CN113150359B - 一种具有梯度孔结构的发泡材料的制备方法 - Google Patents
一种具有梯度孔结构的发泡材料的制备方法 Download PDFInfo
- Publication number
- CN113150359B CN113150359B CN202110320094.0A CN202110320094A CN113150359B CN 113150359 B CN113150359 B CN 113150359B CN 202110320094 A CN202110320094 A CN 202110320094A CN 113150359 B CN113150359 B CN 113150359B
- Authority
- CN
- China
- Prior art keywords
- foaming
- master slice
- parts
- agent
- cell
- 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.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Emergency Medicine (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
本发明公布了一种具有梯度孔结构的发泡材料的制备方法,包含以下步骤:以聚合物为基体,机械共混不同含量的发泡助剂、润滑剂、成核剂、交联剂、发泡剂,通过密炼开炼的方式分别制备大泡孔发泡母片和小泡孔发泡母片;测量发泡母片密度,根据模腔体积,计算填满90%以上模腔体积所需的母片质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;合模进行微波加热发泡,加热温度为165‑175℃,合模时间为400‑700s;合模加热后立即泄压、开模,即可。本发明利用不同类型的发泡剂,在发泡过程中吸放热不同,改变相应物料熔体强度及黏度,使施加给气泡生长过程中的阻力不一,从而制备具有梯度孔结构的发泡材料,本发明生产效率高,适合工业大规模生产。
Description
技术领域
本发明涉及发泡材料制备领域,尤其涉及一种具有梯度孔结构的发泡材料的制备方法。
背景技术
功能梯度材料是指一种结构、功能或者组分等不断连续性改变或者呈现出规律性的一种材料。功能梯度孔结构是指一种在材料内部孔结构或孔密度呈现梯度变化,并且该变化贯穿于整个多孔材料中。与传统的多孔材料相比,功能梯度孔结构的材料在很多方面都有其得天独厚的优势,比如在[Ghaffari Mosanenzadeh S et al.Journal ofMaterialsScience,2015,50(3):1248-1256.]曾提到梯度孔结构在吸音方面相比较传统多孔材料具有更广阔的吸音频率。因而,具有梯度孔结构的发泡材料具有非常广阔的应用前景。
目前制备梯度孔结构发泡材料的方法主要使用不同温度场法:在[Zhou C,WangP,Li W.Composites Part B,2011,42(2):318-325.]中,实验人员建立了两端加热,中间放置基体的装置,使得材料在纵向上出现温度差,利用超临界气体在温度的作用下引起的热力学不稳定现象,从而制备得到不同孔径的发泡材料。
不同温度场制备梯度多孔材料由于其设备的复杂性且温度场控制比较困难等缺陷,不适合大规模应用在工业生产中。因此急需寻找一种工艺较为简单,且能够制备微米级别泡孔的制备方法。
发明内容
本发明目的是针对现有技术存在的缺陷提供一种具有梯度孔结构的发泡材料的制备方法,本发明利用不同类型的发泡剂,在发泡过程中吸放热不同,改变相应物料熔体强度及黏度,使施加给气泡生长过程中的阻力不一,从而制备相应的具有梯度孔结构的发泡材料。
本发明为实现上述目的,采用如下技术方案:
一种具有梯度孔结构的发泡材料的制备方法,包含以下步骤:
S1:以聚合物为基体,机械共混不同含量的发泡助剂、润滑剂、成核剂、交联剂、发泡剂,通过密炼开炼的方式分别制备大泡孔发泡母片和小泡孔发泡母片;
S2:测量发泡母片密度,根据模腔体积,计算填满90%以上模腔体积所需的母片质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S3:合模进行微波加热发泡,加热温度为165-175℃,合模时间为400-700s;
