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A composition containing polyethylene terephthalate and its preparation method

A technology of polyethylene terephthalate and polyethylene terephthalate, which is applied in the field of compositions containing polyethylene terephthalate, and can solve problems such as increased viscosity and difficulty in extrusion , achieve the effect of lower torque value, higher strength and lower energy consumption

Active Publication Date: 2015-08-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the PET composite material produced by this method has high impact strength and tensile strength, due to the addition of chain extenders, nylon nucleating agents, etc., the viscosity increases, making it difficult to extrude

Method used

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  • A composition containing polyethylene terephthalate and its preparation method

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preparation example Construction

[0033] In the preparation method of the present invention, in order to further improve the performance of the polyethylene terephthalate-containing composition, it is preferable that the above-mentioned mixture undergoes a 3-5 minute high-speed stirring process before melt extrusion. The uniformly stirred mixture is melt-extruded, and the processability of the obtained composition is better.

[0034] In the preparation method of the present invention, the glass fiber and sodium carbonate are added during extrusion, wherein the glass fiber is added through the glass fiber port of the extruder, and the sodium carbonate is added through a side screw.

[0035] When the composition to be prepared is a composition containing at least one of antioxidant, flame retardant and toughening agent, the timing and way of adding the antioxidant, flame retardant and toughening agent can refer to existing technology. Preferably, the flame retardant is added during the extrusion process, and it...

Embodiment 1

[0054] 100 parts of polyethylene terephthalate (intrinsic viscosity is 0.7dl / g) chips, 5 parts of ultra-fine pyrene-butadiene powder rubber (particle size is 50-150 nanometers), 0.5 parts of sodium benzoate, 0.3 parts Antioxidant (weight ratio of antioxidant 1010 to antioxidant 168 is 2:1), 0.2 parts of epoxy soybean oil (epoxy value ≥ 6.0, iodine value ≤ 6.0, chemically pure), 6 parts of brominated epoxy resin (trade name BEP-3) and 0.08 parts of phthalic anhydride are put into a high-speed mixer, stirred at room temperature for 4 minutes, and stirred evenly. Using WP ZSK25 twin-screw, the temperature in each section is 230-245-255-260-260 Melt extrusion at a temperature of -255°C, and add 15 parts of glass fiber (product model 1000#), 0.1 part of sodium carbonate and 12 parts of flame retardant (decabromodiphenyl ether and Sb 2 o 3 The weight ratio is 4:1), the time of melt extrusion is 30 seconds, after extrusion, it is cooled and pelletized, and then dried in an oven at a...

Embodiment 2

[0058] Slice 100 parts of polyethylene terephthalate (intrinsic viscosity 1dl / g), 3 parts of ultra-fine styrene-butadiene powder rubber (particle size is 50-150 nanometers), 0.5 parts of sodium benzoate, 0.1 parts of anti- Oxygen agent (weight ratio of antioxidant 1010 and antioxidant 168 is 3: 1), 0.5 parts of epoxy soybean oil (epoxy value ≥ 6.0, iodine value ≤ 6.0, chemically pure), 6 parts of brominated epoxy resin ( Brand name BEP-3) and 0.08 parts of phthalic anhydride are put together in a high-speed mixer, stirred at room temperature for 5 minutes, and stirred evenly. Using WP ZSK25 twin-screw, the temperature in each section is 230-245-255-260-260- Melt extrusion at a temperature of 255°C, and add 25 parts of glass fiber (product model 1000#), 0.1 part of sodium carbonate and 10 parts of flame retardant (decabromodiphenyl ether and Sb 2 o 3 The weight ratio is 2:1), the time of melt extrusion is 50 seconds, after extrusion, it is cooled and pelletized, and then dried...

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Abstract

The invention provides a composition containing polyethylene glycol terephthalate. The composition contains 100 parts by weight of polyethylene glycol terephthalate, 0.1-1.5 parts by weight of epoxidized soybean oil, 3-18 parts by weight of a brominated epoxy resin, 0.05-0.3 parts by weight of phthalic anhydride, 0.08-0.6 parts by weight of sodium carbonate, 10-55 parts by weight of a glass fiber, and 0.3-0.7 parts by weight of a nucleating agent. The invention also provides a preparation method of the composition containing polyethylene glycol terephthalate. The processing and injection molding of the composition containing polyethylene glycol terephthalate is easier than that of present PET materials under an increased strength condition.

Description

technical field [0001] The invention relates to a composition containing polyethylene terephthalate and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a multi-purpose polymer material, which is prepared by polycondensation reaction. It has mature technology, wide range of raw materials, and relatively low price. It can be used to prepare fibers and hollow packaging bottles. , can also be used in engineering plastics. As an engineering plastic, the material is required to have higher strength, and the viscosity of the base material PET should be higher. When preparing PET engineering plastics, some reinforcing fillers, flame retardants, etc. should be added, so that during extrusion granulation, the system viscosity is very high, and the temperature needs to be increased to reduce the viscosity, but if the temperature is too high, the PET base material, parts, etc. The additives will be degraded, the torque of the extruder is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L63/00C08K13/04C08K7/14C08K5/1515C08K5/1539C08K3/26C08K5/098C08K5/42
Inventor 尹华张师军邵静波吕芸邹浩徐萌杨庆泉
Owner CHINA PETROLEUM & CHEM CORP
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