CN106700434A - Stress-whitening-resistant polyethylene glycol terephthalate resin and preparation method thereof - Google Patents
Stress-whitening-resistant polyethylene glycol terephthalate resin and preparation method thereof Download PDFInfo
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- CN106700434A CN106700434A CN201510778977.0A CN201510778977A CN106700434A CN 106700434 A CN106700434 A CN 106700434A CN 201510778977 A CN201510778977 A CN 201510778977A CN 106700434 A CN106700434 A CN 106700434A
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Abstract
The invention belongs to the technical field of high polymer materials, and particularly relates to a stress-whitening-resistant polyethylene glycol terephthalate resin and a preparation method thereof. The material is prepared from the following ingredients in parts by weight: 80-98 parts of polyethylene glycol terephthalate resin, 2-20 parts of super-fine talcum powder, 5-30 parts of glass fiber, 2-10 parts of polybutylene terephthalate resin, 0.1-1 part of photo-thermal stabilizer and 0.1-1 part of lubricant. According to the material, stress-whitening-resistant modifier with high activity, i.e., the super-fine talcum powder, and the polyethylene glycol terephthalate resin are adopted to be easily combined into an island structure, a great quantity of tiny cracks generated when the resin generates crazes under an external force function can be adsorbed, the cracks can be prevented from further developing so as to retard or avoid the stress-whitening-resistant phenomenon of the polyethylene glycol terephthalate resin, and the polyethylene glycol terephthalate resin can be used for occasions and fields with various color requirements and other modification applications.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to pet resin that a kind of proof stress turns white and preparation method thereof.
Background technology
Current polyethylene terephthalate（PET）Resin is a kind of extremely conventional macromolecular material, and widely, but the phenomenon of White Patches, that is, the stress whitening described in us often occur when the external force effect such as being stretched, bend, impact in use to its range of application for its product.Product not only influences its outward appearance after there is stress whitening phenomenon, and the reduction of product elongation at break, intensity decreases and stress crack resistance performance can be caused to be deteriorated, and has a strong impact on product and uses.Relatively conventional in the stress white hair solution of PET resin product at present is to be heat-treated product, will product be placed under certain temperature conditionss to be post-processed and eliminate its internal stress.When the method is more complicated for product this body structure, then internal stress eradicating efficacy is just relatively more general.
The present invention is exactly to seek a kind of method to solve the problems, such as its stress whitening in terms of material, turn white modifying agent present invention adds resistance to stress, the resistance to stress is turned white the active functional group's graft of modifying agent, with the good bonding strength of resin matrix, network structure can be internally formed in resin simultaneously, so as to be produced by reduction defect and blushing after external force, its application field has then been expanded.
The content of the invention
A kind of proof stress produced the present invention be directed to the defect of prior art turns white PET resin and preparation method thereof.The features such as material has function admirable, machine-shaping is good, it is important that material preparation method is simple, production efficiency is high, can be used to be often subject to the occasion of external force simultaneously, be effectively reduced and avoid the generation of stress whitening phenomenon, expand the application field of PET resin material.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of PET resin that proof stress turns white, the material is prepared from by weight by following components：
PET resin
80~98 parts,
Superfine talcum powder
2~20 parts,
Glass fibre
5-30 parts,
Polybutylene terephthalate (PBT)（PBT）2 ~ 10 parts,
Optothermal stabilizer
0.1~1 part,
Lubricant
0.1~1 part.
Described PET resin melt index is 10 ~ 20 g/10min（Test condition is：230 DEG C, 2.16 kg）.
The superfine talcum powder mesh number is 6000-7000 mesh.
Described PBT melt index are 5 ~ 10 g/10min（Test condition is：230 DEG C, 2.16 kg）.
Described optothermal stabilizer be selected from monothioester type thermal stabilizing agent, organic tin heat stabilizer, hindered amine, hindered phenol, diphenyl phosphite or triphenyl phosphite in one or more.
