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Preparation method of flame-retardant and high-heat-resisting polyethylene terephthalate

A technology of ethylene glycol phthalate and high heat resistance, applied in the field of polymer material preparation, can solve the problems that PET cannot meet the application requirements, CPET has poor toughness, poor flame retardancy, etc., and achieves excellent mechanical properties and processing Excellent performance and improved heat resistance

Inactive Publication Date: 2017-02-08
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the highest service temperature of CPET modified by nucleation, even glass fiber reinforced PET, is still limited to 220°C
Moreover, due to the wick effect of glass fibers, the reinforced PET has the defect of poor flame retardancy, and the high crystallinity also makes the toughness of CPET poor.
Due to the above defects, the existing PET cannot meet the application requirements in some special fields and environments

Method used

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  • Preparation method of flame-retardant and high-heat-resisting polyethylene terephthalate

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Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of flame-retardant, high heat-resistant polyethylene terephthalate,

[0031] The proportioning of raw material components by mass percentage is:

[0032]

[0033] The steps are:

[0034] a. Raw material pretreatment: Dry PET in a vacuum oven at 140°C for 3 hours, dry nano-attapulgite, organic phosphorus flame retardant FR-104, antioxidant 1010 and antioxidant 168 at 110°C for 2 hours ;

[0035] b. Ingredients: weigh the dried material according to the proportion, pre-mix with the anti-hydrolysis agent UN-03 and lubricant PETS weighed according to the proportion in advance, and then continue to mix in the high-speed mixer for 10 minutes, and then discharge;

[0036] c. Processing: Add the mixture into the feeding hopper of the twin-screw extruder; under the conditions of feeding speed of 100r / min, screw speed of 400r / min, and processing temperature of 240°C, the mixture is melted, After extrusion, cooling and pelletizing, the pellets are dried ...

Embodiment 2

[0038] A preparation method of flame-retardant, high heat-resistant polyethylene terephthalate,

[0039] The proportioning of raw material components by mass percentage is:

[0040]

[0041] The steps are:

[0042] a. Raw material pretreatment: Put PET in a vacuum drying oven at 140°C for 3 hours and dry the nano-attapulgite, anhydride chain extender MB-D, organic phosphorus flame retardant FR-104, antioxidant 1010 and antioxidant Agent 168 was dried at 110°C for 2 hours;

[0043] b. Ingredients: weigh the dried material according to the proportion, pre-mix with the anti-hydrolysis agent UN-03 and lubricant AC6A weighed in advance, then continue to mix in the high-speed mixer for 10 minutes, and discharge;

[0044] c. Processing: Add the mixture into the feeding hopper of the twin-screw extruder; under the conditions of feeding speed of 40r / min, screw speed of 400r / min, and processing temperature of 260°C, the mixture is melted, Extruded, cooled and pelletized, the pelle...

Embodiment 3

[0046] A preparation method of flame-retardant, high heat-resistant polyethylene terephthalate,

[0047] The proportioning of raw material components by mass percentage is:

[0048]

[0049] The steps are:

[0050] a. Raw material pretreatment: Put PET and polycarbonate (PC) in a vacuum oven at 140°C for 3 hours and dry them for attapulgite, organic phosphorus flame retardant FR-104, antioxidant 1010 and antioxidant 168 Dry at 110°C for 2 hours;

[0051] b. Ingredients: weigh the dried material according to the proportion, pre-mix with the anti-hydrolysis agent UN-03 and lubricant AC6A weighed in advance, then continue to mix in the high-speed mixer for 10 minutes, and discharge;

[0052] c. Processing: Add the mixture into the feeding hopper of the twin-screw extruder; under the conditions of feeding speed of 40r / min, screw speed of 400r / min, and processing temperature of 260°C, the mixture is melted, Extruded, cooled and pelletized, the pellets were dried at 120°C for ...

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Abstract

The invention discloses a preparation method of flame-retardant and high-heat-resisting polyethylene terephthalate. The preparation method is characterized by comprising the following steps: drying raw materials; uniformly mixing the dried raw material, namely polyethylene terephthalate aggregates, a blended polymer, a nucleating agent, a chain extender, a fire retardant, a stabilizer, a hydrolysis resisting agent and a lubricating agent; adding a mixed material into a double-screw extruder; performing melting extrusion, cooling, dicing and drying, thus obtaining the lame-retardant and high-heat-resisting polyethylene terephthalate with the characteristics of good heat resistance, mechanical property and processing performance; a sheet obtained by compression moulding forming of master batches or a coiled material obtained by a flow casting method can be continuously used at the high temperature of 240DEG C for 30 minutes. The PET master batches obtained by the preparation method disclosed by the invention can be processed into forms such as fibers, fabrics, thin films and sheets, replaces traditional PET and CPET for being applied to the fields with higher heat resisting requirements, such as aviation meal boxes, or can replace nylon with high cost.

Description

technical field [0001] The invention belongs to the preparation of polymer materials, and relates to a preparation method of flame-retardant and high heat-resistant polyethylene terephthalate, in particular to a preparation method of modified polyethylene terephthalate . In addition to the excellent mechanical properties, solvent resistance and non-toxic properties of ordinary polyethylene terephthalate (abbreviated as PET), the product prepared by the present invention also has significantly improved heat resistance under the condition that the processing performance is not affected. , Even higher than crystalline PET (referred to as CPET). Therefore, the flame-retardant, high-heat-resistant polyethylene terephthalate products prepared by the present invention can be processed into fibers, fabrics, films, sheets, etc., and can replace traditional PET and CPET in fields with high heat-resistant requirements. . Background technique [0002] Polyethylene terephthalate (PET ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L69/00C08L81/02C08L85/02C08L77/06C08K13/02C08K3/34C08K5/134C08K5/526C08K3/22
CPCC08L67/02C08K3/346C08K5/1345C08K5/526C08K13/02C08K2201/011C08L2201/02C08L2201/08C08L2205/03C08L2205/24
Inventor 任先艳项林南刘才林韩汶欣申毅锋
Owner SOUTHWEAT UNIV OF SCI & TECH
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