WO2021077433A1 - 一种增强型可溶性聚四氟乙烯及其制备方法 - Google Patents

一种增强型可溶性聚四氟乙烯及其制备方法 Download PDF

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WO2021077433A1
WO2021077433A1 PCT/CN2019/113482 CN2019113482W WO2021077433A1 WO 2021077433 A1 WO2021077433 A1 WO 2021077433A1 CN 2019113482 W CN2019113482 W CN 2019113482W WO 2021077433 A1 WO2021077433 A1 WO 2021077433A1
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pfa
pekk
melt
soluble polytetrafluoroethylene
nucleating agent
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PCT/CN2019/113482
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English (en)
French (fr)
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冯兴文
何发春
黄佳琪
黄学文
李萍
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立昌科技（赣州）有限公司
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    • 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
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • 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
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
    • C08K5/523—Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18—Homopolymers or copolymers or tetrafluoroethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
    • C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
    • C08L81/02—Polythioethers; Polythioether-ethers

Definitions

  • the invention belongs to the technical field of polytetrafluoroethylene preparation, and specifically relates to an enhanced soluble polytetrafluoroethylene and a preparation method thereof. .
  • Polytetrafluoroethylene commonly known as "Plastic King" is a polymer compound formed by polymerization of tetrafluoroethylene. It has excellent chemical stability, corrosion resistance, sealing, high lubrication, non-sticking, electrical insulation and good Anti-aging endurance, used as engineering plastics, can be made into polytetrafluoroethylene pipes, rods, strips, plates, films, etc., generally used in corrosion-resistant pipelines, containers, pumps, valves, and radar systems with high performance requirements.
  • Frequency communication equipment radio equipment, enhanced soluble polytetrafluoroethylene (PFA) is used to prepare anti-friction, wear-resistant parts, seals, insulation that require corrosion resistance, heat resistance, chemical resistance, and electrical properties Parts and medical equipment parts, as well as high-temperature wires and cable insulation layers, anti-corrosion equipment, sealing materials, pump valve bushings and chemical containers, with atmospheric aging resistance, radiation resistance and low permeability, long-term exposure to the atmosphere , Surface and performance remain unchanged.
  • PFA enhanced soluble polytetrafluoroethylene
  • the current polytetrafluoroethylene (PFA) has a relatively high melt viscosity, and it is prone to melt fracture and poor molding in the production of industrial products, causing waste and consumption of raw materials and increasing production costs.
  • the purpose of the present invention is to provide an enhanced soluble polytetrafluoroethylene and a preparation method thereof to solve the problems raised in the background art.
  • an enhanced soluble polytetrafluoroethylene and a preparation method thereof which are made of the following components in terms of mass percentage: PFA: 1-99%, PEKK: 99- 1%, 6-9% of compound nucleating agent.
  • the composite nucleating agent is rubber or PPS, inorganic rigid particles, and organic phosphate nucleating agent mixed in a mass ratio of 5-7:1.5:1.8, and the inorganic rigid particles are selected from the group consisting of talc, kaolin, One of wollastonite and barium sulfate, rubber or PPS surrounds the inorganic rigid particles and organic phosphate nucleating agent to form a shell-core structure.
  • a method for preparing enhanced soluble polytetrafluoroethylene including the following steps: S1. Stir the formulated amount of PFA and PEKK at a temperature of 110-120°C for about 30 minutes, so that PFA and PEKK are evenly mixed to obtain a mixture of PFA and PEKK S2, the mixture of PFA and FEP obtained after the treatment in step 1 is melt-extruded in a melt extruder and cooled to obtain a product;
  • the screw compression ratio is 2-3:1.
  • the melt extruder includes seven heating zones, the initial temperature is 280-285°C, the maximum temperature does not exceed 330°C, the die temperature is 310-320°C, and the screw speed is 35-55r/min.
