V. Lebedev, D. Miroshnichenko, V. Mysiak, D. Bilets, T. Tykhomyrova, D. Savchenko
{"title":"腐殖质改性的复合型环保可生物降解建筑复合材料","authors":"V. Lebedev, D. Miroshnichenko, V. Mysiak, D. Bilets, T. Tykhomyrova, D. Savchenko","doi":"10.31650/2415-377x-2022-87-92-99","DOIUrl":null,"url":null,"abstract":"Obtaining hybrid eco-friendly biodegradable structural composites was considered. The aim of this work was to determining the properties of hybrid eco-friendly biodegradable construction composites modified with humic substances. Hybrid eco-friendly construction composites were obtained on the basis of bioplastic polylactides with the addition as a filler of coffee grounds with a polyfractional composition within a particle size of 0.5 mm to 1 mm and a hybrid modifier – humic substances from brown coal. Hybrid ecofriendly construction composites were obtained by extrusion of pre-prepared raw materials in a single-screw laboratory extruder at a temperature of 170–200 °С and an auger rotation speed of 30–100 rpm. Investigated impact strength, breaking stress during bending, melt flow index (MFI) and melting temperature of hybrid ecofriendly biodegradable structural composites modified with humic substances. Optimization studies have been carried out to determine the most effective composition of new ecofriendly structural composites based on bioplastics of polylactides, coffee grounds waste and humic substances of three different types. Researching data together with the data of impact strength, allows us to make assumptions about the possibility of forming a variety of products from structurally composite material, herewith a composition with a coffee content of 50 % by mass. deserves a special attention. The data show an increase the impact strength and the breaking stress during bending a hybrid modification of ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances in 2.5 times, with optimal in terms of strength characteristics is the content of coffee grounds at 50 % wt. and 0.5 % by mass humic substances with the highest content of volatile substances and the lowest content of carbon. For such hybrid ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances, the MFI is characterized by 3.1 g/10 min. and the processing temperature range is 182–188 °C. It is shown, that the designed hybrid eco-friendly biodegradable structural composites modified with humic substances can be used in the production of high-strength structures and elements for engineering purposes.","PeriodicalId":273453,"journal":{"name":"Bulletin of Odessa State Academy of Civil Engineering and Architecture","volume":"23 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"HYBRID ECO-FRIENDLY BIODEGRADABLE CONSTRUCTION COMPOSITES MODIFIED WITH HUMIC SUBSTANCES\",\"authors\":\"V. Lebedev, D. Miroshnichenko, V. Mysiak, D. Bilets, T. Tykhomyrova, D. Savchenko\",\"doi\":\"10.31650/2415-377x-2022-87-92-99\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Obtaining hybrid eco-friendly biodegradable structural composites was considered. The aim of this work was to determining the properties of hybrid eco-friendly biodegradable construction composites modified with humic substances. Hybrid eco-friendly construction composites were obtained on the basis of bioplastic polylactides with the addition as a filler of coffee grounds with a polyfractional composition within a particle size of 0.5 mm to 1 mm and a hybrid modifier – humic substances from brown coal. Hybrid ecofriendly construction composites were obtained by extrusion of pre-prepared raw materials in a single-screw laboratory extruder at a temperature of 170–200 °С and an auger rotation speed of 30–100 rpm. Investigated impact strength, breaking stress during bending, melt flow index (MFI) and melting temperature of hybrid ecofriendly biodegradable structural composites modified with humic substances. Optimization studies have been carried out to determine the most effective composition of new ecofriendly