CN109333953A - 一种改性淀粉/pbs共混材料的制备方法 - Google Patents

一种改性淀粉/pbs共混材料的制备方法 Download PDF

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CN109333953A
CN109333953A CN201811115573.3A CN201811115573A CN109333953A CN 109333953 A CN109333953 A CN 109333953A CN 201811115573 A CN201811115573 A CN 201811115573A CN 109333953 A CN109333953 A CN 109333953A
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pbs
starch
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Taicang European Classic New Materials Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B29B7/005—Methods for mixing in batches
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2403/00—Use of starch or derivatives as filler
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2467/00—Use of polyesters or derivatives thereof as filler

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Cosmetics (AREA)

Abstract

本发明公开了一种改性淀粉/PBS共混材料的制备方法，步骤如下：将淀粉和PBS置于100‑104℃的真空烘箱中干燥6‑7h以烘干水分；将淀粉、PBS、［BMIM］Cl离子液体和氯化镁于转矩流变仪中进行熔融共混，共混温度为110‑120℃，共混转子转速65r/min，共混时间为15‑25min；然后采用微型注塑机将样品制备成4mm宽的哑铃型，注塑压力为37‑39MPa，注塑温度为110‑120℃，保压压力37‑39MPa，模具温度30‑34℃，夹具间距41‑43mm，拉伸速率44‑46mm/min，冷却即得。该方法简便、易操作，制备的改性淀粉/PBS共混材料具有良好的力学性能，可大规模制备。

Description

一种改性淀粉/PBS共混材料的制备方法
技术领域
本发明涉及一种改性淀粉/PBS共混材料的制备方法。
背景技术
开发可生物降解高分子材料是解决塑料“白色污染”问题的有效方法。在包括聚乳酸（PLA）、聚己内酯（PCL）及聚（3-羟基丁酸酯）（PHB）在内的可生物降解脂肪族聚酯中，聚丁二酸丁二醇酯(PBS)由于具有优异的综合性能及良好的工业化前景，成为发展最快的品种之一。相比于其它的生物可降解聚酯，PBS在生物降解性、可加工性、热性能和化学稳定性等方面具有优异的性能，可通过非石油路线制备，是新型环保材料。PBS具有优良的力学性能、耐热性能和加工性能，但存在成本较高、结晶度高及脆性大等问题。淀粉是自然界来源最丰富的天然高分子化合物，可完全生物降解，已成为主要的绿色化工基础原材料。淀粉生物降解性好，但强度低、耐水性差、热稳定性低、缺乏熔融流动性，难以单独作为高分子材料使用。将淀粉与PBS共混并经适当改性，可望获得性能良好的环境友好材料，这已成为研制可完全生物降解材料的热点。但PBS与淀粉相容性差，需通过改性才能获得具有良好性能的淀粉/PBS共混材料。改善淀粉/PBS共混物性能的常用方法是加入增塑剂，使淀粉结构无序化而成为热塑性淀粉，以提高淀粉与PBS的相容性。目前使用的增塑剂包括乙二醇、甘油及山梨醇等多元醇；尿素、甲酰胺及乙醇胺等含氮化合物；糠醛、二甲亚砜及以羟基增塑剂、氨基增塑剂为主体的复合剂或柠檬酸等含羟基或羧基的有机化合物及其复配物等。上述物质通过氢键与淀粉作用可以改变聚合物聚集态结构，改善淀粉与PBS的相容性，提高淀粉/PBS共混物的性能。但目前采用的增塑剂改性效果有限，增塑剂易从淀粉基体中迁移，相应体系中淀粉与PBS的相容性有限、共混材料性能不理想。
发明内容
本发明的目的在于提供一种改性淀粉/PBS共混材料的制备方法。
本发明通过下面技术方案实现：
一种改性淀粉/PBS共混材料的制备方法，包括如下步骤：将淀粉和PBS置于100-104℃的真空烘箱中干燥6-7h以烘干水分；将15-25份淀粉、25-35份PBS、5-7份［BMIM］Cl离子液体和2-4份氯化镁于转矩流变仪中进行熔融共混，共混温度为110-120℃，共混转子转速65r/min，共混时间为15-25min；然后采用微型注塑机将样品制备成4mm宽的哑铃型，注塑压力为37-39MPa，注塑温度为110-120℃，保压压力37-39MPa，模具温度30-34℃，夹具间距41-43mm，拉伸速率44-46mm/min，冷却即得；各原料均为重量份。
优选地，所述的制备方法中，将淀粉和PBS置于102℃的真空烘箱中干燥6.5h以烘干水分。
优选地，所述的制备方法中，共混温度为115℃。
优选地，所述的制备方法中，共混时间为20min。
优选地，所述的制备方法中，注塑压力为38MPa。
优选地，所述的制备方法中，注塑温度为115℃。
优选地，所述的制备方法中，模具温度32℃。
优选地，所述的制备方法中，夹具间距42mm。
优选地，所述的制备方法中，拉伸速率45mm/min。
本发明技术效果：
该方法简便、快捷、易操作，制备的改性淀粉/PBS共混材料具有良好的力学性能，可大规模制备。
具体实施方式
下面结合实施例具体介绍本发明的实质性内容。
实施例1
一种改性淀粉/PBS共混材料的制备方法，包括如下步骤：将淀粉和PBS置于102℃的真空烘箱中干燥6.5h以烘干水分；将10份淀粉、30份PBS、6份［BMIM］Cl离子液体和3份氯化镁于转矩流变仪中进行熔融共混，共混温度为105℃，共混转子转速65r/min，共混时间为20min；然后采用微型注塑机将样品制备成4mm宽的哑铃型，注塑压力为38MPa，注塑温度为115℃，保压压力38MPa，模具温度32℃，夹具间距42mm，拉伸速率45mm/min，冷却即得；各原料均为重量份。
实施例2
一种改性淀粉/PBS共混材料的制备方法，包括如下步骤：将淀粉和PBS置于100℃的真空烘箱中干燥6h以烘干水分；将15份淀粉、25份PBS、5份［BMIM］Cl离子液体和2份氯化镁于转矩流变仪中进行熔融共混，共混温度为110℃，共混转子转速65r/min，共混时间为15min；然后采用微型注塑机将样品制备成4mm宽的哑铃型，注塑压力为37MPa，注塑温度为110℃，保压压力37MPa，模具温度30℃，夹具间距41mm，拉伸速率44mm/min，冷却即得；各原料均为重量份。
实施例3
一种改性淀粉/PBS共混材料的制备方法，包括如下步骤：将淀粉和PBS置于104℃的真空烘箱中干燥7h以烘干水分；将25份淀粉、35份PBS、7份［BMIM］Cl离子液体和4份氯化镁于转矩流变仪中进行熔融共混，共混温度为120℃，共混转子转速65r/min，共混时间为25min；然后采用微型注塑机将样品制备成4mm宽的哑铃型，注塑压力为39MPa，注塑温度为120℃，保压压力39MPa，模具温度34℃，夹具间距43mm，拉伸速率46mm/min，冷却即得；各原料均为重量份。
该方法简便、快捷、易操作，制备的改性淀粉/PBS共混材料具有良好的力学性能，可大规模制备。