  • the enhanced soluble polytetrafluoroethylene (PFA) proposed by the present invention is made by blending PFA and polyetherketoneketone (PEKK) by melt extrusion molding, Among them, the ratio of PFA is 1%-99%, and the ratio of PEKK is 99%-1%. The compatibility of the two is good. When the proportion of PFA is relatively small, the extrusion molding material has good flexibility, but the heat resistance and corrosion resistance are reduced.
  • the material obtained by extrusion molding has better flexibility than pure PFA material, and at the same time has the characteristics of high corrosion resistance and heat resistance, and the tensile performance is also enhanced, which improves the appearance of pure PFA in the extrusion process.
  • the problem of melt fracture and poor molding reduce waste and consumption of raw materials, reduce production costs, improve production quality of finished products, and accelerate production efficiency and production speed.
  • Figure 1 is a schematic diagram of the experimental data table of the present invention.
  • the present invention provides an enhanced soluble polytetrafluoroethylene, which is made of the following components in terms of mass percentage: PFA: 90%, PEKK: 10%, and composite nucleating agent 6%.
  • the composite nucleating agent is rubber or PPS, inorganic rigid particles, and organic phosphate nucleating agent mixed in a mass ratio of 5:1.5:1.8, and the inorganic rigid particles are selected from the group consisting of talc, kaolin, wollastonite, and barium sulfate.
  • rubber or PPS surrounds the inorganic rigid particles and organic phosphate nucleating agent to form a shell-core structure.
  • a method for preparing enhanced soluble polytetrafluoroethylene including the following steps: S1. Stir the formula amount of PFA and PEKK at a temperature of 110°C for about 30 minutes to make the PFA and PEKK evenly mixed to obtain a mixture of PFA and PEKK; S2 , The mixture of PFA and FEP obtained after the treatment in step 1 is melt-extruded in a melt extruder and cooled to obtain a product;
  • the screw compression ratio is 2:1.
  • the melt extruder includes seven heating zones, the initial temperature is 280°C, the maximum temperature does not exceed 330°C, the die temperature is 310°C, and the screw speed is 35r/min.
  • the use process of this embodiment Stir the formulated amount of PFA and PEKK at a temperature of 110°C for about 30 minutes to mix the PFA and PEKK uniformly to obtain a mixture of PFA and PEKK, and then combine the PFA and FEP obtained after heating and stirring.
  • the mixture is melt extruded and cooled in a melt extruder with a screw compression ratio of 2:1, an initial temperature of 280°C, a maximum temperature of not more than 330°C, a die temperature of 310°C, and a screw speed of 35r/min. Get the product.
  • the present invention provides an enhanced soluble polytetrafluoroethylene, which is made of the following components in terms of mass percentage: PFA: 70%, PEKK: 1%, and composite nucleating agent 30%.
  • the composite nucleating agent is rubber or PPS, inorganic rigid particles, and organic phosphate nucleating agent mixed in a mass ratio of 7:1.5:1.8, and the inorganic rigid particles are selected from the group consisting of talc, kaolin, wollastonite, and barium sulfate.
  • rubber or PPS surrounds the inorganic rigid particles and organic phosphate nucleating agent to form a shell-core structure.
  • a method for preparing enhanced soluble polytetrafluoroethylene including the following steps: S1. Stir the formulated amount of PFA and PEKK at a temperature of 120°C for about 30 minutes to make the PFA and PEKK evenly mixed to obtain a mixture of PFA and PEKK; S2 , The mixture of PFA and FEP obtained after the treatment in step 1 is melt-extruded in a melt extruder and cooled to obtain a product;
  • the screw compression ratio is 3:1.
  • the melt extruder includes seven heating zones, the initial temperature is 285°C, the maximum temperature does not exceed 330°C, the die temperature is 320°C, and the screw speed is 40r/min.
  • the use process of this embodiment Stir the formulated amount of PFA and PEKK at a temperature of 120°C for about 30 minutes to mix the PFA and PEKK uniformly to obtain a mixture of PFA and PEKK, and then combine the PFA and FEP obtained after heating and stirring.
