CN102618015B - Light color weatherproof halogen-free flame retardant elastomer composite - Google Patents
Light color weatherproof halogen-free flame retardant elastomer composite Download PDFInfo
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- CN102618015B CN102618015B CN2011104234368A CN201110423436A CN102618015B CN 102618015 B CN102618015 B CN 102618015B CN 2011104234368 A CN2011104234368 A CN 2011104234368A CN 201110423436 A CN201110423436 A CN 201110423436A CN 102618015 B CN102618015 B CN 102618015B
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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
- B29C2948/9258—Velocity
- B29C2948/9259—Angular 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
-
- 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
- B29C2948/92885—Screw or gear
-
- 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 light color weatherproof halogen-free flame retardant elastomer composite, which is composed of the following components by weight: 15-35% of polyphenylene ether resin, 3-30% of a thermoplastic polyester elastomer, 15-30% of a compatilizer, 20-35% of a compound flame retardant, 5-15% of a plasticizer, 2-5% of a light-shielding agent, 2-5% of a processing aid, and 0.8-6% of a stabilizer. The compound flame retardant is a mixture of piperazine pyrophosphate and melamine pyrophosphate, wherein the piperazine pyrophosphate accounts for 10-80wt% of the compound flame retardant. The halogen-free flame retardant elastomer composite of the invention effectively inhibits the precipitation of ''coke materials'' during processing, improves the processing performance of compositions, and has the characteristics of good weatherability, high halogen-free flame retardant grade, good mechanical performance, good ageing resistance as well as easy extrusion molding processing, thus being very suitable for the power lines of high-end consumer electronic and electrical products, and data transmission lines, etc.
Description
Technical field
The present invention relates to polymeric material field, be specifically related to a kind of halogen-free flame-retardant elastomer complex.
Background technology
The halide-containings such as polyvinyl chloride (PVC), chloroprene rubber have good flame retardant properties and are widely used in the electric wire industry, but can produce a large amount of toxic gases when fire or burning disposal, and human body is produced to harm greatly to environment.
Along with the raising of the mankind to environmental protection requirement; start to limit the use of Halogen material in electronic enterprises; halogen-free flame retarding elastomer material fire-retardant, the mechanical property good with it that polyphenylene oxide and styrenic elastomerics be resin matrix of take becomes one of preferred solution of current replacement PVC cable material; but contain polyphenylene oxide resin and styrenic elastomer compositions weather resistance when preparing light-coloured prods is poor; produce variable color within a short period of time, can not meet the requirement of the product light color appearance design that more can attract the human consumer.
Patent document 1(Patent Office of the People's Republic of China publication: CN101663357A) disclose and take the composition that polyphenylene oxide, polystyrene-poly (ethene-butylene)-polystyrene triblock copolymer, polybutene, ethylene-propylene rubber, mineral oil, dihydroxyphenyl propane two (phenyl phosphate ester), magnesium hydroxides, Tripyrophosphoric acid trimeric cyanamide, white pigment be component, composition has excellent flame retardant properties, mechanical property and weather resistance, can be used in the preparation of electric wire.Yet, as patent document 2(Patent Office of the People's Republic of China publication: CN101827885A) pointed, used Tripyrophosphoric acid trimeric cyanamide composition meeting generation in the course of processing " burnt material " precipitate as fire retardant, the quality that this can reduce production efficiency and affect product, the technical scheme of patent document 2 is to separate out problem for solving injection moulding with Jiao's material of polyolefins material.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of halogen-free flame-retardant elastomer complex with excellent weathering resistance, mechanical property and ageing-resistant performance is provided, and it has solved containing the polyphenylene oxide halogen-free flame-retardant elastomer complex course of processing " burnt material " and has separated out and the problem of weather resistance deficiency.
To achieve these goals, the present invention adopts following technical scheme:
A kind of halogen-free flame-retardant elastomer complex, the component of being calculated by following percentage ratio by weight forms:
Polyphenylene oxide resin 15～35%, thermoplastic polyester elastomer 3～30%, compatilizer 15-30%, compound flame retardant 20～35%, softening agent 5～15%, photomask agent 2-5%, processing aid 2-5%, stablizer 0.8～6%;
The mixture that described compound flame retardant is piperazine pyrophosphate and melamine pyrophosphate, wherein piperazine pyrophosphate accounts for 10 ~ 80% of compound flame retardant weight.
