CN104861473A

CN104861473A - Core-shell particle toughening PTT polyester and preparation method therefor

Info

Publication number: CN104861473A
Application number: CN201410533665.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: Qingdao Xinzhan Plastic Co Ltd
Current assignee: Qingdao Xinzhan Plastic Co Ltd
Priority date: 2014-10-11
Filing date: 2014-10-11
Publication date: 2015-08-26

Abstract

The invention discloses a core-shell particle toughening PTT polyester and a preparation method therefor. The core-shell particle toughening PTT polyester comprises the following ingredients, by weight, 75%-90% of PTT, 5%-15% of nano calcium carbonate, 5%-10% of elastomers, 0.01%-1% of methacrylic acid, 0.01%-0.05% of initiators, 0.1%-0.5% of anti-oxidants and 0.1%-0.5% of dispersants. The beneficial effects are that nano calcium carbonate are subjected to surface pretreatment, then react with the elastomers, a grafting reaction is carried out, core-shell particles with nano calcium carbonate as cores and with the elastomers as the shells are formed, and toughening modification of the PTT polyester is carried out; thus the toughness of the material is raised greatly, the intensity, the rigidity and the heat resistance of the material are raised well, excellent synergistic toughening and reinforcing effects are achieved; the PTT polyester has advantages of simple preparation technology, low cost, high practicality, good modification effects and the like.

Description

A kind of Toughened With Core-Shell Particles PTT polyester and preparation method thereof

Technical field

The present invention relates to technical field of polymer materials, specifically a kind of Toughened With Core-Shell Particles PTT polyester and preparation method thereof.

Background technology

Poly(Trimethylene Terephthalate) (PTT) is as a kind of new polyester macromolecular material of excellent combination property, the fields such as fiber, film, engineering plastics are widely used at present, but notched Izod impact strength is low, notch sensitivity is large defect that unmodified PTT exists, this greatly limits PTT and applies widely in every field.

Summary of the invention

The object of the present invention is to provide a kind of Toughened With Core-Shell Particles PTT polyester and preparation method thereof.

The technical solution adopted for the present invention to solve the technical problems is: a kind of Toughened With Core-Shell Particles PTT polyester, and its component by mass percent proportioning is: PTT 75% ~ 90%, nano-calcium carbonate 5% ~ 15%, elastomerics 5% ~ 10%, methacrylic acid 0.01% ~ 1%, initiator 0.01% ~ 0.05%, oxidation inhibitor 0.1% ~ 0.5%, dispersion agent 0.1% ~ 0.5%.

Described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g.

Described elastomerics is the one in ethylene-propylene-diene copolymer EPDM, ethylene-octene copolymer POE, styrene-butadiene-styrene block copolymer SBS, styrene-ethylene-butylene-styrene block copolymer SEBS, paracril NBR, thermoplastic polyurethane TPU.

Described initiator is the one in Diisopropyl azodicarboxylate, diethyl azodiformate, isopropyl benzene hydroperoxide, dibenzoyl peroxide, di-isopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate.

Described oxidation inhibitor is the one in the compound of antioxidant 1010, antioxidant 1076, antioxidant 1010 or antioxidant 1076 and irgasfos 168.

Described dispersion agent is the one in calcium stearate, ethylene bis stearic amide, pentaerythritol stearate.

The preparation method of above-mentioned a kind of Toughened With Core-Shell Particles PTT polyester, comprises the following steps:

(1) forced air circulation baking oven, by PTT is placed at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by nano-calcium carbonate at 60 DEG C ~ 80 DEG C temperature dry 30 ~ 45 minutes, stand-by;

(2), take dry nano-calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 60 DEG C ~ 80 DEG C, stir 3 ~ 15 minutes, then spray art is adopted to add the methacrylic acid and initiator that take by weight ratio, stir 10 ~ 45 minutes, add the elastomerics taken by weight ratio again, stir 10 ~ 15 minutes, make the core-shell particles of formation " nano-calcium carbonate-elastomerics ", then discharging is stand-by;

(3) taking dry PTT, by weight ratio adds in high-speed mixer, adds the oxidation inhibitor and dispersion agent that take by weight ratio simultaneously, and adds the product that step (2) obtains, and makes to stir 3 ~ 15 minutes together, discharging after fully mixing;

(4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain a kind of Toughened With Core-Shell Particles PTT polyester of the present invention.

The invention has the beneficial effects as follows, the present invention by after nano-calcium carbonate surface preparation with the interphase interaction of elastomerics and graft reaction occurs, the core-shell particles that formation is core with nano-calcium carbonate, elastomerics is shell carries out toughening modifying to PTT polyester, while making greatly to improve toughness of material, also improve the strength of materials, rigidity and thermotolerance well, to play excellent coordination plasticizing reinforced effects, and have that preparation technology is simple, cost is low, the advantage such as practical and modified effect is good.

