CN103408903B - A kind of high-strength insulating supporting beam and preparation method thereof - Google Patents
A kind of high-strength insulating supporting beam and preparation method thereof Download PDFInfo
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- CN103408903B CN103408903B CN201310382093.4A CN201310382093A CN103408903B CN 103408903 B CN103408903 B CN 103408903B CN 201310382093 A CN201310382093 A CN 201310382093A CN 103408903 B CN103408903 B CN 103408903B
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Abstract
The invention discloses a kind of high-strength insulating supporting beam and preparation method thereof, low for solving existing insulating supporting beam physical strength, the problem of electric property difference.The present invention includes glass fabric layer, described glass fabric layer infiltrates fire retarding epoxide resin sol solution or ordinary epoxy resin sol solution, described fire retarding epoxide resin sol solution is in fire retarding epoxide resin, add the sol solution that solidifying agent, curing catalyst, solvent and fire retardant make, and described ordinary epoxy resin sol solution is in ordinary epoxy resin, add the sol solution that solidifying agent, curing catalyst, solvent and fire retardant make.It is high that insulating supporting beam of the present invention has physical strength, the feature that electric property is high, can be applicable to the insulating supporting of large-scale and super-huge electrical equipment, the insulating supporting that the electricity consumption that simultaneously can be applicable to high pressure and extra-high voltage is arranged.
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 ensureing Electrical Safety.
Existing insulcrete is all set to plate profile structure, and the lifting of mechanical property (mainly load-bearing) can only rely on the thickness of thickening layer insulcrete or increase the quantity of insulcrete, namely brings trouble to installation, too increases cost simultaneously.
Such as application number be 201220486913.5 utility model patent disclose a kind of power transformer insulcrete, be arranged on transformer, comprise insulcrete, the joint face of insulcrete is provided with a layer insulating, and described insulation layer is made up of DMD insulation paper.Insulation layer sticks on insulcrete, and insulcrete is string configuration.
Application number be 201220572894.8 utility model patent disclose a kind of high-strength SMC insulcrete, it has steel plate, the upper table man of steel plate and lower surface all have rectangular preiection, the upper surface and lower surface of steel plate are respectively equipped with SMC insulcrete and lower SMC insulcrete, and rectangular preiection is all embedded in SMC insulcrete and lower SMC insulcrete.
But, although this this strength S MC insulcrete adds physical strength, playing insulating effect by arranging SMC insulcrete on a surface of a steel sheet, not only increasing the cost produced and make, adding the weight of insulcrete simultaneously, be not easy to transport.
And more existing insulcretes are formed by epoxy glass cloth compacting, and this insulcrete all has larger shortcoming in electric property and mechanical properties, such as 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, can only be made into platy structure, the lifting of mechanical property can only rely on the quantity thickening epoxy glass cloth or increase insulcrete simultaneously.
Summary of the invention
The present invention is the above-mentioned technical problem solving isolation beam, and provides a kind of high-strength insulating beam, has the feature of light weight, high, fire-retardant, the resistance to electric arc of intensity, resistance to electric leakage, can be applicable in the equipment of high pressure and extra-high voltage.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A kind of high-strength insulating supporting beam, is characterized in that: by the U-shaped structure of glass cloth prepreg slaking; Described glass cloth prepreg infiltrates to have the woven fiber glass of fire retarding epoxide resin sol solution, described fire retarding epoxide resin sol solution to be in fire retarding epoxide resin, add the sol solution that solidifying agent, curing catalyst, solvent and fire retardant make; The following ratio of solidifying agent, curing catalyst, solvent, fire retardant is configured;
Solidifying agent: account for 3-10% of fire retarding epoxide resin solid weight;
Curing catalyst: the 0.01-5% accounting for fire retarding epoxide resin solid weight;
Solvent: the 50-80% accounting for fire retarding epoxide resin solid weight;
Fire retardant: the 10-40% accounting for 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 the one in bisphenol A diglycidyl ether, Bisphenol F diglycidylether, bisphenol-S diglycidyl ether, novolac polyglycidyl ether, linear cresoform polyglycidyl ether or glycidyl amine type epoxy resin.
