阅读说明：本技术 一种高阻燃接线盒 (High flame-retardant junction box ) 是由 余昌国 罗聪 于 2020-11-05 设计创作，主要内容包括：本发明公开了一种高阻燃接线盒,其盒体的原料按重量份包括：ABS树脂45-65份、PC树脂35-55份、EPDM 2-5份、顺丁橡胶3-9份、MBS树脂2-5份、ABS-g-MAH 2-5份、有机硅-丙烯酸酯共聚物1-3份、抗氧剂1-5份、玻璃纤维1-2份、改性纳米二氧化钛3-9份、蒙脱土1-8份、钛酸钾1-3份、粉煤灰2-5份、水杨酸铜配合物0.3-2份、复合阻燃剂9-15份、增塑剂3-7份；复合阻燃剂为磷酸酯、2-甲基-2,5-二氧-1,2-氧磷杂环戊烷、次磷酸铝、全氟丁基磺酸钾、三(2-羟乙基)异氰脲酸酯、聚磷酸铵的混合物。本发明提出的高阻燃接线盒,阻燃性和耐老化性好,使用安全且寿命长。(The invention discloses a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 45-65 parts of ABS resin, 35-55 parts of PC resin, 2-5 parts of EPDM (ethylene-propylene-diene monomer), 3-9 parts of butadiene rubber, 2-5 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 2-5 parts of ABS-g-MAH (maleic anhydride-maleic anhydride), 1-3 parts of organosilicon-acrylate copolymer, 1-5 parts of antioxidant, 1-2 parts of glass fiber, 3-9 parts of modified nano titanium dioxide, 1-8 parts of montmorillonite, 1-3 parts of potassium titanate, 2-5 parts of fly ash, 0.3-2 parts of copper salicylate complex, 9-15 parts of composite flame retardant and 3-7 parts of plasticizer; the composite flame retardant is a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate. The high-flame-retardant junction box provided by the invention has the advantages of good flame retardance and aging resistance, safety in use and long service life.)

1. The high flame-retardant junction box is characterized in that the box body comprises the following raw materials in parts by weight: 45-65 parts of ABS resin, 35-55 parts of PC resin, 2-5 parts of EPDM (ethylene-propylene-diene monomer), 3-9 parts of butadiene rubber, 2-5 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 2-5 parts of ABS-g-MAH (maleic anhydride-maleic anhydride), 1-3 parts of organosilicon-acrylate copolymer, 1-5 parts of antioxidant, 1-2 parts of glass fiber, 3-9 parts of modified nano titanium dioxide, 1-8 parts of montmorillonite, 1-3 parts of potassium titanate, 2-5 parts of fly ash, 0.3-2 parts of copper salicylate complex, 9-15 parts of composite flame retardant and 3-7 parts of plasticizer;

the composite flame retardant is a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate.

2. The junction box with high flame retardance as claimed in claim 1, wherein the antioxidant is one or a mixture of more of an antioxidant DLTP, an antioxidant 1010 and an antioxidant T-531.

3. The high-flame-retardant junction box according to claim 1, wherein the preparation process of the modified nano titanium dioxide comprises the following steps: dispersing 3-10 parts of nano titanium dioxide in 50-150 parts of water by weight, adjusting the pH value to 5-6, heating to 55-65 ℃ under the stirring state, dropwise adding a mixture consisting of 0.1-0.9 part of phenyltrimethoxysilane and 0.5-1.3 parts of silane coupling agent KH-602, stirring and reacting for 4-5h after dropwise adding, adding 0.01-0.3 part of hexamethyldisiloxane, stirring and reacting for 10-25min, mixing with 0.5-1.8 parts of N-phenyl-p-phenylenediamine after reaction, stirring for 50-120min at 55-65 ℃, filtering and drying to obtain the modified nano titanium dioxide.

4. The junction box with high flame retardance of claim 1, wherein the phosphate is one or more of tri-tert-butylphenyl phosphate, resorcinol bis (diphenyl phosphate), triphenyl phosphate, triethyl phosphate and triisopropylphenyl phosphate.

5. The junction box with high flame retardance according to claim 1, wherein the weight ratio of the phosphate to the 2-methyl-2, 5-dioxo-1, 2-oxyphospholane to the aluminum hypophosphite to the potassium perfluorobutylsulfonate to the tris (2-hydroxyethyl) isocyanurate to the ammonium polyphosphate is 9-20: 1-3: 4-8: 2-9: 3-7: 8-20.

6. The high flame retardant junction box of any one of claims 1-5, wherein the plasticizer is one or a mixture of di (2-ethylhexyl) phthalate, epoxidized fatty acid butyl ester, diisooctyl sebacate.

