CN101486815A - Thermoplastic low-smoke halogen-free polyolefin material and preparation thereof - Google Patents
Thermoplastic low-smoke halogen-free polyolefin material and preparation thereof Download PDFInfo
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- CN101486815A CN101486815A CNA200910024539XA CN200910024539A CN101486815A CN 101486815 A CN101486815 A CN 101486815A CN A200910024539X A CNA200910024539X A CN A200910024539XA CN 200910024539 A CN200910024539 A CN 200910024539A CN 101486815 A CN101486815 A CN 101486815A
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- polyolefine material
- fireproof composite
- composite polyolefine
- free fireproof
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Abstract
The invention relates to a thermoplastic low-smoke and zero halogen flame retardant polyolefine material and a preparation method thereof. According to mass percent, the basic formula consists of 10-25% of ethylene-Vinyl Acetate Copolymer; 5-15% of low-density polyethylene, 6-25% of ethylene elastomer, 59-77% of aluminium hydroxide, 1-3% of flame retardant, 0.2-1% of chemical inhibitor, 0.5-1.5% of lubricant, 0.1-4% of cross linker and 0.2-1% of surface active agent. The processing comprises the following steps of: pretreatment of raw materials, feeding, heating, shearing dispersion and packaging. In the dispersion process, shearing dispersion is carried out to the materials by adopting screw configuration in the filling section and the plasticizing section, and the materials need to be aggregated in the screw before entering the dispersion process. The invention has the advantages of low smoke, innocuity, good anti-dripping property, excellent dielectric property and anti-cracking property of the product, crustification combustion and good flame retardance, and is mainly applied to nuclear power plants, towropes, power cables and control cables.
Description
Technical field
The present invention relates to a kind of thermoplastic low-smoke halide-free fireproof composite polyolefine material and preparation method thereof.
Background technology
The used polymkeric substance of electric wire mostly is the polymkeric substance of PVC or halogen-containing based flame retardant greatly at present.Because halogen-containing base polymer material forms the toxic smog of black when burning, discharge the halogenous chemicals of deriving simultaneously, has brought unprecedented difficulty for the fire rescue operation, has also polluted environment simultaneously.Fire is serious in recent years, and electric wire is one of principal element that causes fire.So environmental friendliness, low cigarette, nontoxic, the anti-fire retardant material that drips the dielectric properties of a property, excellence are stepped up to develop in countries in the world.
Halogen-free low-smoke flame retardant material adopts inorganic combustion inhibitor mostly at present, because the inorganic combustion inhibitor flame retarding efficiency is low, therefore needs heavy addition, thereby causes the mechanical property variation, can not satisfy shortcomings such as processing characteristics, thermal distortion difference.
Summary of the invention
In order to overcome the deficiency on the used polymer performance of said wires cable, the invention provides a kind of mechanical property that both satisfied, satisfy Drawing abillity again, improved the thermoplastic low-smoke halide-free fireproof composite polyolefine material of the heat-drawn wire of material simultaneously, with and preparation method thereof.
The technical solution adopted in the present invention is: a kind of thermoplastic low-smoke halide-free fireproof composite polyolefine material, and basic recipe and mass percent consist of: ethylene-vinyl acetate copolymer: 10-25%; New LDPE (film grade): 5-15%; Ethylene elastomer: 6-25%; Aluminium hydroxide: 59-77%; Fire retardant: 1-3%; Oxidation inhibitor: 0.2-1%; Lubricant: 0.5-1.5%; Linking agent: 0.1-4%; Tensio-active agent: 0.2-1%.
Particularly:
Described new LDPE (film grade) is linear low density polyethylene (LLDPE).
Described fire retardant is a kind of or arbitrary combination in zinc borate, the antimonous oxide.
Described oxidation inhibitor is a kind of or arbitrary combination in four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester or the β-positive octadecanol ester of (4-hydroxy phenyl-3,5-di-t-butyl) propionic acid.
Described lubricant is a kind of or arbitrary combination among Zinic stearas, the EBS (N, N '-ethylenebisstearamide).
Described linking agent is a kind of or arbitrary combination in iso-cyanuric acid triallyl ester or the two dioxime.
Described tensio-active agent is a vinyl trimethoxy Ethoxysilane.
