WO2022094791A1 - Degradable stone-plastic polypropylene material and preparation method therefor - Google Patents

Degradable stone-plastic polypropylene material and preparation method therefor Download PDF

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Publication number
WO2022094791A1
WO2022094791A1 PCT/CN2020/126455 CN2020126455W WO2022094791A1 WO 2022094791 A1 WO2022094791 A1 WO 2022094791A1 CN 2020126455 W CN2020126455 W CN 2020126455W WO 2022094791 A1 WO2022094791 A1 WO 2022094791A1
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degradable
polypropylene material
parts
polypropylene
stone
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PCT/CN2020/126455
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French (fr)
Chinese (zh)
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茅迅毅
陈晨
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上海荣腾包装服务有限公司
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Priority to PCT/CN2020/126455 priority Critical patent/WO2022094791A1/en
Publication of WO2022094791A1 publication Critical patent/WO2022094791A1/en

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    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene

Definitions

  • the invention relates to the technical field of plates, in particular to a degradable stone-plastic polypropylene material and a preparation method thereof.
  • Polypropylene (PP) is a semi-crystalline thermoplastic. It has high impact resistance, strong and tough mechanical properties, and is resistant to various organic solvents and acid and alkali corrosion. It has a wide range of applications in the industry and is one of the common polymer materials.
  • a large number of discarded plastic products can be seen everywhere in various public places, including sheets made of polypropylene. They come from nature and are made by humans, but they are not easily absorbed by nature, thus affecting the ecological environment of nature. From the perspective of saving resources, since the main source of plastic products is petroleum resources that are facing depletion, they should be recycled as much as possible. However, because the production cost of recycling at this stage is much higher than the direct production cost, it is difficult to do it under the current market economy conditions. There is an urgent need to provide a degradable plastic, which can be completely decomposed into small molecular substances within a certain period of time after use, so that it can be recycled by nature again.
  • the present invention is proposed to solve the above problems in the prior art.
  • a first aspect of the present invention provides a degradable stone-plastic polypropylene material, which, in parts by mass, comprises the following components:
  • the modifier is a stearate and/or a resin.
  • the stearate includes barium stearate/zinc stearate.
  • the resin is one or more of polyethylene wax, oxidized polyethylene wax, ethylene-octene copolymer, SEPS elastic soft glue and SEBS elastic soft glue.
  • the particle size of the limestone powder is 400-2500 mesh.
  • the present invention also provides a method for preparing the above-mentioned degradable stone-plastic polypropylene material, which specifically includes the following steps:
  • a mixer is provided in step S1, the mixing time is 20 to 25 minutes, and the rotation speed of the mixer is 80-100 r/min.
  • the temperature of the melt-kneading in step S2 is 180-190°C.
  • the extrusion temperature of the screw extruder in step S2 is 180-190°C in the first stage, 190-195°C in the second stage, and 195-200°C in the third stage.
  • the present invention adopts the above-mentioned technical scheme, compared with the prior art, has the following technical effects:
  • the present invention uses limestone powder as the main raw material, which has the characteristics of degradability and low cost, and the effective combination of copolymerized polypropylene, homopolymerized polypropylene and limestone powder can greatly improve the performance of polypropylene on the basis of ensuring the characteristics of polypropylene.
  • the production cost is reduced, and the degradable characteristics are realized;
  • the composition formula including the copolymerized polypropylene improves the optical properties, increases the transparency and reduces the haze.
  • the present invention uses limestone powder and polypropylene as main components, wherein the inorganic mineral powder has the characteristics of degradability and low cost; the effective combination of polypropylene and calcium carbonate can greatly reduce the material consumption on the basis of ensuring the properties of polypropylene itself. production cost.
  • Polypropylene random copolymer is also a kind of polypropylene, and the basic structure of its polymer chain is modified by adding different kinds of monomer molecules.
  • random copolymers have improved optical properties (increased clarity and reduced haze), improved impact resistance, increased flexibility, and reduced melting temperature, which in turn also reduces thermal fusion temperature ; at the same time substantially the same as the homopolymer in terms of chemical stability, water vapour barrier properties and organoleptic properties (low odor and taste). It is used in blow molding, injection molding, extrusion molding, film and sheet extrusion processing, and can be used in household water pipes, food packaging materials, pharmaceutical packaging materials and daily consumer goods.
