充油SEBS的结构、力学性能和紫外辐照稳定性

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充油SEBS的结构、力学性能和紫外辐照稳定性

2023-03-22 08:04| 来源: 网络整理| 查看: 265

关键词

:

苯乙烯

乙烯

/

丁烯

苯乙烯三嵌段共聚物

橡胶填充油

微相结构

力学性能

紫外稳定性

中图分类号

:

TQ325􀆰

 

 

 

文献标识码

:

 

 

 

文章编号

:

1005-5770

(

2021

)

03-0101-05

doi

:

10􀆰

3969

/

j􀆰

issn􀆰

1005-5770􀆰

2021􀆰

03􀆰

021

开放科学

(

资源服务

)

标识码

(

OSID

):

Structure

Mechanical

Properties

and

UV

Stability

of

Oil ̄extended

SEBS

JI

Xiang

WU

Rui

LIU

Jun ̄yi

HU

Bei ̄li

LIU

Yan

LIN

Jian ̄rong

ZHANG

Ai ̄min

WU

Jian ̄xun

(

1.

China

National

Offshore

Oil

Corporation

(

Taizhou

)ꎬ

Taizhou

225300

China

2.

State

Key

Laboratory

of

Polymer

Materials

Engineering

Polymer

Research

Institute

Sichuan

University

Chengdu

610065

China

)

Abstract

:

An

intermediate

group

of

styrene ̄ethylene

/

butylene ̄styrene

triblock

copolymer

(

SEBS

)

elastomer

filler

oil

was

prepared.

The

relationship

among

the

mechanical

properties

UV

radiation

stability

and

structure

of

linear

SEBS

and

star

SEBS

was

studied

from

the

microphase

structure

and

molecular

structure.

Small ̄angle

X ̄ray

scattering

(

SAXS

)

and

transmission

electron

microscopy

(

TEM

)

were

used

to

characterize

the

microstructure.

It

is

revealed

that

the

molecular

structure

of

SEBS

is

the

main

factor

that

affects

the

microphase

structure.

The

greater

the

electron

density

difference

between

the

soft

and

hard

segments

the

PS

phase

size

and

phase

spacing

the

higher

the

degree

of

microphase

separation

of

SEBS

could

be

obtained.

Combining

with

the

test

results

of

the

Instron

material

testing

machine

it

is

found

that

the

high

degree

of

SEBS

microphase

separation

is

beneficial

to

the

improvement

of

the

mechanical

properties

of

the

oil ̄extended

system.

Fourier

transform

infrared

spectroscopy

(

FTIR

)

was

used

to

study

the

chemical

constitution

changes

of

the

system

after

the

irradiation.

The

FTIR

absorption

peaks

appear

around

700

~

740

cm

-1

800

cm

-1

.

The

absorption

peak

intensity

is

large

and

the

mechanical

properties

decrease

quickly

indicating

that

the

unsaturated

carbonyl

group

generated

by

oxidative

degradation

is

the

main

factor

that

causes

the

decrease

of

the

mechanical

properties.

Keywords

:

Styrene ̄ethylene ̄butylene ̄styrene

Triblock

Copolymer

Rubber

Filling

Oil

Microphase

Structure

Mechanical

Properties

Ultraviolet

Stability

由于兼具热塑性塑料的可重复加工性和传统硫化

橡胶的高弹性

热塑性弹性体已经广泛应用于国民经

济的诸多领域

其中

苯乙烯

乙烯

/

丁烯

苯乙烯三

嵌段共聚物

(

SEBS

)

作为一种多用途的新型热塑性

弹性体

是由苯乙烯

丁二烯

苯乙烯三嵌段共聚物

(

SBS

)

高度加氢制得

[

]

不饱和双键经催化加氢后

其耐

[

]

SEBS

性能优异且成本较低

广泛应用于胶黏剂

封材料

制鞋业

高聚物改性

医疗器械

电线电缆

等领域

[

]

SEBS

弹性体熔体黏度大难以加工

[

]

需加入

填充油和聚丙烯

(

PP

)

进行增塑改性

同时调节性

能并降低成本

[

]

目前

国内外研究人员关于填充

油种类

[

]

用量

[

]

SEBS

结构

[

]

等对充油

SEBS

􀅰



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