Claims (9)

1.一种改性淀粉/PBS共混材料的制备方法，其特征在于包括如下步骤：将淀粉和PBS置于100-104℃的真空烘箱中干燥6-7h以烘干水分；将15-25份淀粉、25-35份PBS、5-7份［BMIM］Cl离子液体和2-4份氯化镁于转矩流变仪中进行熔融共混，共混温度为110-120℃，共混转子转速65r/min，共混时间为15-25min；然后采用微型注塑机将样品制备成4mm宽的哑铃型，注塑压力为37-39MPa，注塑温度为110-120℃，保压压力37-39MPa，模具温度30-34℃，夹具间距41-43mm，拉伸速率44-46mm/min，冷却即得；各原料均为重量份。
2.根据权利要求1所述的制备方法，其特征在于：将淀粉和PBS置于102℃的真空烘箱中干燥6.5h以烘干水分。
3.根据权利要求1所述的制备方法，其特征在于：共混温度为115℃。
4.根据权利要求1所述的制备方法，其特征在于：共混时间为20min。
5.根据权利要求1所述的制备方法，其特征在于：注塑压力为38MPa。
6.根据权利要求1所述的制备方法，其特征在于：注塑温度为115℃。
7.根据权利要求1所述的制备方法，其特征在于：模具温度32℃。
8.根据权利要求1所述的制备方法，其特征在于：夹具间距42mm。
9.根据权利要求1所述的制备方法，其特征在于：拉伸速率45mm/min。
CN201811115573.3A 2018-09-25 2018-09-25 一种改性淀粉/pbs共混材料的制备方法 Withdrawn CN109333953A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110577673A (zh) * 2019-09-11 2019-12-17 东华大学 一种聚离子液体改性的疏水型热塑型淀粉及其制备方法
CN110628087A (zh) * 2019-09-11 2019-12-31 东华大学 一种聚离子液体增塑的热塑性淀粉及其制备方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110577673A (zh) * 2019-09-11 2019-12-17 东华大学 一种聚离子液体改性的疏水型热塑型淀粉及其制备方法
CN110628087A (zh) * 2019-09-11 2019-12-31 东华大学 一种聚离子液体增塑的热塑性淀粉及其制备方法
CN110628087B (zh) * 2019-09-11 2021-07-16 东华大学 一种聚离子液体增塑的热塑性淀粉及其制备方法
CN110577673B (zh) * 2019-09-11 2021-10-01 东华大学 一种聚离子液体改性的疏水型热塑型淀粉及其制备方法

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Application publication date: 20190215