Further, described solidifying agent is any one of aliphatic diamine, aromatic diamine or the following epoxy hardener containing 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, one 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 ether acetate, 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, its preparation method comprises the following steps:
(1) prepare fire retarding epoxide resin sol solution: get the raw materials ready according to raw material, first add solvent, after fire retarding epoxide resin, solidifying agent, solidifying agent promotor stirs, then add fire retardant stir after obtained fire retarding epoxide resin sol solution;
(2) glass cloth prepreg is prepared: the woven fiber glass of the fat glue in dipped step (1) is obtained glass cloth prepreg by vertical glue dipping machine;
(3) compression moulding: shaping with mould pressed glass cloth prepreg in thermocompressor or vacuum hotpressing machine.
Further, prepare prepreg before also comprise cutting (be cut into required processing the size) step of woven fiber glass.
Further, before compression moulding, also need glass cloth prepreg to lay, and on the upper end face and lower end face place mat of glass cloth prepreg 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 UL94V-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), insulating supporting beam is not needed to make thicker thickness, just heavy lift can be born, the insulating supporting of large-scale electric equipment and large equipment can be applicable to, reduce cost of manufacture simultaneously and be convenient to transport simultaneously; Reduce the mounting height of electrical equipment, 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, special die production can also be utilized as required to go out required shape simultaneously, improve Practical Performance of the present invention.
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 embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments used obtained under creative work prerequisite, belongs to protection scope of the present invention.
High-strength insulating supporting beam, by the U-shaped structure of glass cloth prepreg slaking; Described glass cloth prepreg infiltrates to have the woven fiber glass of fire retarding epoxide resin sol solution, described fire retarding epoxide resin sol solution to be in fire retarding epoxide resin, add the sol solution that solidifying agent, curing catalyst, solvent and fire retardant make; The following ratio of solidifying agent, curing catalyst, solvent, fire retardant is configured;
Solidifying agent: account for 3-10% of fire retarding epoxide resin solid weight;
Curing catalyst: the 0.01-5% accounting for fire retarding epoxide resin solid weight;
Solvent: the 50-80% accounting for fire retarding epoxide resin solid weight;
Fire retardant: the 10-40% accounting for 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 the one in bisphenol A diglycidyl ether, Bisphenol F diglycidylether, bisphenol-S diglycidyl ether, novolac polyglycidyl ether, linear cresoform polyglycidyl ether or glycidyl amine type epoxy resin.
Further, described solidifying agent is any one of aliphatic diamine, aromatic diamine or the following epoxy hardener containing 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, one 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 ether acetate, 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, its preparation method comprises the following steps:
(1) prepare fire retarding epoxide resin sol solution: get the raw materials ready according to raw material, first add solvent, fire retarding epoxide resin, solidifying agent, solidifying agent promotor stirs, the time of stirring is 30 ~ 60 minutes.Add organic and inorganic combustion inhibitor again, then stir 1 ~ 3 hour, the molding time of sampling and testing glue, its molding time is between 180 ~ 600 seconds.
(2) glass cloth prepreg is prepared: the woven fiber glass of the fat glue in dipped step (1) is obtained glass cloth prepreg by vertical glue dipping machine;
(3) compression moulding: shaping with mould pressed glass cloth prepreg in thermocompressor or vacuum hotpressing machine.
Further, prepare prepreg before also comprise cutting (be cut into required processing the size) step of woven fiber glass.
Further, before compression moulding, also need glass cloth prepreg to lay, and on the upper end face and lower end face place mat of glass cloth prepreg high temperature resistant release film.
Fire retarding epoxide resin also can be replaced with ordinary epoxy resin by the present invention.
I.e. high-strength insulating supporting beam of the present invention, the U-shaped structure of glass cloth prepreg slaking; Described glass cloth prepreg infiltrates to have the woven fiber glass of ordinary epoxy resin sol solution, described ordinary epoxy resin sol solution to be in ordinary epoxy resin, add the sol solution that solidifying agent, curing catalyst, solvent and fire retardant make; The following ratio of solidifying agent, curing catalyst, solvent, fire retardant is configured;
Solidifying agent: account for 3-10% of ordinary epoxy resin solid weight;
Curing catalyst: the 0.01-5% accounting for ordinary epoxy resin solid weight;
Solvent: the 50-80% accounting for ordinary epoxy resin solid weight;
Fire retardant: the 10-40% accounting for ordinary epoxy resin solid weight.
