, add again totally 20 parts of organophosphorous fire retardant (structural formula (b)) and inorganic combustion inhibitors (aluminum phosphate), stirred again 2.5 hours, by pocket knife method test sol solution molding time, be 460s, the fire retarding epoxide resin sol solution prepares complete.
To soak the woven fiber glass of fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature condition, make glass cloth prepreg (semicure) sheet.
Prepreg is cut into to desired size, by the processing requirement lay, combine after, the upper high temperature resistant release film of two sides pad, send into the vacuum hotpressing machine that the formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down and make the high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 732 Mpa, and tensile strength is 727 Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 178s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 16
In reactor, add 100 parts of phosphorous epoxy resins (structural formula (3)), 7.6 parts of epoxy hardeners (structural formula (i)) that contain P-structure, totally 54 parts of 0.05 part of 2-ethyl-4-methylimidazoles, toluene and methylethylketone, stirred 50 minutes, add again totally 17 parts of organophosphorous fire retardant (structural formula (d)) and inorganic combustion inhibitors (aluminum trihydrate), stirring 2.6 hours, is 580s by pocket knife method test sol solution molding time again, and the fire retarding epoxide resin sol solution prepares complete.
To soak the woven fiber glass of fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature condition, make glass cloth prepreg (semicure) sheet.
Prepreg is cut into to desired size, by the processing requirement lay, combine after, the upper high temperature resistant release film of two sides pad, send into the vacuum hotpressing machine that the formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down and make the high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 732 Mpa, and tensile strength is 727 Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 179s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 17
100 parts of phosphorous epoxy resins (structural formula (5)), contain 3 parts of the epoxy hardeners (structural formula (j)) of P-structure, N, 0.01 part of N dimethyl benzylamine, 50 parts of glycol dimethyl ethers, 10 parts of organophosphorous fire retardants (structural formula (e)).
Embodiment 18
100 parts of phosphorous epoxy resins (structural formula (8)), contain 10 parts of the epoxy hardeners (structural formula (k)) of P-structure, 5 parts of triethylamines, 80 parts of pimelinketone, 40 parts of organophosphorous fire retardants (structural formula (h)).
Embodiment 19
100 parts of phosphorous epoxy resins (structural formula (3)), contain 6 parts of the epoxy hardeners (structural formula (l)) of P-structure, 3 parts of 2-ethyl imidazol(e)s, 52 parts of dimethyl formamides, 33 parts of organophosphorous fire retardants (structural formula (c)).
Embodiment 20
100 parts of phosphorous epoxy resins (structural formula (2)), contain 7 parts of the epoxy hardeners (structural formula (m)) of P-structure, N, 0.25 part of N dimethyl benzylamine, 65 parts of glycol dimethyl ethers, 27 parts of organophosphorous fire retardants (structural formula (d)).
High-strength insulating supporting beam of the present invention has light weight, excellent flame retardant resistance (reaching UL94 V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance, can be applicable in high pressure and extra-high voltage equipment.The present invention simultaneously also has high mechanical property, high-strength insulating supporting beam flexural strength of the present invention can reach 746(Mpa), tensile strength can reach 727(Mpa), do not need the insulating supporting beam is made to thicker thickness, just can bear heavy lift, can be applicable to the insulating supporting of large-scale electric equipment and large equipment, reduce simultaneously cost of manufacture and be convenient to simultaneously transportation; Reduce the mounting height of consumer, be convenient to install and use.
High-strength insulating supporting beam of the present invention by batching, prepare prepreg compression moulding and can obtain, have the advantages that manufacturing process is few, can also utilize as required special-purpose die production to go out required shape simultaneously, improve Practical Performance of the present invention.
Claims (10)
1. high-strength insulating supporting beam is characterized in that: the U-shaped structure formed by the glass cloth prepreg slaking; Described glass cloth prepreg is to infiltrate the woven fiber glass that the fire retarding epoxide resin sol solution is arranged, and described fire retarding epoxide resin sol solution is the sol solution that adds solidifying agent, curing catalyst, solvent and fire retardant to make in fire retarding epoxide resin; Solidifying agent, curing catalyst, solvent, fire retardant are configured according to following ratio;
Solidifying agent: account for 3-10% of fire retarding epoxide resin solid weight;
Curing catalyst: 0. 01-5% that accounts for the fire retarding epoxide resin solid weight;
Solvent: the 50-80% that accounts for the fire retarding epoxide resin solid weight;
Fire retardant: the 10-40% that accounts for the fire retarding epoxide resin solid weight.
2. high-strength insulating supporting beam according to claim 1, it is characterized in that: described fire retarding epoxide resin is the combination of phosphorous epoxy resin or phosphorous epoxy resin and halogen-free epoxy resin.
3. high-strength insulating supporting beam according to claim 2 is characterized in that: described halogen-free epoxy resin is a kind of in bisphenol A diglycidyl ether, Bisphenol F diglycidylether, bisphenol-S diglycidyl ether, linear phenolic aldehyde polyglycidyl ether, linear cresoform polyglycidyl ether or glycidyl amine type epoxy resin.
4. high-strength insulating supporting beam according to claim 1 is characterized in that: described solidifying agent is any of aliphatic diamine, aromatic diamine or the following epoxy hardener that contains P-structure.
5. high-strength insulating supporting beam according to claim 4, it is characterized in that: described aliphatic diamine is quadrol, butanediamine or hexanediamine; Described aromatic diamine is 4,4 ' diaminodiphenylmethane, 4,4 ' diaminodiphenylsulfone(DDS) or 4,4 ' diaminodiphenyl oxide.
6. high-strength insulating supporting beam according to claim 1, it is characterized in that: described solidifying agent promotor is glyoxal ethyline, 2-ethyl-4-methylimidazole, 2-ethyl imidazol(e), 2-phenylimidazole, or N, N dimethyl benzylamine, N, N xylidine, trolamine, triethylamine, 2, a kind of in 4,6 ,-tri--(dimethylamino methyl)-phenol.
7. high-strength insulating supporting beam according to claim 1 is characterized in that: described solvent is one or more the combination in toluene, ethanol, dimethyl formamide, N,N-DIMETHYLACETAMIDE, glycol dimethyl ether, ethylene glycol ethyl ether acetic acid vinegar, methylethylketone, pimelinketone or acetone.
8. high-strength insulating supporting beam according to claim 1 is characterized in that: described fire retardant is the combination of a kind of in organic fire-retardant or inorganic combustion inhibitor or two kinds.
9. high-strength insulating supporting beam according to claim 7 is characterized in that: described inorganic combustion inhibitor is one or more combination of antimonous oxide, aluminum trihydrate, alkaline oxalic acid aluminium, aluminum phosphate, ammonium polyphosphate, melamine cyanurate.
10. according to the arbitrary described high-strength insulating supporting beam of claim 1-9, its preparation method comprises the following steps:
(1) prepare the fire retarding epoxide resin sol solution: according to above-mentioned raw materials, get the raw materials ready, after first adding solvent, fire retarding epoxide resin, solidifying agent, solidifying agent promotor to stir, then after adding fire retardant to stir, make the fire retarding epoxide resin sol solution;
(2) prepare glass cloth prepreg: the woven fiber glass that will soak the fat glue in step (1) makes glass cloth prepreg by vertical glue dipping machine;
(3) compression moulding: with mould pressed glass cloth prepreg moulding in thermocompressor or vacuum hotpressing machine.
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