CN102850733A - Polybutylene terephthalate composition and its preparation method - Google Patents
Polybutylene terephthalate composition and its preparation method Download PDFInfo
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- CN102850733A CN102850733A CN201110179513XA CN201110179513A CN102850733A CN 102850733 A CN102850733 A CN 102850733A CN 201110179513X A CN201110179513X A CN 201110179513XA CN 201110179513 A CN201110179513 A CN 201110179513A CN 102850733 A CN102850733 A CN 102850733A
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- polybutylene terephthalate
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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
Abstract
The invention discloses a polybutylene terephthalate composition and its preparation method, falling into the polymer composite field. The composition includes polybutylene terephthalate 70-80, brominated epoxy resin 12-15, flame retardant synergist 5-10, anti-dripping modifier 0.1-0.5, plasticizer 1-8, and processing aid 0.5-1 weight parts. The preparation method includes adding dry polybutylene terephthalate 70-80, brominated epoxy resin 12-15, flame retardant synergist 5-10, anti-dripping modifier 0.1-0.5, plasticizer 1-8, and processing aid 0.5-1 weight parts in a high-speed mixer, and stirring for 3-5 min; adding the uniformly-mixed material in a feed inlet of a double screw extruder; and performing melt extrusion on the material via the double screw extruder, and granulating to obtain the polybutylene terephthalate composition. The inventive composition has low cost, balanced mechanical property, and good flowability.
Description
Technical field
The invention belongs to the polymer composite field, relate to a kind of polybutylene terephthalate composition and method of making the same.
Background technology
Polybutylene terephthalate has good mechanical property, though under hot conditions also changes little, it is minimum in engineering plastics to produce energy consumption; Ageing resistance is outstanding; Organic solvent resistance is good; Electrical property is good; Water absorbability is little; Have good over-all properties, and good forming process and excellent cost performance, make it in engineering plastics, become industrialization the latest but a kind with fastest developing speed.
The polybutylene terephthalate resin shortcoming is that the flame retardant resistance of resin own is bad, when in resin, adding filler or other strongtheners, flame-retardant modified fairly simple, be easy to reach V-0 or 5VA rank, but in packless situation, material combustion very easily drips, the absorbent cotton that ignites, thus affect the fire-retardant rank of material.
Polybutylene terephthalate resin is mainly used in making the component of electronic apparatus, automobile, mechanical means and precision instrument.Along with plastic applications is more and more extensive, also more and more stricter to the requirement of material, in some high-end products, safety in utilization to material has proposed very high requirement, fire retardant material not only duration of fire resistance need to meet the demands, and also need avoid as much as possible drippage, in order to avoid cause other fire.
Summary of the invention
The purpose of this invention is to provide a kind of polybutylene terephthalate composition.
Another object of the present invention provides a kind of preparation method of above-mentioned polybutylene terephthalate composition.
Technical scheme of the present invention is as follows:
The invention provides a kind of polybutylene terephthalate composition, said composition comprises following component and weight part:
Polybutylene terephthalate 70-80 part,
Brominated epoxy resin 12-15 part,
Fire retarding synergist 5-10 part,
Anti-drippage properties-correcting agent 0.1-0.5 part,
Toughner 1-8 part,
Processing aid v 0.5-1 part.
Described brominated epoxy resin molecular weight is between 20000-30000.
Described fire retarding synergist is antimonous oxide and the complex composition that contains phosphorus type flame retardant; Wherein, containing phosphorus type flame retardant is crystal type polyphosphoric acid salt based flame retardant, is specially the polymerization degree greater than 1000 polyphosphoric acid derivative flame retardant, and Main Function is to replace antimonous oxide, reducing cost, can be the RH-03W101 of auspicious great chemical materials company limited.
The special modified Teflon (PTFE A3800) that described anti-drippage properties-correcting agent is high molecular; Wherein, it can be the PTFE A3800 of Mitsubishi through acrylate coating or vinyl cyanide or styrene-acrylonitrile copolymer modification that special modified Teflon refers to.
Described toughner is selected from one or more in maleic anhydride grafted ethene-octene copolymer, ethylene-methyl acrylate copolymer or the ethylene-methyl acrylate-glyceryl methacrylate.
