WO2014101670A1 - Air-permeable masterbatch and method for producing air-permeable film therefrom - Google Patents

Air-permeable masterbatch and method for producing air-permeable film therefrom Download PDF

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Publication number
WO2014101670A1
WO2014101670A1 PCT/CN2013/089321 CN2013089321W WO2014101670A1 WO 2014101670 A1 WO2014101670 A1 WO 2014101670A1 CN 2013089321 W CN2013089321 W CN 2013089321W WO 2014101670 A1 WO2014101670 A1 WO 2014101670A1
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Prior art keywords
water
masterbatch
film
breathable
air
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PCT/CN2013/089321
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French (fr)
Chinese (zh)
Inventor
陈贤裕
张朝益
张朝凯
佘维深
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广东美联新材料股份有限公司
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Priority to RU2014142607/04A priority Critical patent/RU2593590C2/en
Publication of WO2014101670A1 publication Critical patent/WO2014101670A1/en

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    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • 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
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • 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
    • 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
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene

Definitions

  • the present invention relates to a gas permeable masterbatch, and more particularly to a process for producing a water vapor permeable film using the gas permeable masterbatch. Background technique
  • the gas permeable membrane is a film made of polymer materials through a specific production process technology with tens of thousands of micropores (apertures of a few micrometers to several tens of micrometers), which is characterized by gas permeable and watertight, which allows water Gases such as steam and air pass, but liquids are not allowed to pass.
  • breathable films have been widely used in personal hygiene products such as baby diapers, medical clothing, medical gauze, breathable tarpaulin, raincoat, food packaging, crop preservation, and building waterproofing.
  • the common production method of gas permeable membrane is to add a certain proportion of inorganic fillers such as calcium carbonate and talc to the polymer, and then extruding into a sheet/film through a screw, and then stretching in the transverse direction and the longitudinal direction during the stretching process.
  • inorganic fillers such as calcium carbonate and talc
  • the binding force of the inorganic filler to the surrounding polymer is less than the polymer deformation force caused by the stretching, the polymer is separated along the edge of the inorganic filler particles, thereby generating micropores, the size and morphology of the micropores and the inorganic filler.
  • the particle size, shape and stretching method, stretching ratio and other process conditions are related, the influence parameters are large, the probability of error is large, the controllability of the micropore size is low, the defective product rate is high, and the production is increased.
  • the technical problem to be solved by the present invention is to provide a gas permeable masterbatch which does not contain an inorganic filler, and the composition thereof comprises 90% to 95% of polyolefin and 5% to 10% of water-soluble organic matter.
  • the polyolefin and the water-soluble organic matter are put into a mixer and blended in proportion, and the internal speed of the mixer is
  • the temperature is 150 ⁇ 170 °C; the finished blended material is extruded and granulated to obtain waterproof and breathable functional masterbatch, the extruder speed is 20 ⁇ 50 rev / min, the temperature is 130 °C ⁇ 180°C.
  • the polyolefin is polyethylene or polypropylene, and the water-soluble organic substance is ethylene glycol, glycerin or lactic acid.
  • the invention also provides a method for manufacturing a water-permeable gas permeable membrane, which is manufactured by a new process and will be breathable After the masterbatch is cast into a film, the water-soluble organic matter therein is dissolved by water vapor, and the water-soluble organic matter uniformly distributed on the cast film is dissolved to leave pores which can block the passage of air and block the water molecule group, thereby A water-permeable and breathable film is produced, and the steps of the method include:
  • the temperature of the casting machine barrel is 200 to 220 ° C
  • the temperature of the die is 225 ° C to 235 ° C
  • the linear speed of the casting machine is 85 to 95 m / min.
  • the process reduces the influence of the stretching process of the conventional gas permeable membrane.
  • the stretching temperature is too low, the molecular chain is difficult to move. At this time, the stretching is forced by the external force, and the structure of the gas permeable membrane is destroyed, so that the strength of the gas permeable membrane is lowered;
  • the temperature is too high, the gas permeable membrane is excessively softened, and cracks are easily generated, which affects the water barrier effect.
  • the ethylene glycol, glycerol or lactic acid Since the ethylene glycol, glycerol or lactic acid has a small molecular weight, it can be cast and stretched after being sufficiently dispersed into a master batch, so that it can be uniformly distributed in the cast film, and the cast film can be drawn to the steam.
  • water vapor is used to dissolve the water-soluble organic matter to form micropores which are smaller than the water molecule agglomerate and larger than air or water vapor molecules, thereby achieving the functions of gas permeable and waterproof.
  • the gas permeable membrane prepared by the above method is subjected to porosity detection, and the detection formula is:
  • ⁇ Ll3 ⁇ 4 ( pt _ pt I ⁇ t X 100%)
  • the porosity of the gas permeable membrane obtained by the invention is 32% to 36%
  • the air permeability is 2800 ⁇ 3100g/square/24 hours
  • the hydrostatic pressure is 1.6 ⁇ 1.8 meters.
  • the parameters affecting the effect of the water-permeable gas permeable membrane are greatly reduced, the stretching process is reduced, the controllability of the gas permeability and the like is increased, the product defect rate is lowered, the product quality is improved, and the waste product is reduced.
  • the production cost is saved, and there is no problem that the inorganic filler particles and the edge of the polymer are combined, which can effectively extend the service life of the product.
  • Figure 1 is a flow chart of the production process of the present invention.
  • Polyethylene and ethylene glycol were put into an internal mixer according to the above ratio, and the temperature of the internal mixer was 150 ° C. After mixing for 5 minutes, the mixture was granulated by a twin-screw extruder to obtain a gas permeable master batch, and extruded.
  • the machine speed is 30 rpm
  • the temperature is 130 ° C, 140 ° C, 150 ° C, 150 ° C, 155 ° C, 160 ° C.
  • the prepared gas permeable masterbatch is cast into a film, the casting machine barrel temperature is 250 ° C, the die temperature is 260 ° C, the casting machine linear velocity is 85 m / min, and the obtained cast film is cooled.
  • Stereotype winding The wound film was taken up in a steam hot water tank for 2 minutes, the water-soluble organic matter in the film was dissolved, and the obtained water-permeable gas-permeable film was dried and wound up.
  • the polypropylene and the lactic acid are put into an internal mixer according to the above ratio, the temperature of the internal mixer is 180 ° C, and after 10 minutes of mixing, the extrusion granulation is performed by a twin-screw extruder to obtain a gas permeable master batch, and the extruder speed is obtained. 50 rpm, temperature 150 ° C, 160 ° C, 170 ° C, 165 ° C, 175 V, 180 ° C.
  • the prepared gas permeable masterbatch is cast into a film, the temperature of the casting machine barrel is 260 ° C, the temperature of the die is 280 ° C, the linear speed of the casting machine is 95 m / min, and the obtained cast film is cooled. Stereotype winding. The wound film was taken up in a steam hot water tank for 5 minutes, the water-soluble organic matter in the film was dissolved, and the obtained water-permeable gas-permeable film was dried and wound up.
  • Polyethylene and glycerol were put into the mixer at the above ratio, and the temperature of the internal mixer was 160 ° C.
  • extrusion granulation was carried out by a twin-screw extruder to obtain a gas permeable master batch.
  • the extruder was rotated at 40 rpm, and the temperature was 130 ° C, 140 ° C, 150 ° C, 155 ° C, 160 °. C, 160 ° C.
  • the prepared gas permeable masterbatch is cast into a film, the temperature of the casting machine barrel is 250 ° C, the temperature of the die is 260 ° C, the linear speed of the casting machine is 90 m / min, and the obtained cast film is cooled. Stereotype winding.