Kind and structural formula those skilled in the art of ordinary epoxy resin understand and understand, and do not repeat them here.Solidifying agent, curing catalyst, solvent, the fire retardant kind all with described above is identical with structural formula, 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 UL94V-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), insulating supporting beam is not needed to make thicker thickness, just heavy lift can be born, the insulating supporting of large-scale electric equipment and large equipment can be applicable to, reduce cost of manufacture simultaneously and be convenient to transport simultaneously; Reduce the mounting height of electrical equipment, be convenient to install and use.
High-strength insulating supporting beam of the present invention by batching, prepare prepreg, maturation process compression moulding can obtain, have the advantages that manufacturing process is few, special die production can be utilized as required to go out required shape simultaneously, improve Practical Performance of the present invention.
Embodiment one
In fire retarding epoxide resin solid weight part (embodiment is below all according to fire retarding epoxide resin or ordinary epoxy resin solid weight part meter):
After phosphorous epoxy resin (structural formula (1)) 100 parts, quadrol 3 parts, glyoxal ethyline 0.01 part and toluene 50 parts, stir and stir after 40 minutes, add organic fire-retardant (structural formula (a)) 10 parts again, stir 2 hours again, testing sol solution molding time by the little skill in using a kitchen knife in cookery is 200s, and fire retarding epoxide resin sol solution is prepared complete.
By the woven fiber glass of dipped fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature, obtained glass cloth prepreg (semicure) sheet.
Prepreg is cut into desired size, by processing requirement lay, combine after, high temperature resistant release film on the pad of two sides, send into the thermocompressor (or vacuum hotpressing machine) that formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down obtained 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 as entered shown in following table:
As can be seen from the table, high-strength insulating supporting beam of the present invention, there is high mechanical property, insulating supporting beam is not needed to make thicker thickness, just heavy lift can be born, the insulating supporting of large-scale electric equipment and large equipment can be applicable to, reduce cost of manufacture simultaneously and be convenient to transport simultaneously; Reduce the mounting height of electrical equipment, be convenient to install and use.Meanwhile, the insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment two
Phosphorous epoxy resin (structural formula (2)) 100 parts, 4,4 ' diaminodiphenylmethane 10 parts, 2-ethyl-4-methylimidazole 5 parts, ethanol 80 parts, organophosphorous fire retardant (structural formula (b)) 40 parts.
Embodiment three
Phosphorous epoxy resin (structural formula (3)) 100 parts, 4,4 ' diaminodiphenylsulfone(DDS) 3 parts, 2-ethyl imidazol(e), 5 parts, dimethyl formamide 80 parts, organophosphorous fire retardant (structural formula (c)) 40 parts.
Embodiment four
Phosphorous epoxy resin (structural formula (4)) 100 parts, 4,4 ' diaminodiphenyl oxide 10 parts, 2-phenylimidazole 0.01 part, N,N-DIMETHYLACETAMIDE 50 parts, organophosphorous fire retardant (structural formula (d)) 10 parts.
Embodiment five
Phosphorous epoxy resin (structural formula (5)) 100 parts, containing the epoxy hardener (structural formula (a)) 4 parts of P-structure, N, N dimethyl benzylamine 0.01 part, glycol dimethyl ether 50 parts, organophosphorous fire retardant (structural formula (e)) 10 parts.
Embodiment six
Phosphorous epoxy resin (structural formula (6)) 100 parts, containing the epoxy hardener (structural formula (b)) 5 parts of P-structure, N, N xylidine 0.03 part, ethylene glycol ether acetate 55 parts, organophosphorous fire retardant (structural formula (f)) 20 parts.
Embodiment seven
Phosphorous epoxy resin (structural formula (7)) 100 parts, containing the epoxy hardener (structural formula (c)) 5 parts of P-structure, trolamine 1 part, methylethylketone 60 parts, organophosphorous fire retardant (structural formula (g)) 12 parts.
Embodiment eight
Phosphorous epoxy resin (structural formula (8)) 100 parts, containing the epoxy hardener (structural formula (d)) 6 parts of P-structure, triethylamine 2 parts, pimelinketone 65 parts, organophosphorous fire retardant (structural formula (h)) 15 parts.
