CN102295809B - Silane crosslinking halogen-free antiflaming ethyl-propylene insulating material and preparation method thereof - Google Patents
Silane crosslinking halogen-free antiflaming ethyl-propylene insulating material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a silane crosslinking halogen-free antiflaming ethyl-propylene insulating material. The material consists of a material A and a material B in a weight ratio of 95:5, wherein the material A comprises the following components in parts by weight: 87-92 parts of ethyl-propylene rubber, 8-13 parts of polyolefin elastomer, 1.4-1.8 parts of silane, 0.1-0.15 part of initiator, 110-130 parts of halogen-free fire retardant and 5-10 parts of lubricant; and the material B comprises the following components in parts by weight: 100 parts of polyethylene resin, 5-10 parts of antioxidant and 1.0-1.5 parts of crosslinking catalyst. The silane crosslinking halogen-free antiflaming ethyl-propylene insulating material provided by the invention not only has good electric insulating property and chemical stability like those of the ethyl-propylene rubber but also has high breaking elongation, and can be used as the substitute of the ethyl-propylene rubber to be used for insulation and sheathing of soft electric wires and cables.
Description
Technical field
The present invention relates to a kind of silane crosslinked halogen-free flame-retardant second third insulating material and preparation method thereof.
Background technology
Rubber-insulated electric wires and cables has good electrical insulation properties and chemical stability, particularly compares with other type electric wire, has incomparable flexibility, and the occasion that is widely used in moving is as boats and ships, mining area, down-hole, rolling stock etc.Traditional rubber vulcanization process is more complicated, all needs to use special-purpose extrusion equipment to produce, and must after over cure the molecular structure of rubber be changed after extruding, and can use after making it to form thermosetting material.
But traditional rubber production technology, complex procedures needs special-purpose extruding and vulcanizing equipment, must consume lot of energy again during sulfuration, and the waste that produces when producing short cable or conversion specification is bigger.
Summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art, provide a kind of and can substitute traditional ethylene propylene rubber insulation material, and be used for the insulation of soft electric wire and silane crosslinked halogen-free flame-retardant second third insulating material of sheath and preparation method thereof.
A kind of silane crosslinked halogen-free flame-retardant second third insulating material provided by the invention is characterized in that, its raw material is made up of by weight 95: 5 A material and B material, wherein;
A material component title and each composition weight proportioning are:
87～92 parts in ethylene-propylene rubber(EPR);
8～13 parts of polyolefin elastomers;
1.4～1.8 parts in silane;
0.1～0.15 part of initiator;
110～130 parts of halogen-free flame retardantss;
5～10 parts of lubricants.
B material component title and each composition weight proportioning are:
100 parts of polyvinyl resins;
5～10 parts in oxidation inhibitor;
1.0～1.5 parts of crosslinking catalysts.
Preferably, described A material component title and each composition weight proportioning are:
88～91 parts in ethylene-propylene rubber(EPR);
9～12 parts of polyolefin elastomers;
1.5～1.7 parts in silane;
0.11～0.14 part of initiator;
112～128 parts of halogen-free flame retardantss;
6～9 parts of lubricants;
Described B material component title and each composition weight proportioning are:
100 parts of polyvinyl resins;
6～9 parts in oxidation inhibitor;
1.1～1.4 parts of crosslinking catalysts.
Wherein, described ethylene-propylene rubber(EPR) is terpolymer EP rubber, and described terpolymer EP rubber is selected from the terpolymer EP rubber EPDM (ENB) that produces with ethylidene norbornene, or the terpolymer EP rubber EPDM (DCPD) that produces with dicyclopentadiene.Wherein, the mooney viscosity scope of terpolymer EP rubber EPDM (ENB) is 40～50, and the mooney viscosity scope of terpolymer EP rubber EPDM (DCPD) is 45～55.
Wherein, described polyolefin elastomer is ethylene-butene copolymer (TAFMER) or ethylene-octene copolymer (POE); Ethylene-butene copolymer such as KF306, ethylene-octene copolymer such as DF840 etc. all are applicable to the present invention.
Wherein, described silane is vinyl silanes, and is preferred, is selected from vinyltriethoxysilane, vinyltrimethoxy silane, vinyl trichloro silane or vinyl three ('beta '-methoxy oxyethyl group) silane.
