CN108239330B - Irradiation crosslinking low-smoke halogen-free flame retardant for automobile wire and preparation method thereof - Google Patents
Irradiation crosslinking low-smoke halogen-free flame retardant for automobile wire and preparation method thereof Download PDFInfo
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08L2201/22—Halogen free composition
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- C08L2203/00—Applications
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- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
Abstract
The invention provides an irradiation crosslinking low-smoke halogen-free flame retardant for an automobile wire and a preparation method thereof, wherein the irradiation crosslinking low-smoke halogen-free flame retardant for the automobile wire comprises the following raw materials in parts by weight: 30-60 parts of base material resin; 10-25 parts of a compatilizer; 15-35 parts of a flame retardant; 5-10 parts of a filler; 0.75-1.35 parts of antioxidant; 2.5-5 parts of a lubricant; 1.5 to 2.5 parts of a crosslinking sensitizer. The prepared irradiation crosslinking low-smoke halogen-free flame retardant for the automobile wire not only has the excellent performances of low material density, halogen-free environmental protection, flame retardance and high wear resistance, but also has the advantages of chemical corrosion resistance, ultralow temperature resistance, excellent mechanical property, excellent production extrusion processing performance and capability of meeting the requirement of high-speed production.
Description
Technical Field
The invention relates to the field of wire and cable high polymer materials, and particularly discloses an irradiation crosslinking low-smoke halogen-free flame retardant for an automobile wire and a preparation method thereof.
Background
In recent years, the automobile industry in the whole world still develops rapidly, the domestic automobile industry in China also develops at a pace and at a high speed, and meanwhile, the performance requirements on various automobile accessories and the like are higher and higher. The raw materials of the traditional automobile wire insulating layer are almost all polyvinyl chloride materials. Although polyvinyl chloride has the advantages of low price, convenient processing and the like, polyvinyl chloride has the defects of low decomposition temperature, poor high temperature resistance and the like, thereby not only restricting the development of the polyvinyl chloride, but also limiting the use occasions. The high-speed development of the industry puts forward higher requirements on the linear performance of automobiles, such as high and low temperature resistance, high scratch and abrasion resistance, oil resistance, liquid corrosion resistance for various automobiles and the like, and meanwhile, environmental protection and halogen free are inevitable development trends; with the gradual development of new energy automobiles in the market, more solutions are sought for the light weight problem of the traditional fuel oil automobile; at present, automobile wire insulation layers made of irradiation crosslinking halogen-free flame retardant polyolefin materials in the market have the defects of poor aging resistance, poor scraping and abrasion resistance, poor processing performance and low extrusion speed, and meanwhile, the material density is high, the energy-saving requirement is not facilitated, and the requirement of automobile thin-wall wires with the temperature resistance level of 125 ℃ is difficult to meet. Therefore, it is needed to develop a low-smoke halogen-free flame retardant material with high and low temperature resistance and environmental protection to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an irradiation crosslinking low-smoke halogen-free flame retardant for an automobile wire and a preparation method thereof.
In order to achieve the above purpose, the invention is realized by the following technical scheme: an irradiation crosslinking low-smoke halogen-free flame retardant for automobile wires comprises the following raw materials in parts by weight: 30-60 parts of base material resin; 10-25 parts of a compatilizer; 15-35 parts of a flame retardant; 5-10 parts of a filler; 0.75-1.35 parts of antioxidant; 2.5-5 parts of a lubricant; 1.5 to 2.5 parts of a crosslinking sensitizer.
Preferably, the irradiation crosslinking low-smoke halogen-free flame retardant for the automobile wire comprises the following raw materials in parts by weight: 40-50 parts of base material resin; 10-20 parts of a compatilizer; 25-30 parts of a flame retardant; 6-8 parts of a filler; 0.9-1.1 parts of antioxidant; 3-3.5 parts of a lubricant; 1.8-2.0 parts of a crosslinking sensitizer.
Preferably, the base resin is selected from one or more of linear low density polyethylene, ethylene-butyl acrylate copolymer and ethylene-propylene copolymer resin.
More preferably, the base resin is selected from the group consisting of a mixture of linear low density polyethylene, ethylene-butyl acrylate copolymer and ethylene-propylene copolymer resins. Wherein, based on the total weight of the base material resin, the linear low density polyethylene accounts for 50 to 66 percent; the ethylene-butyl acrylate copolymer accounts for 17 to 25 percent of the mass percent of the base material resin; the ethylene-propylene copolymer resin accounts for 17-30% of the base resin by mass.