Described processing aid is selected from lubricant or oxidation inhibitor, and wherein, lubricant is selected from one or more in pentaerythritol stearate class, fatty acid amide, metallic soap of stearic acid class, fatty bisamide wax class, polyethylene wax class or the brown coal cerinic acid second diester ester class; Further be selected from the beautiful wax E of section, pentaerythritol stearate (PETS) or ethylene bis stearamide (EBS); Oxidation inhibitor is selected from one or more in Hinered phenols antioxidant or the phosphite ester kind antioxidant, further is selected from antioxidant 1010 or the irgasfos 168 one or both.
The present invention also provides a kind of preparation method of above-mentioned polybutylene terephthalate composition, and the method may further comprise the steps:
With the polybutylene terephthalate of dry 70-80 part, the brominated epoxy resin of 12-15 part, the fire retarding synergist of 5-10 part, the anti-drippage properties-correcting agent of 0.1-0.5 part, the toughner of 1-8 part and the processing aid of 0.5-1 part, add in the high-speed mixer, in high-speed mixer, stir 3-5min; Then the charging opening that the material that mixes is added twin screw extruder; Material melt extrudes through twin screw extruder, and granulation prepares the polybutylene terephthalate composition.
The polybutylene terephthalate of described drying is to be 110-120 ℃ in temperature, dry 3-4h.
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.
Polybutylene terephthalate itself and fire retardant affinity are good, are easy to fire-retardantly, but in packless situation, bromo-antimony flame-retardant system is easy to the drippage absorbent cotton that ignites, thereby is difficult to reach the rank of 5VA.The present invention adds anti-drippage properties-correcting agent simultaneously by adding the fire-retardant synergistic flame retardant of phosphoric acid salt, has improved without the drippage of filling polybutylene terephthalate, and the fire-retardant rank of material has reached the 5VA level, and material has balanced mechanical property simultaneously.
The present invention compares with prior art, has following advantage and beneficial effect:
1, the present invention has adopted and added phosphoric acid salt synergist and anti-drippage properties-correcting agent in without filling, the fire-retardant polybutylene terephthalate composition of bromo-antimony, and the fire-retardant rank of the composition that makes can reach the 5VA level.
2, the fire-retardant polybutylene terephthalate composition that makes of the present invention has lower cost.
3, the fire-retardant polybutylene terephthalate composition that makes of the present invention has balanced mechanical property.
4, present composition flowability is fine, can be used for the larger product of injection moulding.
5, the product surface gloss of present composition injection moulding is fine.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
The measuring mechanical property method:
Composition of the present invention adopts the injection moulding of ASTM standard, and test sample uses injection molding machine of plastic 220-250 ℃ of lower injection moulding.Batten size (length x width x thickness) is respectively: tensile bars (dumbbell shape), 170mm * 13mm * 3.2mm; Crooked batten, 127mm * 13mm * 3.2mm; Non-notch impacts batten, 127mm * 13mm * 3.2mm; The notch shock batten, 127mm * 13mm * 3.2mm, v-notch, notch depth are 1/5.
Tensile strength and elongation at break: press ASTM D638 test, draw speed is 5mm/min.
Flexural strength and modulus in flexure: press ASTM D790 test, rate of bending is 1.25mm/min.
Simply supported beam notched Izod impact strength: press ASTM D6110 test.
Flame retardant resistance: press the UL94 test.
Melting index: press ASTM D1238 test, probe temperature is 235 ℃, exerts pressure to be 2.16KG.
Test after placing 16h in the standard environment of (50 ± 5) % for (23 ± 2) ℃, humidity in temperature after the sample moulding, test environment is that (23 ± 2) ℃, humidity are (50 ± 5) %.
Embodiment 1
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 78 parts of dry polybutylene terephthalates, 13.5 parts of brominated epoxy resin KBE-2025K, 2.5 parts of antimonous oxides, 3 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,3 parts of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.5 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.3 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 1.
Embodiment 2
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 77.5 parts of dry polybutylene terephthalates, 14 parts of brominated epoxy resin KBE-2025K, 2.5 parts of antimonous oxides, 3 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,3 parts of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.5 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 1.
