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Modified polytrimethylene terephthalate resin and preparation method therefor

A technology of polytrimethylene phthalate and polyparaben, which is applied in the field of modified polytrimethylene terephthalate resin and its preparation, can solve the problems of low notched impact strength, limited application of PTT, high notched sensitivity, etc., and can achieve molding Beautiful appearance, excellent impact resistance and high strength

Inactive Publication Date: 2015-08-26
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polytrimethylene terephthalate (PTT), as a new type of polyester polymer material with excellent comprehensive properties, has been widely used in the fields of fibers, films, engineering plastics, etc., but unmodified PTT has low notched impact strength, The defects of high notch sensitivity and easy aging greatly limit the wider application of PTT in various fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A modified polytrimethylene terephthalate resin whose components are proportioned by mass percentage: PTT 75%, reinforcing agent 12%, maleic anhydride grafted ethylene-octene copolymer 8%, HKD-912 3 %, 2-hydroxy-4n-octyloxy-benzophenone 1.5%, antioxidant 1010 0.2%, calcium stearate 0.3%, the PTT is polyterephthalate with an intrinsic viscosity of 0.7~1.5dL / g Propylene glycol formate, the reinforcing agent is a fibrous wollastonite whose surface is modified by a silane coupling agent and has a diameter of 3-30 μm, a length of 10-500 μm, and an aspect ratio of 3-100.

[0017] Preparation method: Weigh the components according to the weight ratio, and add them to the high-speed mixer respectively, and stir them together for 3 to 5 minutes. After the mixing is uniform, the materials are discharged and added to the twin-screw extruder at a temperature of 210°C to 280°C. After melting and mixing, extruding, cooling, granulating and drying, the modified polytrimethylene terephtha...

Embodiment 2

[0019] A modified polytrimethylene terephthalate resin whose components are proportioned by mass percentage: PTT 85%, reinforcing agent 8%, maleic anhydride grafted ethylene-propylene-diene copolymer 5%, HKD- 912 1%, 2,4-dihydroxybenzophenone 0.5%, antioxidant 1076 and antioxidant 168 compound 0.1%, pentaerythritol stearate 0.4%, the PTT is the intrinsic viscosity 0.7~1.5 dL / g of polytrimethylene terephthalate, the reinforcing agent is a surface modified by a silane coupling agent, and the diameter is 3-30μm, the length is 10-500μm and the aspect ratio is within the range of 3-100 Fibrous wollastonite.

[0020] Preparation method: Weigh the components according to the weight ratio, and add them to the high-speed mixer respectively, and stir them together for 3 to 5 minutes. After the mixing is uniform, the materials are discharged and added to the twin-screw extruder at a temperature of 210°C to 280°C. After melting and mixing, extruding, cooling, granulating and drying, the mod...

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Abstract

The invention discloses a modified polytrimethylene terephthalate resin and a preparation method therefor. The modified polytrimethylene terephthalate resin comprises the following ingredients, by weight, 75%-85% of PTT, 8%-12% of reinforcing agents, 4%-8% of flexibilizer, 1%-3% of antistatic agents, 0.5%-2% of light stabilizing agents, 0.1%-0.5% of anti-oxidants and 0.1%-1% of lubricants. The flexibilizer is one of maleic anhydride-graft-ethylene-octene copolymer, maleic anhydride-graft-ethylene-propylene-alkadiene copolymer, maleic anhydride-graft-phenylethylene-ethylene-butadiene-phenylethylene copolymer, glycidyl methacrylate-graft-phenylethylene-ethylene-butadiene-phenylethylene copolymer, glycidyl methacrylate-graft-phenylethylene-butadiene-phenylethylene segmented copolymer. The beneficial effects are that the modified polytrimethylene terephthalate resin has advantages of excellent shock resistance, high intensity, high ageing resistance, good processability, beautiful molding and the like.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a modified polytrimethylene terephthalate resin and a preparation method thereof. Background technique [0002] Polytrimethylene terephthalate (PTT), as a new polyester polymer material with excellent comprehensive performance, has been widely used in fiber, film, engineering plastics and other fields, but unmodified PTT has low notched impact strength, The defects of high notch sensitivity and easy aging greatly limit the wider application of PTT in various fields. Summary of the invention [0003] The purpose of the present invention is to provide a modified polytrimethylene terephthalate resin with good impact resistance, strong aging resistance and convenient processing and a preparation method thereof. [0004] The technical solution adopted by the present invention to solve its technical problems is: modified polytrimethylene terephthalate resin, the components of which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/06C08L51/00C08K13/06C08K9/06C08K3/34C08K5/134C08K5/098C08K5/526C08K5/103
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC
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