S4:合模加热后立即泄压,3秒时间内开模,即可得到具有梯度孔结构的发泡材料;
步骤S1中所述大泡孔发泡母片按重量份数计包括:1000份聚合物、10-12份发泡助剂、10-12份润滑剂、10-200份成核剂、8-10份交联剂、30-42份发泡剂;
步骤S1中所述小泡孔发泡母片按重量份数计包括:1000份聚合物、10-12份发泡助剂、10-12份润滑剂、10-200份成核剂、8-10份交联剂、30-55份发泡剂。
优选的,所述聚合物为LDPE、EVA、POE、OBC、SEBS、EPDM、SBS、SEPS中的一种或多种复合聚合物。
优选的,所述发泡助剂为ZnO,其含量为所述泡孔发泡母片的原料总量的1‰~1%wt。
优选的,所述润滑剂为硬脂酸及其皂类化合物、硅酮粉、酰胺类化合物中的一种或多种,其含量为所述泡孔发泡母片的原料总量的1‰~1%wt。
优选的,所述成核剂为碳酸钙、滑石粉、蒙脱土、二氧化硅、碳纳米管、石墨烯中的一种或多种,其含量为所述泡孔发泡母片的原料总量的0%~50%wt。
优选的,所述交联剂为DCP、BIBP中的一种,其含量为所述泡孔发泡母片的原料总量的1‰~2%wt。
优选的,所述大泡孔发泡母片中的发泡剂为放热型发泡剂OBSH、AC中的一种;所述小泡孔发泡母片中的发泡剂为吸热型发泡剂NaHCO3;所述放热型发泡剂的含量为所述大泡孔发泡母片的原料总量的1%~6%wt,所述吸热型发泡剂的含量为所述小泡孔发泡母片的原料总量的1%~10%wt。
本发明中,EVA指的是乙烯-醋酸乙烯共聚物,其回弹性和柔韧性好,表现出良好的缓冲、减震、隔热和防潮特性。
本发明中,EPDM指的是三元乙丙橡胶,其具有良好的耐热、耐氧化性能、防滑耐磨、弹性好、压缩形变小。
本发明中,POE为聚烯烃弹性体,一种弹性复核材料,POE塑料本身的流动性较好,它的加入可以改善整个体系的流动性。
本发明中,SEBS是以聚苯乙烯为末端段,以聚丁二烯加氢得到的乙烯-丁烯共聚物为中间弹性嵌段的线性三嵌共聚物,SEBS具有优异的耐老化性能,既具有可塑性,又具有高弹性,无需硫化即可加工使用,广泛用于生产高档弹性体、塑料改性。
本发明中,OBC为烯烃嵌段共聚物,耐老化、定性型、回弹性、耐磨性优异。
本发明中,SEPS为热塑性弹性体,性能优于SEBS。
本发明中,SBS为聚苯乙烯-聚丁二烯-聚苯乙烯三嵌段共聚物,可以使材料具有较好的耐磨性。
本发明中,OBSH(4,4-氧代双苯磺酰肼)、AC(偶氮二甲酰胺)为放热型发泡剂,NaHCO3为吸热型发泡剂;OBSH、AC的泡孔结构细微均匀,尤适用于制造聚乙烯发泡电线电缆绝缘材料、微孔聚氯乙烯糊泡沫体等各种泡沫塑料,与碳酸氢钠并用可降低分解温度。
本发明中,交联剂采用为DCP或BIPB的一种,DCP指的是过氧化二异丙苯,又称为硫化剂DCP,可作为单体聚合的引发剂,高分子材料的硫化剂、交联剂和固化剂等;BIPB又称为无味DCP、交联剂BIPB、硫化剂BIPB和架桥剂BIPB等,可作为EVA等橡胶和塑料的交联剂,同等交联效果的情况下,添加量约为DCP的2/3。
本发明中,ST指硬脂酸,其金属皂化物,如硬脂酸锌,可用ZnST指代,ST在本发明中起到了润滑的作用,改善材料的脱模效果以保护材料的表面完整度。
本发明与现有技术相比,具有以下优点及有益效果:
1.本发明通过添加不同类型吸热放热发泡剂,从而改变发泡时的局部温度,进而影响物料的黏度以及熔体强度,从而制备不同孔径的发泡材料,具有孔径控制方便,易于调整的优点。
2.由于聚合物本身就是热的不良导体,传统的热传导方式制备效率低,且内外发泡速度不一,对产品质量有较大影响,本发明采用微波加热的方式,加热从里到外比较均匀,不需要较长的传热时间,因此生产效率高。
3.微波加热发泡时控制温度在165-175℃之间,多层母片在发泡加热过程中会相互粘接,因此发泡出来是一块完整的发泡材料,不会出现分层现象,产品质量优异。
4.本发明的制备工艺简单,温度、孔径都方便控制,适合大规模应用在工业生产中,可以制备出微米级别的泡孔。
附图说明
图1为以EVA为聚合物基体通过本发明方法制备的发泡材料断面电镜图。
具体实施方式
下面将结合附图与实施例对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
下述实施例中所述试验方法或测试方法,如无特殊说明,均为常规方法;所述试剂和材料,如无特殊说明,均从常规商业途径获得,或以常规方法制备。
实施例1