Described polyphenylene oxide resin comprises all known polyphenylene oxide resins.Described polyphenylene oxide resin is the resin of limiting viscosity between 0.30～0.60dl/g of measuring in 25 ℃ of chloroforms.Can use a kind of polyphenylene oxide resin of independent limiting viscosity, also can select several different qualities viscosity polyphenyl ether resin compositions.The outward appearance of polyphenylene oxide can be Powdered can be also particulate state.
Polyphenylene oxide resin intensity is high, good heat resistance, and the electrical property excellence, and resin itself has certain flame retardant properties.In the present invention, the polyphenylene oxide component can improve the mechanical property of composition, electrical property, and play the effect of char-forming agent and improve the flame retardant properties of composition in whole composition system, from elastic composition flame retardant properties aspect, consider, polyphenylene oxide content can not be lower than 15 % by weight, and from the elongation at break aspect consideration of elastic composition, polyphenylene oxide content can not be higher than 35%.
Described thermoplastic polyester elastomer refers to the segmented copolymer that contains the hard section of polyester and polyester soft segment, and polyester soft segment and uncrystallized polyester form amorphous phase, and the hard section of polyester partial crystallization forms crystallization phases and plays physical crosslinking point.Thermoplastic polyester elastomer, due to not containing unsatisfied chemical bond, itself has good weather resistance.The hardness variable range of thermoplastic polyester elastomer is wide, generally speaking, the tensile strength of thermoplastic polyester elastomer reduces along with lower hardness, modulus in flexure increases along with the increase of hardness, tensile strength requirement from the present invention's combination, the elastic hardness of selected thermoplastic polyester should be lower than shore hardness 30D, and from the flexibility requirement, the elastic hardness of selected thermoplastic polyester should be higher than shore hardness 50D.
Described compatilizer is the styrene-ethylene/butylene-styrene block copolymer grafted maleic anhydride, styrene-ethylene/propylene-styrene segmented copolymer grafted maleic anhydride.Add the purpose of compatilizer to be to improve the consistency of thermoplastic polyester elastomer and polyphenylene oxide.
The mixture that described compound flame retardant is piperazine pyrophosphate and melamine pyrophosphate, wherein piperazine pyrophosphate accounts for 10 ~ 80% of compound flame retardant weight.For composition of the present invention, when selecting separately melamine pyrophosphate to do fire retardant, flame retardant properties is difficult to reach the V-0 rank of UL94 standard testing, and adds the piperazine pyrophosphate of certain content can produce with it synergistic effect, makes composition easily by V-0 rank flame retardant test.
Described softening agent is a kind of of dihydroxyphenyl propane two (diphenyl phosphoester), naphthenic oil or both mixtures.Softening agent add the dispersiveness that can effectively improve each component, reduce plastic melt and the bonding strength of metallic surface and the internal friction of plastic melt, be conducive to improve the melt flow rate (MFR) of composition, regulate the functions such as pliability of composition, and dihydroxyphenyl propane two (diphenyl phosphoester) also contributes to improve the effect of flame retardant properties for the present composition.
Described processing aid is pentaerythritol stearate.Pentaerythritol stearate is the wax-like thing of white hard high-melting-point, while using in high-speed mixing equipment easily and other components mix, be difficult for conglomeration, and its good heat resistance, under 350 ℃, obviously do not decompose, add pentaerythritol stearate and play lubrication in composition, compound flame retardant better is scattered in composition, avoided compound flame retardant to disperse bad and reunited and then make in the course of processing to produce burnt material.
Described photomask agent is titanium dioxide.Titanium dioxide is generally used for the white pigment of polymer-based composition and use thereof in packaging, it has stronger colouring power, during as pigment, its addition is usually lower, the inventor studies and finds for composition of the present invention, its addition surpasses 2 % by weight when above, can effectively improve the anti-tarnishing ability of composition, consider from the product mechanical properties, its addition should not surpass 5 % by weight.
Described stablizer is free radical scavenger, metal passivator kind antioxidant, magnesium oxide or ultraviolet absorbers.Described free radical scavenger agent is 1,3,5-tri-(the 4-tertiary butyl-3-hydroxyl-2,6-dimethyl benzyl)-1,3,5-triazines-2,4,6-(1H, 3H, 5H)-triketone; Described metal passivator kind antioxidant is preferably N, N-diacetyl adipyl two hydrazides, N-salicylidene-N-salicyl hydrazides or salicil hydrazine, and described ultraviolet absorbers is the hydroxybenzotriazole class.