Embodiment nine
Phosphorous epoxy resin (structural formula (1)) and bisphenol A diglycidyl ether totally 100 parts, hexanediamine 7 parts, 2,4,6 ,-tri--(dimethylamino methyl)-phenol 0.05 part, 70 parts, acetone, organophosphorous fire retardant (structural formula (a)) 20 parts.
Embodiment ten
Phosphorous epoxy resin (structural formula (2)) and Bisphenol F diglycidylether totally 100 parts, 4,4 ' diaminodiphenylmethane 8 parts, glyoxal ethyline 0.08 part, toluene and ethanol totally 74 parts, organophosphorous fire retardant (structural formula (h)) 28 parts.
Embodiment 11
Phosphorous epoxy resin (structural formula (3)) and bisphenol-S diglycidyl ether totally 100 parts, containing the epoxy hardener (structural formula (e)) 8.5 parts of P-structure, 2-ethyl-4-methylimidazole 3 parts, ethanol and dimethyl formamide totally 80 parts, inorganic combustion inhibitor (antimonous oxide) 15 parts.
Embodiment 12
Add in a kettle., phosphorous epoxy resin (structural formula (4)) and novolac polyglycidyl ether totally 100 parts, containing the epoxy hardener (structural formula (e)) 9 parts of P-structure, 2-ethyl imidazol(e) 4 parts, glycol dimethyl ether, ethylene glycol ether acetate and methylethylketone totally 67 parts, stirs the melamine cyanurate 38 parts that to stir after 30 minutes, then stirs 1 hour, testing sol solution molding time by the little skill in using a kitchen knife in cookery is 100s, and fire retarding epoxide resin sol solution is prepared complete.
By the woven fiber glass of dipped fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature, obtained glass cloth prepreg (semicure) sheet.
Prepreg is cut into desired size, by processing requirement lay, combine after, high temperature resistant release film on the pad of two sides, sends into and the vacuum hotpressing machine of formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down obtained high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 740Mpa, and tensile strength is 726Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94V-0 level), excellent arc resistance (reaching 181s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 13
In a kettle., add phosphorous epoxy resin (structural formula (5)) and linear cresoform polyglycidyl ether totally 100 parts, containing the epoxy hardener (structural formula (f)) 4.3 parts of P-structure, trolamine 4.6 parts, dimethyl formamide, N,N-DIMETHYLACETAMIDE and glycol dimethyl ether totally 78 parts, stir 60 minutes, add organophosphorous fire retardant (structural formula (g)) and inorganic combustion inhibitor (alkaline oxalic acid aluminium) totally 17 parts again, stir 2 hours again, testing sol solution molding time by the little skill in using a kitchen knife in cookery is 600s, and fire retarding epoxide resin sol solution is prepared complete.
By the woven fiber glass of dipped fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature, obtained glass cloth prepreg (semicure) sheet.
Prepreg is cut into desired size, by processing requirement lay, combine after, high temperature resistant release film on the pad of two sides, sends into and the vacuum hotpressing machine of formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down obtained high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 743.2Mpa, and tensile strength is 719Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94V-0 level), excellent arc resistance (reaching 182s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 14
In a kettle., add phosphorous epoxy resin (structural formula (3)) and glycidyl amine type epoxy resin totally 100 parts, containing the epoxy hardener (structural formula (g)) 7.6 parts of P-structure, N, N dimethyl benzylamine 5 parts, totally 65.5 parts, methylethylketone and acetone, stir 38 minutes, add organophosphorous fire retardant (structural formula (h)) and inorganic combustion inhibitor (ammonium polyphosphate) totally 34 parts again, stir 3 hours again, testing sol solution molding time by the little skill in using a kitchen knife in cookery is 240s, and fire retarding epoxide resin sol solution is prepared complete.
By the woven fiber glass of dipped fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature, obtained glass cloth prepreg (semicure) sheet.
