废旧涤纶、涤棉纺织品化学回收工艺技术研究
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The glycolysis products were analysed by different techniques,such
as
1H
NMR and
was found that the glycolysis products consist mainly of BHET monomer.After being treated by the glycolysis process,the surface of cotton fiber in blend fabric become rough and its
原创性声明
本人郑重声明:所呈交的学位论文是本人在导师的指导下独立进行研究工作所取得的
成果,论文中有关资料和数据是实事求是的。除文中已经注明引用的内容外,本论文不含 任何其他个人或集体已经发表或撰写过的研究成果。对本文的研究做出重要贡献的个人和
集体,均已在文中以明确方式标明。 若有不实之处,本人愿意承担相关法律责任。
by ubbelohde viscometer,gas chromatography,potentiometric titration
and
DSC respectively.
The results showed that,the final PET with higher intrinsic viscosity
the PLA to prevent the used
uniforms from
tens of
flowing into the society.It is reported that the annual returned uniforms exceed of tons which exerts great pressure onto the
In this work,polyester textile waste of low bulk density were firstly
thermal
condensed
and
the glycolysis process of the condensed textile waste was carried out using ethylene degradation agent.Systematic studies were carried out by
量、端羧基含量进行了测定;采用DSC测定了所得PET的熔点、玻璃化转变温度、冷 结晶温度等性能。 研究结果表明,PET:EG质量比为10:1时所得再生PET特性粘数较高、热性能最佳; 265*C为最佳醇解温度,醇解温度过高易发生副反应;在保证产物性能的前提下可缩短 醇解时间;乙酸锌的存在会加速逆反应,不利于聚合反应的进行。
AB STRACT
According to‘‘The Uniform Management Regulations”issued by the central military
committee,retired soldiers must rum and submit their uniforms
to
glycol(EG)as
parameters
as
changing
such
mass ratio of PET to EG reaction time
and
reaction temperature,catalyst type
and concentration.The extent of reaction Was studied by determining the present in reaction
thousands
on
uniform
storages.Therefore,the
research
the recycling of the polyester or polyester/cotton blend uniform fabrics is of great
theoretical and practical significances.
sodium
carbonate was the best.The values of the activation energy
62.85KJ/mol(terylene
derived. DSC.It
ZnAC2),82.06KJ/mol(terylene Na2C03),55.2KJ/mol(polyester—cotton ZnAC2)were
and
good thermal
performance Was
prepared when the mass ratio of PET:EG was 1 0:1.The optimal reaction
temperature was 265"C,the degree of side reaction will increase when temperature beyond this value.It is suggested that the reaction time should be short if the quality of the product
mwk.baidu.comchanical
properties showed
a
large decline.
as
In this thesis,PET thermal condensed uniform waste was used
raw materials
and
the
“partial-degradation—polymerization process PDPP”was studied by adding EG with less
cotton fiber separated from the blend fabric which undergone
