CN103113705A - Transparent cold-resistant flame-retardant polypropylene material and preparation method thereof - Google Patents
Transparent cold-resistant flame-retardant polypropylene material and preparation method thereof Download PDFInfo
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- CN103113705A CN103113705A CN2013100396409A CN201310039640A CN103113705A CN 103113705 A CN103113705 A CN 103113705A CN 2013100396409 A CN2013100396409 A CN 2013100396409A CN 201310039640 A CN201310039640 A CN 201310039640A CN 103113705 A CN103113705 A CN 103113705A
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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
- 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
- B29C2948/92704—Temperature
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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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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Abstract
The invention discloses a transparent cold-resistant flame-retardant polypropylene material and a preparation method thereof. The material comprises the following components in parts by weight: 65-85 parts of polypropylene resin, 0.1-0.3 part of white oil, 5-20 parts of ethylene-octene copolymer, 3-10 parts of linear low-density polyethylene, 1-5 parts of phosphorus-nitrogen-bromine composite flame retardant, 0.1-0.4 part of flame-retardant synergist, 0.1-0.4 part of nucleating agent, 0.2-0.5 part of antioxidant and 0.2-0.5 part of lubricant. The phosphorus-nitrogen-bromine composite flame retardant comprises the following components in parts by weight: 60-90 parts of organic or inorganic hypophosphite, 10-30 parts of phosphoric-acid-containing piperazidine hydrobromide and 0.5-5 parts of silane coupling agent. The polypropylene material disclosed by the invention has high transparency and high cold resistance as well as flame retardancy. The material has the advantages of favorable compatibility and precipitation resistance, and can be used for preparing plastic products requiring high transparency, high cold resistance and flame retardancy.
Description
Technical field
The present invention relates to a kind of transparency high and low temperature resistant and taken into account the transparent cold-resistant anti-flaming polypropylene material of the flame retardant resistance of material; The invention still further relates to the preparation method of this anti-flaming polypropylene material.
Background technology
Polypropylene (PP) is a kind of general-purpose thermoplastic plastic that is obtained by propylene polymerization.Because its raw material sources are abundant, synthesis technique is simpler, compare PP with other general-purpose thermoplastic plastics and have the characteristics such as density is little, price is low, processibility is good, its yield strength, tensile strength, surface hardness and Young's modulus are all more excellent, and outstanding environmental stress cracking and wear resistance are arranged, be widely used in industrial every field.
Polypropylene easily forms large spherocrystal because the crystallization velocity of its melt is relatively slow, therefore its goods light transmission is poor, outward appearance lacks aesthetic feeling, makes polypropylene (PP) be restricted in the transparent material Application Areas.And polypropylene (PP) is through after transparent modified, not only can follow the advantages such as its light weight, inexpensive, health, high temperature resistant, easy machine-shaping, and the transparency and surface gloss can compare favourably with some other transparent resin (polycarbonate, polystyrene PS etc.), the ratio of performance to price also is better than PC, PS, PET etc., therefore be widely used in the fields such as transparent container, medicine equipment, household articles.
Low-temperature flexibility is relatively poor is polyacrylic one large significantly shortcoming, and especially in the lower area of some temperature, polyacrylic this shortcoming embodies particularly evidently; Polypropylene is met fiery easy firing, thermal value is high, combustionvelocity is fast, easily presence of fire, and flame propagation speed is difficult for extinguishing, and causes great injury for people's life, property.These all make its Application Areas be subject to great restriction.Therefore, develop and not only have high-clarity, but also have high cold-resistant and polypropylene material that have a flame-retarding characteristic and seem and be necessary very much.A kind of toughened cold-resistant transparent modified polypropylene material and preparation method are disclosed in application number is 200910096204.9 specification sheets, it is mainly to realize the polyacrylic exploitation of toughened cold-resistant transparent, can be for the manufacture of the plastics with toughened cold-resistant transparent requirement.
