CN105111568A - 一种低密度聚乙烯再生料的改性 - Google Patents

一种低密度聚乙烯再生料的改性 Download PDF

Info

Publication number
CN105111568A
CN105111568A CN201510632361.2A CN201510632361A CN105111568A CN 105111568 A CN105111568 A CN 105111568A CN 201510632361 A CN201510632361 A CN 201510632361A CN 105111568 A CN105111568 A CN 105111568A
Authority
CN
China
Prior art keywords
density polyethylene
modification
low
reworked material
reclaimed material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510632361.2A
Other languages
English (en)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201510632361.2A priority Critical patent/CN105111568A/zh
Publication of CN105111568A publication Critical patent/CN105111568A/zh
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/20—Recycled plastic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

本发明涉及一种低密度聚乙烯再生料的改性，以聚乙烯蜡作为改性助剂，熔融状态下，融到再生料中。具体改性方法为，将低密度聚乙烯再生料和润滑剂按照质量比100：40~100：30混合均匀，经双螺杆挤出机挤出，螺杆10段的温度分别为螺杆10段温度分别为110~120℃、170~190℃、170~190℃、180~190℃、180~190℃、180~190℃、180~190℃、180~200℃、180~190℃、180~190℃，螺杆转速为30~50转/分钟。本发明提供的一种低密度聚乙烯再生料的改性可以促进聚合物大分子链或链段相对运动，减少聚合物分子链间的摩擦力，降低熔融黏度，从而改善物料的加工流动性。

Description

一种低密度聚乙烯再生料的改性
技术领域
本发明涉及高分子聚合物的改性领域，具体涉及一种低密度聚乙烯再生料的改性。
背景技术
聚乙烯再生料由于受使用环境和再加工条件的制约，加工流动性能会有一定程度的降低，加工时的流动性能和脱模性能都不如新料。随着塑料加工向自动化、高速化的方向发展，塑料材料在加工过程中受到剪切与摩擦作用不断加剧，再生料对机器的磨损较新料更严重，所以再生料在使用时，可以加入某些加工助剂来改善再生料的加工性能。润滑剂是普遍使用的一类可以改善塑料特别是热塑性塑料加工流动性能的助剂。润滑剂的主要作用是降低塑料材料与加工机械之间和塑料材料内部分子之间的相互摩擦。润滑剂的润滑作用的好坏和作用机理主要取决于他们与树脂相容性的好坏，而相容性又取决于他们的极性。分子结构相似，极性相似，相容性就大。
基于低密度聚乙烯再生料的性能分析，可知再生料的加工流动性能有很大程度的降低。
发明内容
本发明就是针对低密度聚乙烯再生料的加工流动性能有很大程度的降低问题，提供了一种低密度聚乙烯再生料的改性方法。聚乙烯蜡作为常用润滑剂，和聚乙烯再生料具有相似的结构，本发明选用聚乙烯蜡作为低密度聚乙烯再生料的改性助剂，聚乙烯蜡加入到再生料中，在熔融状态下，可以融到再生料中，促进聚合物大分子链或链段相对运动，减少聚合物分子链间的摩擦力，降低熔融黏度，从而改善物料的加工流动性。具体改性方法为，将低密度聚乙烯再生料和润滑剂按照质量比100：40~100：30混合均匀，经双螺杆挤出机挤出，螺杆10段的温度分别为螺杆10段温度分别为110~120℃、170~190℃、170~190℃、180~190℃、180~190℃、180~190℃、180~190℃、180~200℃、180~190℃、180~190℃，螺杆转速为30~50转/分钟。
所述的润滑剂为聚乙烯蜡。
所述的润滑剂和再生料的预混方法为在高速混合机中混合，混合时间为5~8分钟。
有益效果
本发明提供的低密度聚乙烯再生料的改性方法可以促进聚合物大分子链或链段相对运动，减少聚合物分子链间的摩擦力，降低熔融黏度，从而改善物料的加工流动性。
具体实施方式
试验材料及主要试验设备
低密度聚乙烯再生料(RLDPE)，粒料，密度为0.9316g/cm3，熔体流动速率为0.33g/l0min，莱州市沙河镇玉马塑料颗粒购销处；
聚乙烯蜡(PEW)，RLC-657，美国Honeywell公司；
平行双螺杆挤出机，HAAKERheomexPTW16/40，德国哈克公司；
微型注塑机，RR/TSMP/134，LTD公司；
旋转流变仪，HAAKEMARS，德国哈克公司。
实施例1
将质量比为100：40的再生料和聚乙烯蜡在高速混合机中预混，预混时间5分钟，然后将预混后的物料倒入双螺杆挤出机进行挤出，螺杆10段温度分别设为120℃、180℃、180℃、190℃、190℃、190℃、190℃、185℃、190℃、190℃，螺杆转速35转/分钟。将挤出的样条冷却造粒。通过微型注塑机，把改性后的共混物注塑成测量拉伸要求的标准哑铃状样条和测量弯曲要求的标准长方形样条。
把再生料注塑成2cm×lmm的圆片，通过HAAKE旋转流变仪测试试样的流变性能，测试模式选为“振荡测试”。录试样的复数黏度(η*)、储能模量（G'）和损耗模量(G〞)随剪切频率和温度的变化情况。频率扫描：测试温度为130℃，剪切频率为10rad/s，应变为1%，平行板直径为20mm，间距1mm，测得的复数黏度为976Pa·S，储能模量为43420Pa，损耗模量为43360Pa。
温度扫描：温度170℃，升温速率5℃/min，应变5%，频率1Hz，平行板直径为20mm，间距1mm。测得的复数黏度为2100Pa·S，储能模量为7503Pa，损耗模量为10466Pa。
由以上实施例可以看出，本发明提供的低密度聚乙烯再生料的改性方法，可以使低密度聚乙烯再生料的复数黏度、储能模量以及损耗模量都大为降低，使再生料的加工流动性能增强。

