CN103601968A - Halogen-free flame-retardant polypropylene composite material used for making high-melt-strength sheets, and preparation method thereof - Google Patents
Halogen-free flame-retardant polypropylene composite material used for making high-melt-strength sheets, and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means 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
- B29C48/40—Means 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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Abstract
The invention discloses a halogen-free flame-retardant polypropylene composite material used for making high-melt-strength sheets. The composite material comprises, by mass, 50-70 parts of a polypropylene resin, 10-30 parts of a polyethylene resin, 10-25 parts of a compounded flame retardant, 0.1-0.2 parts of a primary cross-linking agent, 0.1-0.6 parts of an auxiliary cross-linking agent, 0.2-0.6 parts of an antioxidant and 0.2-0.5 parts of a lubricant. In the invention, the linear homopolymerized polypropylene resin having a melt index of 1-10g/10min is used as a base material, and is mixed with the linear low-density polyethylene resin having a melt index of 1-4g/10min, and the phosphorus-containing nitrogen system compounded flame retardant is added, so the high-melt-strength sheets having a thickness of 0.3-0.6mm can reach the UL-94V-0 flame retardation level, and the composite material has an excellent processability and causes no melting sag or melt fracture when the composite material is used to make the sheets.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to a kind of halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material, the invention still further relates to the preparation method of this halogen-free flame retardant polypropylene composite material.
Background technology
Because polypropylene has excellent processing characteristics and good use properties, make crystalline p p sheet application in the industry more and more extensive, become one of sheet material of consumption maximum, its plastic packet product is all widely used in fields such as medicine, light industry, toy, food and tourisms.
Prior art generally adopts ziegler-Natta catalyzer and metallocene catalyst to carry out propylene polymerization, inherent characteristics due to propylene coordination, the linear structure of polypropylene of this reaction gained, cause that in the process of polypropylene thermal formed sheet technique, to tend to make material to occur height-oriented, as: extrude lead and can produce unnecessary fold, all can there is difference clearly as tensile strength, shock strength, tear strength and anti-folding in the mechanical property of vertical and horizontal, bring a very scabrous difficult problem to the secondary processing in later stage.
Secondly, the softening point of polypropylene and fusing point are very approaching, surpass after fusing point, its solution intensity declines rapidly, when extensional flow, melt can not show strain hardening phenomenon, thereby cause, occurs molten hanging down and local attenuation when thermoforming, increase the difficulty of processing of crystalline p p sheet, and had a strong impact on the quality of crystalline p p sheet.
In addition, polypropylene belongs to red label goods, and burning thermal discharge is large, and with the molten drop with spark, very easily propagating flame causes fire, and its sheet material must have good flame retardant properties in the application of electrical apparatus industry.On domestic and international market, the main flame-retardant system adopting is bromine antimony flame-retardant system at present, but bromine antimony flame-retardant system can produce a large amount of toxic gases when burning, has a strong impact on environmental quality, and can cause very large harm to people's health.European Union in 2003 take the lead in announcing the ROSH instruction of restriction halogen, and corresponding environmental law rules are also successively put into effect in countries in the world, and fire-retardant polypropylene sheet, sheet material must be replaced used bromine class, could continue to use in electric industry as insulating material.Comparatively ripe polypropylene halogen-free flame-retardant system has oxyhydroxide, phosphorus system and nitrogen system in the market, but oxyhydroxide and nitrogenated flame retardant need larger loading level just can reach the fire-retardant rank of the required UL94V0 of sheet material, be unfavorable for processing, its cost is high, and the performance of product is had to impact largely; Phosphorus flame retardant easily absorbs water and separates out, and is unfavorable for insulation.
Therefore, develop a kind of halogen-free polypropylene flame redardant sheet material with good thermoforming processing characteristics and use properties necessary.
Summary of the invention
The object of the invention is to propose a kind of halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material, this kind of matrix material is used for the preparation of high fondant-strength sheet material, when giving sheet material excellent properties, also helps the machine-shaping of sheet material.