  • the mixture is melt-extruded and cooled in a melt extruder with a screw compression ratio of 3:1, an initial temperature of 285°C, a maximum temperature of not more than 330°C, a die temperature of 320°C, and a screw speed of 40r/min. Get the product.
  • the present invention provides an enhanced soluble polytetrafluoroethylene, which is made of the following components in terms of mass percentage: PFA: 20%, PEKK: 80%, and composite nucleating agent 8%.
  • the composite nucleating agent is rubber or PPS, inorganic rigid particles, and organic phosphate nucleating agent at a mass ratio of 6:1.5:1.8.
  • the inorganic rigid particles are selected from the group consisting of talc, kaolin, wollastonite and barium sulfate.
  • rubber or PPS surrounds the inorganic rigid particles and organic phosphate nucleating agent to form a shell-core structure.
  • a preparation method of enhanced soluble polytetrafluoroethylene includes the following steps:
  • the screw compression ratio is 2.5:1.
  • the melt extruder includes seven heating zones, the initial temperature is 283°C, the maximum temperature does not exceed 330°C, the die temperature is 315°C, and the screw speed is 55r/min.
  • the use process of this embodiment Stir the formulated amount of PFA and PEKK at a temperature of 120°C for about 30 minutes to mix the PFA and PEKK uniformly to obtain a mixture of PFA and PEKK, and then combine the PFA and FEP obtained after heating and stirring.
  • the mixture is melt extruded and cooled in a melt extruder with a screw compression ratio of 3:1, an initial temperature of 285°C, a maximum temperature of not more than 330°C, a die temperature of 320°C, and a screw speed of 40r/min. Get the product.
  • the present invention provides an enhanced soluble polytetrafluoroethylene, which is made of the following components in terms of mass percentage: PFA: 10%, PEKK: 90%, and composite nucleating agent 7%.
  • the composite nucleating agent is rubber or PPS, inorganic rigid particles, and organic phosphate nucleating agent mixed in a mass ratio of 7:1.5:1.8, and the inorganic rigid particles are selected from the group consisting of talc, kaolin, wollastonite, and barium sulfate.
  • rubber or PPS surrounds the inorganic rigid particles and organic phosphate nucleating agent to form a shell-core structure.
  • An enhanced soluble polytetrafluoroethylene preparation method including the following steps: S1. Stir the formulated amount of PFA and PEKK at a temperature of 115°C for about 30 minutes to make the PFA and PEKK uniformly mixed to obtain a mixture of PFA and PEKK; S2 , The mixture of PFA and FEP obtained after the treatment in step 1 is melt-extruded in a melt extruder and cooled to obtain a product;
  • the screw compression ratio is 3:1.
  • the melt extruder includes seven heating zones, the initial temperature is 285°C, the maximum temperature does not exceed 330°C, the die temperature is 310°C, and the screw speed is 50r/min.
  • the use process of this embodiment stir the formulated amount of PFA and PEKK at a temperature of 115°C for about 30 minutes to mix the PFA and PEKK uniformly to obtain a mixture of PFA and PEKK, and then combine the PFA and FEP obtained after heating and stirring.
  • the mixture is melt extruded and cooled in a melt extruder with a screw compression ratio of 3:1, an initial temperature of 285°C, a maximum temperature of not more than 330°C, a die temperature of 310°C, and a screw speed of 50r/min. Get the product.
  • the present invention provides an enhanced soluble polytetrafluoroethylene, which is made of the following components in terms of mass percentage: PFA: 80%, PEKK: 20%, and composite nucleating agent 7%.
  • the composite nucleating agent is rubber or PPS, inorganic rigid particles, and organic phosphate nucleating agent at a mass ratio of 6:1.5:1.8.
  • the inorganic rigid particles are selected from the group consisting of talc, kaolin, wollastonite and barium sulfate.
  • rubber or PPS surrounds the inorganic rigid particles and organic phosphate nucleating agent to form a shell-core structure.
