CN103951949A - Glass fiber enhanced toughening balanced type PET composition and preparation method thereof - Google Patents
Glass fiber enhanced toughening balanced type PET composition and preparation method thereof Download PDFInfo
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- CN103951949A CN103951949A CN201410131816.8A CN201410131816A CN103951949A CN 103951949 A CN103951949 A CN 103951949A CN 201410131816 A CN201410131816 A CN 201410131816A CN 103951949 A CN103951949 A CN 103951949A
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Abstract
The invention provides a glass fiber enhanced toughening balanced type PET composition and a preparation method, and the PET composition is prepared by 100 parts of polyethylene glycol terephthalate, 4-8 parts of toughening compatilizer, 20-100 parts of glass fiber, 1-5 parts of nucleating agent, 0.1-0.5 parts of anti-oxidant, 0.1-0.5 parts of lubrication modifier and 0.1-0.2 parts of silane coupling agent. The PET composition has excellent mechanical property and processing formability; the nucleating agent promotes PET crystallization and nucleation, increases the strength and rigidity of the material, and ensures that the PET has enough modulus, flexibilizer enhances the compatibility of the nucleating agent and resin matrix, so that the material system enables uniform dispersion, each component can perform synergism, the material has good shock resistance due to the provided system toughness, so that the PET composition can be taken as engineering plastics with good toughening balance performance.
Description
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Technical field
The invention belongs to engineering plastics field, relate to a kind of glass and strengthen rigid balancing type PET composition and method of making the same.
Background technology
Polyethylene terephthalate (be called for short PET) is the material that a kind of performance is very excellent, because it has good mechanical property, and good tint permanence, chemical resistance etc., in spinning and film packaging industry, there is application very widely.As engineering plastics aspect, the consumption of PET engineering plastics is less, and main application fields is electric, mechanical, automobile, light industry and building materials industry.Although PET has very large advantage in tensile strength, flexural strength and modulus in flexure, but because PET is the poor engineering plastics of a kind of strength and toughness, not toughness reinforcing in the situation that, the notched Izod impact strength of its simply supported beam and socle girder is very low, and its numerical value is generally at 3 ~ 5KJ/M
2even lower, impact resistance is very poor.Therefore improve its impact resistance, balance rigidity and toughness become a kind of obdurability engineering plastics and are significant.
Summary of the invention
The object of the invention is to provide a kind of glass and strengthens rigidity-toughness balanced type PET composition and method of making the same, and the method is carried out toughening modifying to PET, can make glass and strengthen rigidity-toughness balanced type PET engineering plastics.
For achieving the above object, the present invention is by the following technical solutions:
Glass strengthens a rigidity-toughness balanced type PET composition, by following component, is prepared from by weight:
100 parts of polyethylene terephthalates (PET),
Toughness reinforcing compatilizer 4-8 part,
Glass fibre 20-100 part,
Nucleator 1-5 part,
Oxidation inhibitor 0.1-0.5 part,
Lubricating modification agent 0.1-0.5 part,
Silane coupling agent 0.1-0.2 part.
The intrinsic viscosity of described PET is 0.65-0.82dl/g.
Described toughness reinforcing compatilizer is selected from least one in acrylic polymer, styrene butadiene thermoplasticelastomer class, methyl methacrylate-divinyl-styrene copolymer.
Described glass fibre is surface treated glass fibre, as existing product 998A continuous glass-fiber or HP3782 short glass fiber.
Described nucleator is the amorphous powder of surface organic processing and the composite organic system of small molecules polymkeric substance of grafting, nucleator ADD301 as special-purpose in existing PET.
Described oxidation inhibitor is alkyl Polyphenols oxidation inhibitor.
Described alkyl Polyphenols oxidation inhibitor is that four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010) and three ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester (irgasfos 168) is by weight the composite compound antioxidant forming of 1:1.
Described lubricating modification agent is silicone powder, tetramethylolmethane stearic acid (PETS) or ethylene bis stearamide (EBS).
