CN101050290B - Dynamic sulfurated retardant composite material of polypropylene without halogen, and preparation method - Google Patents

Dynamic sulfurated retardant composite material of polypropylene without halogen, and preparation method Download PDF

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Publication number
CN101050290B
CN101050290B CN2007100111536A CN200710011153A CN101050290B CN 101050290 B CN101050290 B CN 101050290B CN 2007100111536 A CN2007100111536 A CN 2007100111536A CN 200710011153 A CN200710011153 A CN 200710011153A CN 101050290 B CN101050290 B CN 101050290B
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China
Prior art keywords
halogen
parts
polypropylene
dynamic
sulfurated
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CN2007100111536A
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Chinese (zh)
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CN101050290A (en
Inventor
梁兵
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沈阳化工学院
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Publication of CN101050290B publication Critical patent/CN101050290B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders

Abstract

This invention relates to a method for preparing dynamic vulcanized polypropylene composite as halogen-free flame retardant. The dynamic vulcanized polypropylene composite is composed of: polypropylene 40-60 parts, ethylene-propylene terpolymerisate rubber 20-30 parts, halogen-free flame retardant system 50-100 parts, compatibilizer 10-30 parts, crosslinker 0.2-8 parts, and additives 1-10 parts. The method comprises: mixing the above components in a high-speed mixer, performing dynamic vulcanization by melt-blending in a twin screw extruder at 160-220 deg.C, extruding and granulating. The obtained dynamic vulcanizated polypropylene composite has good flame retardancy and mechanical properties, and can be used in the halogen-free flame-retarding environment.