Summary of the invention
The present invention seeks to propose a kind of transparent cold-resistant anti-flaming polypropylene material, this material has also been taken into account the flame retardant resistance of material when realizing high-clarity and high winter hardiness.
The present invention realizes by the following technical solutions,
A kind of transparent cold-resistant anti-flaming polypropylene material, the parts by weight proportioning of this material component is as follows:
65 ~ 85 parts of acrylic resins
0.1 ~ 0.3 part of white oil
5 ~ 20 parts of toughner
3 ~ 10 parts of linear low density polyethylenes
The phosphorus-nitrogen containing bromine is 1 ~ 5 part of compound flame retardant
0.1 ~ 0.4 part of fire retarding synergist
0.1 ~ 0.4 part of nucleator
0.2 ~ 0.5 part, oxidation inhibitor
0.2 ~ 0.5 part of lubricant
Described fire retardant is to have transparent effect in resin and fire-retardant phosphorus-nitrogen containing bromine is compound flame retardant, preferably mix by organic or inorganic hypophosphite, phosphorous acids piperazine hydrobromide, silane coupling agent the compound flame retardant that makes, wherein the parts by weight of this each component of compound flame retardant are 60 ~ 90 parts of organic or inorganic hypophosphite, 10 ~ 30 parts of phosphorous acids piperazine hydrobromides, 0.5 ~ 5 part of silane coupling agent.
described organic or inorganic hypophosphite is the dimethyl hypo-aluminum orthophosphate, the diethyl hypo-aluminum orthophosphate, the methylethyl hypo-aluminum orthophosphate, the dipropyl hypo-aluminum orthophosphate, the di-isopropyl hypo-aluminum orthophosphate, the dibutyl hypo-aluminum orthophosphate, the diisobutyl hypo-aluminum orthophosphate, the phenyl hypo-aluminum orthophosphate, the aminomethyl phenyl hypo-aluminum orthophosphate, the ethylphenyl hypo-aluminum orthophosphate, the p-methoxy-phenyl hypo-aluminum orthophosphate, the ethoxyl phenenyl hypo-aluminum orthophosphate, hypo-aluminum orthophosphate, the cyclohexyl hypo-aluminum orthophosphate, the dimethyl calcium propionate, the diethyl calcium propionate, the methylethyl calcium propionate, the dipropyl calcium propionate, the di-isopropyl calcium propionate, the dibutyl calcium propionate, the diisobutyl calcium propionate, the phenyl calcium propionate, the aminomethyl phenyl calcium propionate, the ethylphenyl calcium propionate, the p-methoxy-phenyl calcium propionate, the ethoxyl phenenyl calcium propionate, calcium propionate, the cyclohexyl calcium propionate, the dimethyl zinc hypophosphite, the diethyl zinc hypophosphite, the methylethyl zinc hypophosphite, the dipropyl zinc hypophosphite, the di-isopropyl zinc hypophosphite, the dibutyl zinc hypophosphite, the diisobutyl zinc hypophosphite, the phenyl zinc hypophosphite, the aminomethyl phenyl zinc hypophosphite, the ethylphenyl zinc hypophosphite, the p-methoxy-phenyl zinc hypophosphite, the ethoxyl phenenyl zinc hypophosphite, zinc hypophosphite, at least a in the cyclohexyl zinc hypophosphite, described phosphorous acids piperazine hydrobromide is at least a in piperazine phosphate hydrobromate, piperazine pyrophosphate hydrobromate, polyphosphoric acid piperazine hydrobromide, above-mentioned substance is commercial.
Described acrylic resin is the transparent stage block copolymerization polypropylene, adopts the transparency that this resin can the Reinforced Polypropylene material.The transparent stage block copolymerization polypropylene is commercial.
Described white oil claims again paraffin oil, refer to through purification, the mixing-in fat hydrocarbon of positive structure narrow fraction that hydrogenation is saturated; White oil can increase the brightness of polypropylene material, and plays lubricated effect.
