a grafted sio 2 Preparation method of particle cluster orientation reinforced polyester fiber

A polyester fiber and particle technology, which is applied in the field of preparation of grafted SiO2 particle cluster orientation reinforced polyester fiber, can solve the problems of no reinforcing material, composite fiber without reinforcing fiber, etc.

Active Publication Date: 2017-03-01
ZHEJIANG SCI-TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These nanofiber preparation technologies based on melt spinning have achieved a high degree of orientation of the dispersed phase in the fiber matrix, but their purpose is only to prepare nanofibers on a large scale, so there is no reinforcing material in the dispersed phase, and the fiber matrix phase needs to be dissolved and removed eventually. , so the composite fiber made essentially does not have the effect of reinforcing fiber

Method used

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  • a grafted sio <sub>2</sub> Preparation method of particle cluster orientation reinforced polyester fiber
  • a grafted sio <sub>2</sub> Preparation method of particle cluster orientation reinforced polyester fiber
  • a grafted sio <sub>2</sub> Preparation method of particle cluster orientation reinforced polyester fiber

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Embodiment 1～15

[0053] A kind of grafted SiO 2 The preparation method of particle cluster orientation reinforced polyester fiber includes:

[0054] 100g polyethylene terephthalate chips (PET semi-dull chips produced by Deli Chemical Fiber Co., Ltd., with an intrinsic viscosity of 0.678) were vacuum dried at 125°C for 8 hours to obtain dried polyethylene terephthalate Slice particles, control the water mass fraction at 2×10 -7 the following;

[0055] PMMA / SiO 2 Grafted composite microspheres (powder, Polymer, 2006, 47: 4622~4629, pomegranate-shaped, pomegranate-shaped microspheres consist of multiple nano-SiO 2 The particles are encapsulated in a polymethyl methacrylate latex particle, and they are interconnected by PMMA graft chains between the particles.) Dry under vacuum at 125°C for 8 hours to obtain dried PMMA / SiO 2 Grafted composite microspheres, control the water mass fraction at 2×10 -7 the following;

[0056] The dried polyethylene terephthalate chip pellets and dried PMMA / SiO 2 After the gr...

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Abstract

The invention discloses a preparation method of grafted SiO2 particle cluster orientation reinforced polyester fiber. The method comprises the steps of carrying out vacuum drying on a polyethylene terephthalate (PET) chip and pomegranate-shaped polymethyl methacrylate (PMMA) / SiO2 graft composite microspheres; mixing the dried PET chip granules and the dried PMMA / SiO2 graft composite microsphere powder, feeding the mixture into a melt spinning machine, and carrying out melt extrusion; cooling, oiling, and carrying out spinning draft in a drawing machine to obtain the grafted SiO2 particle cluster orientation reinforced polyester fiber. According to the method, the grafted SiO2 particle clusters in the composite microspheres are sequentially arranged and regularly oriented along the axial direction of the fiber and the oriented SiO2 particles are connected front and back by carrying out melt blending, extrusion and drawing on the composite microspheres and polyester PET resin in the melt spinning machine and a spinning draft machine, so that a beam-shaped arrangement structure which takes the SiO2 particles as crosslinking points and PMMA graft chains as connecting lines can be built in PET fiber, and the polyester fiber finally has better mechanical strength.

Description

Technical field [0001] The invention relates to the production field of reinforcing fibers, in particular to a grafted SiO 2 Preparation method of particle cluster orientation reinforced polyester fiber. Background technique [0002] The orientation filling of one-dimensional materials in micron-level chemical fibers to give them new mechanical, electrical and magnetic effects is an important proposition in fiber modification. High-strength and high-conductivity fibers such as carbon nanotubes and carbon fibers are the first one-dimensional materials to be selected. However, regardless of whether they are modified or not, it is difficult for these fibers to disperse in the melt. A small amount of addition will dramatically increase the viscosity of the composite system. It is difficult to form. Therefore, Li Zhongming and Guo Shaoyun of Sichuan University (Chinese J Polym Sci, 2013, 31(2): 211~217; J Mater Sci, 2013, 48: 1214~1224) combined carbon nanotubes, carbon black, and Ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01D5/08D01D5/12
Inventor 戚栋明陈智杰王振曹志海
Owner ZHEJIANG SCI-TECH UNIV
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