Described silane coupling agent is γ-aminopropyl triethoxysilane (KH550).
Another object of the present invention is to provide the preparation method that a kind of glass strengthens rigidity-toughness balanced type PET composition, comprises the following steps:
(1) raw material mixes
Polyethylene terephthalate is placed in after 80-120 ℃ of baking oven oven dry, by said ratio, 100 parts of PET, toughness reinforcing compatilizer 4-8 part, nucleator 1-5 part, oxidation inhibitor 0.1-0.5 part, lubricating modification agent 0.1-0.5 part and coupling agent 0.1-0.2 part are joined in high mixer, continuous high speed stirs and mixes for 4 ~ 6 minutes at normal temperatures;
(2) extruding pelletization
The raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, and the entrance at twin screw extruder is involved in glass fibre 20-100 part simultaneously, melt extrudes granulation; Obtain glass of the present invention and strengthen rigidity-toughness balanced type PET composition; Wherein forcing machine from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 ℃, 250 ~ 260 ℃, 250 ~ 260 ℃, 245 ~ 255 ℃, 245 ~ 255 ℃, 240 ~ 250 ℃, 240 ~ 250 ℃, 250 ~ 260 ℃, 250 ~ 260 ℃, 255 ~ 265 ℃, head temperature is 260 ~ 270 ℃; Screw speed is 250 ~ 300r/min.
The present invention has following beneficial effect:
1, to select intrinsic viscosity be the polyethylene terephthalate of 0.65-0.82dl/g in the present invention, it is fast that this range of viscosities has crystallization rate, the feature of good processability, is used this range of viscosities PET can make composition of the present invention have good mechanical property and machine-shaping property.
2, in the present invention, nucleator plays the effect that promotes PET crystallization nucleation, and the degree of crystallinity of PET is increased, thereby improves the strength and stiffness of material, guarantees that PET has enough modulus.
3, the toughner in the present invention plays a part compatible and toughness reinforcing, strengthen the consistency between nucleator and resin matrix, and material system is uniformly dispersed, each composition can be brought into play synergy, the toughness of system is provided simultaneously, make material there is good shock resistance, become the good engineering plastics of a kind of rigid-tough balance.
4, the present invention has formula simply, and simple process is easily gone, and machine-shaping property is good, the easy demoulding of goods, apparent good feature.
Embodiment
Below in conjunction with specific embodiment, Method and process involved in the present invention is described, the following example only, for operating process of the present invention and formula are described, does not limit protection scope of the present invention.
In embodiment, polyethylene terephthalate is selected the PET resin of intrinsic viscosity 0.65 ~ 0.82dl/g below;
Described toughness reinforcing compatilizer is a kind of in acrylic polymer (ACR), styrene butadiene thermoplasticelastomer analog copolymer (SBS) and methyl methacrylate-divinyl-styrene copolymer (MBS);
Compound antioxidant is that antioxygen 1010 and antioxygen 168 form so that weight ratio 1:1 is composite;
Described glass fibre is the glass trade mark 988A that megalith group produces;
Nucleator is the special-purpose nucleator of the PET of commercially available trade mark ADD301;
Lubricating modification agent silicone powder is that Yuyao Kai Mulihua plastic cement Science and Technology Ltd. sells SK20R silicone powder, or tetramethylolmethane stearic acid, ethylene bis stearamide.
Silane coupling agent is commercially available KH550.
The forcing machine using in embodiment below for Nanjing Rhea not this extra-high-speed polymers equipment company limited produce the parallel dual-screw extruding machine of model TSE-35A, this extruder screw nominal screw rod 35mm, length-to-diameter ratio 44, forcing machine from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 ℃, 250 ~ 260 ℃, 250 ~ 260 ℃, 245 ~ 255 ℃, 245 ~ 255 ℃, 240 ~ 250 ℃, 240 ~ 250 ℃, 250 ~ 260 ℃, 250 ~ 260 ℃, 255 ~ 265 ℃, head temperature is 260 ~ 270 ℃; Screw speed is 250 ~ 300r/min.