  • the present invention provides a degradable stone-plastic polypropylene material, which, in parts by mass, comprises the following components:
  • the present embodiment provides a method for preparing a degradable stone-plastic polypropylene material, which specifically includes the following steps:
  • S1 Weigh 60 parts of limestone powder, 20 parts of copolymerized polypropylene (K8003), 15 parts of homopolypropylene (T03), modifiers include 3 parts of polyethylene wax, 0.5 part of barium stearate and zinc stearate 1.5 parts, the limestone powder, copolymerized polypropylene, homopolypropylene and modifier are placed in a mixer and mixed in turn, the mixing time is 20 to 25 minutes, and the speed of the mixer is 80-100r/min to obtain a mixture;
  • the present embodiment provides a method for preparing a degradable stone-plastic polypropylene material, which specifically includes the following steps:
  • S1 Weigh 60 parts of limestone powder, 20 parts of copolymerized polypropylene (K8003), 15 parts of homopolypropylene (T03) and 5 parts of modifier, including 2.5 parts of polyethylene wax, 1 part of barium stearate 1.5 parts of zinc stearate and 1.5 parts of zinc stearate, the limestone powder, copolymerized polypropylene, homopolypropylene and modifier are placed in a mixer and mixed, the mixing time is 20 to 25 minutes, and the mixer speed is 80-100r/ min to obtain a mixture;
  • the present embodiment provides a method for preparing a degradable stone-plastic polypropylene material, which specifically includes the following steps:
  • S1 Weigh 50 parts of limestone powder, 15 parts of copolymerized polypropylene (K8003), 15 parts of homopolypropylene (T03) and 5 parts of modifier, including 2.5 parts of polyethylene wax, 1 part of barium stearate 1.5 parts of zinc stearate and 1.5 parts of zinc stearate, the limestone powder, copolymerized polypropylene, homopolypropylene and modifier are placed in a mixer and mixed, the mixing time is 20 to 25 minutes, and the mixer speed is 80-100r/ min to obtain a mixture;
  • the polypropylene M800E produced by Shanghai Petrochemical was purchased as a comparative example.
  • the polypropylene M800E is prepared into a material with the same size, shape and thickness as the degradable stone-plastic polypropylene material prepared in Examples 1-3.
  • Example 1 The mechanical properties of Examples 1-3 and the comparative examples were tested, wherein: the thickness of the finished product was measured according to GB/T 6672-2001; the tensile strength of the finished product was measured according to GB/T1040-2006; the impact was tested according to GB/T1843-2008 Strength (test condition 23°C), the obtained test data are shown in Table 1.
  • the photodegradation test is carried out to the degradable stone-plastic polypropylene material prepared in the embodiment 1-3, and the specific test method is as follows:

Abstract

Disclosed are a degradable stone-plastic polypropylene material and a preparation method therefor. The degradable stone-plastic polypropylene material comprises, in parts by mass, the following components: 50-60 parts of a limestone powder, 15-20 parts of a copolymerized polypropylene, 10-15 parts of a homopolymerized polypropylene, and 0-5 parts of a modifier. The present invention provides a stone-plastic polypropylene material with the limestone powder as the main raw material, which has the characteristics of being degradable and low cost; and the effective combination of the copolymerized polypropylene, homopolymerized polypropylene and limestone powder can greatly reduce the production cost and achieve the degradable property on the basis of ensuring the properties of the polypropylene.

Description

一种可降解石塑聚丙烯材料及其制备方法A kind of degradable stone plastic polypropylene material and preparation method thereof 技术领域technical field
本发明涉及板材技术领域，尤其涉及一种可降解石塑聚丙烯材料及其制备方法。The invention relates to the technical field of plates, in particular to a degradable stone-plastic polypropylene material and a preparation method thereof.
