CN103525015A - High-temperature-resistant PBT (Polybutylene Terephthalate) masterbatch and preparation method thereof - Google Patents
High-temperature-resistant PBT (Polybutylene Terephthalate) masterbatch and preparation method thereof Download PDFInfo
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- CN103525015A CN103525015A CN201210221869.XA CN201210221869A CN103525015A CN 103525015 A CN103525015 A CN 103525015A CN 201210221869 A CN201210221869 A CN 201210221869A CN 103525015 A CN103525015 A CN 103525015A
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- pbt
- high temperature
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- temperature resistant
- screw extruder
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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
- B29C48/03—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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Abstract
The invention discloses a high-temperature-resistant PBT (Polybutylene Terephthalate) masterbatch which comprises the following components by mass percent: 10% to 30% of PBT resin, 20% to 40% of fiberglass, 5% to 10% of PET (Polyethylene Terephthalate), 5% to 10% of acrylic ester, 20% to 35% of fire retardant, 3% to 5% of dispersant, 0.2% to 0.6% of antioxidant and 0.2% to 1.5% of coupling agent. A preparation method comprises the following steps: preparing the components in proportion; drying the PBT resin and feeding the PBT resin from a first-region barrel body of a double-screw extruder; feeding the fiberglass, the acrylic ester, the fire retardant, the dispersant, the antioxidant and the coupling agent together from the fourth-region barrel body of the double-screw extruder through a high-speed mixer; then blending by the double-screw extruder; and extruding and granulating. The PBT masterbatch disclosed by the invention has the beneficial effects that the high-temperature resistance of the PBT masterbatch is enhanced after the PBT masterbatch is blended with the fiberglass and the PET; and the PBT masterbatch has the advantages of high heat stability, good flame retardance, excellent electric insulating property and the like in the case of the addition of the fire retardant.
Description
Technical field
The present invention relates to a kind of PBT master batch and preparation method thereof, specifically high temperature resistant master batch of a kind of PBT and preparation method thereof.
Background technology
Polybutylene terephthalate (PBT) is a kind of crystalline thermoplastic polyester's resin, it not only has good physical and mechanical properties, as high in physical strength, resistance to fatigue and good stability of the dimension, creep is little, ageing-resistant performance is excellent, and its electric property is also very excellent, as its volume specific resistance and dielectric strength is high, arc resistance can be good, under moist hot environment electric performance stablity, so be the main raw of manufacturing electric appliance casing, contactor case.Conventionally, for electric appliance casing, during in particular as contactor case, when electric elements are worked, can produce a large amount of heats, and the resistance to elevated temperatures of common PBT material has certain limitation, during use, will have larger potential safety hazard.Some adopts powder additive to strengthen resistance to elevated temperatures in PBT material, but the impact due to factors such as state of the art, appointed condition or technological process controls, while using the high temperature resistant additive of powdery, there is loaded down with trivial details, dispersed bad, poor with the consistency of matrix resin, the dust pollution of technique, high-temperature resistant result is general and the problem such as variant.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the invention provides high temperature resistant master batch of PBT of a kind of high density, resistance to 750 ℃ of high temperature glow wire tests and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is: PBT is high temperature resistant master batch, its component by mass percent proportioning is: PBT resin 10%～30%, glass fibre 20%～40%, PET5%～10%, acrylate 5%～10%, fire retardant 20%～35%, dispersion agent 3%～5%, oxidation inhibitor 0.2%～0.6%, coupling agent 0.2%～1.5%.
Described glass fibre is alkali free glass fibre.
Described fire retardant is poly-2,6-dibromo phenylene ether.
Described dispersion agent is TAS-2A.
Described oxidation inhibitor is the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Described coupling agent is silane coupling agent or titanate coupling agent.