Different from general polymeric blends, elastic composition of the present invention is for wire cable insulating and coating preparation, need the test aging resistance, through research, find, affecting two factors of elastic composition aging resistance of the present invention is that free yl induction decomposes and metal ion catalysis decomposes, because material in use with metallic contact, and the starting material polyphenylene oxide used is used the catalyzer that contains cupric ion in building-up process, material still has minimal residue after purifying, therefore in composition, add metal passivator to seem particularly important, residual metal ion reduces activity when adding metal passivator and can make elastomerics and metallic contact or in elastic composition, reduce the catalysis solarization of metal ion elastic composition.The addition of free radical scavenger and metal passivator reaches 0.2 % by weight and produces effectiveness when above, but both total addition levels should not surpass 1.5 % by weight, otherwise easily produce oxidation inhibitor, migrates to the elastic composition surface and " telling white powder " phenomenon occurs.
If there is more moisture in halogen-free flame retarding elastomer composition in the course of processing, easily cause the decomposition of compound flame retardant, produce acidic substance, can suppress or weaken the decomposition reaction generation magnesian adding.From mechanical properties, consider, magnesian addition should not surpass 5 % by weight.
Ultraviolet absorbers has hydroxy benzophenone ketone, hydroxybenzotriazole class, substituted acrylic ester, formamidine, benzoyl ketone etc., they have the conjugated structure of height, can absorb high-octane UV-light and change into heat energy, reduce the destruction of UV-light to polymkeric substance with this, the inventor experimental studies have found that, for the present composition, hydroxybenzotriazole class ultraviolet absorbers effect optimum.The ultraviolet absorbers addition reaches 0.2 % by weight and produces effectiveness when above, but addition is while surpassing 0.75 % by weight, and producing the probability of separating out increases.
Prepared by the preparation method as described below that uses of halogen-free flame-retardant elastomer complex of the present invention, the steps include: first polyphenylene oxide resin, elastomerics, compatilizer, compound flame retardant, softening agent, processing aid and stablizer after the high-speed mixer dispersing and mixing, by the twin screw extruder melting, mix, extrude, cooling, dry, pelletizing and packing.Each district's temperature of screw rod should remain between 200～260 ℃, and the length-to-diameter ratio of twin screw extruder is 36～48, and screw speed is 260～500 rev/mins.
Compared with prior art, the present invention has following beneficial effect: halogen-free flame-retardant elastomer complex of the present invention, effectively having suppressed " burnt material " in the course of processing separates out, improved the processing characteristics of composition, had a weather resistance good, the halogen-free flameproof grade is high, good mechanical property, ageing-resistant performance is good, easily carries out the characteristics of extrusion moulding processing, is suitable for very much supply lead, data transmission line of high-end consumer electronics electrical equipment etc.
Embodiment
Further explain the present invention below in conjunction with embodiment, but embodiment does not limit in any form to the present invention.
The preparation method of halogen-free flame retarding elastomer composition of the present invention, the steps include: first polyphenylene oxide resin, elastomerics, polyolefine, compound flame retardant, softening agent, processing aid and stablizer after the high-speed mixer dispersing and mixing, by the twin screw extruder melting, mix, extrude, cooling, dry, pelletizing and packing.Each district's temperature of screw rod should remain on 245 ℃, the twin screw extruder that uses Nanjing Rhea company to produce, and screw diameter is 40cm, and length-to-diameter ratio is 40, and screw speed is 350 rev/mins.