Embodiment 3
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 76.5 parts of dry polybutylene terephthalates, 15 parts of brominated epoxy resin KBE-2025K, 2.5 parts of antimonous oxides, 3 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,3 parts of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.3 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 1.
Embodiment 4
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 75.5 parts of dry polybutylene terephthalates, 14 parts of brominated epoxy resin KBE-2025K, 2 parts of antimonous oxides, 3.5 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,5 parts of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.5 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 1.
Table 1
| Performance | Testing method | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Flexural strength | ASTM D790 | MPa | 92.6 | 91.7 | 92.3 | 89.3 |
| Modulus in flexure | ASTM D790 | MPa | 2300 | 2187 | 2307 | 2233 |
| Tensile strength | ASTM D638 | MPa | 57.3 | 56.9 | 49.7 | 48.9 |
| Elongation at break | ASTM D638 | ％ | 16 | 17.1 | 17.1 | 16.4 |
| The simply supported beam notch shock | ASTM D256 | KJ/m2 | 9 | 8.2 | 7 | 11 |
| 250 ℃ on molten finger, 2.16KG | ASTM D1238 | g/10min | 39 | 37 | 37 | 33 |
| UL94 | The 5V method | 5VA | 5VA | 5VA | 5VA |
Embodiment 5
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 80 parts of dry polybutylene terephthalates, 14 parts of brominated epoxy resin KBE-2025K, 3 parts of antimonous oxides, 2 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,1 part of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.5 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 2.
Embodiment 6
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 70 parts of dry polybutylene terephthalates, 15 parts of brominated epoxy resin KBE-2025K, 3 parts of antimonous oxides, 4 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,8 parts of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.1 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 2.
Embodiment 7
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 70 parts of dry polybutylene terephthalates, 12 parts of brominated epoxy resin KBE-2025K, 5 parts of antimonous oxides, 5 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,8 parts of toughner ethylene-methyl acrylate-glyceryl methacrylate AX8900,0.1 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 2.
Embodiment 8
(1) with polybutylene terephthalate under 110-120 ℃, dry 3-4h;
(2) take by weighing 77.5 parts of dry polybutylene terephthalates, 14 parts of brominated epoxy resin KBE-2025K, 2.5 parts of antimonous oxides, 3 parts of polyphosphoric acid salt synergistic flame retardant RH03W101,3 parts of toughening agent maleic anhydride grafting ethylene-octene copolymers (POE-g-MAH), 0.5 part of the special modified Teflon PTFE A3800 of anti-dripping agent high molecular, antioxidant 1010/168 (1: 1) 0.4 part, 0.5 part of the wax E of the beautiful section of lubricant;
(3) material that weighs up in the above-mentioned steps (2) is stirred 3-5min in high-speed mixer;
(4) then the above-mentioned material that mixes is added the charging opening of twin screw extruder;
(5) material melt extrudes through twin screw extruder, granulation;
The complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.The performance test results sees Table 2.
Table 2
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (10)
1. polybutylene terephthalate composition, it is characterized in that: said composition comprises following component and weight part,
Polybutylene terephthalate 70-80 part,
Brominated epoxy resin 12-15 part,
Fire retarding synergist 5-10 part,
Anti-drippage properties-correcting agent 0.1-0.5 part,
Toughner 1-8 part,
Processing aid 0.5-1 part.
2. polybutylene terephthalate composition according to claim 1, it is characterized in that: described brominated epoxy resin molecular weight is between 20000-30000.
3. polybutylene terephthalate composition according to claim 1 is characterized in that: described fire retarding synergist is antimonous oxide and the complex composition that contains phosphorus type flame retardant; Wherein, containing phosphorus type flame retardant is crystal type polyphosphoric acid salt based flame retardant.
4. polybutylene terephthalate composition according to claim 1, it is characterized in that: described anti-drippage properties-correcting agent is the special modified Teflon of high molecular; Wherein, special modified Teflon refers to through acrylate coating or vinyl cyanide or styrene-acrylonitrile copolymer modification.