  • a method for preparing enhanced soluble polytetrafluoroethylene including the following steps: S1. Stir the formula amount of PFA and PEKK at a temperature of 110°C for about 30 minutes to make the PFA and PEKK evenly mixed to obtain a mixture of PFA and PEKK; S2 , The mixture of PFA and FEP obtained after the treatment in step 1 is melt-extruded in a melt extruder and cooled to obtain a product;
  • the screw compression ratio is 2:1.
  • the melt extruder includes seven heating zones, the initial temperature is 280°C, the maximum temperature does not exceed 330°C, the die temperature is 320°C, and the screw speed is 40r/min.
  • the use process of this embodiment Stir the formulated amount of PFA and PEKK at a temperature of 110°C for about 30 minutes to mix the PFA and PEKK uniformly to obtain a mixture of PFA and PEKK, and then combine the PFA and FEP obtained after heating and stirring.
  • the mixture is melt extruded and cooled in a melt extruder with a screw compression ratio of 2:1, an initial temperature of 280°C, a maximum temperature of not more than 330°C, a die temperature of 320°C, and a screw speed of 40r/min. Get the product.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

一种增强型可溶性聚四氟乙烯及其制备方法，包括以下步骤：将配方量的PFA、PEKK在110-120℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物，将经过处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；增强型可溶性聚四氟乙烯（PFA）是通过将PFA与聚醚酮酮（PEKK）共混熔融挤出成型制得，两者相容性较好，当PFA占比较小时，挤出成型得到的材料柔性好，但是耐热性、耐腐蚀下降，当PFA占比较大时，挤出成型得到的材料，具有优于纯PFA材料的柔性，同时具有高耐腐耐热的特点，拉伸性能也得到增强，改善了纯PFA挤出过程中出现的熔体破裂、成型不良问题。

Description

一种增强型可溶性聚四氟乙烯及其制备方法 技术领域
本发明属于聚四氟乙烯制备技术领域，具体涉及一种增强型可溶性聚四氟乙烯及其制备方法。。
 背景技术
聚四氟乙烯，俗称“塑料王”，是由四氟乙烯经聚合而成的高分子化合物，具有优良的化学稳定性、耐腐蚀性、密封性、高润滑不粘性、电绝缘性和良好的抗老化耐力，用作工程塑料，可制成聚四氟乙烯管、棒、带、板、薄膜等，一般应用于性能要求较高的耐腐蚀的管道、容器、泵、阀以及制雷达、高频通讯器材、无线电器材，增强型可溶性聚四氟乙烯（PFA），是用于制备对耐腐蚀、耐热性、耐化学试剂性和电气性有要求的减磨耐磨件、密封件、绝缘件和医疗器械零件，以及高温电线、电缆绝缘层，防腐设备、密封材料、泵阀衬套和化学容器，具有耐大气老化性、耐辐照性能和较低的渗透性，长期暴露于大气中，表面及性能保持不变。
 技术问题
目前的聚四氟乙烯（PFA）熔融粘度较高，在工业产品的生产中很容易出现熔体破裂、成型不良等现象，造成原料浪费和消耗，增加生产成本。
 技术解决方案
本发明的目的在于提供一种增强型可溶性聚四氟乙烯及其制备方法，以解决上述背景技术中提出的问题。
为实现上述目的，本发明采用了如下技术方案：一种增强型可溶性聚四氟乙烯及其制备方法，由按照质量百分数计的如下组分制成：PFA：1-99%、PEKK：99-1%、复合成核剂6-9％。
优选的，所述复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比5-7：1.5：1.8进行混合，所述无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