Technical Field

The invention relates to the technical field of junction boxes, in particular to a high-flame-retardant junction box.

Background

The junction box is an indispensable power distribution supply for residences, plants and all buildings, can protect joint parts, and meets the requirements of different working conditions by gradually developing different types of junction boxes at present. However, the existing plastic material for the junction box has the defect of insufficient flame retardant property, when open fire occurs in the environment, the plastic material is easy to burn, so that the cable is burnt at the joint, the normal use is influenced, and in the using process, the plastic material is easy to oxidize under the conditions of light, heat or ultraviolet rays, and the performance and the service life of the product are influenced.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a high-flame-retardant junction box which is excellent in flame-retardant performance, good in aging resistance, safe to use and long in service life.

The invention provides a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 45-65 parts of ABS resin, 35-55 parts of PC resin, 2-5 parts of EPDM (ethylene-propylene-diene monomer), 3-9 parts of butadiene rubber, 2-5 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 2-5 parts of ABS-g-MAH (maleic anhydride-maleic anhydride), 1-3 parts of organosilicon-acrylate copolymer, 1-5 parts of antioxidant, 1-2 parts of glass fiber, 3-9 parts of modified nano titanium dioxide, 1-8 parts of montmorillonite, 1-3 parts of potassium titanate, 2-5 parts of fly ash, 0.3-2 parts of copper salicylate complex, 9-15 parts of composite flame retardant and 3-7 parts of plasticizer;

the composite flame retardant is a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate.

Preferably, the antioxidant is one or a mixture of more of an antioxidant DLTP, an antioxidant 1010 and an antioxidant T-531.

Preferably, the preparation process of the modified nano titanium dioxide comprises the following steps: dispersing 3-10 parts of nano titanium dioxide in 50-150 parts of water by weight, adjusting the pH value to 5-6, heating to 55-65 ℃ under the stirring state, dropwise adding a mixture consisting of 0.1-0.9 part of phenyltrimethoxysilane and 0.5-1.3 parts of silane coupling agent KH-602, stirring and reacting for 4-5h after dropwise adding, adding 0.01-0.3 part of hexamethyldisiloxane, stirring and reacting for 10-25min, mixing with 0.5-1.8 parts of N-phenyl-p-phenylenediamine after reaction, stirring for 50-120min at 55-65 ℃, filtering and drying to obtain the modified nano titanium dioxide.

Preferably, the phosphate ester is one or more of tri-tert-butylphenyl phosphate, resorcinol bis (diphenyl phosphate), triphenyl phosphate, triethyl phosphate and triisopropylphenyl phosphate.

Preferably, the weight ratio of the phosphate, the 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, the aluminum hypophosphite, the potassium perfluorobutylsulfonate, the tris (2-hydroxyethyl) isocyanurate and the ammonium polyphosphate is 9-20: 1-3: 4-8: 2-9: 3-7: 8-20.

Preferably, the plasticizer is one or a mixture of more of di (2-ethylhexyl) phthalate, epoxy fatty acid butyl ester and diisooctyl sebacate.

According to the high-flame-retardant junction box, the raw material of the box body specifically adopts ABS resin as a main material, and PC resin, EPDM, butadiene rubber, MBS resin, ABS-g-MAH and organic silicon-acrylate copolymer are added for matching, so that the compatibility of the system is good, the interfacial tension is low, and the obtained junction box has excellent impact strength, tensile strength, hardness and heat resistance; in the preparation process of the modified nano titanium dioxide, phenyltrimethoxysilane and a silane coupling agent KH-602 are condensed and then decorated on the surface of the nano titanium dioxide, the surface property of the nano titanium dioxide is improved, after the modified nano titanium dioxide is mixed with N-phenyl-p-phenylenediamine, the N-phenyl-p-phenylenediamine is further introduced to the surface of the nano titanium dioxide to obtain the modified nano titanium dioxide, the modified nano titanium dioxide is added into a system, and the N-phenyl-p-phenylenediamine and organic silicon introduced into molecules have an anti-aging effect and are matched with an antioxidant, glass fiber, montmorillonite, potassium titanate, fly ash and a copper salicylate complex, so that the aging resistance and the mechanical property of the junction box are improved, and meanwhile, due to the introduction of the organic silicon, the modified nano titanium dioxide is matched with the montmorillonite, so that the heat; the flame retardant is prepared by compounding a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate, and has the synergistic flame retardant effect of multiple elements of phosphorus, nitrogen and aluminum, so that the release rate of smoke and heat in the combustion process is reduced on the premise of ensuring the tensile strength, fluidity and toughness of the material, the residual carbon content after thermal decomposition is increased, the carbon layer is more compact and complete, heat and oxygen can be better isolated from entering the material, the combustion is inhibited, the release of combustible gas is reduced, and the flame retardant property of the material is improved.