The preparation method of the high temperature resistant master batch of above-mentioned a kind of PBT is: above-mentioned each component is prepared burden in proportion, PBT resin is entered by twin screw extruder Yi district cylindrical shell after drying, by glass fibre, acrylate, fire retardant, dispersion agent, oxidation inhibitor is entered by twin screw extruder Si district cylindrical shell by high-speed mixer together with coupling agent, after twin screw extruder blend, extrude again, granulation obtains the high temperature resistant master batch of PBT, its technique is: regulating the rotating speed of twin screw extruder is 320～380rpm, controlling twin screw extruder Yi district temperature is 210 ℃～230 ℃, two district's temperature are 235 ℃～245 ℃, three district's temperature are 200 ℃～210 ℃, Si～seven district's temperature are 175 ℃～185 ℃, eight district's temperature are 220 ℃～230 ℃.
The invention has the beneficial effects as follows, by with glass fibre, PET blend, play the effect that strengthens resistance to elevated temperatures, add that fire retardant makes to have that thermostability is high, good flame resistance and electrical insulating property good, adopt dispersion agent also to coordinate coupling agent and acrylate is used, consistency, flame retardant resistance and high thermal resistance are further improved, the adding of oxidation inhibitor, more improve high temperature resistant and flame retardant properties, increase work-ing life simultaneously.
PBT of the present invention is high temperature resistant product test model prepared by master batch, through 750 ℃ of high temperature glow wire tests, test sample plate is not lighted, and its resistance to elevated temperatures is strong, is specially adapted to electric appliance casing, contactor case, can significantly improve its safety performance.
Embodiment
Below in conjunction with specific embodiment, further illustrate technical scheme of the present invention.
Embodiment 1:
A kind of glass strengthens high temperature resistant PBT master batch, its component by mass percent proportioning is: compound 0.5%, the silane coupling agent 0.5% of PBT resin 20%, alkali free glass fibre 30%, PET 8%, acrylate 8%, poly-2,6-dibromo phenylene ether 30%, TAS-2A 3%, hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Preparation method: above-mentioned each component is prepared burden in proportion, then PBT resin is entered by twin screw extruder Yi district cylindrical shell after drying, by alkali free glass fibre, PET, acrylate, poly-2, 6-dibromo phenylene ether, TAS-2A, the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242, silane coupling agent is entered by twin screw extruder Si district cylindrical shell by high-speed mixer together, after twin screw extruder blend, extrude again, granulation obtains the high temperature resistant master batch of PBT, its technique is: regulating the rotating speed of twin screw extruder is 320～380rpm, controlling twin screw extruder Yi district temperature is 210 ℃～230 ℃, two district's temperature are 235 ℃～245 ℃, three district's temperature are 200 ℃～210 ℃, Si～seven district's temperature are 175 ℃～185 ℃, eight district's temperature are 220 ℃～230 ℃.
Embodiment 2:
A kind of glass strengthens high temperature resistant PBT master batch, its component by mass percent proportioning is: PBT resin 10%, alkali free glass fibre 40%, PET 10%, acrylate 10%, compound 0.5%, the titanate coupling agent 1% of poly-2,6-dibromo phenylene ether 24%, TAS-2A 4.5%, hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Preparation method: above-mentioned each component is prepared burden in proportion, then PBT resin is entered by twin screw extruder Yi district cylindrical shell after drying, by PBT resin, alkali free glass fibre, PET, acrylate, poly-2, 6-dibromo phenylene ether, TAS-2A, the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242, titanate coupling agent is entered by twin screw extruder Si district cylindrical shell by high-speed mixer together, after twin screw extruder blend, extrude again, granulation obtains the high temperature resistant master batch of PBT, its technique is: regulating the rotating speed of twin screw extruder is 320～380rpm, controlling twin screw extruder Yi district temperature is 210 ℃～230 ℃, two district's temperature are 235 ℃～245 ℃, three district's temperature are 200 ℃～210 ℃, Si～seven district's temperature are 175 ℃～185 ℃, eight district's temperature are 220 ℃～230 ℃.