一种增强型可溶性聚四氟乙烯制备方法，包括以下步骤：S1、将配方量的PFA、PEKK在110-120℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；
优选的，所述熔融挤出处理中，螺杆压缩比为2-3:1。
优选的，所述熔融挤出机包括七个加热区，起始温度为280-285℃，最高温度不超过330℃，模口温度为310-320℃，螺杆转速为35-55r/min。
 有益效果
本发明的技术效果和优点：与现有技术相比，本发明提出的增强型可溶性聚四氟乙烯（PFA）是通过将PFA与聚醚酮酮（PEKK）共混熔融挤出成型制得，其中PFA比例为1%-99%、PEKK比例为99%-1%，两者相容性较好，当PFA占比较小时，挤出成型得到的材料柔性好，但是耐热性、耐腐蚀下降，当PFA占比较大时，挤出成型得到的材料，具有优于纯PFA材料的柔性，同时具有高耐腐耐热的特点，拉伸性能也得到增强，改善了纯PFA挤出过程中出现的熔体破裂、成型不良问题，减少原料浪费和消耗，降低生产成本，提高成品生产质量，加快生产效率和生产速度。
 附图说明
在附图用来提供对本发明的进一步理解，并且构成说明书的一部分，与本发明的实施例一起用于解释本发明，并不构成对本发明的限制。在附图中：图1为本发明的实验数据表示意图。
 本发明的实施方式
在下面将结合本发明中的附图，对本发明实施例中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。此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。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。
实施例1
请参阅图1，本发明提供了一种增强型可溶性聚四氟乙烯，由按照质量百分数计的如下组分制成：PFA：90%、PEKK：10%、复合成核剂6％。
具体的，复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比5：1.5：1.8进行混合，无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
一种增强型可溶性聚四氟乙烯制备方法，包括以下步骤：S1、将配方量的PFA、PEKK在110℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；
具体的，熔融挤出处理中，螺杆压缩比为2:1。
具体的，熔融挤出机包括七个加热区，起始温度为280℃，最高温度不超过330℃，模口温度为310℃，螺杆转速为35r/min。
本实施例的使用流程：将配方量的PFA、PEKK在110℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物，再将经过加热搅拌处理后得到的PFA和FEP的混合物在螺杆压缩比为2:1、起始温度为280℃，最高温度不超过330℃，模口温度为310℃，螺杆转速为35r/min的熔融挤出机中熔融挤出，冷却，得到产品。
实施例2
请参阅图1，本发明提供了一种增强型可溶性聚四氟乙烯，由按照质量百分数计的如下组分制成：PFA：70%、PEKK：1%、复合成核剂30％。
具体的，复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比7：1.5：1.8进行混合，无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
一种增强型可溶性聚四氟乙烯制备方法，包括以下步骤：S1、将配方量的PFA、PEKK在120℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；
具体的，熔融挤出处理中，螺杆压缩比为3:1。
具体的，熔融挤出机包括七个加热区，起始温度为285℃，最高温度不超过330℃，模口温度为320℃，螺杆转速为40r/min。
本实施例的使用流程：将配方量的PFA、PEKK在120℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物，再将经过加热搅拌处理后得到的PFA和FEP的混合物在螺杆压缩比为3:1、起始温度为285℃，最高温度不超过330℃，模口温度为320℃，螺杆转速为40r/min的熔融挤出机中熔融挤出，冷却，得到产品。
实施例3
请参阅图1，本发明提供了一种增强型可溶性聚四氟乙烯，由按照质量百分数计的如下组分制成：PFA：20%、PEKK：80%、复合成核剂8％。
具体的，复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比6：1.5：1.8进行混合，无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
一种增强型可溶性聚四氟乙烯制备方法，包括以下步骤：
S1、将配方量的PFA、PEKK在115℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；
具体的，熔融挤出处理中，螺杆压缩比为2.5:1。
具体的，熔融挤出机包括七个加热区，起始温度为283℃，最高温度不超过330℃，模口温度为315℃，螺杆转速为55r/min。