The performance of the box body material is detected, the tensile property is tested according to the GB/T1040 standard, and the test speed is 50 mm/min; the bending performance is tested according to the GB/T9341 standard, and the testing speed is 20 mm/min; the impact property is tested according to the GB/T1843 standard, and the thickness of a test sample strip is 4 mm; testing the vertical combustion grade according to the GB/T2408 vertical combustion standard; the limiting oxygen index is tested according to the GB/T2406.1 standard; tests show that the limited oxygen index is more than or equal to 33.9 percent, the vertical combustion grade (1.6mm) is V-0 grade, the tensile strength is more than or equal to 85MPa, the bending strength is more than or equal to 133MPa, and the notch impact strength is more than or equal to 73KJ/m²(ii) a The retention rate of the impact strength is more than or equal to 97.1 percent after the ultraviolet light is aged for 1000 hours; according to the thermal aging test standard GB/T7141-2008, the tensile strength retention rate is more than or equal to 98.9%, and the impact strength retention rate is more than or equal to 95.3%.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

Example 1

The invention provides a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 65 parts of ABS resin, 35 parts of PC resin, 5 parts of EPDM (ethylene-propylene-diene monomer), 3 parts of butadiene rubber, 5 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 2 parts of ABS-g-MAH (acrylonitrile-butadiene-styrene) copolymer, 5 parts of antioxidant, 1 part of glass fiber, 9 parts of modified nano titanium dioxide, 5 parts of montmorillonite, 3 parts of potassium titanate, 2 parts of fly ash, 2 parts of copper salicylate complex, 9 parts of composite flame retardant and 7 parts of plasticizer;

the composite flame retardant is a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate.

Example 2

The invention provides a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 45 parts of ABS resin, 55 parts of PC resin, 2 parts of EPDM (ethylene-propylene-diene monomer), 9 parts of butadiene rubber, 2 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 5 parts of ABS-g-MAH (acrylonitrile-butadiene-styrene copolymer), 1 part of organic silicon-acrylate copolymer, 1 part of antioxidant DLTP (DLTP), 2 parts of glass fiber, 3 parts of modified nano titanium dioxide, 8 parts of montmorillonite, 1 part of potassium titanate, 5 parts of fly ash, 0.3 part of copper salicylate complex, 15 parts of composite flame retardant and 3 parts of di (2-ethylhexyl) phthalate;

wherein the composite flame retardant is a mixture of tri-tert-butylphenyl phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate; the weight ratio of the tri-tert-butylphenyl phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate is 9: 3: 6: 9: 3: 20;

the preparation process of the modified nano titanium dioxide comprises the following steps: dispersing 3 parts of nano titanium dioxide in 150 parts of water by weight, adjusting the pH value to 5, heating to 65 ℃ under the stirring state, dropwise adding a mixture consisting of 0.1 part of phenyltrimethoxysilane and 0.5 part of silane coupling agent KH-602, stirring for 5 hours after the dropwise adding is finished, adding 0.01 part of hexamethyldisiloxane, stirring for 25 minutes, mixing with 0.5 part of N-phenyl-p-phenylenediamine after the reaction is finished, stirring for 50 minutes at 60 ℃, filtering and drying to obtain the modified nano titanium dioxide.

Example 3

The invention provides a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 62 parts of ABS resin, 38 parts of PC resin, 4 parts of EPDM (ethylene-propylene-diene monomer), 4 parts of butadiene rubber, 3.7 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 3 parts of ABS-g-MAH (acrylonitrile-butadiene-styrene) resin, 3 parts of organic silicon-acrylate copolymer, 10101 parts of antioxidant, T-5311 parts of antioxidant, 1.5 parts of glass fiber, 7.1 parts of modified nano titanium dioxide, 1 part of montmorillonite, 2.6 parts of potassium titanate, 2.8 parts of fly ash, 1.6 parts of copper salicylate complex, 11 parts of composite flame retardant, 4 parts of epoxy fatty acid butyl ester and 2 parts of diisooctyl sebacate;

wherein the composite flame retardant is a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate; the weight ratio of the phosphate to the 2-methyl-2, 5-dioxo-1, 2-oxyphospholane to the aluminum hypophosphite to the potassium perfluorobutylsulfonate to the tris (2-hydroxyethyl) isocyanurate to the ammonium polyphosphate is 20: 1: 4: 5: 5: 8; the phosphate is triphenyl phosphate and triisopropylphenyl phosphate according to a weight ratio of 3: 5 with a mixture of;

the preparation process of the modified nano titanium dioxide comprises the following steps: dispersing 10 parts by weight of nano titanium dioxide in 50 parts by weight of water, adjusting the pH value to 6, heating to 55 ℃ under the stirring state, dropwise adding a mixture consisting of 0.9 part of phenyl trimethoxy silane and 1 part of silane coupling agent KH-602, stirring for reacting for 4 hours after the dropwise adding is finished, adding 0.2 part of hexamethyldisiloxane, stirring for reacting for 10 minutes, mixing with 1.8 parts of N-phenyl-p-phenylenediamine after the reaction is finished, stirring for 90 minutes at 55 ℃, filtering and drying to obtain the modified nano titanium dioxide.