glycolysis process was also
tested. The results showed that bulk density
thermal
condensation by solid phase extrusion could increase the
学位论文作者签名:别传彪
日期:
力叼上年“月//日
学位论文版权使用授权书
学位论文作者完全了解北京服装学院有关保留和使用学位论文的规定,即:研究生在 校攻读学位期间论文工作的知识产权单位属北京服装学院。学校有权保留并向国家有关部 门或机构送交论文的复印件和电子版,允许学位论文被查阅、借阅和复印;学校可以将学 位论文的全部或部分内容公开或编入有关数据库进行检索,可以允许采用影印、缩印或其
reaction time and reaction temperature.The intrinsic viscosity,diethylene carboxyl end group
glycol(DEG),
and
thermal properties such
as
Tg,Tm of the prepared PET were tested
EG/PET was 2.5 and amount of catalyst was 0.3%of PET.Among the four degradation
III
catalysts namely zinc acetate,sodium carbonate,potassium acetate,magnesium chloride,
and
reaction temperature,reaching tO certain value and
no
obvious change was
found
beyond.The
optimal reaction time was l hr,temperature was 1 96"C,mass ratio of
它复制手段保存、汇编学位论文。 保密的学位论文在解密后适用本授权书。
学位论文作者签名:
列传昆
日期:耖f2年f 7月/厂日
导师签名
日期:纱/五年,/月/易曰
甥期
废旧涤纶、涤棉纺织品化学回收工艺技术研究 摘要
为防止军服流入社会,2007年中央军委颁发《军服管理条例》,规定退役士兵07 式制服全部上交。据统计,每年收缴退役被装数万吨,造成巨大库存压力。本课题以废 旧涤纶、涤棉军装为原料开展对废旧聚酯纺织品的回收再利用技术研究,对缓解当前军 装库存压力以及相应技术未来在民用纺织品回收过程中的推广和应用具有重要的学术 和社会意义。 本文采用乙二醇(EG)醇解方法进行废旧军装回收工艺研究。研究了蓬松聚酯纺 织品半熔融挤出致密化处理工艺,并以上述致密化处理后废旧军装为原料,研究了乙二 醇/废旧军装比、催化剂、温度、时间等因素对产物质量、醇解速度的影响;通过测定降 解所得对苯二甲酸乙二酯(BHET)质量,计算得到降解率,并依此进行了醇解动力学 研究;采用DSC及1H NMR等手段,对醇解产物的结构进行了表征;采用TGA、SEM 等手段研究了涤棉军装醇解前后棉纤维结构的变化。 实验结果表明,半熔融挤出致密化的方法可在不过多降低聚酯纺织品分子量的条件 下有效解决纺织品堆密度小、醇解再聚合操作难度大的问题;随着醇解时间、醇解温度、 PET:EG质量比的增大,醇解程度增大,上述各参数达到一定程度后醇解程度基本不变; 在本研究条件下所获得的最佳醇解工艺为PET:EG质量比1:2.5,催化剂用量为PET质 量的0.3%,醇解温度196℃,醇解时间1h;在乙酸锌、碳酸钠、乙酸钾、氯化镁四种 催化剂中,碳酸钠综合催化效果最佳;在以乙酸锌作为催化剂的条件下,涤纶、涤棉醇
and
had
no
obvious change in the properties
and structure
of the fabric.The
glycolyfic degree was increased along with the increase of the mass ratio of PET to EG, reaction time
amount
than
required for complete PET degradation
and
then re-polymerization.Systematic such
as
experiments were conducted by changing the
parameters
mass ratio of PET/EG,
解反应活化能分别为62.85KJ/mol和55.2KJ/mol,以碳酸钠作为催化剂的条件下涤纶醇
解反应活化能为83.06KJ/mol;DSC及1H NMR测试结果表明,醇解产物主要为BHET 单体;经醇解过程后,混纺织物中棉纤维表面变得粗糙,力学性能有较大下降。
另外,本文以经致密化处理后的废旧聚酯军装为原料,在添加使PET非完全降解量 EG的条件下,通过改变PET:EG配比、醇解温度、醇解时间、醇解催化剂等一系列实 验参数进行了PET“半降解增粘”实验,对增粘后PET的特性粘数、二甘醇(DEG)含
关键词:废旧涤纶纺织品;废旧涤棉纺织品:化学回收;醇解;醇解动力学;半降解增
粘。
II
STUDY ON THE
CHEMICAL RECYCLING TECHNOLOGY OF
THE POST.CONSUM匝R POLYESTER AND POLYESTER COTTON BLEND FABIUC S
are
assured.Exceeded reaction time did
not help to increasing to
the molecular weight and the
reversed reaction,which is
addition of Zn containing catalyst tended unfavorable to the polymerization reaction.