In order to solve prior art problem, the present invention is achieved by the following technical solutions.
For the preparation of a halogen-free flame retardant polypropylene composite material for high fondant-strength sheet material, by the raw material of following mass fraction, formed: 0.2 ~ 0.5 part of 50 ~ 70 parts of acrylic resins, 10 ~ 30 parts of polyvinyl resins, 10 ~ 25 parts of compound flame retardants, 0.1 ~ 0.2 part of main linking agent, 0.1 ~ 0.6 part of additional crosslinker, 0.2 ~ 0.6 part, oxidation inhibitor and lubricant; Wherein,
Described acrylic resin is the linear homo-polypropylene resin of melting index between 1 ~ 10g/10min;
Described polyvinyl resin is the linear low density polyethylene resin of melting index between 1 ~ 4g/10min;
Described compound flame retardant is by phosphonium flame retardant, containing nitrogen combustion inhibitor and composite the obtaining of phosphorus phosphorus-nitrogen coordinated fire-retardant agent.
Described main linking agent is dicumyl peroxide, 2,5-dimethyl-2,5 bis(t-butylperoxy) hexanes, 2,5-dimethyl-2,5 bis(t-butylperoxy) acetylene, peroxidation two (4-chlorobenzoyl) and 1,1-di-t-butyl peroxy-3, at least one in 3,5-trimethyl-cyclohexane.
Described additional crosslinker is trimethylolpropane tris acrylic acid ester, trimethylolpropane trimethacrylate, N, N '-phenyl-bismaleimide, 1, at least one in 2-polyhutadiene, diene third class phthalic acid ester and triolefin third class base cyanate.
Described oxidation inhibitor is any one or several combination in oxidation inhibitor B215, antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098 and irgasfos 168.
Described lubricant is polyethylene wax, calcium stearate, Zinic stearas and N, any one or several combination in N'-ethylene bis stearamide.
Another object of the present invention is to propose a kind of preparation method of the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material, and the method comprises the following steps:
1) take the raw material of formula ratio, first acrylic resin, polyvinyl resin, main linking agent and additional crosslinker are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
The described halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material is applied to the sheet production that thickness is 0.3 ~ 0.6mm.
The sheet material that the present invention can realize 0.3 ~ 0.6mm thickness reaches UL-94 V-0 flame retardant rating, asepsis environment-protecting, and its production technique is simple.The melt strength of matrix material of the present invention is high, adopt this matrix material and produce by methods such as rolling process, press polish method, casting method the sheet material obtaining and there is very high toughness, anti-two-way tear strength is high, and on two different directions of transverse and longitudinal, mechanical property does not have difference clearly; The processing characteristics of sheet material is excellent, there will not be and melts the phenomenon of hanging down with melt fracture, and transverse and longitudinal both direction also there will not be the phenomenon that shrinking percentage deviation is very large simultaneously, has further reduced the difficulty of processing of sheet material.In addition, the sheet material that adopts matrix material of the present invention to prepare has good water tolerance, anti-separating out and high pressure resistant breakdown performance, has improved fire-retardant polypropylene sheet numerous defect in processing and application process, has expanded its range of application.
Embodiment
The present invention has disclosed a kind of halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material, the raw material of following mass fraction, consists of: 0.2 ~ 0.5 part of 50 ~ 70 parts of acrylic resins, 10 ~ 30 parts of polyvinyl resins, 10 ~ 25 parts of compound flame retardants, 0.1 ~ 0.2 part of main linking agent, 0.1 ~ 0.6 part of additional crosslinker, 0.2 ~ 0.6 part, oxidation inhibitor and lubricant; Wherein,
In the present invention, select the linear homo-polypropylene resin of melting index between 1 ~ 10g/10min as base material, and and the linear low density polyethylene resin of a certain proportion of melting index between 1 ~ 4g/10min carry out mixing, obtain having the matrix material of high fondant-strength, while being used for the manufacture of sheet material, there is excellent processing characteristics, there will not be molten hanging down and melt fracture phenomenon, the mechanical property of two different directions of resulting sheet transverse and longitudinal does not have difference clearly, and shrinking percentage deviation is less.Acrylic resin specifically can be selected from the trade mark be in T30S, 2832E1, HP550J, F280T and S1005 any.Polyvinyl resin specifically can be selected from any in N150, LL-04SUV, DFDA-7042.As one embodiment of the present invention, the preferred T30S of acrylic resin, the preferred N150 of polyvinyl resin.