Described toughner is ethylene-octene copolymer, propylene-ethylene copolymers, and preferred toughner is ethylene-octene copolymer; Toughner can reduce polypropylene material fragility, improve shock resistance.Ethylene-octene copolymer, propylene-ethylene copolymers are commercial.
Described linear low density polyethylene has the performances such as winter hardiness, environmental stress crack resistance, impact strength, tear-resistant intensity, appropriate employing linear low density polyethylene and the combination of toughner ratio, shock strength and transmittance that can strongthener.
Described fire retarding synergist 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), 1,1-di-tert-butyl peroxide-3,3, at least a in the 5-trimethyl-cyclohexane; Fire retarding synergist plays the coordinate performance in whole fire-retardant compatibility system, improve the mating reaction of flame retardant effect; Above-mentioned substance is effect commercial and that have initiation and catalyzed reaction.
Described nucleator be in sorbitol derivatives class, organic phosphate, organic carboxyl acid salt, rosin lipid any, preferred nucleator is the sorbitol derivatives class.Nucleator can promote the crystallisation process of molecule and accelerate crystallization velocity, makes molecule have microlitic structure, thereby improves the performances such as transparency, rigidity, surface luster and toughness of polypropylene material.
Described oxidation inhibitor is the one or more combination in antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098, irgasfos 168, complex type antioxidant B215; The mixture that complex type antioxidant is comprised of antioxidant 1010 and irgasfos 168.Wherein when mixing use with antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098 with irgasfos 168, oxidation inhibitor acts synergistically, and can more effectively suppress thermal destruction and the oxidative degradation of polymkeric substance.Above-mentioned various oxidation inhibitor is all industry matured products.
Described lubricant is polyethylene wax, calcium stearate, Zinic stearas, N, the one or more combination in the N'-ethylene bis stearamide; Above-mentioned raw materials selects several mixing results of use better, and it promotes attenuating of resin structure by the nucleation time that shortens in the polypropylene material nucleation process, and then improves mechanical property and the transparency of polypropylene material.
The preparation method of described transparent cold-resistant anti-flaming polypropylene material is as follows:
(1) take silane coupling agent, median size all at organic or inorganic hypophosphite and the phosphoric acid class piperazine hydrobromide of 5 ~ 8 μ m according to the weight proportion of compound flame retardant component in claim 1, after drying, organic or inorganic hypophosphite and phosphoric acid class piperazine hydrobromide being put into height stirs machine and stirs, add silane coupling agent in whipping process, obtain compound flame retardant used;
(2) take by weight ratio various raw materials, standby;
(3) first acrylic resin and white oil are put in and stir 2 ~ 4 minutes in high-speed mixer, and then added other raw material stirring 2 ~ 4 minutes;
(4) step (3) gained mixture is added twin screw extruder, carry out extruding pelletization, extrusion temperature is 170 ~ 190 ℃.
Beneficial effect of the present invention is: a kind of transparent cold-resistant anti-flaming polypropylene material provided by the invention, by selecting suitable acrylic resin, through adjusting model and the ratio of LLDPE and toughner, and when adding suitable transparent nucleater, select composite and fire retardant modification, it is used in better transparency and flame retardant effect are arranged in acrylic resin, and have good consistency, the anti-characteristic such as separate out, realized high-clarity and high winter hardiness and taken into account the flame retardant resistance of material.The transmittance of the transparent cold-resistant anti-flaming polypropylene material of gained can reach more than 70%, and simple beam impact strength (35 ℃) can reach 4.5 kJ/m
2Above, the fire-retardant UL 94 V-2 ranks that reach.This polypropylene material can be used for making have high-clarity, sheet material, film, packaging vessel and the household articles of low temperature resistant, fire-retardant requirement, widened the range of application of transparent polypropylene.The production technique of this polypropylene material is simple, easily implements.Related component is all ripe conventional material, is convenient to large-scale promotion and uses.