amount
of BHET scanning
mixture.The
monomer was
characterized by
differential
calorimetry(DSC)and
nuclear magnetic
resonance(NMR).The the
structure and properties of
as
1H
NMR and
was found that the glycolysis products consist mainly of BHET monomer.After being treated by the glycolysis process,the surface of cotton fiber in blend fabric become rough and its
原创性声明
本人郑重声明:所呈交的学位论文是本人在导师的指导下独立进行研究工作所取得的
成果,论文中有关资料和数据是实事求是的。除文中已经注明引用的内容外,本论文不含 任何其他个人或集体已经发表或撰写过的研究成果。对本文的研究做出重要贡献的个人和
集体,均已在文中以明确方式标明。 若有不实之处,本人愿意承担相关法律责任。
by ubbelohde viscometer,gas chromatography,potentiometric titration
and
DSC respectively.
The results showed that,the final PET with higher intrinsic viscosity
the PLA to prevent the used
uniforms from
tens of
flowing into the society.It is reported that the annual returned uniforms exceed of tons which exerts great pressure onto the
In this work,polyester textile waste of low bulk density were firstly
thermal
condensed
and
the glycolysis process of the condensed textile waste was carried out using ethylene degradation agent.Systematic studies were carried out by
量、端羧基含量进行了测定;采用DSC测定了所得PET的熔点、玻璃化转变温度、冷 结晶温度等性能。 研究结果表明,PET:EG质量比为10:1时所得再生PET特性粘数较高、热性能最佳; 265*C为最佳醇解温度,醇解温度过高易发生副反应;在保证产物性能的前提下可缩短 醇解时间;乙酸锌的存在会加速逆反应,不利于聚合反应的进行。
AB STRACT
According to‘‘The Uniform Management Regulations”issued by the central military
committee,retired soldiers must rum and submit their uniforms
to
glycol(EG)as
parameters
as
changing
such
mass ratio of PET to EG reaction time
and
reaction temperature,catalyst type
and concentration.The extent of reaction Was studied by determining the present in reaction
thousands
on
uniform
storages.Therefore,the
research
the recycling of the polyester or polyester/cotton blend uniform fabrics is of great
theoretical and practical significances.
sodium
carbonate was the best.The values of the activation energy
62.85KJ/mol(terylene
derived. DSC.It
ZnAC2),82.06KJ/mol(terylene Na2C03),55.2KJ/mol(polyester—cotton ZnAC2)were
and
good thermal
performance Was
prepared when the mass ratio of PET:EG was 1 0:1.The optimal reaction
temperature was 265"C,the degree of side reaction will increase when temperature beyond this value.It is suggested that the reaction time should be short if the quality of the product
mwk.baidu.comchanical
properties showed
a
large decline.
as
In this thesis,PET thermal condensed uniform waste was used
raw materials
and
the
“partial-degradation—polymerization process PDPP”was studied by adding EG with less
cotton fiber separated from the blend fabric which undergone
glycolysis process was also
tested. The results showed that bulk density
thermal