背景技术Background technique
聚丙烯(Polypropylene，简称PP)是一种半结晶的热塑性塑料。具有较高的耐冲击性，机械性质强韧，抗多种有机溶剂和酸碱腐蚀。在工业界有广泛的应用，是平常常见的高分子材料之一。Polypropylene (PP) is a semi-crystalline thermoplastic. It has high impact resistance, strong and tough mechanical properties, and is resistant to various organic solvents and acid and alkali corrosion. It has a wide range of applications in the industry and is one of the common polymer materials.
在各种公共场所到处都能看见大量废弃的塑料制品，其中就包括以聚丙烯为原料板材。他们从自然界而来，由人类制造，却不易被自然所消纳，从而影响了大自然的生态环境。从节约资源的角度出发，由于塑料制品主要来源是面临枯竭的石油资源，应尽可能回收，但由于现阶段再回收的生产成本远高于直接生产成本，在现行市场经济条件下难以做到。现在亟需提供一种可降解的塑料，在使用完毕后，能够在一定时间能完全分解成为小分子物质，从而被自然界再次回收利用。A large number of discarded plastic products can be seen everywhere in various public places, including sheets made of polypropylene. They come from nature and are made by humans, but they are not easily absorbed by nature, thus affecting the ecological environment of nature. From the perspective of saving resources, since the main source of plastic products is petroleum resources that are facing depletion, they should be recycled as much as possible. However, because the production cost of recycling at this stage is much higher than the direct production cost, it is difficult to do it under the current market economy conditions. There is an urgent need to provide a degradable plastic, which can be completely decomposed into small molecular substances within a certain period of time after use, so that it can be recycled by nature again.
因此，提供一种成本低廉、力学性能稳定、环保可降解的材质应用于板材，是一个重要的研究方向。Therefore, it is an important research direction to provide a material with low cost, stable mechanical properties, environmental protection and degradability for use in sheet metal.
发明内容SUMMARY OF THE INVENTION
本发明为解决现有技术中的上述问题提出的。The present invention is proposed to solve the above problems in the prior art.
本发明的第一方面提供了一种可降解石塑聚丙烯材料，以质量份数计，包括以下成分组成：A first aspect of the present invention provides a degradable stone-plastic polypropylene material, which, in parts by mass, comprises the following components:
Figure PCTCN2020126455-appb-000001
Figure PCTCN2020126455-appb-000001
Figure PCTCN2020126455-appb-000002
Figure PCTCN2020126455-appb-000002
优选地，以质量份数计，包括以下成分组成：Preferably, in parts by mass, the following components are included:
Figure PCTCN2020126455-appb-000003
Figure PCTCN2020126455-appb-000003
优选地，改性剂为硬脂酸盐和/或树脂。Preferably, the modifier is a stearate and/or a resin.
进一步地，所述硬脂酸盐包括硬脂酸钡/硬脂酸锌。Further, the stearate includes barium stearate/zinc stearate.
进一步地，所述树脂为聚乙烯蜡、氧化聚乙烯蜡、乙烯-辛烯共聚物、SEPS弹性软胶和SEBS弹性软胶中的一种或几种。Further, the resin is one or more of polyethylene wax, oxidized polyethylene wax, ethylene-octene copolymer, SEPS elastic soft glue and SEBS elastic soft glue.
优选地，所述石灰石粉体的粒径为400-2500目。Preferably, the particle size of the limestone powder is 400-2500 mesh.
第二方面，本发明还提供了上述可降解石塑聚丙烯材料的制备方法，具体包括以下步骤：In a second aspect, the present invention also provides a method for preparing the above-mentioned degradable stone-plastic polypropylene material, which specifically includes the following steps:
S1：称取各原料：依次将石灰石粉体、共聚聚丙烯、均聚聚丙烯以及改性剂混合，得到混合物；S1: Weigh each raw material: mix limestone powder, copolymerized polypropylene, homopolypropylene and modifier in turn to obtain a mixture;
S2：造粒：将所述混合物料送入螺杆挤压机，熔融混炼，得到颗粒状物料；S2: granulation: the mixed material is sent to a screw extruder, melted and kneaded to obtain a granular material;
S3：将所述粒料放入挤塑机挤出并压延成板材。S3: Put the pellets into an extruder to extrude and calender into a plate.