Embodiment
A kind of transparent cold-resistant anti-flaming polypropylene material of the present invention, the parts by weight proportioning of this material component is as follows:
65 ~ 85 parts of acrylic resins
0.1 ~ 0.3 part of white oil
5 ~ 20 parts of toughner
3 ~ 10 parts of linear low density polyethylenes
The phosphorus-nitrogen containing bromine is 1 ~ 5 part of compound flame retardant
0.1 ~ 0.4 part of fire retarding synergist
0.1 ~ 0.4 part of nucleator
0.2 ~ 0.5 part, oxidation inhibitor
0.2 ~ 0.5 part of lubricant
The component that described phosphorus-nitrogen containing bromine is compound flame retardant and the parts by weight of component are 60 ~ 90 parts of organic or inorganic hypophosphite, 10 ~ 30 parts of phosphorous acids piperazine hydrobromides, 0.5 ~ 5 part of silane coupling agent.The prepared polypropylene material of parts by weight proportioning by this component not only has flame retardant resistance and also has high-clarity, high winter hardiness.
Described acrylic resin is the transparent stage block copolymerization polypropylene.
Described toughner be in ethylene-octene copolymer, propylene-ethylene copolymers any, preferred toughner is ethylene-octene copolymer.
Described fire retarding synergist 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), 1,1-di-tert-butyl peroxide-3,3, at least a in the 5-trimethyl-cyclohexane.
Described nucleator be in sorbitol derivatives class, organic phosphate, organic carboxyl acid salt, rosin lipid any, preferred nucleator is the sorbitol derivatives class.
Described oxidation inhibitor is the one or more combination in antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098, irgasfos 168, complex type antioxidant B215; The mixture that formed by antioxidant 1010 and irgasfos 168 of complex type antioxidant wherein.Described lubricant is polyethylene wax, calcium stearate, Zinic stearas, N, the one or more combination in the N'-ethylene bis stearamide.
described organic or inorganic hypophosphite is the dimethyl hypo-aluminum orthophosphate, the diethyl hypo-aluminum orthophosphate, the methylethyl hypo-aluminum orthophosphate, the dipropyl hypo-aluminum orthophosphate, the di-isopropyl hypo-aluminum orthophosphate, the dibutyl hypo-aluminum orthophosphate, the diisobutyl hypo-aluminum orthophosphate, the phenyl hypo-aluminum orthophosphate, the aminomethyl phenyl hypo-aluminum orthophosphate, the ethylphenyl hypo-aluminum orthophosphate, the p-methoxy-phenyl hypo-aluminum orthophosphate, the ethoxyl phenenyl hypo-aluminum orthophosphate, hypo-aluminum orthophosphate, the cyclohexyl hypo-aluminum orthophosphate, the dimethyl calcium propionate, the diethyl calcium propionate, the methylethyl calcium propionate, the dipropyl calcium propionate, the di-isopropyl calcium propionate, the dibutyl calcium propionate, the diisobutyl calcium propionate, the phenyl calcium propionate, the aminomethyl phenyl calcium propionate, the ethylphenyl calcium propionate, the p-methoxy-phenyl calcium propionate, the ethoxyl phenenyl calcium propionate, calcium propionate, the cyclohexyl calcium propionate, the dimethyl zinc hypophosphite, the diethyl zinc hypophosphite, the methylethyl zinc hypophosphite, the dipropyl zinc hypophosphite, the di-isopropyl zinc hypophosphite, the dibutyl zinc hypophosphite, the diisobutyl zinc hypophosphite, the phenyl zinc hypophosphite, the aminomethyl phenyl zinc hypophosphite, the ethylphenyl zinc hypophosphite, the p-methoxy-phenyl zinc hypophosphite, the ethoxyl phenenyl zinc hypophosphite, zinc hypophosphite, at least a in the cyclohexyl zinc hypophosphite, described phosphorous acids piperazine hydrobromide is at least a in piperazine phosphate hydrobromate, piperazine pyrophosphate hydrobromate, polyphosphoric acid piperazine hydrobromide.