Prepreg is cut into desired size, by processing requirement lay, combine after, high temperature resistant release film on the pad of two sides, sends into and the vacuum hotpressing machine of formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down obtained high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 742Mpa, and tensile strength is 730Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94V-0 level), excellent arc resistance (reaching 178s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 15
In a kettle., add phosphorous epoxy resin (structural formula (8)) and bisphenol A diglycidyl ether totally 100 parts, containing the epoxy hardener (structural formula (h)) 10 parts of P-structure, 2-phenylimidazole 3 parts, toluene, ethanol, dimethyl formamide, N,N-DIMETHYLACETAMIDE, glycol dimethyl ether, ethylene glycol ether acetate, methylethylketone, totally 80 parts, pimelinketone and acetone, stir 30 minutes, add organophosphorous fire retardant (structural formula (b)) and inorganic combustion inhibitor (aluminum phosphate) totally 20 parts again, stir 2.5 hours again, testing sol solution molding time by the little skill in using a kitchen knife in cookery is 460s, fire retarding epoxide resin sol solution is prepared complete.
By the woven fiber glass of dipped fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature, obtained glass cloth prepreg (semicure) sheet.
Prepreg is cut into desired size, by processing requirement lay, combine after, high temperature resistant release film on the pad of two sides, sends into and the vacuum hotpressing machine of formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down obtained high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 732Mpa, and tensile strength is 727Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94V-0 level), excellent arc resistance (reaching 178s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 16
In a kettle., add phosphorous epoxy resin (structural formula (3)) 100 parts, containing the epoxy hardener (structural formula (i)) 7.6 parts of P-structure, 2-ethyl-4-methylimidazole 0.05 part, toluene and methylethylketone totally 54 parts, stirs 50 minutes, add organophosphorous fire retardant (structural formula (d)) and inorganic combustion inhibitor (aluminum trihydrate) totally 17 parts again, stir 2.6 hours again, be 580s by little skill in using a kitchen knife in cookery test sol solution molding time, fire retarding epoxide resin sol solution is prepared complete.
By the woven fiber glass of dipped fire retarding epoxide resin glue by vertical glue dipping machine, by controlling extrusion roll speed, linear speed, wind-warm syndrome and furnace temperature, obtained glass cloth prepreg (semicure) sheet.
Prepreg is cut into desired size, by processing requirement lay, combine after, high temperature resistant release film on the pad of two sides, sends into and the vacuum hotpressing machine of formed product particular manufacturing craft is housed, set press temperature, pressure size, time and vacuum parameters, press down obtained high-strength insulating supporting beam.The insulating supporting deflection of beam intensity of the present embodiment is 732Mpa, and tensile strength is 727Mpa, has high physical strength.The insulating supporting beam of the present embodiment has excellent flame retardant resistance (reaching UL94V-0 level), excellent arc resistance (reaching 179s), excellent proof tracking (PTI is up to 600V) performance.
Embodiment 17
Phosphorous epoxy resin (structural formula (5)) 100 parts, containing the epoxy hardener (structural formula (j)) 3 parts of P-structure, N, N dimethyl benzylamine 0.01 part, glycol dimethyl ether 50 parts, organophosphorous fire retardant (structural formula (e)) 10 parts.
Embodiment 18
Phosphorous epoxy resin (structural formula (8)) 100 parts, containing the epoxy hardener (structural formula (k)) 10 parts of P-structure, triethylamine 5 parts, pimelinketone 80 parts, organophosphorous fire retardant (structural formula (h)) 40 parts.
Embodiment 19
Phosphorous epoxy resin (structural formula (3)) 100 parts, containing the epoxy hardener (structural formula (l)) 6 parts of P-structure, 2-ethyl imidazol(e) 3 parts, dimethyl formamide 52 parts, organophosphorous fire retardant (structural formula (c)) 33 parts.
Embodiment 20
Phosphorous epoxy resin (structural formula (2)) 100 parts, containing the epoxy hardener (structural formula (m)) 7 parts of P-structure, N, N dimethyl benzylamine 0.25 part, glycol dimethyl ether 65 parts, organophosphorous fire retardant (structural formula (d)) 27 parts.
High-strength insulating supporting beam of the present invention has light weight, excellent flame retardant resistance (reaching UL94V-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), insulating supporting beam is not needed to make thicker thickness, just heavy lift can be born, the insulating supporting of large-scale electric equipment and large equipment can be applicable to, reduce cost of manufacture simultaneously and be convenient to transport simultaneously; Reduce the mounting height of electrical equipment, 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, special die production can also be utilized as required to go out required shape simultaneously, improve Practical Performance of the present invention.