Embodiment 3:
A kind of glass strengthens high temperature resistant PBT master batch, its component by mass percent proportioning is: PBT resin 30%, alkali free glass fibre 20%, PET5%, acrylate 5%, compound 0.5%, the silane coupling agent 0.5% of poly-2,6-dibromo phenylene ether 34%, TAS-2A 5%, hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
Preparation method: above-mentioned each component is prepared burden in proportion, then PBT resin is entered by twin screw extruder Yi district cylindrical shell after drying, by PBT resin, alkali free glass fibre, PET, acrylate, poly-2, 6-dibromo phenylene ether, TAS-2A, the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242, silane coupling agent is entered by twin screw extruder Si district cylindrical shell by high-speed mixer together, after twin screw extruder blend, extrude again, granulation obtains the high temperature resistant master batch of PBT, its technique is: regulating the rotating speed of twin screw extruder is 320～380rpm, controlling twin screw extruder Yi district temperature is 210 ℃～230 ℃, two district's temperature are 235 ℃～245 ℃, three district's temperature are 200 ℃～210 ℃, Si～seven district's temperature are 175 ℃～185 ℃, eight district's temperature are 220 ℃～230 ℃.
Claims (7)
1. the high temperature resistant master batch of PBT, it is characterized in that, its component by mass percent proportioning is: PBT resin 10%～30%, glass fibre 20%～40%, PET5%～10%, acrylate 5%～10%, fire retardant 20%～35%, dispersion agent 3%～5%, oxidation inhibitor 0.2%～0.6%, coupling agent 0.2%～1.5%.
2. the high temperature resistant master batch of PBT according to claim 1, is characterized in that, described glass fibre is alkali free glass fibre.
3. the high temperature resistant master batch of PBT according to claim 1, is characterized in that, described fire retardant is poly-2,6-dibromo phenylene ether.
4. the high temperature resistant master batch of PBT according to claim 1, is characterized in that, described dispersion agent is TAS-2A.
5. the high temperature resistant master batch of PBT according to claim 1, is characterized in that, described oxidation inhibitor is the compound of hindered phenol antioxygen KY-1076 and phosphite antioxidant JC-242.
6. the high temperature resistant master batch of PBT according to claim 1, is characterized in that, described coupling agent is silane coupling agent or titanate coupling agent.
7. the preparation method of the high temperature resistant master batch of PBT according to claim 1, it is characterized in that, comprise the following steps: according to each component described in claim 1～6, prepare burden in proportion, PBT resin is entered by twin screw extruder Yi district cylindrical shell after drying, glass fibre, acrylate, fire retardant, dispersion agent, oxidation inhibitor are entered by twin screw extruder Si district cylindrical shell by high-speed mixer together with coupling agent, then after twin screw extruder blend, extrude, granulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210221869.XA CN103525015A (en) | 2012-07-01 | 2012-07-01 | High-temperature-resistant PBT (Polybutylene Terephthalate) masterbatch and preparation method thereof |
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| CN201210221869.XA CN103525015A (en) | 2012-07-01 | 2012-07-01 | High-temperature-resistant PBT (Polybutylene Terephthalate) masterbatch and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140652A (en) * | 2014-07-17 | 2014-11-12 | 滁州优胜高分子材料有限公司 | Nanometer environmentally friendly pbt material |
| CN104140651A (en) * | 2014-07-17 | 2014-11-12 | 滁州优胜高分子材料有限公司 | High-temperature-resistant pbt material |
-
2012
- 2012-07-01 CN CN201210221869.XA patent/CN103525015A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140652A (en) * | 2014-07-17 | 2014-11-12 | 滁州优胜高分子材料有限公司 | Nanometer environmentally friendly pbt material |
| CN104140651A (en) * | 2014-07-17 | 2014-11-12 | 滁州优胜高分子材料有限公司 | High-temperature-resistant pbt material |
| CN104140651B (en) * | 2014-07-17 | 2016-08-24 | 滁州优胜高分子材料有限公司 | A kind of high temperature resistant pbt material |
| CN104140652B (en) * | 2014-07-17 | 2016-08-24 | 滁州优胜高分子材料有限公司 | A kind of nano environmental protection pbt material |
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Application publication date: 20140122 |