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
The transparent cold-resistant anti-flaming polypropylene material of this embodiment, wherein said phosphorus-nitrogen containing bromine is that compound flame retardant is to be the hypo-aluminum orthophosphate of silane treatment of 1 part and the composition of piperazine pyrophosphate hydrobromate with weight part, the ratio of hypo-aluminum orthophosphate and piperazine pyrophosphate hydrobromate is 4.5:1, example 1 ~ 4 fire retardant is consistent, and raw material forms as shown in table 1:
| Material name | Parts by weight |
| Acrylic resin 5090T | 85 |
| The 15# white oil | 0.1 |
| Toughner POE 8150 | 10 |
| Linear low density polyethylene 7042 | 3 |
| The fire retardant that composite phosphorus-nitrogen containing bromine is | 3.5 |
| Fire retarding synergist DCP | 0.2 |
| Sorbose alcohols nucleator M3988 | 0.1 |
| Oxidation inhibitor B215 | 0.4 |
| Lubricate EBS | 0.4 |
Table 1
Its preparation method is:
(1) weigh various raw materials by the weight proportion in table;
(2) first acrylic resin and white oil are put in high-speed mixer and stirred 2-4 minute, and then added other raw material stirring 2-4 minute;
(3) step (2) gained mixture is added twin screw extruder, carry out extruding pelletization, extrusion temperature is set to 170-190 ℃.
Embodiment 2
The transparent cold-resistant anti-flaming polypropylene material of this embodiment, raw material forms as shown in table 2:
| Material name | Parts by weight |
| Acrylic resin 5090T | 80 |
| The 15# white oil | 0.1 |
| Toughner POE 8150 | 10 |
| Linear low density polyethylene 7042 | 5 |
| The fire retardant that composite phosphorus-nitrogen containing bromine is | 3.5 |
| Fire retarding synergist DCP | 0.2 |
| Sorbose alcohols nucleator M3988 | 0.2 |
| Oxidation inhibitor B215 | 0.4 |
| Lubricate EBS | 0.4 |
Table 2
Its preparation method is identical with embodiment 1.
Embodiment 3
The transparent cold-resistant anti-flaming polypropylene material of this embodiment, raw material forms as shown in table 3:
| Material name | Parts by weight |
| Acrylic resin 5090T | 75 |
| The 15# white oil | 0.1 |
| Toughner POE 8150 | 20 |
| Linear low density polyethylene 7042 | 10 |
| The fire retardant that composite phosphorus-nitrogen containing bromine is | 3.5 |
| Fire retarding synergist DCP | 0.2 |
| Sorbose alcohols nucleator M3988 | 0.3 |
| Oxidation inhibitor B215 | 0.4 |
| Lubricate EBS | 0.4 |
Table 3
Its preparation method is identical with embodiment 1.
Embodiment 4
The transparent cold-resistant anti-flaming polypropylene material of this embodiment, raw material forms as shown in table 4:
| Material name | Parts by weight |
| Acrylic resin 5090T | 70 |
| The 15# white oil | 0.2 |
| Toughner POE 8150 | 16 |
| Linear low density polyethylene 7042 | 8 |
| The fire retardant that composite phosphorus-nitrogen containing bromine is | 1 |
| Fire retarding synergist DCP | 0.2 |
| Sorbose alcohols nucleator M3988 | 0.2 |
| Oxidation inhibitor B215 | 0.2 |
| Lubricate EBS | 0.2 |
Table 4
Its preparation method is identical with embodiment 1.