A kind of preparation method of thermoplastic low-smoke halide-free fireproof composite polyolefine material is characterized in that adopting following steps:
Raw materials pretreatment: mainly be to carry out pre-treatment at aluminium hydroxide with tensio-active agent, spray processing with tensio-active agent in high-speed mixer, high-speed mixing is dewatered to temperature 90-100 degree then;
Reinforced: add aluminium hydroxide, add coupling agent then, equitemperature is raised to more than 80 degree, adds ethylene-vinyl acetate copolymer, polyethylene, elastomerics, oxidation inhibitor, lubricant again, adds linking agent at last;
Heat and shear dispersion: feed zone 90-100 degree, fluxing zone 120-130 degree, metering zone 90-110 degree, die head temperature 140-150 degree; Disconnected and fluxing zone adopts screw combinations that material is sheared dispersion in charging, should make material conglomeration in screw rod before entering dispersion, so that disperse;
Packing: adopts aluminum-plastic packaged or internal packing is a polyethylene bag, vacuumize simultaneously, sack adopts the mode of heat-sealing, and the width that seals is not less than 10mm.
Because what this product adopted is inorganic filler, loading level must be very big, just can reach fire-retardant effect, so it is important to disperse to cause the pass, the general at present secondary dispersive principle that adopts is disperseed, also be embodied in simultaneously in the combination of screw rod, and also be very important.The selection of compatilizer and linking agent also is a key point, and selected compatilizer and linking agent must meet formula system, just can reach best effect.
The beneficial effect of advantage of the present invention is: product anti-cracking performance excellence, and the burning crust, good flame resistance is mainly used in Nuclear power plants, tow, power cable, umbilical cable.
Embodiment
Below in conjunction with embodiment the present invention is further described.
Example one,
Ethylene-vinyl acetate copolymer: 80
LLDPE：20
Aluminium hydroxide: 160
EBS：0.8
Zinic stearas: 0.4
Antioxidant 1010: 1
Linking agent: 0.2
Example two,
Ethylene-vinyl acetate copolymer: 60
LLDPE：20
Elastomerics: 20
Aluminium hydroxide: 160
EBS：0.8
Zinic stearas: 0.4
Antioxidant 1010: 1
Linking agent: 0.2
Example three,
Ethylene-vinyl acetate copolymer: 60
LLDPE：20
Elastomerics: 20
Aluminium hydroxide: 160
Tensio-active agent: 2
EBS：0.8
Zinic stearas: 0.4
Antioxidant 1010: 1
Linking agent: 0.2
The topmost index of this product is a high temperature pressure: the general test standard is GB8815, and the requirement here is GB2951.These two standard latter in the area of pressurized and load all than the former height, so require to have improved a lot.
By the last test result of three embodiment as can be seen, embodiment three is the claimed component prescription of the present invention, over-all properties the best of its final product.
Wherein: adding tensio-active agent mainly is the moment of torsion that reduces material, improves the processing characteristics of product.If add the elongation at break that elastic body active improves material.To increase the use range of material.
Thermoplastic low-smoke halide-free fireproof composite polyolefine material by the prescription stated by the present invention and preparation method make has the anti-cracking performance excellence, the burning crust, and good flame resistance is used on Nuclear power plants, tow, power cable, the umbilical cable.
Claims (8)
1. thermoplastic low-smoke halide-free fireproof composite polyolefine material is characterized in that basic recipe and mass percent consist of:
Ethylene-vinyl acetate copolymer: 10-25%;
New LDPE (film grade): 5-15%;
Ethylene elastomer: 6-25%;
Aluminium hydroxide: 59-77%;
Fire retardant: 1-3%;
Oxidation inhibitor: 0.2-1%;
Lubricant: 0.5-1.5%;
Linking agent: 0.1-4%;
Tensio-active agent: 0.2-1%.
2. thermoplastic low-smoke halide-free fireproof composite polyolefine material according to claim 1 is characterized in that: described new LDPE (film grade) is a linear low density polyethylene.
3. thermoplastic low-smoke halide-free fireproof composite polyolefine material according to claim 1 is characterized in that: described fire retardant is a kind of or arbitrary combination in zinc borate, the antimonous oxide.
4. thermoplastic low-smoke halide-free fireproof composite polyolefine material according to claim 1, it is characterized in that: described oxidation inhibitor is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) a kind of or arbitrary combination in ester or β-positive octadecanol ester of (4-hydroxy phenyl-3,5-di-t-butyl) propionic acid.
5. thermoplastic low-smoke halide-free fireproof composite polyolefine material according to claim 1 is characterized in that: described lubricant is a kind of or arbitrary combination among Zinic stearas, the EBS (N, N '-ethylenebisstearamide).