Embodiment

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

Embodiment 1:

A kind of Toughened With Core-Shell Particles PTT polyester, its component by mass percent proportioning is: PTT 76%, nano-calcium carbonate 15%, ethylene-propylene-diene copolymer EPDM 8%, methacrylic acid 0.55%, Diisopropyl azodicarboxylate 0.05%, antioxidant 1010 0.1%, calcium stearate 0.3%, and described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g.

Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by nano-calcium carbonate at 60 DEG C ~ 80 DEG C temperature dry 30 ~ 45 minutes, stand-by; (2), take dry nano-calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 60 DEG C ~ 80 DEG C, stir 3 ~ 15 minutes, then spray art is adopted to add the methacrylic acid and Diisopropyl azodicarboxylate that take by weight ratio, stir 10 ~ 45 minutes, add the ethylene-propylene-diene copolymer EPDM taken by weight ratio again, stir 10 ~ 15 minutes, make the core-shell particles of formation " nano-calcium carbonate-EPDM ", then discharging is stand-by; (3), taking dry PTT by weight ratio adds in high-speed mixer, add the antioxidant 1010 and calcium stearate that take by weight ratio simultaneously, and add the product that step (2) obtains, make to stir 3 ~ 15 minutes together, discharging after fully mixing; (4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain a kind of Toughened With Core-Shell Particles PTT polyester of the present invention.

Embodiment 2:

A kind of Toughened With Core-Shell Particles PTT polyester, its component by mass percent proportioning is: the compound 0.1% of PTT 82%, nano-calcium carbonate 10%, ethylene-octene copolymer POE 7.5%, methacrylic acid 0.28%, isopropyl benzene hydroperoxide 0.02%, antioxidant 1076 and irgasfos 168, pentaerythritol stearate 0.1%, and described PTT is the Poly(Trimethylene Terephthalate) of limiting viscosity 0.7 ~ 1.5dL/g.

Preparation method: (1), PTT is placed in forced air circulation baking oven at 110 DEG C ~ 120 DEG C temperature dry 6 ~ 8 hours, by nano-calcium carbonate at 60 DEG C ~ 80 DEG C temperature dry 30 ~ 45 minutes, stand-by; (2), take dry nano-calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 60 DEG C ~ 80 DEG C, stir 3 ~ 15 minutes, then spray art is adopted to add the methacrylic acid and isopropyl benzene hydroperoxide that take by weight ratio, stir 10 ~ 45 minutes, add the ethylene-octene copolymer POE taken by weight ratio again, stir 10 ~ 15 minutes, make the core-shell particles of formation " nano-calcium carbonate-POE ", then discharging is stand-by; (3), taking dry PTT by weight ratio adds in high-speed mixer, add compound, the pentaerythritol stearate of antioxidant 1076 and the irgasfos 168 taken by weight ratio simultaneously, and add the product that step (2) obtains, make to stir 3 ~ 15 minutes together, discharging after fully mixing; (4), the compound of step (3) is added in twin screw extruder, extrudes after melt blending at 180 DEG C ~ 260 DEG C, cooling granulation, then dry, obtain a kind of Toughened With Core-Shell Particles PTT polyester of the present invention.

Claims

1. a Toughened With Core-Shell Particles PTT polyester, it is characterized in that, its component by mass percent proportioning is: PTT 75% ~ 90%, nano-calcium carbonate 5% ~ 15%, elastomerics 5% ~ 10%, methacrylic acid 0.01% ~ 1%, initiator 0.01% ~ 0.05%, oxidation inhibitor 0.1% ~ 0.5%, dispersion agent 0.1% ~ 0.5%.

2. a kind of Toughened With Core-Shell Particles PTT polyester according to claim 1, it is characterized in that, described elastomerics is the one in ethylene-propylene-diene copolymer EPDM, ethylene-octene copolymer POE, styrene-butadiene-styrene block copolymer SBS, styrene-ethylene-butylene-styrene block copolymer SEBS, paracril NBR, thermoplastic polyurethane TPU.

3. a kind of Toughened With Core-Shell Particles PTT polyester according to claim 1, it is characterized in that, described initiator is the one in Diisopropyl azodicarboxylate, diethyl azodiformate, isopropyl benzene hydroperoxide, dibenzoyl peroxide, di-isopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate.

4. the preparation method of a kind of Toughened With Core-Shell Particles PTT polyester according to claim 1, is characterized in that, comprise the following steps: