CN101475733B - Flame-retardant environment friendly PET thermal shrinkage material and preparation thereof - Google Patents
Flame-retardant environment friendly PET thermal shrinkage material and preparation thereof Download PDFInfo
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- CN101475733B CN101475733B CN2008102421086A CN200810242108A CN101475733B CN 101475733 B CN101475733 B CN 101475733B CN 2008102421086 A CN2008102421086 A CN 2008102421086A CN 200810242108 A CN200810242108 A CN 200810242108A CN 101475733 B CN101475733 B CN 101475733B
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Abstract
The invention relates to a flame retardant and environment-friendly PET heat-shrinkable material and a method for preparing the same. The flame retardant and environment-friendly PET heat-shrinkable material comprises 40 to 60 percent of PETP, 15 to 30 percent of PETG, 5 to 8 percent of poly terephthalic acid succinimide ester, 1 to 2 percent of thermoplastic elastomers, 10 to 20 percent of phosphate flame retardant and 0.01 to 0.05 percent of lubricant. The method comprises the following steps: 1, pre-drying raw materials; 2, blending the materials and pelletizing; 3, blending material and drying; and 4, extruding to mold. The method is simple in technology, the flame retardant and environment-friendly PET heat-shrinkable material has better fireproof flame retardant property than the prior PET heat-shrinkable material, and all the environmental standards are higher than the prior PET heat-shrinkable material.
Description
Technical field
Technical solution of the present invention relates to a kind of material contracting with heat and preparation method thereof, is specifically related to a kind of flame-retardant environment friendly PET thermal shrinkage material and preparation method thereof.
Background technology
Environment-friendly PE T (Polyethylene Terephthalate polyethylene terephthalate) heat-shrinkable T bush can replace the PVC heat-shrinkable T bush as a kind of environment-friend substitution product of PVC (Polyvinyl chloride polyvinyl chloride) heat-shrink tube substantially in the heat-shrinkable T bush industry.The PET heat-shrinkable T bush all is being better than the PVC heat-shrink tube aspect contraction, heat-resisting, water-fast, the anti-solvent.Aspect fire-retardant, the PVC heat-shrinkable T bush has been in the stage of maturity, and the PET heat-shrinkable T bush almost is in the embryonic stage.Environment-friendly PE T heat-shrinkable T bush is as a kind of Halogen product, and the optional scope relative narrower of its fire retardant does not have PVC so wide; And it is higher in the PET heat-shrink tube production process owing to processing temperature, surpass more than 200 ℃, can ad infinitum add plasticizer and weighting agent unlike PVC, must guarantee that environmental-protecting performance meets the requirements simultaneously, therefore also limit the exploitation of PET flame retardant properties, the lifting of flame retardant rating.
Summary of the invention
In order to solve this technical problem of PET heat-shrink tube flame retardant properties difference that exists in the prior art, the invention provides a kind of flame-retardant environment friendly PET thermal shrinkage material.
The present invention also provides the preparation method of flame-retardant environment friendly PET thermal shrinkage material.
The technical solution adopted in the present invention is a kind of flame-retardant environment friendly PET thermal shrinkage material, described flame-retardant environment friendly PET thermal shrinkage material comprises: polyethylene terephthalate (PET): 40%-60%, glycol-modified-polyethylene terephthalate (PETG): 15%-30%, Polybutylene Terephthalate (PBT): 5%-8%, thermoplastic elastomer (TPE): 1%-2%, phosphoric acid ester fire retardant: 10%-20% and lubricant: 0.01%-0.05%.
According to an optimal technical scheme of the present invention: the content of described polyethylene terephthalate is: 45%-50%.
According to an optimal technical scheme of the present invention: described glycol-modified-content of polyethylene terephthalate is: 24%-30%.
According to an optimal technical scheme of the present invention: the content of described Polybutylene Terephthalate is: 5%-8%.
According to an optimal technical scheme of the present invention: described thermoplastic elastomer (TPE) is a thermoplastic polyester elastomer.
According to an optimal technical scheme of the present invention: described phosphoric acid ester fire retardant is a triphenylphosphate, and content is: 15%-20%.
According to an optimal technical scheme of the present invention: described lubricant is a stearate.
The present invention also provides a kind of flame-retardant environment friendly PET thermal shrinkage material preparation method, and described flame-retardant environment friendly PET thermal shrinkage material preparation method comprises step: the first step, with glycol-modified-polyethylene terephthalate through 70～75 ℃ of dryings 6 hours; Second step, described glycol-modified-polyethylene terephthalate and other starting material that drying is good carry out mixing granulation; After the 3rd step, the material grain that blend is made mix through homogenizer, under 145 ℃ of-150 ℃ of conditions dry 4 hours; The 4th step, the compound that drying is good pass through extruder for shaping.