More preferably, the linear low density polyethylene has a melt index of 0.4 to 2.5g/10min under a load of 2.16kg at 190 ℃ and a density of 0.900 to 0.950g/cm3. More preferably, the linear low density polyethylene has a melt index of 0.5 to 2.0g/10min under a load of 2.16kg at 190 ℃ and a density of 0.920 to 0.935g/cm3。
More preferably, the ethylene-butyl acrylate copolymer has a melt index of 3.5 to 4.5g/10min at 190 ℃ under a load of 2.16 kg; the density is 0.90-1.00g/cm3The content of butyl acrylate is 25-28 wt%. Further preferably, the ethylene-butyl acrylate copolymer has a melt index of 4.0g/10min at 190 ℃ under a load of 2.16 kg; the density was 0.926g/cm3The butyl acrylate content was 27% by weight.
More preferably, the ethylene-propylene copolymer resin has a melt index of 1.0 to 4.0g/10min under a load of 2.16kg at 190 ℃, wherein the ethylene content is 5 to 35% by mole. More preferably, the ethylene-propylene copolymer resin has a melt index of 2.0 to 3.5g/10min under a load of 2.16kg at 190 ℃, wherein the ethylene content is 10 to 25 mol%.
Preferably, the compatibilizer is one or two selected from the group consisting of an ethylene-octene copolymer grafted maleic anhydride copolymer and a polyethylene grafted maleic anhydride copolymer.
More preferably, the melt index of the ethylene-octene copolymer grafted maleic anhydride copolymer is 0.5-2.9 g/10min under the load of 2.16kg at 190 ℃, and the grafting rate is 0.5-1.0%. More preferably, the ethylene-octene copolymer grafted maleic anhydride copolymer has a melt index of 0.8-2.5 g/10min and a grafting rate of 0.8% under a load of 2.16kg at 190 ℃.
More preferably, the melt index of the polyethylene grafted maleic anhydride copolymer is 0.5-2.3 g/10min under the load of 2.16kg at 190 ℃, and the grafting rate is 0.8-1.5%. Further preferably, the melt index of the polyethylene grafted maleic anhydride copolymer at 190 ℃ under the load of 2.16kg is 1.0-1.9 g/10min, and the grafting rate is 1.2%.
Preferably, the flame retardant is selected from any one or more of melamine polyphosphate, high molecular weight ammonium polyphosphate and diethyl aluminum hypophosphite.
More preferably, the flame retardant is a combination of both melamine polyphosphate and high molecular weight ammonium polyphosphate, and the mass ratio of the melamine polyphosphate to the high molecular weight ammonium polyphosphate is 3: 1. further preferably, the polymerization degree of the high molecular weight ammonium polyphosphate is greater than 1000.
Preferably, the filler is selected from one or two of ultrafine silica powder and calcium carbonate silica gel master batch.
More preferably, the filler is a combination of ultrafine silica powder and calcium carbonate silica gel master batches, and the mass ratio of the ultrafine silica powder to the calcium carbonate silica gel master batches is 2: 1. Wherein the average particle size of the superfine silicon dioxide powder is 1.1 mu m, and the calcium carbonate silica gel master batch is prepared from nano calcium carbonate and methyl vinyl silicone rubber in a mass ratio of 7: 3, the average grain size of the nano calcium carbonate is 700 nm; the molecular weight of the methyl vinyl silicone rubber is 45-80 ten thousand, and the vinyl content is 21-24%.
Preferably, the antioxidant is selected from one or more of antioxidant 1010, antioxidant 168 and antioxidant DLTP.
More preferably, the antioxidant is a combination of an antioxidant 1010, an antioxidant 168 and an antioxidant DLTP, and the mass ratio of the antioxidant 1010 to the antioxidant 168 to the antioxidant DLTP is 12:2: 1.
More preferably, the antioxidant 1010 is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
More preferably, the antioxidant 168 is tris (2, 4-di-tert-butylphenyl) phosphite.
More preferably, the antioxidant DLTP is dilauryl thiodipropionate.
Preferably, the lubricant is one or more of magnesium stearate, calcium stearate and polyethylene wax.
More preferably, the lubricant is a combination of magnesium stearate, calcium stearate and polyethylene wax, and the mass ratio of the magnesium stearate, the calcium stearate and the polyethylene wax is 2:1: 1. Further preferably, the polyethylene wax has a molecular weight of 1000-.
Preferably, the crosslinking sensitizer is triallyl isocyanurate.