优选地，步骤S1中提供一混合机，混合时间为20至25分钟，混合机转速为80-100r/min。Preferably, a mixer is provided in step S1, the mixing time is 20 to 25 minutes, and the rotation speed of the mixer is 80-100 r/min.
优选地，步骤S2中的所述熔融混炼的温度为180-190℃。Preferably, the temperature of the melt-kneading in step S2 is 180-190°C.
优选地，步骤S2中所述螺杆挤压机挤出分段温度为：第一段180～190℃、第二段190～195℃、第三段195～200℃。Preferably, the extrusion temperature of the screw extruder in step S2 is 180-190°C in the first stage, 190-195°C in the second stage, and 195-200°C in the third stage.
本发明采用上述技术方案，与现有技术相比，具有如下技术效果：The present invention adopts the above-mentioned technical scheme, compared with the prior art, has the following technical effects:
(1)本发明以石灰石粉体为主要原料，其具有可降解及成本低的特点，共聚聚丙烯、均聚聚丙烯、石灰石粉体的有效结合，能够在保证聚丙烯特性的基础上，大大降低了生产成本，并实现可降解特性；(2)包括共聚聚丙烯的成分配方，改进了光学性能，增加了透明度并减少了浊雾。(1) The present invention uses limestone powder as the main raw material, which has the characteristics of degradability and low cost, and the effective combination of copolymerized polypropylene, homopolymerized polypropylene and limestone powder can greatly improve the performance of polypropylene on the basis of ensuring the characteristics of polypropylene. The production cost is reduced, and the degradable characteristics are realized; (2) the composition formula including the copolymerized polypropylene improves the optical properties, increases the transparency and reduces the haze.
具体实施方式Detailed ways
本发明以石灰石粉体和聚丙烯为主要成分，其中无机矿粉具有可降解及成本低的特点；聚丙烯和碳酸钙的有效结合，能够在保证聚丙烯本身性质的基础上，大大降低了材料的生产成本。The present invention uses limestone powder and polypropylene as main components, wherein the inorganic mineral powder has the characteristics of degradability and low cost; the effective combination of polypropylene and calcium carbonate can greatly reduce the material consumption on the basis of ensuring the properties of polypropylene itself. production cost.
聚丙烯无规共聚物也是聚丙烯的一种，它的高分子链的基本结构用加进不同种类的单体分子加以改性。与PP均聚物相比，无规共聚物改进了光学性能(增加了透明度并减少了浊雾)，提高了抗冲击性能，增加了挠性，降低了熔化温度，从而也降低了热熔接温度；同时在化学稳定性、水蒸汽隔离性能和器官感觉性能(低气味和味道)方面与均聚物基本相同。应用于吹塑、注塑、挤塑、薄膜和片材挤压加工领域，可用作家用自来水管、食品包装材料、医药包装材料和日常消费品。Polypropylene random copolymer is also a kind of polypropylene, and the basic structure of its polymer chain is modified by adding different kinds of monomer molecules. Compared to PP homopolymers, random copolymers have improved optical properties (increased clarity and reduced haze), improved impact resistance, increased flexibility, and reduced melting temperature, which in turn also reduces thermal fusion temperature ; at the same time substantially the same as the homopolymer in terms of chemical stability, water vapour barrier properties and organoleptic properties (low odor and taste). It is used in blow molding, injection molding, extrusion molding, film and sheet extrusion processing, and can be used in household water pipes, food packaging materials, pharmaceutical packaging materials and daily consumer goods.
本发明提供了一种可降解石塑聚丙烯材料，以质量份数计，包括以下成分组成：The present invention provides a degradable stone-plastic polypropylene material, which, in parts by mass, comprises the following components:
Figure PCTCN2020126455-appb-000004
Figure PCTCN2020126455-appb-000004
优选地，以质量份数计，包括以下成分组成：Preferably, in parts by mass, the following components are included:
Figure PCTCN2020126455-appb-000005
Figure PCTCN2020126455-appb-000005
下面通过具体实施例对本发明进行详细和具体的介绍，以使更好的理解本发明，但是下述实施例并不限制本发明范围。The present invention will be described in detail and concretely below through specific embodiments, so as to make the present invention better understood, but the following embodiments do not limit the scope of the present invention.