Embodiment 5
The transparent cold-resistant anti-flaming polypropylene material of this embodiment, wherein said phosphorus-nitrogen containing bromine is that compound flame retardant is to be the cyclohexyl zinc hypophosphite of silane treatment of 1 part and the composition of piperazine pyrophosphate hydrobromate with weight part, the ratio of cyclohexyl zinc hypophosphite and piperazine pyrophosphate hydrobromate is 5:1, and raw material forms as shown in table 5:
| Material name | Parts by weight |
| Acrylic resin 5090T | 65 |
| The 15# white oil | 0.3 |
| Toughner POE 8150 | 10 |
| Linear low density polyethylene 7042 | 5 |
| The fire retardant that composite phosphorus-nitrogen containing bromine is | 5 |
| Fire retarding synergist DCP | 0.2 |
| Sorbose alcohols nucleator M3988 | 0.2 |
| Oxidation inhibitor B215 | 0.5 |
| Lubricate EBS | 0.5 |
Table 5
Its preparation method is identical with embodiment 1.
Listed the performance test results of embodiment 1 ~ 5 prepared fire retardant material in table 6.
| Test event | Testing standard | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Simple beam impact strength (23 ℃), kJ/m2 | GB/T1043-93 | 9.8 | 11.0 | 10.6 | 11.3 | 11.2 |
| Simple beam impact strength (35 ℃), kJ/m2 | GB/T1043-93 | 3.8 | 4.1 | 4.4 | 4.6 | 4.8 |
| Transmittance, % | GB/T2410-2008 | 62.4 | 65.3 | 69.1 | 70.2 | 69.8 |
| Fire-retardant | UL94 V2 | Qualified | Qualified | Qualified | Qualified | Qualified |
Table 6
As can be seen from the above table, improve within the specific limits the ratio of nucleator, can improve the transparency of material, and shock strength is increased correspondingly also; Adopt different linear low density polyethylenes and the combination of toughner ratio, shock strength, transmittance data are also variant.High, low temperature resistant by the prepared polypropylene material transparency of above-mentioned formula, shock strength is high, satisfy simultaneously to reach other requirement of UL94 V2 flame retardant grade.
According to the elaboration in above specification sheets, those skilled in the art in the invention can also carry out suitable change and modification to above-mentioned embodiment.Therefore, the content of mentioning in above-described embodiment is not to be limitation of the invention, and under the prerequisite that does not break away from inventive concept of the present invention, any apparent replacement is all within protection scope of the present invention.
Claims (10)
1. transparent cold-resistant anti-flaming polypropylene material, the parts by weight proportioning of this material component is as follows:
65 ~ 85 parts of acrylic resins
0.1 ~ 0.3 part of white oil
5 ~ 20 parts of toughner
3 ~ 10 parts of linear low density polyethylenes
The phosphorus-nitrogen containing bromine is 1 ~ 5 part of compound flame retardant
0.1 ~ 0.4 part of fire retarding synergist
0.1 ~ 0.4 part of nucleator
0.2 ~ 0.5 part, oxidation inhibitor
0.2 ~ 0.5 part of lubricant
The component that described phosphorus-nitrogen containing bromine is compound flame retardant and the parts by weight of component are 60 ~ 90 parts of organic or inorganic hypophosphite, 10 ~ 30 parts of phosphorous acids piperazine hydrobromides, 0.5 ~ 5 part of silane coupling agent.
2. transparent cold-resistant anti-flaming polypropylene material according to claim 1, it is characterized in that: described acrylic resin is the transparent stage block copolymerization polypropylene.
3. transparent cold-resistant anti-flaming polypropylene material according to claim 2 is characterized in that: described toughner be in ethylene-octene copolymer, propylene-ethylene copolymers any.
4. transparent cold-resistant anti-flaming polypropylene material according to claim 3, it is characterized in that: described toughner is ethylene-octene copolymer.
5. transparent cold-resistant anti-flaming polypropylene material according to claim 2, it is characterized in that: described fire retarding synergist 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), 1,1-di-tert-butyl peroxide-3, at least a in 3,5-trimethyl-cyclohexane.