PET composition particle is injection molded into the manufacture model C J80M2V of the injection moulding machine Wei Zhende plastics machinery Co., Ltd., Factory plastic-injection moulding machine that ASTM standard batten adopts, Shooting Technique is 245 ~ 250 ℃ of one section of temperature, injection speed 50 ~ 99%, 250 ~ 255 ℃ of pressure 99 ~ 88%, two sections of temperature, injection speed 45 ~ 88%, pressure 88 ~ 77%, three sections of 245 ~ 250 ℃ of temperature, injection speed 40 ~ 77%, pressure 77 ~ 66%, pressurize for some time 6 ~ 8S, pressure 40 ~ 50%, two sections of time 4 ~ 6S of pressurize, pressure 50 ~ 60%; Cooling time 6 ~ 8S, 90 ~ 120 ℃ of die temperatures.
Embodiment 1
(1) polyethylene terephthalate that is 0.65 by intrinsic viscosity (PET) is placed in after 100 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 4 parts of ACR, 1 part of ADD301,0.1 part of compound antioxidant, 0.5 part, SK20R silicone powder, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 4 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 20 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 100 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 2
(1) polyethylene terephthalate that is 0.75 by intrinsic viscosity (PET) is placed in after 120 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 6 parts of SBS, 3 parts of ADD301,0.2 part of compound antioxidant, 0.2 part, SK20R silicone powder, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 5 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 20 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 120 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 3
(1) polyethylene terephthalate that is 0.82 by intrinsic viscosity (PET) is placed in after 80 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 8 parts of MBS, 5 parts of ADD301,0.5 part of compound antioxidant, 0.1 part, SK20R silicone powder, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 6 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 30 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 80 ℃, dry 10 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 4
(1) polyethylene terephthalate that is 0.65 by intrinsic viscosity (PET) is placed in after 90 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 8 parts of MBS, 1 part of ADD301,0.1 part of compound antioxidant, 0.3 part, SK20R silicone powder, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 4 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 50 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 90 ℃, dry 8 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 5
(1) polyethylene terephthalate that is 0.75 by intrinsic viscosity (PET) is placed in after 110 ℃ of baking ovens oven dry, 0.2 part of 100 parts of polyester PET, 6 parts of SBS, 3 parts of ADD301,0.2 part of compound antioxidant, 0.2 part of PETS, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 5 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 100 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 110 ℃, dry 9 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 6
(1) polyethylene terephthalate that is 0.82 by intrinsic viscosity (PET) is placed in after 120 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 4 parts of ACR, 1 part of ADD301,0.1 part of compound antioxidant, 0.3 part of EMS, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 6 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 50 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 120 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 7
(1) polyethylene terephthalate that is 0.65 by intrinsic viscosity (PET) is placed in after 100 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 6 parts of MBS, 1 part of ADD301,0.1 part of compound antioxidant, 0.3 part, SK20R silicone powder, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 4 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 100 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 100 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 8
(1) polyethylene terephthalate that is 0.75 by intrinsic viscosity (PET) is placed in after 80 ℃ of baking ovens oven dry, 0.2 part of 100 parts of polyester PET, 4 parts of ACR, 3 parts of ADD301,0.3 part of compound antioxidant, 0.2 part of PETS, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 5 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 30 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 80 ℃, dry 10 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Embodiment 9