实施例1Example 1
本实施例提供一种可降解石塑聚丙烯材料的制备方法，具体包括以下步骤：The present embodiment provides a method for preparing a degradable stone-plastic polypropylene material, which specifically includes the following steps:
S1：称量石灰石粉体60份、共聚聚丙烯(K8003)20份、均聚聚丙烯(T03)15份，改性剂包括聚乙烯蜡3份、硬脂酸钡0.5份和硬脂酸锌1.5份，依次将石灰石粉体、共聚聚丙烯、均聚聚丙烯以及改性剂置于混合机中混合，混合时间为20至25分钟，混合机转速为80-100r/min，得到混合物；S1: Weigh 60 parts of limestone powder, 20 parts of copolymerized polypropylene (K8003), 15 parts of homopolypropylene (T03), modifiers include 3 parts of polyethylene wax, 0.5 part of barium stearate and zinc stearate 1.5 parts, the limestone powder, copolymerized polypropylene, homopolypropylene and modifier are placed in a mixer and mixed in turn, the mixing time is 20 to 25 minutes, and the speed of the mixer is 80-100r/min to obtain a mixture;
S2：造粒：将所述混合物料送入螺杆挤压机，熔融混炼，温度为180-190℃，得到颗粒状物料，挤出分段温度为：第一段180～190℃、第二段190～195℃、第三段195～200℃，得到颗粒状物料；S2: Granulation: the mixed material is sent to a screw extruder, melted and kneaded at a temperature of 180-190°C to obtain a granular material. Section 190-195 ℃, third section 195-200 ℃, obtain granular material;
S3：将所述粒料放入挤塑机挤出并压延成板材。S3: Put the pellets into an extruder to extrude and calender into a plate.
实施例2Example 2
本实施例提供一种可降解石塑聚丙烯材料的制备方法，具体包括以下步骤：The present embodiment provides a method for preparing a degradable stone-plastic polypropylene material, which specifically includes the following steps:
S1：称量石灰石粉体60份、共聚聚丙烯(K8003)20份、均聚聚丙烯(T03)15份和改性剂5份，改性剂包括聚乙烯蜡2.5份、硬脂酸钡1份和硬脂酸锌1.5份，依次将石灰石粉体、共聚聚丙烯、均聚聚丙烯以及改性剂置于混合机中混合，混合时间为20至25分钟，混合机转速为80-100r/min，得到混合物；S1: Weigh 60 parts of limestone powder, 20 parts of copolymerized polypropylene (K8003), 15 parts of homopolypropylene (T03) and 5 parts of modifier, including 2.5 parts of polyethylene wax, 1 part of barium stearate 1.5 parts of zinc stearate and 1.5 parts of zinc stearate, the limestone powder, copolymerized polypropylene, homopolypropylene and modifier are placed in a mixer and mixed, the mixing time is 20 to 25 minutes, and the mixer speed is 80-100r/ min to obtain a mixture;
S2：造粒：将所述混合物料送入螺杆挤压机，熔融混炼，温度为180-190℃，得到颗粒状物料，挤出分段温度为：第一段180～190℃、第二段190～195℃、第三段195～200℃，得到颗粒状物料；S2: Granulation: the mixed material is sent to a screw extruder, melted and kneaded at a temperature of 180-190°C to obtain a granular material. Section 190-195 ℃, third section 195-200 ℃, obtain granular material;
S3：将所述粒料放入挤塑机挤出并压延成板材。S3: Put the pellets into an extruder to extrude and calender into a plate.