Description

A kind of dynamic sulfurated retardant composite material of polypropylene without halogen and preparation method thereof
Technical field
The present invention relates to a kind of matrix material and preparation method thereof, particularly relate to a kind of dynamic sulfurated retardant composite material of polypropylene without halogen and preparation method thereof.
Background technology
Polypropylene (PP) is a kind of resins for universal use, light weight, nontoxic, have advantages such as excellent electric insulation performance and resistance to chemical corrosion, forming process be convenient, cheap, be widely used in industries such as electrical equipment, chemical industry, machinery, weaving, building, furniture, food product pack.But polypropylene belongs to inflammable material, and its oxygen index (L0I) has only 17.4~18.5, and when burning produce a large amount of molten drops, propagating flame very easily, this is restricted with regard to making PP application in a lot of fields.Material is the pillar of modern science and social development relation, and macromolecular material has the incomparable performance of many other materials, has become indispensable material in sophisticated technology, national defense construction and national economy every field.Yet most of macromolecular compounds belong to inflammable, combustible matl, in case catch fire, combustionvelocity is fast, are difficult for extinguishing, and some also can produce thick smoke and toxic gas, contaminate environment, and the life sense that jeopardizes the people is complete, causes any property loss.The fire that takes place in the world in recent decades, suitable most is relevant with the burning of macromolecular material.Therefore, the flame retardant properties that how to improve material has become the topic that the whole world is extremely paid close attention to.Along with synthetic materials is being brought into play enormous function day by day in the development of the national economy, stimulate and promoted the fast development of fire retardant technology.Fire retardant is one of important auxiliary agent of synthesized polymer material processing, and its function is to make synthetic materials have flame retardancy, self-extinguishing and smoke elimination.Scientific progress and environmental consciousness improve, people not only develop the better fire retardant of performance, environmental issue in fire retardant self and the use is proposed more strict requirement, fire retardant non-halogen, low poisoned, compoundization, but fuming has become 21 century fire retardant overall development trend.Inorganic combustion inhibitor except flame retardant effect is arranged, also have to suppress to be fuming and effect that hydrogenchloride generates in synthetic materials, and gives material non-toxic, non-corrosiveness and advantage such as cheap.
Summary of the invention
The object of the present invention is to provide a kind of dynamic sulfurated retardant composite material of polypropylene without halogen and preparation method thereof, with polypropylene, terpolymer EP rubber, etc. after auxiliary agent mixes in mixing machine, carry out the dynamic vulcanization prepared in reaction and go out this matrix material.Make material be ductile rupture, make it flame retardant properties and mechanical mechanics property is improved.
The objective of the invention is to be achieved through the following technical solutions:
A kind of dynamic sulfurated retardant composite material of polypropylene without halogen, the component of this dynamic sulfurated retardant composite material of polypropylene without halogen and parts by weight are: 40~60 parts of polypropylene, 20~30 parts of terpolymer EP rubbers, 50~100 parts of halogen-free flame-retardant systems, 10~30 parts of compatilizers, 0.2~8 part of linking agent, 1~10 part of auxiliary agent.
Aforesaid a kind of dynamic sulfurated retardant composite material of polypropylene without halogen, described halogen-free flame-retardant system are the Compositional type halogen-free flame retardants; Linking agent can be sulphur, dicumyl peroxide, resol; Auxiliary agent comprises oxidation inhibitor, lubricant and vulcanization accelerator; Compatilizer can be polypropylene grafted maleic anhydride, ethylene-octene copolymer grafted maleic anhydride.
Aforesaid a kind of dynamic sulfurated retardant composite material of polypropylene without halogen, described polypropylene can be homopolymerization or ethene and copolymerization of propylene.
A kind of preparation method of dynamic sulfurated retardant composite material of polypropylene without halogen, with said components thorough mixing in high-speed mixer,, carry out the dynamic vulcanization reaction through the twin screw extruder melt blending, twin screw extruder and die temperature are controlled at 160~220 ℃, extruding pelletization.Can obtain dynamic sulfurated retardant composite material of polypropylene without halogen.
Advantage of the present invention and effect are:
1. the shock strength of dynamic sulfurated retardant composite material of polypropylene without halogen of the present invention increases gradually along with the increase of amount of filling, can overcome its fragility for the bigger material system of inorganic combustion inhibitor addition and improve its toughness.This matrix material has good flame retardancy and mechanical mechanics property.
2. the present invention increases the cohesive force between component because macromole compatilizer compatibilization can improve the dispersiveness of filler in polymkeric substance, makes the material fracture be ductile rupture, causes the mechanical property of matrix material to improve.
Embodiment
Embodiment
The component of this dynamic sulfurated retardant composite material of polypropylene without halogen and weight fraction are: 60 parts of polypropylene, 30 parts of terpolymer EP rubbers, 90 parts of halogen-free flame-retardant systems, 30 parts of compatilizers, 4 parts of linking agents, 10 parts of auxiliary agents.
With said components thorough mixing in high-speed mixer, through the twin screw extruder melt blending, carry out the dynamic vulcanization reaction, twin screw extruder and die temperature are controlled at 160~220 ℃, extruding pelletization.Can obtain dynamic sulfurated retardant composite material of polypropylene without halogen of the present invention.
The performance of material of the present invention
Tensile strength (MPa): 13.81
Elongation at break (%): 337.5
Shock strength (KJ/m2): 50
Vertical combustion time/s :≤10
Flame retardant rating: V-0
Tensile strength: test by GB/T1040-1992; Notched Izod impact strength: with reference to the GB1048-79 standard; The vertical combustion grade is measured GB/T2408-1996.
Elastomerics (comprising rubber) can be by suitable crosslinked elasticity and its modulus of raising of obtaining.Elastomerics in the general elastic body toughening plastics system is also uncrosslinked, because its intensity, mechanical propertys such as modulus all are lower than plastics, though with the toughness that can improve plastics after the plastics simple blend, but tend to reduce performances such as the tensile strength of plastics and modulus, if by suitable crosslinked elasticity and the modulus that improves elastomerics phase in the toughened system, cloth last layer reticulated elastomeric body equably in plastic substrate, should help the raising of blend toughness and modulus, the simultaneously crosslinked intensity of elastomerics phase and the modulus of making increases, dwindle the difference on elastomerics and the plastics two-phase performance, helped the combination of two-phase interface.Adopt dynamic vulcanization technology to carry out plastics and elastomeric blend, elastomerics in the co-mixing system issues biochemical crosslinked in the effect of linking agent, carry out in the blend process owing to crosslinked, crosslinked elastomerics takes place can not form whole network structure as static state is crosslinked, and can be destroyed because of the blend shearing action, make the darker elastomerics of crosslinking degree be broken into very little particle, but the inside of these small-particles is still cross-linked network structure, under the effect of shearing force, finally being scattered in equably in the resin external phase, thereby strengthened its toughening effect than homogeneous granules.In addition, in the dynamic vulcanization process, also have a spot of elastomerics to be grafted on the macromolecular chain of resin, thereby increased the bond strength of two-phase interface.Compare with the simple blend system, dynamic vulcanized comixture mainly contains following characteristics: the one, and the lower elastomerics flexible chain of modulus is after chemically crosslinked, and elasticity, modulus all increase, and strengthened the toughening effect to plastics, and strength degradation are less; The 2nd, crosslinked elastomerics easily forms the particle of refinement under the blend shearing action, and can be evenly distributed in the plastic substrate, thus make material everywhere performance be tending towards homogeneous more.