Wherein, described initiator is a peroxide initiator, comprises DCP, and chemical name is a dicumyl peroxide; BPO, its chemical name are dibenzoyl peroxide; Two two or five, chemical name is 2,5-dimethyl-2,5 di-t-butyl peroxy hexane; 1, two (tert-butyl peroxide) hexanaphthenes of 1-.
Wherein, described halogen-free flame retardants is import Al (OH)
3Or Mg (OH)
2
Wherein, described lubricant is selected from PE wax (its weight average molecular weight range is 2300-2500), stearate, EBS (ethylene bis stearamide) or silane auxiliary agent oil (silane coupling agent) A172 that high bridge is produced.
Wherein, polyvinyl resin is selected from LDPE2102, LDPE5320, LDPEDJ210.
Wherein, described oxidation inhibitor is selected from antioxidant 1010, and chemical name is: four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester; Oxidation inhibitor 168, chemical name is: three (2, the 4-di-tert-butyl-phenyl) phosphorous acid ester; Antioxidant 1076, chemical name is: the β-positive octadecanol ester of (3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid; Composite antioxidant B215; Composite antioxidant B225.
Wherein, described catalyzer is an organotin, and is preferred, is selected from dibutyl tin dilaurate, lauric acid toxilic acid dibutyl tin or two lauric acid.
The mechanism of silane crosslinked halogen-free flame-retardant second third insulating material is to utilize organo-peroxide as cross-linked evocating agent, it is carried out the silane grafting handle, form through hydrolysis, crosslinking reaction then.Its prescription consists of ethylene-propylene rubber(EPR), polyolefin elastomer, silane, initiator, halogen-free flame retardants, oxidation inhibitor and crosslinking catalyst.Catalyzer wherein is the organic tin catalyzer.
Silane crosslinked halogen-free flame-retardant second third insulating material provided by the invention, its basic chemical reaction mechanism is as follows:
A, superoxide decomposes become radical:
ROOR→2RO
B, cause polyolefinic dehydrogenation reaction:
The graft reaction of C, polyolefine and silane:
Silane graft polyolefin radical
The graft polyolefin free radical activity shifts, and termination reaction forms polyolefine grafting body.
D, hydrolysis reaction:
Hydrolysis takes place and obtains the polyolefine silanol groups under the effect of water and catalyzer in the polyolefine after the silane grafting.
Between E, the crosslinking reaction polyolefine silanol condensation reaction taking place, forms the 3 D stereo reticulated structure.
Wherein, the hydrolytic condensation catalyzer is the organic tin catalyzer.
The present invention also provides a kind of preparation method of above-mentioned silane crosslinked halogen-free flame-retardant second third insulating material, may further comprise the steps:
1) virgin rubber, polyolefin elastomer and the halogen-free flame retardants of ethylene-propylene rubber(EPR) is even in described ratio uniform mixing, after Banbury mixer carries out pre-granulation, again with silane, initiator and lubricant in described ratio uniform mixing, feeding goes in the twin screw extruder to extrude, granulation, finished product drying, makes the A material;
2) polyvinyl resin, crosslinking catalyst and oxidation inhibitor is evenly mixed in described ratio, add in the twin screw extruder then extrude, granulation, finished product drying, make the B material;
3) gained A material in step 1 and 2 and B material is even by weight 95: 5 mixed, make test piece through single screw extrusion machine, normal temperature was placed 3～5 days, can obtain silane crosslinked halogen-free flame-retardant second third insulating material of the present invention.
Silane crosslinked halogen-free flame-retardant second third insulating material provided by the present invention, not only have the same good electrical insulation properties with ethylene-propylene rubber(EPR) and chemical stability, but also has higher elongation at break, can be used as the substitute of ethylene-propylene rubber(EPR) material, be used for the insulation and the sheath of soft electric wire.In addition, material provided by the present invention only need use common PVC forcing machine to produce when producing to extrude; After this material cable is extruded, need not sulfuration, can finish crosslinkedly under field conditions (factors), so simplified production process in the past greatly, greatly improved production efficiency, shortened the production cycle, the reduction cost of investment reaches energy-saving and cost-reducing; Simultaneously can change the cable specification flexibly freely, reach the cable that to produce any length and almost not waste.
Description of drawings
Fig. 1 is preparation technology's schema of the present invention.