实施例3Example 3
本实施例提供一种可降解石塑聚丙烯材料的制备方法，具体包括以下步骤：The present embodiment provides a method for preparing a degradable stone-plastic polypropylene material, which specifically includes the following steps:
S1：称量石灰石粉体50份、共聚聚丙烯(K8003)15份、均聚聚丙烯(T03)15份和改性剂5份，改性剂包括聚乙烯蜡2.5份、硬脂酸钡1份和硬脂酸锌1.5份，依次将石灰石粉体、共聚聚丙烯、均聚聚丙烯以及改性剂置于混合机中混合，混合时间为20至25分钟，混合机转速为80-100r/min，得到混合物；S1: Weigh 50 parts of limestone powder, 15 parts of copolymerized polypropylene (K8003), 15 parts of homopolypropylene (T03) and 5 parts of modifier, including 2.5 parts of polyethylene wax, 1 part of barium stearate 1.5 parts of zinc stearate and 1.5 parts of zinc stearate, the limestone powder, copolymerized polypropylene, homopolypropylene and modifier are placed in a mixer and mixed, the mixing time is 20 to 25 minutes, and the mixer speed is 80-100r/ min to obtain a mixture;
S2：造粒：将所述混合物料送入螺杆挤压机，熔融混炼，温度为180-190℃，得到颗粒状物料，挤出分段温度为：第一段180～190℃、第二段190～195℃、第三段195～200℃，得到颗粒状物料；S2: Granulation: the mixed material is sent to a screw extruder, melted and kneaded at a temperature of 180-190°C to obtain a granular material. Section 190-195 ℃, third section 195-200 ℃, obtain granular material;
S3：将所述粒料放入挤塑机挤出并压延成板材。S3: Put the pellets into an extruder to extrude and calender into a plate.
力学性能测试例Mechanical properties test example
购买上海石化生产的聚丙烯M800E作为对比例。将聚丙烯M800E制备成与实施例1-3中制得的可降解石塑聚丙烯材料相同大小、形状、厚度相同的材料。The polypropylene M800E produced by Shanghai Petrochemical was purchased as a comparative example. The polypropylene M800E is prepared into a material with the same size, shape and thickness as the degradable stone-plastic polypropylene material prepared in Examples 1-3.
对实施例1-3和对比例进行力学性能检测，其中：按照GB/T 6672-2001进行成品厚度的测定；按照GB/T1040-2006进行成品拉伸强度测定；按照 GB/T1843-2008测试冲击强度(测试条件23℃)，得到的检测数据如表1所示。The mechanical properties of Examples 1-3 and the comparative examples were tested, wherein: the thickness of the finished product was measured according to GB/T 6672-2001; the tensile strength of the finished product was measured according to GB/T1040-2006; the impact was tested according to GB/T1843-2008 Strength (test condition 23°C), the obtained test data are shown in Table 1.
表1实施例1-3力学性能检测结果Table 1 Example 1-3 Mechanical Properties Test Results
样品sample 拉伸强度/MpaTensile strength/Mpa 冲击强度J/mImpact strength J/m
实施例1Example 1 3030 5151
实施例2Example 2 2727 4646
实施例3Example 3 2626 4040
对比例Comparative ratio 2626 3535
UV光降解测试例UV photodegradation test example
对实施例1-3中制得的可降解石塑聚丙烯材料进行光降解测试，具体测试方法如下：The photodegradation test is carried out to the degradable stone-plastic polypropylene material prepared in the embodiment 1-3, and the specific test method is as follows:
测试方法：ASTM D3826-18&ASTM D5208-15 Cycle ATest method: ASTM D3826-18&ASTM D5208-15 Cycle A
灯管类型：UVA-340Lamp Type: UVA-340
光照：20h，50℃BPT，0.89W/(m 2·nm)@340nm Lighting: 20h, 50℃BPT, 0.89W/(m 2 ·nm)@340nm
冷凝：4h，40℃BPTCondensation: 4h, 40℃BPT
暴露时间：336hExposure time: 336h
表2实施例1-3UV光降解测试结果Table 2 embodiment 1-3 UV photodegradation test results
薄膜样品Film samples 测试后after test
实施例1Example 1 出现可视断裂visible fracture
实施例2Example 2 出现可视断裂visible fracture
实施例3Example 3 出现可视断裂visible fracture
以上对本发明的具体实施例进行了详细描述，但其只是作为范例，本发明并不限制于以上描述的具体实施例。对于本领域技术人员而言，任何对本发明进行的等同修改和替代也都在本发明的范畴之中。因此，在不脱离本发明的精神和范围下所作的均等变换和修改，都应涵盖在本发明的范围内。The specific embodiments of the present invention have been described above in detail, but they are only used as examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be included within the scope of the present invention.