structural composites based on bioplastics of polylactides, coffee grounds waste and humic substances of three different types. Researching data together with the data of impact strength, allows us to make assumptions about the possibility of forming a variety of products from structurally composite material, herewith a composition with a coffee content of 50 % by mass. deserves a special attention. The data show an increase the impact strength and the breaking stress during bending a hybrid modification of ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances in 2.5 times, with optimal in terms of strength characteristics is the content of coffee grounds at 50 % wt. and 0.5 % by mass humic substances with the highest content of volatile substances and the lowest content of carbon. For such hybrid ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances, the MFI is characterized by 3.1 g/10 min. and the processing temperature range is 182–188 °C. 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引用次数: 0
摘要
研究了复合环保可生物降解结构复合材料的制备方法。本研究的目的是确定腐殖质改性的混合环保可生物降解建筑复合材料的性能。以生物塑料聚乳酸为基础,添加粒径在0.5 mm ~ 1mm的多组分咖啡渣为填料,并添加褐煤腐殖质为杂化改性剂,制备了复合型环保建筑复合材料。将预先准备好的原料在单螺杆实验室挤出机中,在温度为170-200°С,螺旋钻转速为30-100 rpm的条件下挤出,得到混合环保建筑复合材料。研究了腐植质改性的复合型生态友好型可生物降解结构复合材料的冲击强度、弯曲断裂应力、熔体流动指数(MFI)和熔化温度。以聚乳酸生物塑料、咖啡渣废料和三种不同类型的腐殖质为基础,对新型环保结构复合材料进行了优化研究,以确定其最有效的组成。研究数据和冲击强度数据,使我们能够假设结构复合材料形成各种产品的可能性,其中咖啡含量为质量的50%。值得特别关注。结果表明,以聚乳酸、咖啡渣和腐殖质为基料对可降解建筑材料进行复合改性,其抗冲击强度和弯曲断裂应力提高了2.5倍,其中咖啡渣质量分数为50%、腐殖质质量分数为0.5%时强度特性最佳,挥发性物质含量最高,碳含量最低。以聚丙交酯、咖啡渣、腐殖质为原料制备的复合型环保可生物降解建筑复合材料,其MFI为3.1 g/10 min,加工温度范围为182 ~ 188℃。结果表明,所设计的以腐殖质为改性材料的杂化环保可生物降解结构复合材料可用于生产高强度的工程结构和元件。
HYBRID ECO-FRIENDLY BIODEGRADABLE CONSTRUCTION COMPOSITES MODIFIED WITH HUMIC SUBSTANCES
Obtaining hybrid eco-friendly biodegradable structural composites was considered. The aim of this work was to determining the properties of hybrid eco-friendly biodegradable construction composites modified with humic substances. Hybrid eco-friendly construction composites were obtained on the basis of bioplastic polylactides with the addition as a filler of coffee grounds with a polyfractional composition within a particle size of 0.5 mm to 1 mm and a hybrid modifier – humic substances from brown coal. Hybrid ecofriendly construction composites were obtained by extrusion of pre-prepared raw materials in a single-screw laboratory extruder at a temperature of 170–200 °С and an auger rotation speed of 30–100 rpm. Investigated impact strength, breaking stress during bending, melt flow index (MFI) and melting temperature of hybrid ecofriendly biodegradable structural composites modified with humic substances. Optimization studies have been carried out to determine the most effective composition of new ecofriendly structural composites based on bioplastics of polylactides, coffee grounds waste and humic substances of three different types. Researching data together with the data of impact strength, allows us to make assumptions about the possibility of forming a variety of products from structurally composite material, herewith a composition with a coffee content of 50 % by mass. deserves a special attention. The data show an increase the impact strength and the breaking stress during bending a hybrid modification of ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances in 2.5 times, with optimal in terms of strength characteristics is the content of coffee grounds at 50 % wt. and 0.5 % by mass humic substances with the highest content of volatile substances and the lowest content of carbon. For such hybrid ecofriendly biodegradable construction composites based on polylactide, coffee grounds waste and humic substances, the MFI is characterized by 3.1 g/10 min. and the processing temperature range is 182–188 °C. It is shown, that the designed hybrid eco-friendly biodegradable structural composites modified with humic substances can be used in the production of high-strength structures and elements for engineering purposes.