Embodiment
Embodiment 1
A material and B material were formed by weight 95: 5:
A material component title and each composition weight proportioning are:
Terpolymer EP rubber EPDM (ENB) 88kg;
Polyolefin elastomer (KF360) 12kg;
Vinyltriethoxysilane 1.5kg;
Organotin initiator dicumyl peroxide DCP 0.11kg;
Halogen-free flame retardants Mg (OH)
2112kg;
Lubricant PE wax 6kg.
B material component title and each composition weight proportioning are:
Polyvinyl resin LDPEDJ210 100kg;
Oxidation inhibitor B215 6kg;
Crosslinking catalyst lauric acid toxilic acid dibutyl tin 1.1kg.
Production technique: even according to A material and B material by weight 95: 5 mixed, extrude through single screw rod and to make test piece, normal temperature placement 3～5 days;
The production technique of A material is: the virgin rubber of terpolymer EP rubber EPDM (ENB) and polyolefin elastomer (KF360) and halogen-free flame retardants Mg (OH)
2In 88: 12: 112 ratio uniform mixing after 5 minutes in the prescription, carry out pre-granulation at Banbury mixer again, and then with vinyltriethoxysilane, initiator DCP and lubricant PE wax in the prescription in 212: 1.5: 0.11: 6 ratios are carried out uniform mixing, operations such as feeding goes in the twin screw extruder to extrude, granulation, finished product drying, extrusion temperature is 60～140 ℃, granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product;
B material production process is followed successively by: polyvinyl resin LDPEDJ210 and catalyzer lauric acid toxilic acid dibutyl tin and oxidation inhibitor B215 were by in filling a prescription 100: 1.16: ratio evenly mixes, and then adds operations such as twin screw is extruded, granulation, finished product drying.The B material passes through I district, II district, III district, IV district, V district, VI district, VII district, VIII district, IX district, flange, the head of twin screw extruder successively; Each distinguishes temperature: 120 ℃ in I district, 150 ℃ in II district, 160 ℃ in III district, 170 ℃ in IV district, 175 ℃ in V district, 180 ℃ in VI district, 185 ℃ in VII district, 190 ℃ in VIII district, 190 ℃ in IX district, 190 ℃ of flanges, 190 ℃ of heads.Granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product.
Embodiment 2
A material and B material were formed by weight 95: 5:
A material component title and each composition weight proportioning are:
Terpolymer EP rubber EPDM (DCPD) 91kg;
Polyolefin elastomer (DF840) 9kg;
Vinyltrimethoxy silane 1.7kg;
Organotin initiator dibenzoyl peroxide BPO 0.14kg;
Halogen-free flame retardants Al (OH)
3128kg;
Lubricant EBS 9kg.
B material component title and each composition weight proportioning are:
Polyvinyl resin LDPE5320 100kg;
Oxidation inhibitor 168 9kg;
Crosslinking catalyst two lauric acid 1.4kg.
Production technique: even according to A material and B material by weight 95: 5 mixed, extrude through single screw rod and to make test piece, normal temperature placement 3～5 days;
The production technique of A material is: the virgin rubber of terpolymer EP rubber EPDM (DCPD) and polyolefin elastomer (DF840) and halogen-free flame retardants Al (OH)
3In 91: 9: 128 ratio uniform mixing after 5 minutes in the prescription, carry out pre-granulation at Banbury mixer again, and then with vinyltrimethoxy silane, initiator B PO and lubricant EBS in the prescription in 228: 1.7: 0.14: 9 ratios are carried out uniform mixing, operations such as feeding goes in the twin screw extruder to extrude, granulation, finished product drying, extrusion temperature is 60～140 ℃, granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product;
B material production process is followed successively by: polyvinyl resin LDPE5320 and catalyzer two lauric acid and oxidation inhibitor 168 are evenly mixed in 100: 1.4: 9 ratios in the prescription, then add operations such as twin screw is extruded, granulation, finished product drying.Processing temperature in the expressing technique process is set with embodiment 1.Granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product.
Embodiment 3
A material and B material were formed by weight 95: 5:
A material component title and each composition weight proportioning are:
Terpolymer EP rubber EPDM (ENB) 90kg;
Polyolefin elastomer (KF360) 10kg;
Vinyl trichloro silane 1.6kg;
Two two or five 0.13kg of initiator;
Halogen-free flame retardants Mg (OH)
2120kg;
Magnesium stearate lubricant 7kg.