本发明提共一种有梯度孔结构的发泡材料的制备方法,包含以下步骤:
S1:以聚合物为基体,机械共混不同含量的发泡助剂、润滑剂、成核剂、交联剂、发泡剂,通过密炼开炼的方式分别制备大泡孔发泡母片和小泡孔发泡母片;
S2:测量发泡母片密度,根据模腔体积,计算填满90%以上模腔体积所需的母片质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S3:合模进行微波加热发泡,加热温度为165-175℃,合模时间为400-700s;
S4:合模加热后立即泄压,3秒时间内开模,即可得到具有梯度孔结构的发泡材料;
步骤S1中所述大泡孔发泡母片按重量份数计包括:1000份聚合物、10-12份发泡助剂、10-12份润滑剂、10-200份成核剂、8-10份交联剂、30-42份发泡剂;
步骤S1中所述小泡孔发泡母片按重量份数计包括:1000份聚合物、10-12份发泡助剂、10-12份润滑剂、10-200份成核剂、8-10份交联剂、30-55份发泡剂。
优选的,所述聚合物为LDPE、EVA、POE、OBC、SEBS、EPDM、SBS、SEPS中的一种或多种复合聚合物。
优选的,所述发泡助剂为ZnO,其含量为所述泡孔发泡母片的原料总量的1‰~1%wt。
优选的,所述润滑剂为硬脂酸及其皂类化合物、硅酮粉、酰胺类化合物中的一种或多种,其含量为所述泡孔发泡母片的原料总量的1‰~1%wt。
优选的,所述成核剂为碳酸钙、滑石粉、蒙脱土、二氧化硅、碳纳米管、石墨烯中的一种或多种,其含量为所述泡孔发泡母片的原料总量的0%~50%wt。
优选的,所述交联剂为DCP、BIBP中的一种,其含量为所述泡孔发泡母片的原料总量的1‰~2%wt。
优选的,所述大泡孔发泡母片中的发泡剂为放热型发泡剂OBSH、AC中的一种;所述小泡孔发泡母片中的发泡剂为吸热型发泡剂NaHCO3;所述放热型发泡剂的含量为所述大泡孔发泡母片的原料总量的1%~6%wt,所述吸热型发泡剂的含量为所述小泡孔发泡母片的原料总量的1%~10%wt。
实施例2
包括如下步骤:
S1:取1kgEVA,30gAC,10gZnO,10gST,10gDCP,200gCaCO3,混合密炼制成大泡孔发泡母片;
S2:取1kgEVA,30gNaHCO3,10gZnO,10gST,10gDCP,200gCaCO3混合密炼制成小泡孔发泡母片;
S3:测量母片密度,根据模腔体积,计算填充95%模腔体积的发泡母片的质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S4:合模进行微波加热发泡,控制温度在165℃,合模600s后迅速泄压,3秒钟内开模,即可得到具有梯度孔结构的发泡材料。
本实施例制得的发泡材料断面电镜图如图1所示,具有明显的梯度结构。
实施例3
包括如下步骤:
S1:取1kgEVA,40gOBSH,10gZnO,10gST,10gDCP,100gCaCO3混合密炼制成大泡孔发泡母片;
S2:取1kgEVA,50gNaHCO3,10gZnO,10gST,10gDCP,100gCaCO3混合密炼制成小泡孔发泡母片;
S3:测量母片密度,根据模腔体积,计算填充95%模腔体积的发泡母片的质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S4:合模进行微波加热发泡,控制温度在165℃,合模700s后迅速泄压,3秒钟内开模,即可得到具有梯度孔结构的发泡材料。
实施例4
包括如下步骤:
S1:取500gLDPE,500gEVA,35gAC,12gZnO,12gST,8gBIBP,150gCaCO3混合密炼制成大泡孔发泡母片;
S2:取500gEVA,500gLDPE,45gNaHCO3,12gZnO,12gST,8gBIBP,150gCaCO3混合密炼制成小泡孔发泡母片;
S3:测量母片密度,根据模腔体积,计算填充95%模腔体积的发泡母片的质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S4:合模进行微波加热发泡,控制温度在175℃,合模400s后迅速泄压,3秒钟内开模,即可得到具有梯度孔结构的发泡材料。
实施例5
包括如下步骤:
S1:取100gLDPE,800gEVA,100gSEBS,42gOBSH,12gZnO,12gST,10gBIBP,10gCaCO3混合密炼制成大泡孔发泡母片;