本实施例的使用流程：将配方量的PFA、PEKK在120℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物，再将经过加热搅拌处理后得到的PFA和FEP的混合物在螺杆压缩比为3:1、起始温度为285℃，最高温度不超过330℃，模口温度为320℃，螺杆转速为40r/min的熔融挤出机中熔融挤出，冷却，得到产品。
实施例4
请参阅图1，本发明提供了一种增强型可溶性聚四氟乙烯，由按照质量百分数计的如下组分制成：PFA：10%、PEKK：90%、复合成核剂7％。
具体的，复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比7：1.5：1.8进行混合，无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
一种增强型可溶性聚四氟乙烯制备方法，包括以下步骤：S1、将配方量的PFA、PEKK在115℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；
具体的，熔融挤出处理中，螺杆压缩比为3:1。
具体的，熔融挤出机包括七个加热区，起始温度为285℃，最高温度不超过330℃，模口温度为310℃，螺杆转速为50r/min。
本实施例的使用流程：将配方量的PFA、PEKK在115℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物，再将经过加热搅拌处理后得到的PFA和FEP的混合物在螺杆压缩比为3:1、起始温度为285℃，最高温度不超过330℃，模口温度为310℃，螺杆转速为50r/min的熔融挤出机中熔融挤出，冷却，得到产品。
实施例5
请参阅图1，本发明提供了一种增强型可溶性聚四氟乙烯，由按照质量百分数计的如下组分制成：PFA：80%、PEKK：20%、复合成核剂7％。
具体的，复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比6：1.5：1.8进行混合，无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
一种增强型可溶性聚四氟乙烯制备方法，包括以下步骤：S1、将配方量的PFA、PEKK在110℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品；
具体的，熔融挤出处理中，螺杆压缩比为2:1。
具体的，熔融挤出机包括七个加热区，起始温度为280℃，最高温度不超过330℃，模口温度为320℃，螺杆转速为40r/min。
本实施例的使用流程：将配方量的PFA、PEKK在110℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物，再将经过加热搅拌处理后得到的PFA和FEP的混合物在螺杆压缩比为2:1、起始温度为280℃，最高温度不超过330℃，模口温度为320℃，螺杆转速为40r/min的熔融挤出机中熔融挤出，冷却，得到产品。
本发明的实验数据如图1所示。
最后应说明的是：以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，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. 一种增强型可溶性聚四氟乙烯，其特征在于：由按照质量百分数计的如下组分制成：PFA：1-99%、PEKK：99-1%、复合成核剂6-9％。
  2. 根据权利要求1所述的一种增强型可溶性聚四氟乙烯，其特征在于：所述复合成核剂为橡胶或PPS、无机刚性粒子、有机磷酸盐成核剂按质量比5-7：1.5：1.8进行混合，所述无机刚性粒子选自、滑石粉、高岭土、硅灰石以及硫酸钡中的一种，橡胶或PPS包围于无机刚性粒子、有机磷酸盐成核剂外形成壳-核结构。
  3. 根据权利要求1所述的一种增强型可溶性聚四氟乙烯制备方法，其特征在于：包括以下步骤：S1、将配方量的PFA、PEKK在110-120℃的温度下搅拌30min左右，使PFA、PEKK混合均匀，得到PFA和PEKK的混合物；S2、将经过步骤1处理后得到的PFA和FEP的混合物在熔融挤出机中熔融挤出，冷却，得到产品。
  4. 根据权利要求1所述的一种增强型可溶性聚四氟乙烯制备方法，其特征在于：所述熔融挤出处理中，螺杆压缩比为2-3:1。
  5. 根据权利要求1所述的一种增强型可溶性聚四氟乙烯制备方法，其特征在于：所述熔融挤出机包括七个加热区，起始温度为280-285℃，最高温度不超过330℃，模口温度为310-320℃，螺杆转速为35-55r/min。
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EP0893471A1 (en) * 1997-07-25 1999-01-27 E.I. Du Pont De Nemours And Company Blends of fluoroplastics with polyetherketoneketone
US20010016625A1 (en) * 1998-06-15 2001-08-23 Jacob Lahijani Melt-fabricable polytetrafluoroethylene
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