(1) polyethylene terephthalate that is 0.82 by intrinsic viscosity (PET) is placed in after 100 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 4 parts of MBS, 5 parts of ADD301,0.5 part of compound antioxidant, 0.1 part of EBS, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 6 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, add entrance add 50 parts of continuous glass-fiber 988A at glass, extruding pelletization obtains glass of the present invention and strengthens rigidity-toughness balanced type PET composition particle simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 100 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Comparative example 1
(1) polyethylene terephthalate that is 0.65 by intrinsic viscosity (PET) is placed in after 100 ℃ of baking ovens oven dry, 0.1 part of 100 parts of polyester PET, 1 part of ADD301,0.1 part of compound antioxidant, 0.3 part, SK20R silicone powder, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 4 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, at glass, add entrance and add 100 parts of continuous glass-fiber 988A, according to above-mentioned expressing technique extruding pelletization simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 100 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Comparative example 2
(1) polyethylene terephthalate that is 0.75 by intrinsic viscosity (PET) is placed in after 100 ℃ of baking ovens oven dry, 0.2 part of 100 parts of polyester PET, 3 parts of ADD301,0.2 part of compound antioxidant, 0.3 part of PETS, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 5 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, at glass, add entrance and add 30 parts of continuous glass-fiber 988A, according to above-mentioned expressing technique extruding pelletization simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 100 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Comparative example 3
(1) polyethylene terephthalate that is 0.82 by intrinsic viscosity (PET) is placed in after 100 ℃ of baking ovens oven dry, 0.2 part of 100 parts of polyester PET, 5 parts of ADD301,0.5 part of compound antioxidant, 0.1 part of EBS, KH550 is pressed after formula metering, join in high mixer, continuous high speed stirs 6 minutes at normal temperatures, the raw mixture that obtains mixing.
(2) then the raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, at glass, add entrance and add 50 parts of continuous glass-fiber 988A, according to above-mentioned expressing technique extruding pelletization simultaneously.
(3) by obtaining pellet in step (2), in the baking oven of 100 ℃, dry 6 hours, be then injection molded into ASTM standard batten.This standard batten is carried out to Mechanics Performance Testing, and its testing standard and performance data are in Table 1.
Table 1
| ? | Tensile strength/Mpa | Flexural strength/Mpa | Modulus in flexure/Mpa | Simply supported beam notched Izod impact strength/KJ/m 2 |
| Testing standard | ASTM | ASTM | ASTM | ASTM |
| Embodiment 1 | 95.7 | 118.6 | 3843 | 9.1 |
| Embodiment 2 | 94.4 | 112.3 | 3655 | 13.2 |
| Embodiment 3 | 108.8 | 155.9 | 4687 | 19.7 |
| Embodiment 4 | 125.2 | 189.4 | 8268 | 20.6 |
| Embodiment 5 | 153.9 | 227.5 | 11984 | 15.5 |
| Embodiment 6 | 120 | 183.1 | 8322 | 8.8 |
| Embodiment 7 | 156.3 | 237.2 | 11808 | 12.6 |
| Embodiment 8 | 105.9 | 158.7 | 4829 | 10.3 |
| Embodiment 9 | 118.6 | 179.6 | 8557 | 20.4 |
| Comparative example 1 | 152.3 | 222.9 | 12046 | 5.2 |
| Comparative example 2 | 109.5 | 160.3 | 4942 | 4.5 |
| Comparative example 3 | 117.2 | 191.6 | 7913 | 4.8 |
By table 1 test data, contrasting, can find out in the present invention owing to having added toughness reinforcing compatilizer, make material possess good shock resistance in the situation that guaranteeing enough modulus, is the good engineering plastics of a kind of rigid-tough balance.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiment, and General Principle described herein is applied in other embodiment and needn't passes through performing creative labour.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 departing 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. glass strengthens a rigidity-toughness balanced type PET composition, it is characterized in that: by following component, be prepared from by weight:
100 parts of polyethylene terephthalates,
Toughness reinforcing compatilizer 4-8 part,
Glass fibre 20-100 part,
Nucleator 1-5 part,
Oxidation inhibitor 0.1-0.5 part,
Lubricating modification agent 0.1-0.5 part,
Silane coupling agent 0.1-0.2 part.
2. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: the intrinsic viscosity of described polyethylene terephthalate is 0.65-0.82dl/g.
3. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described toughness reinforcing compatilizer is selected from least one in acrylic polymer, styrene butadiene thermoplasticelastomer class, methyl methacrylate-divinyl-styrene copolymer.
4. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described glass fibre is surface treated glass fibre.
5. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described nucleator is the amorphous powder of surface organic processing and the composite organic system of small molecules polymkeric substance of grafting.
6. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described oxidation inhibitor is alkyl Polyphenols oxidation inhibitor.
7. a kind of glass according to claim 6 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described alkyl Polyphenols oxidation inhibitor is that four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and three ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester is by weight the composite compound antioxidant forming of 1:1.
8. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described lubricating modification agent is silicone powder, tetramethylolmethane stearic acid or ethylene bis stearamide.
9. a kind of glass according to claim 1 strengthens rigidity-toughness balanced type PET composition, it is characterized in that: described silane coupling agent is γ-aminopropyl triethoxysilane.
10. glass as claimed in claim 1 strengthens a preparation method for rigidity-toughness balanced type PET composition, it is characterized in that: comprise the following steps:
(1) raw material mixes
Polyethylene terephthalate is placed in after 80-120 ℃ of baking oven oven dry, by said ratio, 100 parts of polyethylene terephthalates, toughness reinforcing compatilizer 4-8 part, nucleator 1-5 part, oxidation inhibitor 0.1-0.5 part, lubricating modification agent 0.1-0.5 part and coupling agent 0.1-0.2 part are joined in high mixer, continuous high speed stirs and mixes for 4 ~ 6 minutes at normal temperatures;
(2) extruding pelletization
The raw mixture obtaining in step (1) is joined in the hopper of twin screw extruder, and the entrance at twin screw extruder is involved in glass fibre 20-100 part simultaneously, melt extrudes granulation; Obtain glass of the present invention and strengthen rigidity-toughness balanced type polyethylene terephthalate composition; Wherein forcing machine from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 ℃, 250 ~ 260 ℃, 250 ~ 260 ℃, 245 ~ 255 ℃, 245 ~ 255 ℃, 240 ~ 250 ℃, 240 ~ 250 ℃, 250 ~ 260 ℃, 250 ~ 260 ℃, 255 ~ 265 ℃, head temperature is 260 ~ 270 ℃; Screw speed is 250 ~ 300r/min.
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| CN109867919A (en) * | 2017-12-04 | 2019-06-11 | 广州汽车集团股份有限公司 | Polyethylene terephthalate composite material, product and preparation method |
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| CN104845288B (en) * | 2015-04-30 | 2017-04-12 | 广东锦湖日丽高分子材料有限公司 | High-toughness glass fiber reinforced polymer alloy and preparation method thereof |
| CN106280294A (en) * | 2015-06-11 | 2017-01-04 | 合肥杰事杰新材料股份有限公司 | A kind of fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof |
| CN106280294B (en) * | 2015-06-11 | 2019-05-14 | 合肥杰事杰新材料股份有限公司 | A kind of fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof |
| CN106810828A (en) * | 2015-11-30 | 2017-06-09 | 合肥杰事杰新材料股份有限公司 | A kind of fiberglass reinforced PET composition and preparation method thereof |
| CN106117995A (en) * | 2016-07-29 | 2016-11-16 | 广东壹豪新材料科技股份有限公司 | A kind of high temperature resistant injection grade ultra-toughness PET |
| CN107189368A (en) * | 2017-06-13 | 2017-09-22 | 浙江金彩新材料有限公司 | A kind of polyester fiber master batch of high heat-resisting weatherability and preparation method thereof |
| CN109867919A (en) * | 2017-12-04 | 2019-06-11 | 广州汽车集团股份有限公司 | Polyethylene terephthalate composite material, product and preparation method |
| CN112851876A (en) * | 2020-12-31 | 2021-05-28 | 浙江数合新材料有限公司 | High-performance thermoplastic alloy plate and preparation method thereof |
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Application publication date: 20140730 |