It is double that described monothioester type thermal stabilizing agent is selected from thio-2 acid（Lauryl alcohol）Ester（DLTP）, thio-2 acid two（Octadecyl alcolol）Ester（DSTP）, thio-2 acid two（Tridecanol）Ester（DTDTP）Or thio-2 acid two（Tetradecyl alchohol）Ester（DMTP）In at least one；
Described organic tin heat stabilizer is selected from least one in pink salt containing mercaptan, maleic acid pink salt or pant tin carboxylate；
Described hindered amine is selected from least one in naphthylamines, diphenylamines or p-phenylenediamine；
Described hindered phenol is selected from 2,6- three-level butyl -4- methylphenols（BHT）, it is double（3,5- three-level butyl -4- hydroxy phenyls）Thioether, β-（3,5- di-tert-butyl-hydroxy phenyls）The positive octadecanol ester of propionic acid（Antioxidant 1076）Or four (β-(3,5- three-level butyl -4- hydroxy phenyls) propionic acid) pentaerythritol esters（Antioxidant 1010）In at least one.
The preferred dimercapto 2-ethyl hexyl ethanoate dioctyltin of described pink salt containing mercaptan（DOTTG）Or dimethyl dimercapto 2-ethyl hexyl ethanoate tin；
Described maleic acid pink salt is selected from maleic acid di-n-butyl tin（DBTM）；
Described pant tin carboxylate is selected from di-n-butyltin dilaurate（DBTL）Or Bis(lauroyloxy)dioctyltin（DOTL）.
Described lubricant is selected from solid paraffin, atoleine, stearic amide（SR）, methylene bis stearic amide, N, N- ethylene bis stearic acid amides（EBS）Or at least one in silicone oil.
Another goal of the invention of the invention is to provide the preparation method of the PET resin that above-mentioned proof stress turns white, and comprises the following steps：
（1）80~98 parts of PET resin, 2~20 parts of superfine talcum powder, 5~30 parts of glass fibres, 0.1~1 part of 0.1~1 part of optothermal stabilizer and lubricant are well mixed；
（2）By extruding pelletization in mixed material addition double screw extruder, PET resin material is obtained；The double-screw extruder screw temperature is 200~240 DEG C；Screw speed is in 100~500 r/min.
Preferably, the step（2）Middle screw speed is 400~500 r/min.
The present invention compared with the existing technology, has the advantages that：
1st, the present invention prepares PET resin using twin screw extrusion process, has the advantages that flow is simple, continuous, production efficiency is high, product quality is stable.
2nd, preferably, the features such as shaping with easy processing, especially the proof stress blushing of material is controlled the mechanical property of the prepared material of the present invention, can be used for shaping various requirement material and the product occasions such as outward appearance are kept in the case of repeatedly by external force.
3rd, the proof stress PET resin of turning white that prepared by the present invention can be used for the product scope of shades of colour and other modified purposes.
4th, the present invention selects superfine talcum powder, can be easily combined into PET resin " island structure " because its activity is higher, resin can be absorbed and crazing is produced when being acted on by external force and a large amount of small crackle that produces, the further development of crackle is prevented, and then can slow down or prevent the stress whitening phenomenon of PET resin.
5th, the present invention have adjusted viscosity when polymer melting is extruded from PBT, superfine talcum powder and PET collective effects, the problems such as can solve the problem that the uneven melting run into during extrusion, broken strip.
Specific embodiment
The present invention is further illustrated with reference to embodiments.
The quantitative measurement standard of the PET resin that the proof stress prepared by the present invention turns white is shown in Table 1.
Table 1
| Physical property | Method of testing |
| Tensile strength | ASTM D638 |
| Bending strength | ASTM D790 |
| Bending modulus | ASTM D790 |
| Izod notch impact strengths（Izodtest） | ASTM D256 |
| Izod unnotched impact strengths（Izodtest） | ASTM D256 |
| Density | ASTM D792 |
| Proof stress turns white performance | Company standard |
| Stress crack resistance performance | Company standard |
Wherein, proof stress turns white performance test methods：It is that size is the plastics square plate of 250mm*200mm*2mm by material injection, 500g steel balls fall from 1 meter of height and pound onto plastics square plate, see the apparent state of blush of model；
Stress crack resistance performance method of testing：Material is molded into dumbbell shape batten by ASTM D638, is bent with fixed angle, and fix its two ends, glacial acetic acid or acetone are smeared in its stress raiser, observation is by solvent etched to the time and state ftractureed.