S2:取100gLDPE,800gEVA,100gSEBS,55gNaHCO3,12gZnO,12gST,10gBIBP,10gCaCO3混合密炼制成小泡孔发泡母片;
S3:测量母片密度,根据模腔体积,计算填充95%模腔体积的发泡母片的质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S4:合模进行微波加热发泡,控制温度在170℃,合模500s后迅速泄压,3秒钟内开模,即可得到具有梯度孔结构的发泡材料。
综上所述,本发明通过添加不同吸热放热型发泡剂,从而改变发泡时的局部温度,进而影响物料的黏度以及熔体强度,从而制备不同孔径的发泡材料,具有孔径控制方便,易于调整的优点;本发明采用微波加热的方式,加热从里到外比较均匀,不需要较长的传热时间,因此生产效率高,多层母片在发泡加热过程中会相互粘接,不会出现分层现象,产品质量优异;本发明制备工艺简单,适合大规模应用在工业生产中,本方法可以制备出微米级别的泡孔。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (5)
1.一种具有梯度孔结构的发泡材料的制备方法,其特征在于,包含以下步骤:
S1:以聚合物为基体,机械共混不同含量的发泡助剂、润滑剂、成核剂、交联剂、发泡剂,通过密炼开炼的方式分别制备大泡孔发泡母片和小泡孔发泡母片;
S2:测量发泡母片密度,根据模腔体积,计算填满90%以上模腔体积所需的母片质量,其中,大泡孔发泡母片与小泡孔发泡母片的质量比为1:1;
S3:合模进行微波加热发泡,加热温度为165-175℃,合模时间为400-700s;
S4:合模加热后立即泄压,3秒时间内开模,即可得到具有梯度孔结构的发泡材料;
步骤S1中所述大泡孔发泡母片的原料按重量份数计包括:1000份聚合物、10-12份发泡助剂、10-12份润滑剂、10-200份成核剂、8-10份交联剂、30-42份发泡剂;
步骤S1中所述小泡孔发泡母片的原料按重量份数计包括:1000份聚合物、10-12份发泡助剂、10-12份润滑剂、10-200份成核剂、8-10份交联剂、30-55份发泡剂;
所述大泡孔发泡母片中的发泡剂为放热型发泡剂OBSH;所述小泡孔发泡母片中的发泡剂为吸热型发泡剂NaHCO3。
2.根据权利要求1所述的具有梯度孔结构的发泡材料的制备方法,其特征在于,所述聚合物为LDPE、EVA、POE、OBC、SEBS、EPDM、SBS、SEPS中的一种或多种复合聚合物。
3.根据权利要求1所述的具有梯度孔结构的发泡材料的制备方法,其特征在于,所述润滑剂为硬脂酸及其皂类化合物、硅酮粉、酰胺类化合物中的一种或多种。
4.根据权利要求1所述的具有梯度孔结构的发泡材料的制备方法,其特征在于,所述成核剂为碳酸钙、滑石粉、蒙脱土、二氧化硅、碳纳米管、石墨烯中的一种或多种。
5.根据权利要求1所述的具有梯度孔结构的发泡材料的制备方法,其特征在于,所述交联剂为DCP、BIBP中的一种。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110320094.0A CN113150359B (zh) | 2021-03-25 | 2021-03-25 | 一种具有梯度孔结构的发泡材料的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110320094.0A CN113150359B (zh) | 2021-03-25 | 2021-03-25 | 一种具有梯度孔结构的发泡材料的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113150359A CN113150359A (zh) | 2021-07-23 |
CN113150359B true CN113150359B (zh) | 2022-12-20 |
Family
ID=76884763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110320094.0A Active CN113150359B (zh) | 2021-03-25 | 2021-03-25 | 一种具有梯度孔结构的发泡材料的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113150359B (zh) |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131530A (en) * | 1981-02-10 | 1982-08-14 | Kanto Leather Kk | Manufacture of foamed decorative material |