B material component title and each composition weight proportioning are:
Polyvinyl resin LDPE2102 100kg;
Antioxidant 1076 8kg;
Crosslinking catalyst dibutyl tin dilaurate 1.2kg.
Production technique: even according to A material and B material by weight 95: 5 mixed, extrude through single screw rod and to make test piece, normal temperature placement 3～5 days;
The production technique of A material is: the virgin rubber of terpolymer EP rubber EPDM (ENB) and polyolefin elastomer (KF360) and halogen-free flame retardants Mg (OH)
2In 90: 10: 120 ratio uniform mixing after 5 minutes in the prescription, carry out pre-granulation at Banbury mixer again, and then with vinyl trichloro silane, initiator two 25 and magnesium stearate lubricant by in filling a prescription 220: 1.6: 0.13: 7 ratios are carried out uniform mixing, operations such as feeding goes in the twin screw extruder to extrude, granulation, finished product drying, extrusion temperature is 60～140 ℃, granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product;
B material production process is followed successively by: polyvinyl resin LDPE2102 and catalyzer dibutyl tin dilaurate and antioxidant 1076 are evenly mixed in 100: 1.2: 8 ratios in the prescription, then add operations such as twin screw is extruded, granulation, finished product drying.Processing temperature in the expressing technique process is set with embodiment 1.Granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product.
Embodiment 4
A material and B material were formed by weight 95: 5:
A material component title and each composition weight proportioning are:
Terpolymer EP rubber EPDM (DCPD) 89kg;
Polyolefin elastomer (DF840) 11kg;
Vinyl three ('beta '-methoxy oxyethyl group) silane 1.55kg;
Initiator 1, two (tert-butyl peroxide) hexanaphthene 0.12kg of 1-;
Halogen-free flame retardants Al (OH)
3116kg;
Lubricant A172 8kg.
B material component title and each composition weight proportioning are:
Polyvinyl resin LDPE5320 100kg;
Oxidation inhibitor β-(3, the 5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid 7kg;
Crosslinking catalyst lauric acid toxilic acid dibutyl tin 1.3kg.
Production technique: even according to A material and B material by weight 95: 5 mixed, extrude through single screw rod and to make test piece, normal temperature placement 3～5 days;
The production technique of A material is: the virgin rubber of terpolymer EP rubber EPDM (DCPD) and polyolefin elastomer (DF840) and halogen-free flame retardants Al (OH)
3In 89: 11: 116 ratio uniform mixing after 5 minutes in the prescription, carry out pre-granulation at Banbury mixer again, and then with vinyl three ('beta '-methoxy oxyethyl group) silane, initiator 1, two (tert-butyl peroxide) hexanaphthenes of 1-and lubricant A172 were by in filling a prescription 216: 1.55: 0.12: 8 ratio is carried out uniform mixing, operations such as feeding goes in the twin screw extruder to extrude, granulation, finished product drying, extrusion temperature is 60～140 ℃, granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product;
B material production process is followed successively by: polyvinyl resin LDPE5320 and catalyzer lauric acid toxilic acid dibutyl tin and oxidation inhibitor β-(3, the 5-di-tert-butyl-hydroxy phenyl) the positive octadecanol ester of propionic acid is evenly mixed in 100: 1.3: 7 ratios in the prescription, then adds operations such as twin screw is extruded, granulation, finished product drying.Processing temperature in the expressing technique process is set with embodiment 1.Granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product.
Embodiment 5
A material and B material were formed by weight 95: 5:
A material component title and each composition weight proportioning are:
Terpolymer EP rubber EPDM (ENB) 89kg;
Polyolefin elastomer (DF840) 11kg;
Vinyl trichloro silane 1.6kg;
Initiator 2,5-dimethyl-2, two (tert-butyl peroxy base) hexin-3 0.13kg of 5-;
Halogen-free flame retardants Mg (OH)
2113kg;
Magnesium stearate lubricant 8.6kg.
B material component title and each composition weight proportioning are:
Polyvinyl resin LDPE2102 100kg;
Antioxidant 1010 6.5kg;
Crosslinking catalyst dibutyl tin dilaurate 1.25kg.