According to above-mentioned preparation method, embodiment and Comparative Examples adopt raw material as shown in table 1:
Table 1
| The trade mark | Brief introduction |
| PPE LXR035 | Polyphenylene oxide resin, limiting viscosity, can be commercially available from the blue star chemical industry at 0.35dl/g |
| PPE LXR045 | Polyphenylene oxide resin, limiting viscosity, can be commercially available from the blue star chemical industry at 0.45dl/g |
| PPE LXR055 | Polyphenylene oxide resin, limiting viscosity, can be commercially available from the blue star chemical industry at 0.55dl/g |
| H3030 | Thermoplastic polyester elastomer, shore hardness 30D, can buy from new plastic cement company of morning twilight section |
| H4040 | Thermoplastic polyester elastomer, shore hardness 40D, can buy from new plastic cement company of morning twilight section |
| H5550 | Thermoplastic polyester elastomer, shore hardness 48D, can buy from new plastic cement company of morning twilight section |
| H605 | Thermoplastic polyester elastomer, shore hardness 55D, can buy from new plastic cement company of morning twilight section |
| Tuftec M1911 | The styrene-ethylene/butylene-styrene block copolymer grafted maleic anhydride, can be commercially available from AKelastomers |
| Piperazine pyrophosphate | Fire retardant, |
| MELAPUR200-70 | The melamine pyrophosphate fire retardant, can be commercially available from basf company |
| BDP | Softening agent, can be commercially available from Zhejiang Wan Sheng chemical company |
| KDN4006 | Softening agent, can be commercially available from Shenzhen gram agate rubber oil limited liability company |
| RCL-69 | Photomask agent, can be commercially available from Australia Mei Lilian company |
| GLYCOLUBE P | Processing aid, can be commercially available from Long Sha company |
| CYANOX 1790 | Free radical scavenger, can be commercially available from the special company of U.S.'s cyanogen |
| MD 1024 | Metal passivator, can be commercially available from Ciba company |
| Magnesium oxide | Can buy from Guangzhou Shen Mao novel material Science and Technology Ltd. |
| Chisorb 5411 | Ultraviolet absorbers, can buy from two key chemical incs |
Each test is undertaken by following standard:
Tensile strength: injection moulding 4.0mm Elongation test batten, according to GB1040-2006, tested;
Elongation at break: injection moulding 4.0mm Elongation test batten, according to GB1040-2006, tested;
Combustionproperty: according to UL94, adopt the sample of 4.0mm to be tested;
Burnt material: according to above-mentioned preparation method, the setting feeding capacity is 35KG/ hour, gathers Jiao's material of separating out from die head while producing, and carries out Jiao's material and estimates (mg/10 minute);
Dielectric strength: tested according to GB1409;
The tensile strength burn-in test: injection moulding 4.0mm Elongation test batten, after aging 168 hours, according to GB1040-2006, tested aging back draft residual rate intensity=aging rear test value/aging rear test value * 100% in the ventilation baking oven of 136 ℃;
The elongation at break burn-in test: injection moulding 4.0mm Elongation test batten, after aging 168 hours, according to GB1040-2006, tested aging rear elongation at break residual rate=aging rear test value/aging rear test value * 100% in the ventilation baking oven of 136 ℃;
Shore hardness: injection moulding thickness is 6.0mm, and the circular testing plate that diameter is 25mm is tested according to ASTM D2240 shore hardness A type testing method.
The weather resistance test: prepare with injection molding method the sheet specimen that specification is 54 * 84 * 2mm, specimen is put into the color value L before the xenon lamp aging case
0, a
0, b
0, take out test after 500 hours at xenon lamp aging baking oven internal radiation sample and irradiate rear color value L
1, a
1, b
1.Color value beasurement base GB/T 3979 standards are carried out, xenon lamp irradiates test to be undertaken by GB/T 16422.2, xenon lamp aging baking oven model is ATLAS CI3000+ weatherometer, and illuminate condition is: continuous light, irradiance 0.50w/m2@340nm, 65 ± 3 ℃ of black standard temperatures, relative humidity 65 ± 5%, 38 ± 3 ℃ of spin manifold temperatures, sample spray (close/open) 102/18min.Characterize the quality of weather resistance according to the aberration △ E after xenon lamp aging baking oven pre-irradiation, the calculation formula of △ E is:
△E=[(L
0-L
1)
2+(a
0-a
1)
2+(b
0-b
1)
2]
1/2
The formula table of table 2 embodiment and the performance test results of composition
| Component | Comparative Examples 1 | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 2 |
| PPE LXR045 | 13 | 20 | 25 | 30 | 32 | 38 |
| H4040 | 46 | 34 | 29 | 24 | 22 | 16 |
| Tuftec M1911 | 6 | 6 | 6 | 6 | 6 | 6 |
| Piperazine pyrophosphate | 8 | 10 | 10 | 10 | 10 | 10 |
| MELAPUR200-70 | 15 | 15 | 15 | 15 | 15 | 15 |
| KDN4006 | 8 | 8 | 8 | 8 | 8 | 8 |
| GLYCOLUBE-P | 3 | 3 | 3 | 3 | 3 | |
| CYANOX 1790 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| MD 1024 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Magnesium oxide | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 |
| Chisorb 5411 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
| Add up to | 100 | 100 | 100 | 100 | 100 | 100 |
| Performance test | ||||||
| Tensile strength (MPa) | 13.5 | 15 | 16 | 19 | 23 | 31 |
| Elongation at break (%) | 280 | 245 | 220 | 210 | 200 | 120 |
| Combustionproperty | Not fire-retardant | V-0 | V-0 | V-0 | V-0 | V-1 |
| Burnt material amount (mg/10 minute) | 8 | 0.9 | 1 | 0.7 | 0.9 | 0.7 |
| Dielectric strength (MV/m) | 24 | 25 | 26 | 26 | 29 | 31 |
| Aging back draft residual rate intensity (%) | 97 | 96 | 98 | 98 | 97 | 98 |
| Aging rear elongation at break residual rate (%) | 75 | 86 | 87 | 90 | 91 | 92 |
| Shore hardness (A) | 82 | 85 | 86 | 88 | 91 | >100 |
| Aberration (△ E) | 0.96 | 1.02 | 1.68 | 2.82 | 4.62 | 8.56 |
105 ℃ of grade electric wires of UL1581 standard require to be greater than 8.27MPa for the aging front tensile strength of mechanical property requirements of the thermoplastic elastic material (TPE) of electric wire, elongation at break is greater than 200%, 136 ℃ of both residual rates after aging 168 hours are greater than respectively 75%(UL1581, version in 2008, the 81st page).From the data of table 2, can see, each embodiment all can reach requirement.