JPS57203523A (en) * | 1981-06-11 | 1982-12-13 | Kanto Leather Kk | Manufacture of expanded decorative sheet material |
DE4432111C2 (de) * | 1994-08-11 | 2002-10-10 | Gefinex Jackon Gmbh | Verfahren zur Herstellung eines Kunststoffschaumes |
US20030082364A1 (en) * | 2001-10-29 | 2003-05-01 | Jary Michael W. | Foam sheet and a method to manufacture a foam sheet |
CN100396370C (zh) * | 2006-08-15 | 2008-06-25 | 杭州海虹精细化工有限公司 | 一种复合发泡剂及其制备方法 |
EP2921475A1 (en) * | 2014-03-18 | 2015-09-23 | Lanxess Ltd. | Blowing agent |
CN103980520A (zh) * | 2014-05-31 | 2014-08-13 | 全椒祥瑞塑胶有限公司 | 一种塑料发泡剂 |
CN104311869A (zh) * | 2014-10-31 | 2015-01-28 | 武汉理工大学 | 一种酚醛泡沫制备的梯度发泡方法 |
CN104893110B (zh) * | 2015-04-01 | 2017-03-15 | 中国皮革和制鞋工业研究院 | 一种质轻耐磨密度梯度发泡鞋底材料及其制备方法 |
WO2018126219A1 (en) * | 2016-12-29 | 2018-07-05 | Sekisui Voltek, Llc | Heterogeneous foam composition and method |
CN106883446B (zh) * | 2017-03-21 | 2020-04-03 | 合肥华凌股份有限公司 | 微发泡功能母粒组合物及其制备方法以及冰箱发泡板 |
DK3388477T3 (da) * | 2017-04-11 | 2020-01-13 | Armacell Entpr Gmbh & Co Kg | Ekspansionssystem til fleksible isoleringsskummaterialer |
CN109401009A (zh) * | 2018-10-18 | 2019-03-01 | 如皋市鼎泉电子商务有限公司 | 一种三元发泡体系的聚烯烃发泡材料及其制备方法与应用 |
CN112029186B (zh) * | 2020-09-15 | 2022-09-06 | 安踏(中国)有限公司 | 一种复合响应发泡橡塑鞋底、其制备方法和运动鞋 |
CN112500694B (zh) * | 2020-12-04 | 2022-03-29 | 东莞威赢高尔夫用品有限公司 | 一种电子设备贴皮材料及其制备方法 |
-
2021
- 2021-03-25 CN CN202110320094.0A patent/CN113150359B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN113150359A (zh) | 2021-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9217067B2 (en) | Method for producing polypropylene-based resin foamed blow-molded article | |
CN108384244B (zh) | 具有梯度泡孔结构的硅橡胶复合材料及其制备方法 | |
EP1188785B1 (en) | Polyolefin foam and polyolefin resin composition | |