Production technique: even according to A material and B material by weight 95: 5 mixed, extrude through single screw rod and to make test piece, normal temperature placement 3～5 days;
The production technique of A material is: the virgin rubber of terpolymer EP rubber EPDM (ENB) and polyolefin elastomer DF840 and halogen-free flame retardants Mg (OH)
2In 89: 11: 113 ratio uniform mixing after 5 minutes in the prescription, carry out pre-granulation at Banbury mixer again, and then with vinyl trichloro silane, initiator two 25 and magnesium stearate lubricant by in filling a prescription 213: 1.6: 0.13: 8.6 ratios are carried out uniform mixing, operations such as feeding goes in the twin screw extruder to extrude, granulation, finished product drying, extrusion temperature is 60～140 ℃, granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product;
B material production process is followed successively by: polyvinyl resin LDPE2102 and catalyzer dibutyl tin dilaurate and antioxidant 1076 are evenly mixed in 100: 1.25: 6.5 ratios in the prescription, then add operations such as twin screw is extruded, granulation, finished product drying.Processing temperature in the expressing technique process is set with embodiment 1.Granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product.
Embodiment 6
A material and B material were formed by weight 95: 5:
A material component title and each composition weight proportioning are:
Terpolymer EP rubber EPDM (DCPD) 90kg;
Polyolefin elastomer KF360 10kg;
Vinyl trichloro silane 1.6kg;
Initiator 2,5-dimethyl-2, two (tert-butyl peroxy base) hexin-3 0.12kg of 5-;
Halogen-free flame retardants Mg (OH) 2 127kg;
Magnesium stearate lubricant 8kg.
B material component title and each composition weight proportioning are:
Polyvinyl resin LDPE2102 100kg;
Oxidation inhibitor B225 9kg;
Crosslinking catalyst dibutyl tin dilaurate 1.1kg.
Production technique: even according to A material and B material by weight 95: 5 mixed, extrude through single screw rod and to make test piece, normal temperature placement 3～5 days;
The production technique of A material is: the virgin rubber of terpolymer EP rubber EPDM (DCPD) and polyolefin elastomer KF360 and halogen-free flame retardants Mg (OH) 2 are in 90: 10: 127 ratio uniform mixing in filling a prescription after 5 minutes, carry out pre-granulation at Banbury mixer again, and then and vinyl trichloro silane, initiator two 25 and magnesium stearate lubricant were by in filling a prescription 227: 1.6: 0.12: 8 ratios are carried out uniform mixing, feeding goes in the twin screw extruder to extrude, granulation, operations such as finished product drying, extrusion temperature is 60～140 ℃, granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product;
B material production process is followed successively by: polyvinyl resin LDPE2102 and catalyzer dibutyl tin dilaurate and antioxidant 1076 are evenly mixed in 100: 1.1: 9 ratios in the prescription, then add operations such as twin screw is extruded, granulation, finished product drying.Processing temperature in the expressing technique process is set with embodiment 1.Granulation is that pelletizing forms through tie rod cold wind, and the finished product drying process is that 60 ℃ of dehumidifying vacuum-drying 1～2h get final product.
Embodiment 2 and embodiment 4 products obtained therefroms are squeezed to carry out poach behind the sheet crosslinked, detect performance then, and with common ethylene-propylene rubber(EPR) by sulfuration process the performance comparison after crosslinked, its performance is as shown in table 1:
Table 1
*Outward appearance: uniform particles, there is not obvious powdery substance.Evaluation: qualified.
Crosslinked to carrying out poach behind the crowded sheet of other embodiment products obtained therefroms, carry out identical Performance Detection, its result is substantially the same manner as Example 2.
By above-mentioned data as can be seen, silane crosslinked halogen-free flame-retardant second third insulating material provided by the present invention, not only have the same good electrical insulation properties with ethylene-propylene rubber(EPR) and chemical stability, but also has higher elongation at break, can be used as the substitute of ethylene-propylene rubber(EPR) material, be used for the insulation and the sheath of soft electric wire.The most important thing is that the present invention finishes the cross-linking process of ethylene-propylene rubber(EPR) by the silane grafting, more crosslinked than coming by vulcanizing equipment, can save a lot of operations and artificial, reaching under the prerequisite of identical performance, can enhance productivity greatly.