condensation by solid phase extrusion could increase the
学位论文作者签名:别传彪
日期:
力叼上年“月//日
学位论文版权使用授权书
学位论文作者完全了解北京服装学院有关保留和使用学位论文的规定,即:研究生在 校攻读学位期间论文工作的知识产权单位属北京服装学院。学校有权保留并向国家有关部 门或机构送交论文的复印件和电子版,允许学位论文被查阅、借阅和复印;学校可以将学 位论文的全部或部分内容公开或编入有关数据库进行检索,可以允许采用影印、缩印或其
reaction time and reaction temperature.The intrinsic viscosity,diethylene carboxyl end group
glycol(DEG),
and
thermal properties such
as
Tg,Tm of the prepared PET were tested
EG/PET was 2.5 and amount of catalyst was 0.3%of PET.Among the four degradation
III
catalysts namely zinc acetate,sodium carbonate,potassium acetate,magnesium chloride,
and
reaction temperature,reaching tO certain value and
no
obvious change was
found
beyond.The
optimal reaction time was l hr,temperature was 1 96"C,mass ratio of
它复制手段保存、汇编学位论文。 保密的学位论文在解密后适用本授权书。
学位论文作者签名:
列传昆
日期:耖f2年f 7月/厂日
导师签名
日期:纱/五年,/月/易曰
甥期
废旧涤纶、涤棉纺织品化学回收工艺技术研究 摘要
为防止军服流入社会,2007年中央军委颁发《军服管理条例》,规定退役士兵07 式制服全部上交。据统计,每年收缴退役被装数万吨,造成巨大库存压力。本课题以废 旧涤纶、涤棉军装为原料开展对废旧聚酯纺织品的回收再利用技术研究,对缓解当前军 装库存压力以及相应技术未来在民用纺织品回收过程中的推广和应用具有重要的学术 和社会意义。 本文采用乙二醇(EG)醇解方法进行废旧军装回收工艺研究。研究了蓬松聚酯纺 织品半熔融挤出致密化处理工艺,并以上述致密化处理后废旧军装为原料,研究了乙二 醇/废旧军装比、催化剂、温度、时间等因素对产物质量、醇解速度的影响;通过测定降 解所得对苯二甲酸乙二酯(BHET)质量,计算得到降解率,并依此进行了醇解动力学 研究;采用DSC及1H NMR等手段,对醇解产物的结构进行了表征;采用TGA、SEM 等手段研究了涤棉军装醇解前后棉纤维结构的变化。 实验结果表明,半熔融挤出致密化的方法可在不过多降低聚酯纺织品分子量的条件 下有效解决纺织品堆密度小、醇解再聚合操作难度大的问题;随着醇解时间、醇解温度、 PET:EG质量比的增大,醇解程度增大,上述各参数达到一定程度后醇解程度基本不变; 在本研究条件下所获得的最佳醇解工艺为PET:EG质量比1:2.5,催化剂用量为PET质 量的0.3%,醇解温度196℃,醇解时间1h;在乙酸锌、碳酸钠、乙酸钾、氯化镁四种 催化剂中,碳酸钠综合催化效果最佳;在以乙酸锌作为催化剂的条件下,涤纶、涤棉醇
and
had
no
obvious change in the properties
and structure
of the fabric.The
glycolyfic degree was increased along with the increase of the mass ratio of PET to EG, reaction time
amount
than
required for complete PET degradation
and
then re-polymerization.Systematic such
as
experiments were conducted by changing the
parameters
mass ratio of PET/EG,
解反应活化能分别为62.85KJ/mol和55.2KJ/mol,以碳酸钠作为催化剂的条件下涤纶醇
解反应活化能为83.06KJ/mol;DSC及1H NMR测试结果表明,醇解产物主要为BHET 单体;经醇解过程后,混纺织物中棉纤维表面变得粗糙,力学性能有较大下降。
另外,本文以经致密化处理后的废旧聚酯军装为原料,在添加使PET非完全降解量 EG的条件下,通过改变PET:EG配比、醇解温度、醇解时间、醇解催化剂等一系列实 验参数进行了PET“半降解增粘”实验,对增粘后PET的特性粘数、二甘醇(DEG)含
关键词:废旧涤纶纺织品;废旧涤棉纺织品:化学回收;醇解;醇解动力学;半降解增
粘。
II
STUDY ON THE
CHEMICAL RECYCLING TECHNOLOGY OF
THE POST.CONSUM匝R POLYESTER AND POLYESTER COTTON BLEND FABIUC S
are
assured.Exceeded reaction time did
not help to increasing to
the molecular weight and the
reversed reaction,which is
addition of Zn containing catalyst tended unfavorable to the polymerization reaction.
amount
of BHET scanning
mixture.The
monomer was
characterized by
differential
calorimetry(DSC)and
nuclear magnetic
resonance(NMR).The the
structure and properties of