The invention also discloses a method for preparing the irradiation crosslinking low-smoke halogen-free flame retardant for the automobile wire, which comprises the following steps:
1) uniformly mixing the raw materials in a high-speed mixer according to the proportion;
2) putting the mixed raw materials in the step 1) into an internal mixer for mixing to obtain a bulk plastic semi-finished product;
3) and putting the bulk plastic semi-finished product into a double-screw extruder for extrusion granulation to prepare the irradiation crosslinking low-smoke halogen-free flame retardant for the automobile line.
Preferably, the rotating speed of the high-speed mixer is 400-500 rpm, and the mixing time is 2-4 min.
Preferably, the mixing temperature is 155-165 ℃, and the mixing time is 10-12 min.
Preferably, the twin-screw extruder comprises ten temperature sections, wherein the temperatures of the first to ten sections are 138-.
The invention also discloses an irradiation crosslinking low-smoke halogen-free flame-retardant cable material for the automobile wire, which is obtained by extruding the irradiation crosslinking low-smoke halogen-free flame-retardant material for the automobile wire through a screw and performing an irradiation crosslinking process.
Preferably, the irradiation dose used in the irradiation crosslinking process is 13-15 Mrad, and the thermal extension value after 15min is controlled within the range of 20-50% at the temperature of 200 ℃ and under the load of 0.2 MPa.
In summary, the invention provides an irradiation crosslinking low-smoke halogen-free flame retardant for automobile wire and a preparation method thereof, and the invention has the following beneficial effects:
the prepared irradiation crosslinking low-smoke halogen-free flame retardant for the automobile wire has the excellent performances of low material density, no halogen, environmental protection, flame retardance and high wear resistance, also resists various automobile oils and corrosive liquids, resists chemical corrosion, ultralow temperature and excellent mechanical property, has excellent production extrusion processing performance, can meet the requirement of high-speed production, has the cable extrusion speed of 800m/min or more, and can meet the performance use requirement of 125-DEG C resistant automobile wire harnesses.
Detailed Description
The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
The linear low density polyethylene adopted in the embodiment of the invention has a melt index of 0.5-2.0 g/10min and a density of 0.920-0.935 g/cm under the condition of 190 ℃ and 2.16kg load3. The ethylene-butyl acrylate copolymer had a melt index of 4.0g/10min and a density of 0.926g/cm under a load of 2.16kg at 190 ℃3The butyl acrylate content was 27wt.% of the total weight of the composition. The ethylene-propylene copolymer resin has a melt index of 2.0-3.5 g/10min under a load of 2.16kg at 190 ℃, wherein the molar content of ethylene is 10-25%. The polyethylene grafted maleic anhydride copolymer adopted in the embodiment has a melt index of 1.0-1.9 g/10min under the condition of 190 ℃ and 2.16kg load, and the grafting rate is 1.2%. The ethylene-octene copolymer used in the examples is grafted with maleic anhydride copolymer, the melt index is 0.8-2.5 g/10min under the condition of 190 ℃ and 2.16kg load, and the grafting rate is 0.8%.
Example 1
An irradiation crosslinking low-smoke halogen-free flame-retardant material for automobile wires comprises the following raw material components in parts by weight: 30 parts of base material resin; 10 parts of a compatilizer; 15 parts of a flame retardant; 5 parts of a filling agent; 0.75 part of antioxidant; 2.5 parts of a lubricant; 1.5 parts of a sensitizer.
Wherein the linear low density polyethylene accounts for 66 percent of the total weight of the base material resin; ethylene-butyl acrylate copolymer 17%; the ethylene-propylene copolymer resin accounted for 17%.
The compatilizer is polyethylene grafted maleic anhydride copolymer.
The flame retardant is a combination of melamine polyphosphate and high molecular weight ammonium polyphosphate, and the mass ratio of the melamine polyphosphate to the high molecular weight ammonium polyphosphate is 3: 1.
the filler is a combination of superfine silica powder and calcium carbonate silica gel master batches, and the mass ratio of the superfine silica powder to the calcium carbonate silica gel master batches is 2: 1.
The antioxidant is a combination of an antioxidant 1010, an antioxidant 168 and an antioxidant DLTP, and the mass ratio of the antioxidant 1010 to the antioxidant 168 to the antioxidant DLTP is 12:2: 1.
The lubricant is formed by combining magnesium stearate, calcium stearate and polyethylene wax, the mass ratio of the magnesium stearate to the calcium stearate to the polyethylene wax is 2:1:1, and the MW range of the polyethylene wax is 1000-5000-.