Claims (9)
1. silane crosslinked halogen-free flame-retardant second third insulating material is characterized in that, is made up of by weight 95:5 A material and B material;
A material component title and each composition weight proportioning are:
87～92 parts in ethylene-propylene rubber(EPR);
8～13 parts of polyolefin elastomers;
1.4～1.8 parts in silane;
0.1～0.15 part of initiator;
110～130 parts of halogen-free flame retardantss;
5～10 parts of lubricants;
B material component title and each composition weight proportioning are:
100 parts of polyvinyl resins;
5～10 parts in oxidation inhibitor;
1.0～1.5 parts of crosslinking catalysts;
Described ethylene-propylene rubber(EPR) is terpolymer EP rubber;
Described polyolefin elastomer is ethylene-butene copolymer or ethylene-octene copolymer;
Described polyvinyl resin is selected from LDPE2102, LDPE5320 or LDPEDJ210.
2. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 is characterized in that, described A material component title and each composition weight proportioning are:
88～91 parts in ethylene-propylene rubber(EPR);
9～12 parts of polyolefin elastomers;
1.5～1.7 parts in silane;
0.11～0.14 part of initiator;
112～128 parts of halogen-free flame retardantss;
6～9 parts of lubricants;
B material component title and each composition weight proportioning are:
100 parts of polyvinyl resins;
6～9 parts in oxidation inhibitor;
1.1～1.4 parts of crosslinking catalysts.
3. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 and 2 is characterized in that described silane is vinyl silanes.
4. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 and 2 is characterized in that described initiator is a peroxide initiator.
5. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 and 2 is characterized in that, described halogen-free flame retardants is Al (OH)
3Or Mg (OH)
2
6. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 and 2 is characterized in that, described lubricant is selected from PE wax, stearate, EBS or silane auxiliary agent oil.
7. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 and 2 is characterized in that described oxidation inhibitor is selected from antioxidant 1010, oxidation inhibitor 168, antioxidant 1076, composite antioxidant B215 or composite antioxidant B225.
8. silane crosslinked halogen-free flame-retardant second third insulating material according to claim 1 and 2 is characterized in that described catalyzer is the organic tin catalyzer.
9. as the preparation method of described silane crosslinked halogen-free flame-retardant second third insulating material of arbitrary claim among the claim 1-8, may further comprise the steps:
1) virgin rubber, polyolefin elastomer and the halogen-free flame retardants of ethylene-propylene rubber(EPR) is even in described ratio uniform mixing, after Banbury mixer carries out pre-granulation, again with silane, initiator and lubricant in described ratio uniform mixing, feeding goes in the twin screw extruder to extrude, granulation, finished product drying, makes the A material;
2) polyvinyl resin, crosslinking catalyst and oxidation inhibitor is evenly mixed in described ratio, add in the twin screw extruder then extrude, granulation, finished product drying, make the B material;
3) gained A material in step 1 and 2 and B material is even by weight the mixed of 95:5, make test piece through single screw extrusion machine, normal temperature was placed 3～5 days, obtained silane crosslinked halogen-free flame-retardant second third insulating material.
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| CN102731917B (en) * | 2012-07-16 | 2013-07-10 | 江苏德威新材料股份有限公司 | Silane self-crosslinking halogen-free low-smoke flame-retardant elastic material and preparation method thereof |
| FR3009127B1 (en) * | 2013-07-29 | 2016-01-01 | Nexans | CABLE COMPRISING A THERMOCHROMIC RETICULATED POLYMERIC LAYER |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633754A (en) * | 2009-05-22 | 2010-01-27 | 上海凯波特种电缆料厂有限公司 | Oil resistant type silane natural cross-linking low smoke halogen-free flame retardant polyolefin cable material and preparation method thereof |
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2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633754A (en) * | 2009-05-22 | 2010-01-27 | 上海凯波特种电缆料厂有限公司 | Oil resistant type silane natural cross-linking low smoke halogen-free flame retardant polyolefin cable material and preparation method thereof |
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Address after: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee after: Shanghai Kaibo cable special material Co., Ltd Address before: 201802 Shanghai City, Jiading District Nanxiang Town Yongle Village No. 271 Patentee before: SHANGHAI KAIBO SPECIAL CABLE FACTORY Co.,Ltd. |