According to an optimal technical scheme of the present invention: described second step is specially after described glycol-modified-polyethylene terephthalate that drying is good and other starting material pass through homogenizer earlier and mix, by twin screw blend granulation.
According to an optimal technical scheme of the present invention: the working temperature of each section of forcing machine is in described the 4th step: first district: 220 ℃-240 ℃, second district: 225 ℃-255 ℃, the 3rd district: 240 ℃-270 ℃, the 4th district: 255 ℃-285 ℃, the 5th district: 235 ℃-265 ℃, the 6th district: 225 ℃-245 ℃, SECTOR-SEVEN: 210 ℃-230 ℃.
Technical solution of the present invention has been abandoned with the addition manner of powder as fire retardant, change the interpolation liquid flame retardant into, composition to the PET material contracting with heat improves, and changes conventional processing conditions in granulation with when extruding, and produces not only environmental protection but also fire-retardant Novel PET material contracting with heat.Novel flame-retardant environment friendly PET thermal shrinkage material has better fire retardant performance than conventional PET material contracting with heat, and every environmental protection standard is higher than existing PET material contracting with heat.The Application Areas of PET material contracting with heat of the present invention has been extended to played good safety precaution effect in fire prevention household electrical appliance and the various electronic product.
Description of drawings
Fig. 1. a kind of flame-retardant environment friendly PET thermal shrinkage material preparation method schema in flame-retardant environment friendly PET thermal shrinkage material of the present invention and preparation method thereof;
Fig. 2. forcing machine is respectively distinguished the temperature synoptic diagram.
Embodiment
The present invention will be described below in conjunction with drawings and Examples:
Flame-retardant environment friendly PET thermal shrinkage material comprises described in the technical solution of the present invention: polyethylene terephthalate (PET): 40%-60%, glycol-modified-polyethylene terephthalate (PETG): 15%-30%, Polybutylene Terephthalate (PBT): 5%-8%, thermoplastic elastomer (TPE): 1%-2%, phosphoric acid ester fire retardant: 10%-20% and lubricant: 0.01%-0.05%.
Embodiment 1: polyethylene terephthalate (PET): 48%, glycol-modified-polyethylene terephthalate (PETG): 24%, Polybutylene Terephthalate (PBT): 8%, thermoplastic elastomer (TPE): 1.95%, phosphoric acid ester fire retardant: 18% and lubricant: 0.05%.
Embodiment 2: polyethylene terephthalate (PET): 45%, glycol-modified-polyethylene terephthalate (PETG): 28%, Polybutylene Terephthalate (PBT): 8%, thermoplastic elastomer (TPE): 1.95%, phosphoric acid ester fire retardant: 17% and lubricant: 0.05%.
Embodiment 3: polyethylene terephthalate (PET): 50%, glycol-modified-polyethylene terephthalate (PETG): 25%, Polybutylene Terephthalate (PBT): 8%, thermoplastic elastomer (TPE): 1.45%, phosphoric acid ester fire retardant: 15.5% and lubricant: 0.05%.
Embodiment 4: polyethylene terephthalate (PET): 45%, glycol-modified-polyethylene terephthalate (PETG): 30%, Polybutylene Terephthalate (PBT): 5%, thermoplastic elastomer (TPE): 1.45%, phosphoric acid ester fire retardant: 18.5% and lubricant: 0.05%.
See also a kind of flame-retardant environment friendly PET thermal shrinkage material preparation method schema in Fig. 1 flame-retardant environment friendly PET thermal shrinkage material of the present invention and preparation method thereof.As shown in Figure 1, described flame-retardant environment friendly PET thermal shrinkage material preparation method comprises step: the first step, with glycol-modified-polyethylene terephthalate through 70～75 ℃ of dryings 6 hours; Second step, described glycol-modified-polyethylene terephthalate and other starting material that drying is good carry out mixing granulation; After the 3rd step, the material grain that blend is made mix through homogenizer, under 145 ℃ of-150 ℃ of conditions dry 4 hours; The 4th step, the compound that drying is good pass through extruder for shaping.
Be specially after described glycol-modified-polyethylene terephthalate that drying is good and other starting material pass through homogenizer earlier and mix in second step described in the preferred technical solution of the present invention, by twin screw blend granulation.The working temperature of each section of forcing machine is in described the 4th step: the first district 101:220 ℃-240 ℃, the second district 102:225 ℃-255 ℃, the 3rd district 103:240 ℃-270 ℃, the 4th district 104:255 ℃-285 ℃, the 5th district 105:235 ℃-265 ℃, the 6th district 106:225 ℃-245 ℃, SECTOR-SEVEN 107:210 ℃-230 ℃.