6. thermoplastic low-smoke halide-free fireproof composite polyolefine material according to claim 1 is characterized in that: described linking agent is a kind of or arbitrary combination in iso-cyanuric acid triallyl ester or the two dioxime.
7. thermoplastic low-smoke halide-free fireproof composite polyolefine material according to claim 1 is characterized in that: described tensio-active agent is a vinyl trimethoxy Ethoxysilane.
8. the preparation method of a thermoplastic low-smoke halide-free fireproof composite polyolefine material is characterized in that adopting following steps:
Raw materials pretreatment: mainly be to carry out pre-treatment at aluminium hydroxide with tensio-active agent, spray processing with tensio-active agent in high-speed mixer, high-speed mixing is dewatered to temperature 90-100 degree then;
Reinforced: add aluminium hydroxide, add coupling agent then, equitemperature is raised to more than 80 degree, adds ethylene-vinyl acetate copolymer, polyethylene, elastomerics, oxidation inhibitor, lubricant again, adds linking agent at last;
Heat and shear dispersion: feed zone 90-100 degree, fluxing zone 120-130 degree, metering zone 90-110 degree, die head temperature 140-150 degree; Disconnected and fluxing zone adopts screw combinations that material is sheared dispersion in charging, should make material conglomeration in screw rod before entering dispersion, so that disperse;
Packing: adopts aluminum-plastic packaged or internal packing is a polyethylene bag, vacuumize simultaneously, sack adopts the mode of heat-sealing, and the width that seals is not less than 10mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910024539XA CN101486815A (en) | 2009-02-20 | 2009-02-20 | Thermoplastic low-smoke halogen-free polyolefin material and preparation thereof |
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|---|---|---|---|
| CNA200910024539XA CN101486815A (en) | 2009-02-20 | 2009-02-20 | Thermoplastic low-smoke halogen-free polyolefin material and preparation thereof |
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| CN101486815A true CN101486815A (en) | 2009-07-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604199A (en) * | 2012-03-28 | 2012-07-25 | 天津市普立泰高分子科技有限公司 | Anti-cracking low-smoke halogen-free flame retardant polyolefin protecting bush material and preparation method thereof |
| CN102911439A (en) * | 2012-09-18 | 2013-02-06 | 铜陵市铜都特种线缆厂 | Fire-resistant control cable material for ships and method for preparing same |
| CN104629158A (en) * | 2015-01-29 | 2015-05-20 | 安徽万泰电缆有限公司 | Modified mining cable sheathing material |
| CN105175938A (en) * | 2015-09-09 | 2015-12-23 | 南京中超新材料股份有限公司 | Environment friendly high flame-retardant polyvinyl chloride insulation material for high frequency communication cable and preparation method of environment friendly high flame-retardant polyvinyl chloride insulation material |
| CN105524340A (en) * | 2015-12-15 | 2016-04-27 | 中冠电缆有限公司 | High-filling halogen-free low-smoke flame-retardant cable material for nuclear power plant cable |
-
2009
- 2009-02-20 CN CNA200910024539XA patent/CN101486815A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604199A (en) * | 2012-03-28 | 2012-07-25 | 天津市普立泰高分子科技有限公司 | Anti-cracking low-smoke halogen-free flame retardant polyolefin protecting bush material and preparation method thereof |
| CN102911439A (en) * | 2012-09-18 | 2013-02-06 | 铜陵市铜都特种线缆厂 | Fire-resistant control cable material for ships and method for preparing same |
| CN104629158A (en) * | 2015-01-29 | 2015-05-20 | 安徽万泰电缆有限公司 | Modified mining cable sheathing material |
| CN105175938A (en) * | 2015-09-09 | 2015-12-23 | 南京中超新材料股份有限公司 | Environment friendly high flame-retardant polyvinyl chloride insulation material for high frequency communication cable and preparation method of environment friendly high flame-retardant polyvinyl chloride insulation material |
| CN105175938B (en) * | 2015-09-09 | 2017-06-20 | 南京中超新材料股份有限公司 | High frequency communications cable environmentally friendly high flame retardant polyvinyl chloride Insulation Material and preparation method thereof |
| CN105524340A (en) * | 2015-12-15 | 2016-04-27 | 中冠电缆有限公司 | High-filling halogen-free low-smoke flame-retardant cable material for nuclear power plant cable |
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Open date: 20090722 |