Claims (3)

1.一种低密度聚乙烯再生料的改性，其特征在于：将低密度聚乙烯再生料和润滑剂按照质量比100：40~100：30混合均匀，经双螺杆挤出机挤出，螺杆10段的温度分别为螺杆10段温度分别为110~120℃、170~190℃、170~190℃、180~190℃、180~190℃、180~190℃、180~190℃、180~200℃、180~190℃、180~190℃，螺杆转速为30~50转/分钟。
2.按照权利要求1所述的一种低密度聚乙烯再生料的改性，其特征在于：所述的润滑剂为聚乙烯蜡。
3.按照权利要求1所述的一种低密度聚乙烯再生料的改性，其特征在于：所述的润滑剂和再生料的预混方法为在高速混合机中混合，混合时间为5~8分钟。
CN201510632361.2A 2015-09-29 2015-09-29 一种低密度聚乙烯再生料的改性 Pending CN105111568A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510632361.2A CN105111568A (zh) 2015-09-29 2015-09-29 一种低密度聚乙烯再生料的改性

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510632361.2A CN105111568A (zh) 2015-09-29 2015-09-29 一种低密度聚乙烯再生料的改性

Publications (1)

Publication Number Publication Date
CN105111568A true CN105111568A (zh) 2015-12-02

Family

ID=54659700

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510632361.2A Pending CN105111568A (zh) 2015-09-29 2015-09-29 一种低密度聚乙烯再生料的改性

Country Status (1)

Country Link
CN (1) CN105111568A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108884264A (zh) * 2016-03-24 2018-11-23 绿色颂歌再生科技有限公司 作为用于聚合物的熔体流动改性剂和加工助剂的蜡

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108884264A (zh) * 2016-03-24 2018-11-23 绿色颂歌再生科技有限公司 作为用于聚合物的熔体流动改性剂和加工助剂的蜡

Similar Documents

Publication Publication Date Title
CN104045901B (zh) 超高分子量聚乙烯组合物及生产该组合物管材的工艺方法
Hamad et al. Effect of recycling on rheological and mechanical properties of poly (lactic acid)/polystyrene polymer blend
CN104861676B (zh) 废旧高聚物基沥青混合料综合改性剂及其制备方法与应用
WO2006003309A1 (fr) Procede de preparation d’un melange bitume-polymere
CN107216517B (zh) 一种超高分子量聚乙烯3d打印耗材的制备方法
Korol et al. Manufacture and research of TPS/PE biocomposites properties
CN103059415A (zh) 一种针状硅灰石改性聚丙烯复合材料及其制备方法
Jia et al. Novel dynamic elongational flow procedure for reinforcing strong, tough, thermally stable polypropylene/thermoplastic polyurethane blends
CN108219287A (zh) 一种低翘曲高抗冲长纤维增强聚丙烯复合材料及其制备方法
Singh et al. Jute fiber-reinforced chemically functionalized high density polyethylene (JF/CF-HDPE) composites with in situ fiber/matrix interfacial adhesion by Palsule Process
CN102320117B (zh) 一种玻纤增强as树脂的制备方法
CN105237943B (zh) 一种刚性增强聚甲醛复合材料及其制备方法
Krache et al. Binary and ternary blends of polyethylene, polypropylene, and polyamide 6, 6: The effect of compatibilization on the morphology and rheology
CN106700519A (zh) 一种pa‑pp合金及其制备方法
CN105504495A (zh) 一种聚丙烯用低voc环保型高效润滑剂的制备方法
CN105111568A (zh) 一种低密度聚乙烯再生料的改性
CN103013099A (zh) 一种高流动性长玻纤增强尼龙6材料及其制备方法
Ong et al. Recycling of polylactic acid (PLA) wastes from 3D printing laboratory
CN101733856B (zh) 一种改性超高分子量聚乙烯阻燃管材的制备方法
CN104387662A (zh) 一种低成本耐刮擦pp/pet合金材料及其制备方法
CN104098833A (zh) 一种用于聚丙烯的抗氧耐热母粒及其制备方法
CN105061868A (zh) 一种低密度聚乙烯再生料的改性方法
CN101967271A (zh) 短碳纤维增强抗静电聚乳酸复合材料及其制备方法
Chaudry et al. Fabrication and characterization of PLA/PP/ABS ternary blend
CN105038159B (zh) 含反应性大分子型成核剂的聚乳酸复合材料及其制备方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20151202

WD01 Invention patent application deemed withdrawn after publication