After the data results of table 2 is presented at and has added photomask agent and ultraviolet absorbers, the content that increases the elastic content of thermoplastic polyester or reduction polyphenylene oxide can improve weather resistance, but from flame retardant properties, the content of polyphenylene oxide should not be lower than 15%, also can cause the minimizing of elongation at break during the polyphenylene oxide too high levels.
Separating out data from Jiao of Comparative Examples 1 and embodiment material can find out to have added and burntly pentaerythritol stearate (GLYCOLUBE-P) expect that the amount of separating out obviously reduces.
Claims (4)
1. a halogen-free flame-retardant elastomer complex is characterized in that the component of being calculated by following percentage ratio by weight forms:
Polyphenylene oxide resin 15～35%, thermoplastic polyester elastomer 3～30%, compatilizer 15-30%, compound flame retardant 20～35%, softening agent 5～15%, photomask agent 2-5%, processing aid 2-5%, stablizer 0.8～6%;
The mixture that described compound flame retardant is piperazine pyrophosphate and melamine pyrophosphate, wherein piperazine pyrophosphate accounts for 10 ~ 80% of compound flame retardant weight;
Described compatilizer is styrene-ethylene/butylene-styrene block copolymer grafted maleic anhydride or styrene-ethylene/propylene-styrene segmented copolymer grafted maleic anhydride;
Described photomask agent is titanium dioxide;
Described processing aid is pentaerythritol stearate;
Described stablizer is free radical scavenger, metal passivator kind antioxidant, magnesium oxide or ultraviolet absorbers.
2. halogen-free flame-retardant elastomer complex according to claim 1, is characterized in that described polyphenylene oxide resin is the polyphenylene oxide resin of limiting viscosity between 0.3～0.6dl/g of measuring in 25 ℃ of chloroforms.
3. halogen-free flame-retardant elastomer complex according to claim 1, is characterized in that described softening agent is a kind of of dihydroxyphenyl propane two (diphenyl phosphoester), naphthenic oil or both mixtures.
4. the preparation method of the described halogen-free flame-retardant elastomer complex of claim 1, is characterized in that comprising the steps:
First by each component after the high-speed mixer dispersing and mixing, by the twin screw extruder melting, mix, extrude, cooling, dry, pelletizing and packing; Each district's temperature of screw rod should remain between 200～260 ℃, and the length-to-diameter ratio of twin screw extruder is 36～48, and screw speed is 260～500 rev/mins.
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| CN109401254A (en) * | 2018-11-30 | 2019-03-01 | 广东顺德优线三维科技有限公司 | A kind of halogen-free flame-proof polylactic acid material and preparation method thereof for 3D printing |
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| CN1135502A (en) * | 1995-03-17 | 1996-11-13 | 通用电气公司 | Composition containing polyser, poly (arylidene thio-ether), paraplex and compatilizer compound |
| CN1662629A (en) * | 2002-06-24 | 2005-08-31 | 旭电化工业株式会社 | Flame retarder composition and flame retardant resin composition containing the composition |
| CN102101941A (en) * | 2010-12-30 | 2011-06-22 | 金发科技股份有限公司 | Flame-retarding polyphenyl ether composite, and preparation method and use thereof |
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