The preparation method comprises the following steps: (1) mixing the raw materials uniformly at a speed of 400 rpm by a high-speed mixer according to the proportion for 2 minutes; (2) and (3) placing the mixed raw materials into an internal mixer, and mixing for 10 minutes at the temperature of 155 ℃ to obtain a bulk plastic semi-finished product. (3) Feeding the bulk plastic semi-finished product into a double screw extruder to extrude and granulate, wherein the particle length is about 2-3 mm, and the particle size is about 2mm, so as to obtain the irradiation crosslinking low-smoke halogen-free flame retardant material particles. Wherein the temperature of the particular screw extruder is set as: the first zone of the cylinder is 140 ℃, the second zone of the cylinder is 150 ℃, the third zone of the cylinder is 155 ℃, the fourth zone of the cylinder is 160 ℃, the fifth zone of the cylinder is 170 ℃, the sixth zone of the cylinder is 175 ℃, the seventh zone of the cylinder is 175 ℃, the eighth zone of the cylinder is 180 ℃, and the head and the die are 180 ℃ and 170 ℃ respectively.
Example 2
An irradiation crosslinking low-smoke halogen-free flame-retardant material for automobile wires comprises the following raw material components in parts by weight: 40 parts of base material resin; 15 parts of a compatilizer; 25 parts of a flame retardant; 5 parts of a filling agent; 0.9 part of antioxidant; 3 parts of a lubricant; and 2 parts of a sensitizer.
Wherein the linear low density polyethylene accounts for 50 percent of the total weight of the base material resin; ethylene-butyl acrylate copolymer 25%; the ethylene-propylene copolymer resin accounted for 25%.
The compatilizer is ethylene-octene copolymer grafted maleic anhydride copolymer.
The flame retardant is a combination of melamine polyphosphate and high molecular weight ammonium polyphosphate, and the mass ratio of the melamine polyphosphate to the high molecular weight ammonium polyphosphate is 3: 1.
the filler is a combination of superfine silica powder and calcium carbonate silica gel master batches, and the mass ratio of the superfine silica powder to the calcium carbonate silica gel master batches is 2: 1.
The antioxidant is a combination of an antioxidant 1010, an antioxidant 168 and an antioxidant DLTP, and the mass ratio of the antioxidant 1010 to the antioxidant 168 to the antioxidant DLTP is 12:2: 1.
The lubricant is a combination of magnesium stearate, calcium stearate and polyethylene wax, and the mass ratio of the magnesium stearate to the calcium stearate to the polyethylene wax is 2:1: 1. The MW range of the polyethylene wax is 1000-5000.
The preparation method comprises the following steps: (1) mixing the raw materials uniformly at a speed of 500 rpm by a high-speed mixer according to the proportion for 3 minutes; (2) and (3) placing the mixed raw materials into an internal mixer, and mixing for 11 minutes at the temperature of 160 ℃ to obtain a bulk plastic semi-finished product. (3) Feeding the bulk plastic semi-finished product into a double screw extruder to extrude and granulate, wherein the particle length is about 2-3 mm, and the particle size is about 2mm, so as to obtain the irradiation crosslinking low-smoke halogen-free flame retardant material particles. Wherein the temperature of the particular screw extruder is set as: the first zone of the cylinder is 140 ℃, the second zone of the cylinder is 150 ℃, the third zone of the cylinder is 155 ℃, the fourth zone of the cylinder is 160 ℃, the fifth zone of the cylinder is 170 ℃, the sixth zone of the cylinder is 175 ℃, the seventh zone of the cylinder is 175 ℃, the eighth zone of the cylinder is 180 ℃, and the head and the die are 180 ℃ and 170 ℃ respectively.
Example 3
An irradiation crosslinking low-smoke halogen-free flame-retardant material for automobile wires comprises the following raw material components in parts by weight: 50 parts of base material resin; 15 parts of a compatilizer; 30 parts of a flame retardant; 8 parts of a filling agent; 1.1 parts of an antioxidant; 3.5 parts of a lubricant; and 2 parts of a sensitizer.
Wherein the linear low density polyethylene accounts for 50 percent of the total weight of the base material resin; ethylene-butyl acrylate copolymer 30%; the ethylene-propylene copolymer resin accounted for 20%.
The compatilizer is an ethylene-octene copolymer grafted maleic anhydride copolymer.