5. polybutylene terephthalate composition according to claim 1, it is characterized in that: described toughner is selected from one or more in maleic anhydride grafted ethene-octene copolymer, ethylene-methyl acrylate copolymer or the ethylene-methyl acrylate-glyceryl methacrylate.
6. polybutylene terephthalate composition according to claim 1, it is characterized in that: described processing aid is selected from lubricant or oxidation inhibitor, wherein, lubricant is selected from one or more in pentaerythritol stearate class, fatty acid amide, metallic soap of stearic acid class, fatty bisamide wax class, polyethylene wax class or the brown coal cerinic acid second diester ester class; Oxidation inhibitor is selected from one or more in Hinered phenols antioxidant or the phosphite ester kind antioxidant.
7. polybutylene terephthalate composition according to claim 6, it is characterized in that: described lubricant is selected from the beautiful wax E of section, pentaerythritol stearate or ethylene bis stearamide; Described oxidation inhibitor is selected from one or both in antioxidant 1010 or the irgasfos 168.
8. the preparation method of the arbitrary described polybutylene terephthalate composition of claim 1 to 7, it is characterized in that: the method may further comprise the steps:
Polybutylene terephthalate, the brominated epoxy resin of 12-15 part, the fire retarding synergist of 5-10 part, the anti-drippage properties-correcting agent of 0.1-0.5 part, the toughner of 1-8 part and the processing aid of 0.5-1 part with 70-80 part of drying, add in the high-speed mixer, in high-speed mixer, stir 3-5min; Then the charging opening that the material that mixes is added twin screw extruder; Material melt extrudes through twin screw extruder, and granulation prepares the polybutylene terephthalate composition.
9. the preparation method of polybutylene terephthalate composition according to claim 8 is characterized in that: the polybutylene terephthalate of described drying is to be 110-120 ℃ in temperature, dry 3-4h.
10. the preparation method of polybutylene terephthalate composition according to claim 8, it is characterized in that: the complete processing of described twin screw extruder is: twin screw extruder one district temperature 180-220 ℃, two district temperature 200-240 ℃, three district temperature 220-250 ℃, four district temperature 220-240 ℃, five district temperature 220-240 ℃, six district temperature 220-240 ℃, head temperature 220-250 ℃, engine speed is 15-35HZ.
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| CN105504702A (en) * | 2015-12-24 | 2016-04-20 | 广东思汗新材料有限公司 | Flame-retardant electric conducting PBT composite material |
| CN107177174A (en) * | 2017-06-20 | 2017-09-19 | 新昌县博远新材料有限公司 | A kind of resistance to gasoline cleans the preparation of PBT material |
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| CN105504702A (en) * | 2015-12-24 | 2016-04-20 | 广东思汗新材料有限公司 | Flame-retardant electric conducting PBT composite material |
| CN107177174A (en) * | 2017-06-20 | 2017-09-19 | 新昌县博远新材料有限公司 | A kind of resistance to gasoline cleans the preparation of PBT material |
| CN107177174B (en) * | 2017-06-20 | 2019-05-28 | 新昌县博远新材料有限公司 | A kind of resistance to gasoline cleans the preparation of PBT material |
| CN108102309A (en) * | 2017-12-21 | 2018-06-01 | 安徽悦尔伟塑料机械有限公司 | Automotive compounded instrument panel shell and preparation method thereof |
| GB2574730A (en) * | 2018-06-15 | 2019-12-18 | Hexcel Composites Ltd | Epoxy resin formulations |
| GB2574730B (en) * | 2018-06-15 | 2022-10-19 | Hexcel Composites Ltd | Epoxy resin formulations |
| CN110028766A (en) * | 2019-03-25 | 2019-07-19 | 广东顺德顺炎新材料股份有限公司 | It is a kind of fire-retardant not drip modified PBT material and preparation method thereof without fine |
| CN110016209A (en) * | 2019-04-16 | 2019-07-16 | 武汉顺威赛特工程塑料有限公司 | A kind of GWIT850 DEG C of enhancing flame-retardant PBT and its preparation method and application |
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|---|---|
| CN102850733B (en) | 2015-05-20 |
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