Claims (7)
1. a high-strength insulating supporting beam, is characterized in that: by the U-shaped structure of glass cloth prepreg slaking; Described glass cloth prepreg infiltrates to have the woven fiber glass of fire retarding epoxide resin sol solution, described fire retarding epoxide resin sol solution to be in fire retarding epoxide resin, add the sol solution that solidifying agent, curing catalyst, solvent and fire retardant make; The following ratio of solidifying agent, curing catalyst, solvent, fire retardant is configured;
Solidifying agent: the 3-10% accounting for fire retarding epoxide resin solid weight;
Curing catalyst: the 0.01-5% accounting for fire retarding epoxide resin solid weight;
Solvent: the 50-80% accounting for fire retarding epoxide resin solid weight;
Fire retardant: the 10-40% accounting for fire retarding epoxide resin solid weight;
Described fire retarding epoxide resin is the combination of phosphorous epoxy resin or phosphorous epoxy resin and halogen-free epoxy resin;
Described solidifying agent promotor is the one in 2-phenylimidazole, N, N-dimethyl benzylamine, DMA, trolamine, triethylamine or 2,4,6-tri-(dimethylamino methyl) phenol;
Described solidifying agent is any one of aliphatic diamine, aromatic diamine or the following epoxy hardener containing P-structure;
。
2. high-strength insulating supporting beam according to claim 1, is characterized in that: described halogen-free epoxy resin is the one in bisphenol A diglycidyl ether, Bisphenol F diglycidylether, bisphenol-S diglycidyl ether, novolac polyglycidyl ether or glycidyl amine type epoxy resin.
3. high-strength insulating supporting beam according to claim 1, is characterized in that: described aliphatic diamine is quadrol, butanediamine or hexanediamine; Described aromatic diamine is 4,4-diaminodiphenylmethane, 4,4-diaminodiphenylsulfone(DDS)s or 4,4-diaminodiphenyl oxide.
4. 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 ether acetate, methylethylketone, pimelinketone or acetone.
5. 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.
6. high-strength insulating supporting beam according to claim 5, 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.
7., according to the arbitrary described high-strength insulating supporting beam of claim 1-6, its preparation method comprises the following steps:
(1) prepare fire retarding epoxide resin sol solution: get the raw materials ready according to raw material, first add solvent, after fire retarding epoxide resin, solidifying agent, solidifying agent promotor stirs, then add fire retardant stir after obtained fire retarding epoxide resin sol solution;
(2) glass cloth prepreg is prepared: the woven fiber glass of the resin adhesive liquid in dipped step (1) is obtained glass cloth prepreg by vertical glue dipping machine;
(3) compression moulding: shaping with mould pressed glass cloth prepreg in thermocompressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310382093.4A CN103408903B (en) | 2013-08-28 | 2013-08-28 | A kind of high-strength insulating supporting beam and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310382093.4A CN103408903B (en) | 2013-08-28 | 2013-08-28 | A kind of high-strength insulating supporting beam and preparation method thereof |
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| CN103408903A CN103408903A (en) | 2013-11-27 |
| CN103408903B true CN103408903B (en) | 2015-12-02 |
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| CN105317835B (en) * | 2015-11-27 | 2018-05-11 | 四川迪弗电工科技有限公司 | One kind insulation molding slide |
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| TWI779050B (en) * | 2018-06-15 | 2022-10-01 | 達興材料股份有限公司 | Resin composition and lamination method for semiconductor substrates by using the same |
| CN109161000A (en) * | 2018-07-27 | 2019-01-08 | 武汉工程大学 | A kind of application of new compound DOPO-MA in epoxy-resin systems |
| CN110885428B (en) * | 2018-09-07 | 2022-06-28 | 广东生益科技股份有限公司 | Halogen-free thermosetting resin composition, prepreg using same, laminated board and printed circuit board |
| CN110467795B (en) * | 2019-08-09 | 2021-02-23 | 大连理工大学 | Low-viscosity liquid oxygen compatible epoxy resin system for wet-process fiber winding and preparation method thereof |
| US20220372209A1 (en) * | 2020-02-10 | 2022-11-24 | Toray Industries, Inc. | Epoxy resin composition, prepreg and fiber-reinforced composite material |
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