CN101792554B (zh) | 一种微发泡聚丙烯及其制备方法 | |
JP2012126816A (ja) | ポリオレフィン系樹脂発泡粒子成形体の製造方法、及びポリオレフィン系樹脂発泡粒子成形体 | |
CN110511421B (zh) | 一种聚烯烃微孔发泡材料的制备方法 | |
CN111251524B (zh) | 基于梯度温度的梯度多孔聚合物泡沫材料的制备方法 | |
KR20050021912A (ko) | 폴리올레핀 수지 발포체용 조성물, 폴리올레핀 수지발포체, 및 이의 제조방법 | |
CN112457596A (zh) | 一种节能型发泡聚丙烯珠粒及其制备方法 | |
CN104327296B (zh) | 一种混炼型聚氨酯泡沫材料及其制备方法 | |
CN106565977A (zh) | 一种多孔聚乙烯膜的制备方法 | |
CN113150359B (zh) | 一种具有梯度孔结构的发泡材料的制备方法 | |
JP6844065B2 (ja) | 発泡成型体、及びその製造方法 | |
JP3616410B2 (ja) | クッション材 | |
WO2003092982A3 (de) | Verfahren zur herstellung geschäumter polymerformkörper und geschäumter polymerformkörper | |
KR101588233B1 (ko) | 단열성이 우수한 고무 발포단열재와 그 제조방법 | |
WO2018084245A1 (ja) | 発泡粒子及び発泡粒子成形体 | |
US20140171524A1 (en) | Polyvinylidene fluoride resin expanded beads, method for producing polyvinylidene fluoride resin expanded beads, and molded articles of polyvinylidene fluoride resin expanded beads | |
EP2407504B1 (en) | Polyvinylidene fluoride resin expanded beads, and molded articles of polyvinylidene fluoride resin expanded beads | |
JP3758116B2 (ja) | 連続気泡発泡体及びその製造方法 | |
KR20110101434A (ko) | 난연성 경량 플라스틱 및 이의 제조방법 | |
JP2505543B2 (ja) | 結晶性プロピレン系樹脂含有発泡体の製造方法 | |
KR830001834B1 (ko) | 가교풀리올레핀 연속 발포체의 제조 방법 | |
JP3579961B2 (ja) | 熱可塑性樹脂発泡体の製造方法 | |
CN115926335B (zh) | 利用高压气体发泡技术在聚合物表面构筑无皮层多孔结构的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
CB02 | Change of applicant information |
Address after: No. 919, Xinda Road, Xinfeng Town, Nanhu District, Jiaxing City, Zhejiang Province 314000 Applicant after: Zhejiang Xinhengtai New Materials Co.,Ltd. Address before: 314005 south of Xinda highway, west of Renkang Road, Xinfeng Town, Nanhu District, Jiaxing City, Zhejiang Province Applicant before: Zhejiang Xinhengtai Advanced Material Co.,Ltd. |
|
CB02 | Change of applicant information | ||
GR01 | Patent grant | ||
GR01 | Patent grant |