Embodiment
1
（1）By 85 parts of PET resins, 15 parts of superfine talcum powders（6000 mesh）, 5 parts of glass fibres, 2 parts of PBT, 0.3 part of optothermal stabilizer（Antioxidant 1076：Irgasfos 168=1：2, mass ratio）And 0.1 part of lubricant stearic acid acid amides（SR）It is well mixed through high-speed stirred；
（2）By extruding pelletization in said mixture feeding double screw extruder, PET resin is obtained；
Described step（2）Middle double-screw extruder screw temperature is 210 DEG C, the r/min of screw speed 400.
The compound of preparation is molded into the standard batten of test by standard size, and the performance test results are as shown in table 2.
Embodiment
2
（1）By 98 parts of PET, 2 parts of superfine talcum powders（7000 mesh）, 10 parts of glass fibres, 5 parts of PBT, 0.6 part of optothermal stabilizer（DLTP：DBTL=1：1, mass ratio）And 0.5 part of lubricant silicone oil is well mixed through high-speed stirred；
（2）By extruding pelletization in said mixture feeding double screw extruder, PET resin is obtained；
Described step（2）Middle double-screw extruder screw temperature is 230 DEG C, the r/min of screw speed 500.
The compound of preparation is molded into the standard batten of test by standard size, and the performance test results are as shown in table 2.
Embodiment
3
（1）By 90 parts of PET resins, 10 parts of superfine talcum powders（7000 mesh）, 30 parts of glass fibres, 10 parts of PBT, 0.1 part of optothermal stabilizer（DLTP：BHT=2：1, mass ratio）And 1 part of Lubricate EBS is well mixed through high-speed stirred；
（2）By extruding pelletization in said mixture feeding double screw extruder, PET resin is obtained；
Described step（2）Middle double-screw extruder screw temperature is 200 DEG C, the r/min of screw speed 300.
The compound of preparation is molded into the standard batten of test by standard size, and the performance test results are as shown in table 2.
Embodiment
4
（1）By 95 parts of PET resins, 5 parts of superfine talcum powders（7000 mesh）, 15 parts of glass fibres, 2 parts of PBT, 0.6 part of optothermal stabilizer（DBTL：DBTM=1：1, mass ratio）And 0.5 part of lubricant solids paraffin and atoleine（Mass ratio 1：1）It is well mixed through high-speed stirred；
（2）By extruding pelletization in said mixture feeding double screw extruder, PET resin is obtained；
Described step（2）Middle double-screw extruder screw temperature is 240 DEG C, the r/min of screw speed 200.
The compound of preparation is molded into the standard batten of test by standard size, and the performance test results are as shown in table 2.
Embodiment
5
（1）By 80 parts of PET resins, 20 parts of superfine talcum powders（7000 mesh）, 10 parts of glass fibres, 2 parts of PBT, 1 part of optothermal stabilizer（DOTL：DOTTG=1：2, mass ratio）And 0.6 part of lubricant silicone oil is well mixed through high-speed stirred；
（2）By extruding pelletization in said mixture feeding double screw extruder, PET resin is obtained；
Described step（2）Middle double-screw extruder screw temperature is 200 DEG C, the r/min of screw speed 100.
The compound of preparation is molded into the standard batten of test by standard size, and the performance test results are as shown in table 2.
Comparative example
PET resin is directly molded into the standard batten of test by standard size, the performance test results are as shown in table 2.
As can be seen from Table 2, by the ratio between suitable control each component, for making material in contrast to existing PET resin material, performance is suitable in terms of the mechanical property of materials and density；But the stress-whitening resistance energy of material can be significantly improved, it is used in the multiple stress occasion required to mechanical property, appearance property etc..
The above-mentioned description to embodiment is to be understood that and apply the present invention for ease of those skilled in the art.Person skilled in the art obviously can easily make various modifications to these embodiments, and General Principle described herein is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art's announcement of the invention, does not depart from improvement that scope made and modification all should be within protection scope of the present invention.
Claims (10)
1. the pet resin that a kind of proof stress turns white, it is characterised in that：The material is prepared from by weight by following components：
80~98 parts of pet resin,
2~20 parts of superfine talcum powder,
Glass fibre 5-30 parts,
2 ~ 10 parts of polybutylene terephthalate (PBT) resin,
0.1~1 part of optothermal stabilizer,
0.1~1 part of lubricant.
2. the pet resin that a kind of proof stress according to claim 1 turns white, it is characterised in that：Melt index of the pet resin under 230 DEG C, the test condition of 2.16 kg is 10 ~ 20 g/10 min.