Example 4

The invention provides a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 59 parts of ABS resin, 41 parts of PC resin, 3 parts of EPDM (ethylene-propylene-diene monomer), 8 parts of butadiene rubber, 2.8 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 4.2 parts of ABS-g-MAH (acrylonitrile-butadiene-styrene) resin, 1.9 parts of organosilicon-acrylate copolymer, 1 part of antioxidant DLTP (DLTP), 10101 parts of antioxidant, T-5311.1 parts of antioxidant, 1 part of glass fiber, 4 parts of modified nano titanium dioxide, 6 parts of montmorillonite, 1.7 parts of potassium titanate, 4.3 parts of fly ash, 0.8 part of copper salicylate complex, 13 parts of composite flame retardant, 1 part of di (2-ethylhexyl) phthalate, 1 part of epoxy fatty acid butyl ester and 1 part of diisooctyl sebacate;

wherein the composite flame retardant is a mixture of triphenyl phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate; the weight ratio of triphenyl phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate is 11: 2: 8: 2: 7: 9;

the preparation process of the modified nano titanium dioxide comprises the following steps: dispersing 10 parts by weight of nano titanium dioxide in 60 parts by weight of water, adjusting the pH value to 6, heating to 55 ℃ under the stirring state, dropwise adding a mixture consisting of 0.8 part of phenyltrimethoxysilane and 1.3 parts of silane coupling agent KH-602, stirring for reacting for 4 hours after the dropwise adding is finished, adding 0.3 part of hexamethyldisiloxane, stirring for reacting for 16 minutes, mixing with 1.5 parts of N-phenyl-p-phenylenediamine after the reaction is finished, stirring for 120 minutes at 65 ℃, filtering and drying to obtain the modified nano titanium dioxide.

Example 5

The invention provides a high flame-retardant junction box, which comprises the following raw materials in parts by weight: 60 parts of ABS resin, 40 parts of PC resin, 3.1 parts of EPDM (ethylene-propylene-diene monomer), 6.2 parts of butadiene rubber, 4 parts of MBS (methyl methacrylate-butadiene-styrene) resin, 2.8 parts of ABS-g-MAH (maleic anhydride-maleic anhydride), 2 parts of organosilicon-acrylate copolymer, 10103 parts of antioxidant, 1 part of glass fiber, 5 parts of modified nano titanium dioxide, 4 parts of montmorillonite, 2 parts of potassium titanate, 2.7 parts of fly ash, 1 part of copper salicylate complex, 12 parts of composite flame retardant and 5.2 parts of diisooctyl sebacate;

wherein the composite flame retardant is a mixture of phosphate, 2-methyl-2, 5-dioxo-1, 2-oxyphospholane, aluminum hypophosphite, potassium perfluorobutylsulfonate, tris (2-hydroxyethyl) isocyanurate and ammonium polyphosphate; the weight ratio of the phosphate to the 2-methyl-2, 5-dioxo-1, 2-oxyphospholane to the aluminum hypophosphite to the potassium perfluorobutylsulfonate to the tris (2-hydroxyethyl) isocyanurate to the ammonium polyphosphate is 17: 1.7: 6: 5: 4: 17; the phosphoric acid ester is a mixture of triphenyl phosphate and triethyl phosphate according to the weight ratio of 1: 1;

the preparation process of the modified nano titanium dioxide comprises the following steps: dispersing 7 parts by weight of nano titanium dioxide in 100 parts by weight of water, adjusting the pH value to 5, heating to 60 ℃ under the stirring state, dropwise adding a mixture consisting of 0.3 part of phenyltrimethoxysilane and 1 part of silane coupling agent KH-602, stirring for reacting for 4.5 hours after the dropwise adding is finished, adding 0.1 part of hexamethyldisiloxane, stirring for reacting for 22 minutes, mixing with 0.9 part of N-phenyl-p-phenylenediamine after the reaction is finished, stirring for 100 minutes at 58 ℃, filtering and drying to obtain the modified nano titanium dioxide.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.