Claims (10)

  1. 一种可降解石塑聚丙烯材料，以质量份数计，包括以下成分组成：A degradable stone-plastic polypropylene material, measured in parts by mass, comprising the following components:
    Figure PCTCN2020126455-appb-100001
    Figure PCTCN2020126455-appb-100001
  2. 根据权利要求1所述的可降解石塑聚丙烯材料，其特征在于，以质量份数计，包括以下成分组成：The degradable stone-plastic polypropylene material according to claim 1, characterized in that, in parts by mass, it comprises the following components:
    Figure PCTCN2020126455-appb-100002
    Figure PCTCN2020126455-appb-100002
  3. 根据权利要求1所述的可降解石塑聚丙烯材料，其特征在于，所述改性剂为硬脂酸盐和/或树脂。The degradable stone-plastic polypropylene material according to claim 1, wherein the modifier is stearate and/or resin.
  4. 根据权利要求3所述的可降解石塑聚丙烯材料，其特征在于，所述硬脂酸盐包括硬脂酸钡/硬脂酸锌。The degradable stone-plastic polypropylene material according to claim 3, wherein the stearate comprises barium stearate/zinc stearate.
  5. 根据权利要求3所述的可降解石塑聚丙烯材料，其特征在于，所述树脂为聚乙烯蜡、氧化聚乙烯蜡、乙烯-辛烯共聚物、SEPS弹性软胶和SEBS弹性软胶中的一种或几种。The degradable stone-plastic polypropylene material according to claim 3, wherein the resin is polyethylene wax, oxidized polyethylene wax, ethylene-octene copolymer, SEPS elastic soft glue and SEBS elastic soft glue one or more.
  6. 根据权利要求1所述的可降解石塑聚丙烯材料，其特征在于，所述石灰石粉体的粒径为400-2500目。The degradable stone-plastic polypropylene material according to claim 1, wherein the particle size of the limestone powder is 400-2500 mesh.
  7. 一种如权利要求1-6任一项所述的可降解石塑聚丙烯材料的制备方法，其特征在于，具体包括以下步骤：A method for preparing a degradable stone-plastic polypropylene material as claimed in any one of claims 1-6, characterized in that, the method specifically comprises the following steps:
    S1：称取各原料：依次将石灰石粉体、共聚聚丙烯、均聚聚丙烯以及改性剂混合，得到混合物；S1: Weigh each raw material: mix limestone powder, copolymerized polypropylene, homopolypropylene and modifier in turn to obtain a mixture;
    S2：造粒：将所述混合物料送入螺杆挤压机，熔融混炼，得到颗粒状物料；S2: granulation: the mixed material is sent to a screw extruder, melted and kneaded to obtain a granular material;
    S3：将所述粒料放入挤塑机挤出并压延成板材。S3: put the pellets into an extruder to extrude and calender into a plate.
  8. 根据权利要求7所述的制备方法，其特征在于，步骤S1中提供一混合机，混合时间为20至25分钟，混合机转速为80-100r/min。The preparation method according to claim 7, wherein a mixer is provided in step S1, the mixing time is 20 to 25 minutes, and the rotation speed of the mixer is 80-100 r/min.
  9. 根据权利要求7所述的制备方法，其特征在于，步骤S2中的所述熔融混炼的温度为180-190℃。The preparation method according to claim 7, wherein the temperature of the melt-kneading in step S2 is 180-190°C.
  10. 根据权利要求7所述的制备方法，其特征在于，步骤S2中所述螺杆挤压机挤出分段温度为：第一段180～190℃、第二段190～195℃、第三段195～200℃。The preparation method according to claim 7, wherein the extrusion temperature of the screw extruder in step S2 is: 180-190°C in the first segment, 190-195°C in the second segment, and 195°C in the third segment ~200°C.
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