Forcing machine is respectively distinguished the temperature synoptic diagram can consult Fig. 2.
Technical solution of the present invention has been abandoned with the addition manner of powder as fire retardant, change the interpolation liquid flame retardant into, composition to the PET material contracting with heat improves, and changes conventional processing conditions in granulation with when extruding, and produces not only environmental protection but also fire-retardant Novel PET material contracting with heat.Novel flame-retardant environment friendly PET thermal shrinkage material has better fire retardant performance than conventional PET material contracting with heat, and every environmental protection standard is higher than existing PET material contracting with heat.The Application Areas of PET material contracting with heat of the present invention has been extended to played good safety precaution effect in fire prevention household electrical appliance and the various electronic product.
Above content be in conjunction with concrete optimal technical scheme to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. flame-retardant environment friendly PET thermal shrinkage material, it is characterized in that: described flame-retardant environment friendly PET thermal shrinkage material comprises: polyethylene terephthalate: 40%-60%, glycol-modified-polyethylene terephthalate: 15%-30%, Polybutylene Terephthalate: 5%-8%, thermoplastic elastomer: 1%-2%, phosphoric acid ester fire retardant: 10%-20% and lubricant: 0.01%-0.05%.
2. according to the described flame-retardant environment friendly PET thermal shrinkage material of claim 1, it is characterized in that: the content of described polyethylene terephthalate is: 45%-50%.
3. according to the described flame-retardant environment friendly PET thermal shrinkage material of claim 1, it is characterized in that: described glycol-modified-content of polyethylene terephthalate is: 24%-30%.
4. according to the described flame-retardant environment friendly PET thermal shrinkage material of claim 1, it is characterized in that: described thermoplastic elastomer is a thermoplastic polyester elastomer.
5. according to the described flame-retardant environment friendly PET thermal shrinkage material of claim 1, it is characterized in that: described phosphoric acid ester fire retardant is a triphenylphosphate, and content is: 15%-20%.
6. according to the described flame-retardant environment friendly PET thermal shrinkage material of claim 1, it is characterized in that: described lubricant is a stearate.
7. flame-retardant environment friendly PET thermal shrinkage material preparation method as claimed in claim 1, it is characterized in that: described flame-retardant environment friendly PET thermal shrinkage material preparation method comprises step:
A: with glycol-modified-polyethylene terephthalate through 70～75 ℃ of dryings 6 hours;
B: described glycol-modified-polyethylene terephthalate and other starting material that drying is good carry out mixing granulation;
C: after the material grain that blend is made mixes through homogenizer, under 145 ℃ of-150 ℃ of conditions dry 4 hours;
D: the compound that drying is good passes through extruder for shaping.
8. according to the described flame-retardant environment friendly PET thermal shrinkage material preparation method of claim 7, it is characterized in that: described step B is specially after described glycol-modified-polyethylene terephthalate that drying is good and other starting material mix through homogenizer earlier, by twin screw blend granulation.
9. according to the described flame-retardant environment friendly PET thermal shrinkage material preparation method of claim 7, it is characterized in that: the working temperature of each section of forcing machine is among the described step D: first district (101): 220 ℃-240 ℃, second district (102): 225 ℃-255 ℃, the 3rd district (103): 240 ℃-270 ℃, the 4th district (104): 255 ℃-285 ℃, the 5th district (105): 235 ℃-265 ℃, the 6th district (106): 225 ℃-245 ℃, SECTOR-SEVEN (107): 210 ℃-230 ℃.
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| CN102153841B (en) * | 2011-03-21 | 2012-08-22 | 深圳市长园长通新材料有限公司 | Boiling and high-temperature resistant polyester thermal contraction material and preparation method thereof |
| CN102634175A (en) * | 2012-04-26 | 2012-08-15 | 江门市道生工程塑料有限公司 | Transparent PET (Polyethylene Terephthalate) packing material applicable to high-frequency welding, and preparation method thereof |
| CN109456579B (en) * | 2018-10-18 | 2021-02-09 | 长园长通新材料股份有限公司 | Puncture-resistant PET heat-shrinkable tubing material and preparation method thereof |
| CN109679303B (en) * | 2018-12-19 | 2021-02-09 | 长园长通新材料股份有限公司 | High-temperature-resistant high-humidity-resistant PET heat-shrinkable tubing material and preparation method thereof |
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