Claims (1)

1. the preparation method of a dynamic sulfurated retardant composite material of polypropylene without halogen, it is characterized in that, the component of this dynamic sulfurated retardant composite material of polypropylene without halogen and parts by weight are: 40~60 parts of polypropylene homopolymerization or ethene and copolymerization of propylene, 20~30 parts of terpolymer EP rubbers, 50~100 parts of halogen-free flame-retardant system---Compositional type halogen-free flame retardantss, compatilizer is 10~30 parts of polypropylene grafted maleic anhydride or ethylene-octene copolymer grafted maleic anhydrides, linking agent is 0.2~8 part in sulphur or a resol, and auxiliary agent comprises oxidation inhibitor, 1~10 part of lubricant and vulcanization accelerator;
With said components thorough mixing in high-speed mixer, through the twin screw extruder melt blending, carry out the dynamic vulcanization reaction, twin screw extruder and die temperature are controlled at 160~220 ℃, extruding pelletization can obtain dynamic sulfurated retardant composite material of polypropylene without halogen.
CN2007100111536A 2007-04-29 2007-04-29 Dynamic sulfurated retardant composite material of polypropylene without halogen, and preparation method CN101050290B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007100111536A CN101050290B (en) 2007-04-29 2007-04-29 Dynamic sulfurated retardant composite material of polypropylene without halogen, and preparation method

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Application Number Priority Date Filing Date Title
CN2007100111536A CN101050290B (en) 2007-04-29 2007-04-29 Dynamic sulfurated retardant composite material of polypropylene without halogen, and preparation method

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CN101050290A CN101050290A (en) 2007-10-10
CN101050290B true CN101050290B (en) 2010-11-10

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101864116B (en) * 2010-07-09 2013-10-23 深圳市科聚新材料有限公司 High-performance EPDM (Ethylene-Propylene-Diene Monomer)/PP(Polypropylene)/NBR(Nitrile -Butadiene Rubber) ternary
CN104059321A (en) * 2013-03-19 2014-09-24 中纺投资发展股份有限公司 Weather-proof environment-friendly flame-retardant polymer material for flexible cable and preparation method thereof
CN103395188A (en) * 2013-08-12 2013-11-20 天华化工机械及自动化研究设计院有限公司 Processing device of halogen-free flame retardant polyethylene core material for fireproofing aluminum-plastic plate
CN104212063A (en) * 2014-09-22 2014-12-17 无为县华祥电缆材料有限公司 High-flame-retarding modified polypropylene cable sheath material
CN104760151B (en) * 2015-04-22 2016-08-24 盐城申源塑胶有限公司 A kind of elevator cable protective cover material
CN104816399B (en) * 2015-04-22 2016-07-06 江苏申源新材料有限公司 A kind of electric wire silane crosslinked polyethylene plastic
CN105037964B (en) * 2015-08-28 2017-06-09 广州敬信高聚物科技有限公司 A kind of thermoplastic elastomer (TPE) and preparation method thereof
CN106928538A (en) * 2015-12-29 2017-07-07 天津市普立泰高分子科技有限公司 Thermoplasticity oil resistant polyolefin elastomer protective cover material and preparation method thereof
CN106633420A (en) * 2016-09-19 2017-05-10 广东省石油化工研究院 Halogen-free flame-retardation thermoplastic dynamic sulfurated ethylene-propylene-diene monomer rubber/polypropylene composition and preparation method thereof
CN108623921A (en) * 2017-03-15 2018-10-09 中国石油化工股份有限公司 A kind of EPDM/PP thermoplastic elastic materials and its application
CN106977813A (en) * 2017-04-20 2017-07-25 贵州省材料产业技术研究院 A kind of dynamic vulcanization has fire-retardant TPV composites of halogen and preparation method thereof
CN108841073B (en) * 2018-06-30 2020-04-21 武汉理工大学 Flame-retardant dynamically vulcanized PP/POE elastomer and preparation method thereof

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