In order to improve the flame retardant properties of sheet material, in described matrix material, be added with compound flame retardant, compound flame retardant is by phosphonium flame retardant, containing nitrogen combustion inhibitor and composite the obtaining of phosphorus phosphorus-nitrogen coordinated fire-retardant agent, and to phosphonium flame retardant, containing the proportioning of nitrogen combustion inhibitor and the agent of phosphorus phosphorus-nitrogen coordinated fire-retardant without particular determination, in the present invention, adding a small amount of compound flame retardant can realize the sheet material of 0.3 ~ 0.6mm thickness and reach UL-94 V-0 flame retardant rating, production cost is low, and asepsis environment-protecting, because the addition of compound flame retardant is less, further reduced the impact of sheet material use properties simultaneously.
The present invention selects dicumyl peroxide, 2, 5-dimethyl-2, 5 bis(t-butylperoxy) hexanes, 2, 5-dimethyl-2, 5 bis(t-butylperoxy) acetylene, peroxidation two (4-chlorobenzoyl) and 1, 1-di-t-butyl peroxy-3, 3, at least one in 5-trimethyl-cyclohexane is main linking agent, select trimethylolpropane tris acrylic acid ester, trimethylolpropane trimethacrylate, N, a N '-phenyl-bismaleimide, 1, 2-polyhutadiene, at least one in diene third class phthalic acid ester and triolefin third class base cyanate is additional crosslinker, two kinds of linking agents are used in conjunction with, can effectively improve processing characteristics.One embodiment of the present invention, preferably dicumyl peroxide is as main linking agent, and additional crosslinker is without particular determination, and wherein, the parts by weight of dicumyl peroxide are 0.1 part.
In addition, in order to increase the life-span of product, in matrix material of the present invention, be added with oxidation inhibitor, oxidation inhibitor is without particular determination, the conventional oxidation inhibitor in this area all can, the preferably any one or several combination in oxidation inhibitor B215, antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098 and irgasfos 168.As one embodiment of the present invention, preferably the combination of antioxidant 1010 and irgasfos 168 is as the oxidation inhibitor of matrix material of the present invention, and the mass fraction of antioxidant 1010 is 0.2 part, and the mass fraction of irgasfos 168 is 0.4 part.
The present invention to lubricant without particular determination, this area conventional lubricants all can, preferably polyethylene wax, calcium stearate, Zinic stearas and N, any one or several combination in N'-ethylene bis stearamide.As one embodiment of the present invention, preferred N, N'-ethylene bis stearamide is as lubricant, and N, and the mass fraction of N'-ethylene bis stearamide is 0.5 part.
The present invention has also disclosed a kind of preparation method of the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material, and the method comprises the following steps:
1) take the raw material of formula ratio, first acrylic resin, polyvinyl resin, main linking agent and additional crosslinker are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
The described halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material is applied to the sheet production that thickness is 0.3 ~ 0.6mm.
By specific embodiment example, the present invention is done to further detailed description below.It should be noted that, all kinds of raw materials in embodiment, all can be replaced by the above-mentioned generic similar material of other performances, and the performance of gained matrix material is more or less the same.
