CN106280294A - A kind of fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof - Google Patents
A kind of fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof Download PDFInfo
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- CN106280294A CN106280294A CN201510321256.7A CN201510321256A CN106280294A CN 106280294 A CN106280294 A CN 106280294A CN 201510321256 A CN201510321256 A CN 201510321256A CN 106280294 A CN106280294 A CN 106280294A
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- polymer blend
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Abstract
The invention discloses a kind of fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof, it is by polyester 100 parts, isopropyl palmitate 0.5-5 part, glass fibre 20-100 part, antioxidant 0.1-0.5 part, lubricating modification agent 1-3 part and coupling agent 0.1-0.2 part is blended, extruding pelletization is made.Isopropyl palmitate prevents glass emergence on the surface, improves processing fluidity, reduces screw torque, improves the effect of product surface fineness；Can solve the phenomenon of composition system layering simultaneously, compositions mechanical performance especially shock resistance is greatly improved, the polymer blend of preparation is a kind of preferable engineering plastics of rigid-tough balance.
Description
Technical field
The invention belongs to engineering plastics field, relate to a kind of fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof.
Background technology
Polyester is the material that a kind of performance is the most excellent, owing to it has good mechanical property, good coloring, chemical resistance etc., has in spinning and thin film packaging industry and is widely applied very much.And as engineering plastics, the consumption of polyester engineering plastic is less, main application fields is electric, mechanical, automobile, light industry and building materials industry.Although polyester has the biggest advantage in hot strength, bending strength and bending modulus, but can not apply the field having more high tenacity while some require possess high intensity rigidity.
The most typically being reached the rigidity-toughness balanced of plastics by modified method, and resin tooth typically all uses glass fibre, and add common toughener in the compositions adding glass fibre and go to increase shock resistance, effect is excessively poor.Shock resistance containing strengthen glass polymer blend the most how is greatly improved be significant.
Summary of the invention
It is an object of the present invention to provide fiberglass reinforced rigidity-toughness balanced type polymer blend and preparation method thereof, the method can increase the mechanical performance especially shock resistance of polyester, can prepare fiberglass reinforced rigidity-toughness balanced type polyester engineering plastic.
For achieving the above object, the present invention is by the following technical solutions:
A kind of fiberglass reinforced rigidity-toughness balanced type polymer blend, is prepared from by weight by following components:
Polyester
100 parts,
Isopropyl palmitate 0.5-5 part,
Glass fibre 20-100 part,
Antioxidant 0.1-0.5 part,
Lubricating modification agent 1-3 part,
Coupling agent 0.1-0.2 part.
At least one in polyethylene terephthalate (PET), PTT (PTT), polybutylene terephthalate (PBT) (PBT) of described polyester.
The acidity (mgKOH/g)≤0.5 of described isopropyl palmitate, index of refraction (nD20) are 1.435, ignition residue %≤0.1.
Described glass fibre is continuous glass fibre.
Described glass fibre is surface treated glass fibre, and preferably megalith group produces 988A continuous glass fibre.
Described antioxidant is alkyl Polyphenols antioxidant.
Described alkyl Polyphenols antioxidant is formed by weight 1:1 is compounding by four [β-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid] pentaerythritol esters and three ［ 2.4-di-tert-butyl-phenyl ］ phosphite ester.
Described lubricating modification agent is silicone powder, and preferably Yuyao Kai Mulihua plastic cement Science and Technology Ltd. sells SK20R silicone powder.
Described coupling agent is silane coupler, preferably gamma-aminopropyl-triethoxy-silane (Silane coupling agent KH550).
Another goal of the invention of the present invention is to provide the preparation method of above-mentioned fiberglass reinforced rigidity-toughness balanced type polymer blend, comprises the following steps:
(1) raw material stoving
Polyester is placed in 80-120 DEG C of baking oven drying；
(2) raw material mixing
Each component raw material of following weight portion is weighed: polyester 100 parts, isopropyl palmitate 0.5-5 part, glass fibre 20-100 part by proportioning, antioxidant 0.1-0.5 part, lubricating modification agent 0.1-0.5 part, coupling agent 0.1-0.2 part, join in high mixer, at normal temperatures mix homogeneously；
(3) extruding pelletization
Being joined by the raw mixture obtained in step (1) in the hopper of double screw extruder, simultaneously the glass at double screw extruder adds entrance and is involved in continuous glass-fiber, and melted, extruding pelletization obtains polymer blend.
In described step (3), double screw extruder from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 245 ~ 255 DEG C, 245 ~ 255 DEG C, 240 ~ 250 DEG C, 240 ~ 250 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 255 ~ 265 DEG C, its head temperature is 260 ~ 270 DEG C, screw speed is 250 ~ 300r/min.
The method have the advantages that
The present composition is also equipped with the shock resistance of excellence while possessing very high intensity, is a kind of preferable engineering plastics of rigid-tough balance；Present invention process is simple and easy to do, and machine-shaping property is good, the easy demoulding of goods, product good-looking.