3. the pet resin that a kind of proof stress according to claim 1 turns white, it is characterised in that：The mesh number of the superfine talcum powder is 6000 ~ 7000 mesh.
4. the pet resin that a kind of proof stress according to claim 1 turns white, it is characterised in that：Melt index of the polybutylene terephthalate (PBT) resin under 230 DEG C, the test condition of 2.16 kg is 5 ~ 10 g/10 min.
5. the pet resin that a kind of proof stress according to claim 1 turns white, it is characterised in that：Described optothermal stabilizer is any one in monothioester type thermal stabilizing agent, organic tin heat stabilizer, hindered amine, hindered phenol, diphenyl phosphite or triphenyl phosphite or two or more combinations.
6. the pet resin that a kind of proof stress according to claim 5 turns white, it is characterised in that：Described monothioester type thermal stabilizing agent is double thio-2 acid（Lauryl alcohol）Ester, thio-2 acid two（Octadecyl alcolol）Ester, thio-2 acid two（Tridecanol）Ester or thio-2 acid two（Tetradecyl alchohol）At least one in ester；
Described organic tin heat stabilizer is at least one in pink salt containing mercaptan, maleic acid pink salt or pant tin carboxylate；
Described hindered amine is at least one in naphthylamines, diphenylamines or p-phenylenediamine；
Described hindered phenol is 2,6- three-level butyl -4- methylphenols, double（3,5- three-level butyl -4- hydroxy phenyls）Thioether, β-（3,5- di-tert-butyl-hydroxy phenyls）At least one in the positive octadecanol ester of propionic acid or four (β-(3,5- three-level butyl -4- hydroxy phenyls) propionic acid) pentaerythritol esters.
7. the pet resin that a kind of proof stress according to claim 6 turns white, it is characterised in that：Described pink salt containing mercaptan is dimercapto 2-ethyl hexyl ethanoate dioctyltin or dimethyl dimercapto 2-ethyl hexyl ethanoate tin；
Described maleic acid pink salt is maleic acid di-n-butyl tin；
Described pant tin carboxylate is di-n-butyltin dilaurate or Bis(lauroyloxy)dioctyltin.
8. the pet resin that a kind of proof stress according to claim 1 turns white, it is characterised in that：Described lubricant is solid paraffin, atoleine, stearic amide, methylene bis stearic amide, N, at least one in N- ethylene bis stearic acid amides or silicone oil.
9. the preparation method of the pet resin that a kind of proof stress described in claim 1 turns white, it is characterised in that comprise the following steps：
（1）80~98 parts of pet resin, 2~20 parts of superfine talcum powder, 5~30 parts of glass fibres, 0.1~1 part of 0.1~1 part of optothermal stabilizer and lubricant are well mixed；
（2）By extruding pelletization in mixed material addition double screw extruder, pet resin material is obtained；The double-screw extruder screw temperature is 200~240 DEG C；Screw speed is in 100~500 r/min.
10. the preparation method of the pet resin that a kind of proof stress according to claim 14 turns white, it is characterised in that：The step（2）Middle screw speed is 400~500 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778977.0A CN106700434A (en) | 2015-11-15 | 2015-11-15 | Stress-whitening-resistant polyethylene glycol terephthalate resin and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778977.0A CN106700434A (en) | 2015-11-15 | 2015-11-15 | Stress-whitening-resistant polyethylene glycol terephthalate resin and preparation method thereof |
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| CN106700434A true CN106700434A (en) | 2017-05-24 |
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| CN201510778977.0A Pending CN106700434A (en) | 2015-11-15 | 2015-11-15 | Stress-whitening-resistant polyethylene glycol terephthalate resin and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539729A (en) * | 2022-01-27 | 2022-05-27 | 浙江阿克希龙舜华铝塑业有限公司 | Resin composition for manufacturing middle bundle core, middle bundle core and packaging tube |
-
2015
- 2015-11-15 CN CN201510778977.0A patent/CN106700434A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 廖家志等: ""低翘曲玻纤增强PET复合材料的制备和性能研究"", 《中国塑料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539729A (en) * | 2022-01-27 | 2022-05-27 | 浙江阿克希龙舜华铝塑业有限公司 | Resin composition for manufacturing middle bundle core, middle bundle core and packaging tube |
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Application publication date: 20170524 |