Embodiment 1
For the preparation of a preparation method for the halogen-free flame retardant polypropylene composite material of high fondant-strength sheet material, the method comprises the following steps:
1) take the acrylic resin T30S of 50 parts, the polyethylene N150 of 10 parts, the compound flame retardant of 10 parts, the oxidation diisopropylbenzene(DIPB) of 0.1 part, the trimethylolpropane trimethacrylate of 0.1 part, the antioxidant 1010 of 0.2 part, the irgasfos 168 of 0.4 part and the N of 0.5 part, N'-ethylene bis stearamide;
First acrylic resin T30S, polyethylene N150, oxidation diisopropylbenzene(DIPB) and trimethylolpropane trimethacrylate are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
Embodiment 2
For the preparation of a preparation method for the halogen-free flame retardant polypropylene composite material of high fondant-strength sheet material, the method comprises the following steps:
1) take 53 parts acrylic resin T30S, 20 parts polyethylene N150,25 parts compound flame retardant, 0.1 part dicumyl peroxide, 0.15 part 1,2-polyhutadiene, the antioxidant 1010 of 0.2 part, the irgasfos 168 of 0.4 part and the N of 0.5 part, N'-ethylene bis stearamide;
First acrylic resin T30S, polyethylene N150, dicumyl peroxide and 1,2-polyhutadiene are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
Embodiment 3
For the preparation of a preparation method for the halogen-free flame retardant polypropylene composite material of high fondant-strength sheet material, the method comprises the following steps:
1) take the acrylic resin T30S of 55 parts, the polyethylene N150 of 15 parts, the compound flame retardant of 20 parts, the dicumyl peroxide of 0.15 part, the triolefin third class base cyanate of 0.25 part, the antioxidant 1010 of 0.2 part, the irgasfos 168 of 0.4 part and the N of 0.5 part, N'-ethylene bis stearamide;
First acrylic resin T30S, polyethylene N150, dicumyl peroxide and triolefin third class base cyanate are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
Embodiment 4
For the preparation of a preparation method for the halogen-free flame retardant polypropylene composite material of high fondant-strength sheet material, the method comprises the following steps:
1) take the acrylic resin T30S of 58 parts, the polyethylene N150 of 25 parts, the compound flame retardant of 15 parts, the dicumyl peroxide of 0.2 part, the trimethylolpropane tris acrylic acid ester of 0.25 part, the antioxidant 1010 of 0.2 part, the irgasfos 168 of 0.4 part and the N of 0.5 part, N'-ethylene bis stearamide;
First acrylic resin T30S, polyethylene N150, dicumyl peroxide and trimethylolpropane tris acrylic acid ester are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
Embodiment 5
For the preparation of a preparation method for the halogen-free flame retardant polypropylene composite material of high fondant-strength sheet material, the method comprises the following steps:
1) take the acrylic resin T30S of 70 parts, the polyethylene N150 of 30 parts, the compound flame retardant of 25 parts, the dicumyl peroxide of 0.2 part, the triallyl cyanate of 0.6 part, the antioxidant 1010 of 0.2 part, the irgasfos 168 of 0.4 part and the N of 0.5 part, N'-ethylene bis stearamide;
First acrylic resin T30S, polyethylene N150, dicumyl peroxide and triallyl cyanate are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
Adopt casting method that the matrix material of above-described embodiment gained is made to the sheet material that thickness is 0.43mm, by the following method the performance of sheet material is tested, test result is as shown in table 1.
1) melting index: press ASTMD1238(230 ℃, 2.16kg) standard is tested.
2) solution intensity: adopt the Geottfert Rheotens melt strength instrument of German Geottfert Werkstoff Pruefmaschinen company to measure.
3) tear strength: evaluate by HG2-167-6 standard.
4) flame retardant properties: evaluate by UL94 vertical combustion testing standard.
The test result of table 1 matrix material is as shown in table 1
The content of mentioning in above-described embodiment is not limitation of the invention, is not departing under the prerequisite of inventive concept of the present invention, and any apparent replacement is all within protection scope of the present invention.