Isopropyl palmitate is exclusively used in fiberglass reinforcing polyester system as anti-impact modifier, in the compositions of fiberglass reinforcing polyester, can play and prevent glass emergence on the surface, improves processing fluidity, reduces screw torque, improves the effect of product surface fineness；The phenomenon of composition system layering can be solved simultaneously, compositions mechanical performance especially shock resistance is greatly improved.
Detailed description of the invention
Below in conjunction with specific embodiment, method involved in the present invention and technique being described, the following example is merely to illustrate operating process and the formula of the present invention, does not limit protection scope of the present invention.
In example below, glass fibre is that megalith group produces 988A continuous glass fibre；
Antioxidant is that four [β-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid] pentaerythritol esters and three ［ 2.4-di-tert-butyl-phenyl ］ phosphite ester form by weight 1:1 is compounding；
Lubricating modification agent is that Yuyao Kai Mulihua plastic cement Science and Technology Ltd. sells SK20R silicone powder；
Coupling agent is gamma-aminopropyl-triethoxy-silane (Silane coupling agent KH550).
The formula of embodiment 1-9 is as shown in table 1, and its preparation method is as follows:
(1) raw material mixing
After polyester is placed in 80-120 DEG C of baking oven drying, polyester, isopropyl palmitate, glass fibre, antioxidant, lubricating modification agent, coupling agent are joined in high mixer, mix homogeneously at normal temperatures；
(2) extruding pelletization
Being joined by the raw mixture obtained in step (1) in the hopper of double screw extruder, simultaneously the glass at double screw extruder adds entrance and is involved in continuous glass-fiber, melt extrudes pelletize；Obtain the polymer blend of the present invention.
Wherein extruder from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 245 ~ 255 DEG C, 245 ~ 255 DEG C, 240 ~ 250 DEG C, 240 ~ 250 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 255 ~ 265 DEG C, head temperature is 260 ~ 270 DEG C；Screw speed is 250 ~ 300r/min.
Comparative example 1-3 contrasts with embodiment 7-9, and as shown in table 1, preparation method is as follows for its formula composition:
(1) raw material mixing
After polyester is placed in 80-120 DEG C of baking oven drying, polyester, glass fibre, antioxidant, lubricating modification agent, coupling agent are joined in high mixer, mix homogeneously at normal temperatures；
(2) extruding pelletization
Being joined by the raw mixture obtained in step (1) in the hopper of double screw extruder, simultaneously the glass at double screw extruder adds entrance and is involved in continuous glass-fiber, melt extrudes pelletize；Obtain the polymer blend of the present invention.
Wherein extruder from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 245 ~ 255 DEG C, 245 ~ 255 DEG C, 240 ~ 250 DEG C, 240 ~ 250 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 255 ~ 265 DEG C, head temperature is 260 ~ 270 DEG C；Screw speed is 250 ~ 300r/min.
Table 1 formula forms
| PET | PTT | PBT | Glass/part | Isopropyl palmitate | Antioxidant | Lubricant silicone powder | Coupling agent KH550 | |
| Embodiment 1 | 100 | 20 | 0.5 | 0.1 | 3 | 0.1 | ||
| Embodiment 2 | 100 | 20 | 5 | 0.2 | 2 | 0.1 | ||
| Embodiment 3 | 50 | 50 | 30 | 4 | 0.5 | 1 | 0.1 | |
| Embodiment 4 | 50 | 50 | 50 | 1 | 0.1 | 3 | 0.1 | |
| Embodiment 5 | 50 | 50 | 100 | 3 | 0.2 | 2 | 0.2 | |
| Embodiment 6 | 100 | 50 | 2 | 0.5 | 1 | 0.2 | ||
| Embodiment 7 | 100 | 100 | 2 | 0.1 | 3 | 0.1 | ||
| Comparative example 1 | 100 | 100 | 0 | 0.1 | 3 | 0.1 | ||
| Embodiment 8 | 100 | 30 | 3 | 0.2 | 2 | 0.2 | ||
| Comparative example 2 | 100 | 30 | 0 | 0.2 | 2 | 0.2 | ||
| Embodiment 9 | 100 | 50 | 4 | 0.5 | 1 | 0.1 | ||
| Comparative example 3 | 100 | 50 | 0 | 0.5 | 1 | 0.2 |
Note: in table 1, the unit of all components is weight portion.
Pellet above-described embodiment 1-9 and comparative example 1-3 prepared dries 6-10 hour in the baking oven of 80-120 DEG C, then according to above-mentioned Shooting Technique injection standard batten, carries out Mechanics Performance Testing, testing standard and performance data and is shown in Table 2.