6. transparent cold-resistant anti-flaming polypropylene material according to claim 2 is characterized in that: described nucleator be in sorbitol derivatives class, organic phosphate, organic carboxyl acid salt, rosin lipid any.
7. transparent cold-resistant anti-flaming polypropylene material according to claim 6, it is characterized in that: described nucleator is the sorbitol derivatives class.
8. transparent cold-resistant anti-flaming polypropylene material according to claim 2, it is characterized in that: described oxidation inhibitor is the one or more combination in antioxidant 1010, antioxidant 1076, oxidation inhibitor 1098, irgasfos 168, complex type antioxidant B215; Described lubricant is polyethylene wax, calcium stearate, Zinic stearas, N, the one or more combination in the N'-ethylene bis stearamide.
9. transparent cold-resistant anti-flaming polypropylene material according to claim 2, it is characterized in that: described organic or inorganic hypophosphite is the dimethyl hypo-aluminum orthophosphate, the diethyl hypo-aluminum orthophosphate, the methylethyl hypo-aluminum orthophosphate, the dipropyl hypo-aluminum orthophosphate, the di-isopropyl hypo-aluminum orthophosphate, the dibutyl hypo-aluminum orthophosphate, the diisobutyl hypo-aluminum orthophosphate, the phenyl hypo-aluminum orthophosphate, the aminomethyl phenyl hypo-aluminum orthophosphate, the ethylphenyl hypo-aluminum orthophosphate, the p-methoxy-phenyl hypo-aluminum orthophosphate, the ethoxyl phenenyl hypo-aluminum orthophosphate, hypo-aluminum orthophosphate, the cyclohexyl hypo-aluminum orthophosphate, the dimethyl calcium propionate, the diethyl calcium propionate, the methylethyl calcium propionate, the dipropyl calcium propionate, the di-isopropyl calcium propionate, the dibutyl calcium propionate, the diisobutyl calcium propionate, the phenyl calcium propionate, the aminomethyl phenyl calcium propionate, the ethylphenyl calcium propionate, the p-methoxy-phenyl calcium propionate, the ethoxyl phenenyl calcium propionate, calcium propionate, the cyclohexyl calcium propionate, the dimethyl zinc hypophosphite, the diethyl zinc hypophosphite, the methylethyl zinc hypophosphite, the dipropyl zinc hypophosphite, the di-isopropyl zinc hypophosphite, the dibutyl zinc hypophosphite, the diisobutyl zinc hypophosphite, the phenyl zinc hypophosphite, the aminomethyl phenyl zinc hypophosphite, the ethylphenyl zinc hypophosphite, the p-methoxy-phenyl zinc hypophosphite, the ethoxyl phenenyl zinc hypophosphite, zinc hypophosphite, at least a in the cyclohexyl zinc hypophosphite, described phosphorous acids piperazine hydrobromide is at least a in piperazine phosphate hydrobromate, piperazine pyrophosphate hydrobromate, polyphosphoric acid piperazine hydrobromide.
10. the preparation method of transparent cold-resistant anti-flaming polypropylene material according to claim 2, the method step is as follows:
(1) take silane coupling agent, median size all at organic or inorganic hypophosphite and the phosphoric acid class piperazine hydrobromide of 5 ~ 8 μ m according to the weight proportion of compound flame retardant component in claim 1, after drying, organic or inorganic hypophosphite and phosphoric acid class piperazine hydrobromide being put into height stirs machine and stirs, add silane coupling agent in whipping process, obtain compound flame retardant used;
(2) take by weight ratio various raw materials, standby;
(3) first acrylic resin and white oil are put in and stir 2 ~ 4 minutes in high-speed mixer, and then added other raw material stirring 2 ~ 4 minutes;
(4) step (3) gained mixture is added twin screw extruder, carry out extruding pelletization, extrusion temperature is 170 ~ 190 ℃.
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