Claims (7)
1. for the preparation of the halogen-free flame retardant polypropylene composite material of high fondant-strength sheet material, by the raw material of following mass fraction, formed: 0.2 ~ 0.5 part of 50 ~ 70 parts of acrylic resins, 10 ~ 30 parts of polyvinyl resins, 10 ~ 25 parts of compound flame retardants, 0.1 ~ 0.2 part of main linking agent, 0.1 ~ 0.6 part of additional crosslinker, 0.2 ~ 0.6 part, oxidation inhibitor and lubricant; Wherein,
Described acrylic resin is the linear homo-polypropylene resin of melting index between 1 ~ 10g/10min;
Described polyvinyl resin is the linear low density polyethylene resin of melting index between 1 ~ 4g/10min;
Described compound flame retardant is by phosphonium flame retardant, containing nitrogen combustion inhibitor and composite the obtaining of phosphorus phosphorus-nitrogen coordinated fire-retardant agent.
2. the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material according to claim 1, it is characterized in that: described main linking agent is dicumyl peroxide, 2,5-dimethyl-2,5 bis(t-butylperoxy) hexanes, 2,5-dimethyl-2,5 bis(t-butylperoxy) acetylene, peroxidation two (4-chlorobenzoyl) and 1,1-di-t-butyl peroxy-3, at least one in 3,5-trimethyl-cyclohexane.
3. the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material according to claim 1, it is characterized in that: described additional crosslinker is trimethylolpropane tris acrylic acid ester, trimethylolpropane trimethacrylate, N, N '-phenyl-bismaleimide, 1, at least one in 2-polyhutadiene, diene third class phthalic acid ester and triolefin third class base cyanate.
4. the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material according to claim 1, is characterized in that: described oxidation inhibitor is any one or several combination in oxidation inhibitor B215, antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098 and irgasfos 168.
5. the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material according to claim 1, it is characterized in that: described lubricant is polyethylene wax, calcium stearate, Zinic stearas and N any one or several combination in N'-ethylene bis stearamide.
6. according to a preparation method for the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material described in any one in claim 1 to 5, the method comprises the following steps:
1) take the raw material of formula ratio, first acrylic resin, polyvinyl resin, main linking agent and additional crosslinker are placed in to high-speed mixer and stir 2 ~ 4min, then add other raw material and stir 2 ~ 4min;
2) raw material after step 1) is admitted in twin screw extruder and melt extrudes, then tie rod pelletizing, and wherein, the temperature of melting process Raw is 180 ± 20 ℃, and the processing temperature of twin screw extruder is 180 ± 10 ℃, and rotating speed is 200 ~ 500rmp.
7. according to the halogen-free flame retardant polypropylene composite material for the preparation of high fondant-strength sheet material described in any one in claim 1 to 5, be applied to the sheet production that thickness is 0.3 ~ 0.6mm.
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|---|---|---|---|---|
| CN111218062A (en) * | 2020-02-18 | 2020-06-02 | 东莞市高能高分子材料有限公司 | High-strength flame-retardant PP composite material and preparation method thereof |
| CN112127044A (en) * | 2020-09-01 | 2020-12-25 | 福建长庚新材料股份有限公司 | High-flame-retardancy needle-punched non-woven fabric and preparation method thereof |
| CN112210169A (en) * | 2020-10-26 | 2021-01-12 | 江苏金发科技新材料有限公司 | Polypropylene composite material for filter bottle of water purifier and preparation method thereof |
| CN112538210A (en) * | 2020-12-11 | 2021-03-23 | 苏州通优新材料科技有限公司 | Deformation-resistant low-eccentricity thermoplastic semiconductive shielding material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111218062A (en) * | 2020-02-18 | 2020-06-02 | 东莞市高能高分子材料有限公司 | High-strength flame-retardant PP composite material and preparation method thereof |
| CN112127044A (en) * | 2020-09-01 | 2020-12-25 | 福建长庚新材料股份有限公司 | High-flame-retardancy needle-punched non-woven fabric and preparation method thereof |
| CN112210169A (en) * | 2020-10-26 | 2021-01-12 | 江苏金发科技新材料有限公司 | Polypropylene composite material for filter bottle of water purifier and preparation method thereof |
| CN112538210A (en) * | 2020-12-11 | 2021-03-23 | 苏州通优新材料科技有限公司 | Deformation-resistant low-eccentricity thermoplastic semiconductive shielding material and preparation method and application thereof |
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