Table 2 performance test
| Hot strength/Mpa | Bending strength/Mpa | Bending modulus/Mpa | Simply supported beam notch impact strength/KJ/m2 | |
| Testing standard | ASTM | ASTM | ASTM | ASTM |
| Embodiment 1 | 116 | 129 | 4020 | 25.5 |
| Embodiment 2 | 110 | 131 | 3766 | 35.5 |
| Embodiment 3 | 112 | 162 | 5057 | 44.4 |
| Embodiment 4 | 136 | 173 | 8512 | 46.6 |
| Embodiment 5 | 168 | 239 | 12516 | 40.5 |
| Embodiment 6 | 141 | 199 | 8421 | 23.5 |
| Embodiment 7 | 178 | 245 | 12750 | 50.1 |
| Comparative example 1 | 124 | 192 | 7055 | 1.3 |
| Embodiment 8 | 156 | 171 | 9724 | 50.6 |
| Comparative example 2 | 97 | 122 | 5336 | 1.8 |
| Embodiment 9 | 140 | 181 | 8435 | 56.3 |
| Comparative example 3 | 89 | 141 | 5124 | 2.1 |
The present invention adds isopropyl palmitate can prevent glass emergence on the surface, improves processing fluidity, reduces screw torque, improves the effect of product surface fineness；The phenomenon of composition system layering can be solved simultaneously, compositions mechanical performance especially shock resistance is greatly improved.
In conjunction with Tables 1 and 2 it can be seen that owing to the addition of isopropyl palmitate in the present invention, so the mechanical performance of polymer blend especially shock resistance exceptional.Comparative example 7 and comparative example 1, owing to adding isopropyl palmitate in embodiment 7, so the bending modulus of polymer blend and simply supported beam notch impact strength increase substantially.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply the present invention.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art should be within protection scope of the present invention according to the announcement of the present invention, the improvement made without departing from scope and amendment.
Claims (10)
1. a fiberglass reinforced rigidity-toughness balanced type polymer blend, it is characterised in that: it is prepared from by weight by following components:
Polyester
100 parts,
Isopropyl palmitate 0.5-5 part,
Glass fibre
20-100 part,
Antioxidant
0.1-0.5 part,
Lubricating modification agent
1-3 part,
Coupling agent
0.1-0.2 part.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 1, it is characterised in that: at least one in polyethylene terephthalate, PTT, polybutylene terephthalate (PBT) of described polyester.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 1, it is characterised in that: the acidity (mgKOH/g)≤0.5 of described isopropyl palmitate, index of refraction (nD20) they are 1.435, ignition residue %≤0.1.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 1, it is characterised in that: described glass fibre is continuous glass fibre.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 1, it is characterised in that: described antioxidant is alkyl Polyphenols antioxidant.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 4, it is characterized in that: described alkyl Polyphenols antioxidant is formed by weight 1:1 is compounding by four [β-(3,5-di-tert-butyl-hydroxy phenyl) propanoic acid] pentaerythritol esters and three ［ 2.4-di-tert-butyl-phenyl ］ phosphite ester.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 1, it is characterised in that: described lubricating modification agent is silicone powder.
Fiberglass reinforced rigidity-toughness balanced type polymer blend the most according to claim 1, it is characterised in that: described coupling agent is silane coupler.
9. the preparation method of fiberglass reinforced rigidity-toughness balanced type polymer blend as described in any one of claim 1-8, it is characterised in that: comprise the following steps:
(1) raw material stoving
Polyester is placed in 80-120 DEG C of baking oven drying；
(2) raw material mixing
Each component raw material of following weight portion is weighed: polyester 100 parts, isopropyl palmitate 0.5-5 part, glass fibre 20-100 part by proportioning, antioxidant 0.1-0.5 part, lubricating modification agent 0.1-0.5 part, coupling agent 0.1-0.2 part, join in high mixer, at normal temperatures mix homogeneously；
(3) extruding pelletization
Being joined by the raw mixture obtained in step (1) in the hopper of double screw extruder, simultaneously the glass at double screw extruder adds entrance and is involved in continuous glass-fiber, and melted, extruding pelletization obtains polymer blend.
Preparation method the most according to claim 9, it is characterized in that: in described step (3), double screw extruder from spout to head totally ten sections of extrusion temperatures be respectively 190 ~ 230 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 245 ~ 255 DEG C, 245 ~ 255 DEG C, 240 ~ 250 DEG C, 240 ~ 250 DEG C, 250 ~ 260 DEG C, 250 ~ 260 DEG C, 255 ~ 265 DEG C, its head temperature is 260 ~ 270 DEG C, screw speed is 250 ~ 300r/min.
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| CN103951949A (en) * | 2014-04-02 | 2014-07-30 | 合肥杰事杰新材料股份有限公司 | Glass fiber enhanced toughening balanced type PET composition and preparation method thereof |
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| CN103951949A (en) * | 2014-04-02 | 2014-07-30 | 合肥杰事杰新材料股份有限公司 | Glass fiber enhanced toughening balanced type PET composition and preparation method thereof |
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