The flame retardant is a combination of melamine polyphosphate and high molecular weight ammonium polyphosphate, and the mass ratio of the melamine polyphosphate to the high molecular weight ammonium polyphosphate is 3: 1.
the filler is a combination of superfine silica powder and calcium carbonate silica gel master batches, and the mass ratio of the superfine silica powder to the calcium carbonate silica gel master batches is 2: 1.
The antioxidant is a combination of an antioxidant 1010, an antioxidant 168 and an antioxidant DLTP, and the mass ratio of the antioxidant 1010 to the antioxidant 168 to the antioxidant DLTP is 12:2: 1.
The lubricant is a combination of magnesium stearate, calcium stearate and polyethylene wax, and the mass ratio of the magnesium stearate to the calcium stearate to the polyethylene wax is 2:1: 1. The polyethylene wax has a MW in the range of 1000-5000.
The preparation method is the same as that of example 2.
Example 4
An irradiation crosslinking low-smoke halogen-free flame-retardant material for automobile wires comprises the following raw material components in parts by weight: 60 parts of base material resin; 25 parts of a compatilizer; 35 parts of a flame retardant; 10 parts of a filling agent; 1.35 parts of an antioxidant; 5 parts of a lubricant; and 2.5 parts of a sensitizer.
Wherein the linear low density polyethylene accounts for 75 percent of the total weight of the base material resin; the ethylene-propylene copolymer resin accounted for 25%.
The compatilizer is the combination of ethylene-octene copolymer grafted maleic anhydride copolymer and polyethylene grafted maleic anhydride copolymer. Wherein, the ethylene-octene copolymer grafted maleic anhydride copolymer accounts for 60 percent and the polyethylene grafted maleic anhydride copolymer accounts for 40 percent based on the total weight of the compatilizer.
The flame retardant is a combination of melamine polyphosphate and high molecular weight ammonium polyphosphate, and the mass ratio of the melamine polyphosphate to the high molecular weight ammonium polyphosphate is 3: 1.
the filler is a combination of superfine silica powder and calcium carbonate silica gel master batches, and the mass ratio of the superfine silica powder to the calcium carbonate silica gel master batches is 2: 1.
The antioxidant is a combination of an antioxidant 1010, an antioxidant 168 and an antioxidant DLTP, and the mass ratio of the antioxidant 1010 to the antioxidant 168 to the antioxidant DLTP is 12:2: 1.
The lubricant is a combination of magnesium stearate, calcium stearate and polyethylene wax, and the mass ratio of the magnesium stearate to the calcium stearate to the polyethylene wax is 2:1: 1. The MW range of the polyethylene wax is 1000-5000.
The preparation method comprises the following steps: (1) mixing the raw materials uniformly at a speed of 500 rpm by a high-speed mixer according to the proportion for 4 minutes; (2) placing the mixed raw materials into an internal mixer, and mixing for 12 minutes at the temperature of 165 ℃ to obtain a bulk plastic semi-finished product; (3) feeding the bulk plastic semi-finished product into a double screw extruder to extrude and granulate, wherein the particle length is about 2-3 mm, and the particle size is about 2mm, so as to obtain the irradiation crosslinking low-smoke halogen-free flame retardant material particles. Wherein the temperature of the particular screw extruder is set as: the first zone of the cylinder is 140 ℃, the second zone of the cylinder is 150 ℃, the third zone of the cylinder is 155 ℃, the fourth zone of the cylinder is 160 ℃, the fifth zone of the cylinder is 170 ℃, the sixth zone of the cylinder is 175 ℃, the seventh zone of the cylinder is 175 ℃, the eighth zone of the cylinder is 180 ℃, and the head and the die are 180 ℃ and 170 ℃ respectively.
Performance testing
The cross-linked low-smoke halogen-free flame retardant of the embodiment 1 to 4 is tabletted by the following process: tabletting by using a flat vulcanizing machine, wherein the tabletting temperature is 175 ℃, the preheating time is 10 minutes, the pressure maintaining time is 5 minutes, and tabletting is carried out by using dies with different fixed specifications, so that the obtained tablets have the thicknesses of 1mm, 2mm and 3mm, the lengths of 25mm and the widths of 20mm respectively.
The irradiation treatment process of the pressed sheet comprises the following steps: the irradiation dose is 13-15 Mrad, and the thermal extension value after 15min is controlled within the range of 20-50% at the temperature of 200 ℃ and under the load of 0.2 MPa.
Table 1 shows the heat elongation test as the heat elongation value obtained by testing a 1 mm-thick pellet after irradiation treatment; the low-temperature impact embrittlement test adopts 2 mm-thick tabletting, the oxygen index test adopts 3 mm-thick tabletting, and the rest is 1 mm-thick tabletting.
TABLE 1 Performance test results of irradiation cross-linked LSOH flame-retardant cable material for automobile wire
As can be seen from table 1, the irradiation cross-linking low-smoke halogen-free flame-retardant cable material for the automotive wire in the embodiments 1 to 4 has low material density, is environment-friendly and halogen-free; the flame-retardant rubber has high wear resistance, resistance to various automobile oil products and corrosive liquid, chemical corrosion resistance, ultralow temperature resistance, excellent mechanical property, good flame-retardant effect, excellent production extrusion processability and capability of meeting the requirement of high-speed production; can meet the performance use requirement of the automobile wire harness with the temperature resistance of 125 ℃.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that the foregoing and other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides an irradiation crosslinking low smoke and zero halogen hinders fuel for car line which characterized in that: the feed comprises the following raw materials in parts by weight:
1.5-2.5 parts of a crosslinking sensitizer; the base material resin is selected from a mixture of linear low density polyethylene, ethylene-butyl acrylate copolymer and ethylene-propylene copolymer resin, wherein the linear low density polyethylene accounts for 50-66% of the total weight of the base material resin; the ethylene-butyl acrylate copolymer accounts for 17 to 25 percent of the mass percent of the base material resin; the ethylene-propylene copolymer resin accounts for 17-30% of the base resin by mass, the compatilizer is one or two of an ethylene-octene copolymer grafted maleic anhydride copolymer and a polyethylene grafted maleic anhydride copolymer, and the flame retardant is one or more of melamine polyphosphate, high molecular weight ammonium polyphosphate and diethyl aluminum hypophosphite.
2. The radiation crosslinking low smoke zero halogen flame retardant for the automobile wire as claimed in claim 1, characterized in that: the filler is selected from one or two of superfine silica powder and calcium carbonate silica gel master batch.
3. The radiation crosslinking low smoke zero halogen flame retardant for the automobile wire as claimed in claim 1, characterized in that: the antioxidant is selected from one or more of antioxidant 1010, antioxidant 168 and antioxidant DLTP.
4. The radiation crosslinking low smoke zero halogen flame retardant for the automobile wire as claimed in claim 1, characterized in that: the lubricant is one or more of magnesium stearate, calcium stearate and polyethylene wax.
5. The radiation crosslinking low smoke zero halogen flame retardant for the automobile wire as claimed in claim 1, characterized in that: the crosslinking sensitizer is triallyl isocyanurate.
6. A method for preparing the irradiation crosslinking low smoke zero halogen flame retardant for the automobile wire according to any one of claims 1 to 5, which comprises the following steps:
1) uniformly mixing the raw materials in a high-speed mixer according to the proportion;
2) putting the mixed raw materials in the step 1) into an internal mixer for mixing to obtain a bulk plastic semi-finished product;
3) and putting the bulk plastic semi-finished product into a double-screw extruder for extrusion granulation to prepare the irradiation crosslinking low-smoke halogen-free flame retardant for the automobile line.
7. An irradiation crosslinking low-smoke halogen-free flame-retardant cable material for automobile wires, which is obtained by extruding the irradiation crosslinking low-smoke halogen-free flame-retardant material for the automobile wires according to any one of claims 1 to 5 through a screw and performing an irradiation crosslinking process.
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| CN109320839B (en) * | 2018-09-11 | 2021-03-26 | 上海日之升科技有限公司 | Photodiffusion polypropylene composite material for LED |
| CN109422961B (en) * | 2018-09-11 | 2021-03-26 | 上海日之升科技有限公司 | Flame-retardant light-diffusion polypropylene composite material for LED and product thereof |
| CN110818981A (en) * | 2019-10-29 | 2020-02-21 | 昆山勃盛电子有限公司 | Low-smoke flame-retardant cable material for locomotive and preparation method thereof |
| CN110903526A (en) * | 2019-11-18 | 2020-03-24 | 西安思后网络科技有限公司 | Crosslinked ethylene flame-retardant cable material and preparation method thereof |
| CN113087992B (en) * | 2021-04-08 | 2022-09-13 | 重庆丰驰实业有限公司 | Low-smoke halogen-free flame-retardant sheath material and preparation method thereof |
| CN114702747B (en) * | 2022-03-15 | 2023-09-26 | 金发科技股份有限公司 | High-temperature-resistant high-oxygen-aging polyolefin material and preparation method and application thereof |
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