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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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

Disclosed is an air-permeable masterbatch, comprising 90-95% of polyolefin(s) and 5-10% of water-soluble organic compound(s), wherein the polyolefin is polyethylene or polypropylene, and the water-soluble organic compound is ethylene glycol, glycerol or lactic acid. Also disclosed is a method for producing water-proof air-permeable film from the air-permeable masterbatch. Implementing the invention can greatly reduce the parameters influencing the air-permeable effect of the water-proof air-permeable film, omit the tension process, increase the controllability of properties such as air-permeability, contribute to reduce the product defect rate, improve the product quality, reduce the generation of the waste and save the production cost. Furthermore, the problem caused by the edge binding force between an inorganic filler particle and a polymer can be avoid, and the service life of the product can be effectively prolonged.

Description

一种透气母粒及利用该母粒制造透气膜的方法 技术领域  Breathable masterbatch and method for manufacturing gas permeable membrane using the same
本发明涉及一种透气母粒， 尤其涉及利用该透气母粒制造隔水透气膜的方 法。 背景技术  The present invention relates to a gas permeable masterbatch, and more particularly to a process for producing a water vapor permeable film using the gas permeable masterbatch. Background technique
透气膜是一种由高分子材料经过特定的生产工艺技术制造而成的带有数以 万计微孔（孔径为零点几微米到几十微米） 的薄膜， 其特点是透气不透水， 它允 许水蒸气、 空气等气体通过， 但不允许液体通过。 目前， 透气薄膜已广泛用于婴 儿尿不湿等个人卫生用品如、 医疗服装、 医用纱布、 透气性防雨布、 雨衣、 食品 包装、 农作物保鲜、 建筑防水等领域。  The gas permeable membrane is a film made of polymer materials through a specific production process technology with tens of thousands of micropores (apertures of a few micrometers to several tens of micrometers), which is characterized by gas permeable and watertight, which allows water Gases such as steam and air pass, but liquids are not allowed to pass. At present, breathable films have been widely used in personal hygiene products such as baby diapers, medical clothing, medical gauze, breathable tarpaulin, raincoat, food packaging, crop preservation, and building waterproofing.
现在常见的透气膜生产方法是在聚合物添加入一定比例的碳酸钙、滑石粉等 无机填料， 经过螺杆挤出成片材 /薄膜后， 再进行横向及纵向的拉伸， 在拉伸过 程中， 当无机填料与其周围的聚合物的结合力小于拉伸所引起的聚合物变形力 时， 聚合物会沿着无机填料颗粒的边缘分离， 从而产生微孔， 微孔的大小和形态 与无机填料的粒径、 形态和拉伸方式、 拉伸倍数等工艺条件有关， 影响参数多， 出现误差的几率大， 微孔大小的可控性较低， 生产出来的产品次品率高， 增加了 生产的成本， 而且在长期使用后， 由于薄膜老化， 无机填料的颗粒边缘与聚合物 结合力变小， 会使无机填料的颗粒脱落， 从而影响隔水效果。 发明内容  Nowadays, the common production method of gas permeable membrane is to add a certain proportion of inorganic fillers such as calcium carbonate and talc to the polymer, and then extruding into a sheet/film through a screw, and then stretching in the transverse direction and the longitudinal direction during the stretching process. When the binding force of the inorganic filler to the surrounding polymer is less than the polymer deformation force caused by the stretching, the polymer is separated along the edge of the inorganic filler particles, thereby generating micropores, the size and morphology of the micropores and the inorganic filler. The particle size, shape and stretching method, stretching ratio and other process conditions are related, the influence parameters are large, the probability of error is large, the controllability of the micropore size is low, the defective product rate is high, and the production is increased. The cost, and after long-term use, due to the aging of the film, the particle edge of the inorganic filler and the polymer binding force become smaller, which will cause the particles of the inorganic filler to fall off, thereby affecting the water-blocking effect. Summary of the invention
本发明所要解决的技术问题在于， 提供一种透气母粒， 其不含无机填料， 其组分包括聚烯烃 90%~95%及水溶性有机物 5%~10%，  The technical problem to be solved by the present invention is to provide a gas permeable masterbatch which does not contain an inorganic filler, and the composition thereof comprises 90% to 95% of polyolefin and 5% to 10% of water-soluble organic matter.
按比例将聚烯烃和水溶性有机物投入密炼机共混密炼， 密炼机转速为 The polyolefin and the water-soluble organic matter are put into a mixer and blended in proportion, and the internal speed of the mixer is
200~500转 /分钟，温度为 150~170°C ;将完成共混的物料进行挤出造粒制得防 水透气的功能母粒， 挤出机转速为 20~50转 /分钟， 温度为 130°C~180°C。 其中， 所述聚烯烃为聚乙烯或聚丙烯， 所述水溶性有机物为乙二醇、丙三醇 或乳酸。 200~500 rev / min, the temperature is 150~170 °C; the finished blended material is extruded and granulated to obtain waterproof and breathable functional masterbatch, the extruder speed is 20~50 rev / min, the temperature is 130 °C~180°C. Wherein the polyolefin is polyethylene or polypropylene, and the water-soluble organic substance is ethylene glycol, glycerin or lactic acid.
本发明还提供一种制造隔水透气膜的方法，采用新的工艺方式制造，将透气 母粒流延成膜之后，利用水蒸汽将其中的水溶性有机物溶解，均匀分布于流延膜 上的水溶性有机物被溶解后留下可容空气通过而能阻隔水分子团的微孔，从而制 得隔水透气的薄膜， 该方法的步骤包括： The invention also provides a method for manufacturing a water-permeable gas permeable membrane, which is manufactured by a new process and will be breathable After the masterbatch is cast into a film, the water-soluble organic matter therein is dissolved by water vapor, and the water-soluble organic matter uniformly distributed on the cast film is dissolved to leave pores which can block the passage of air and block the water molecule group, thereby A water-permeable and breathable film is produced, and the steps of the method include:
( 1 )采用流延工艺将透气母粒进行流延、冷却定型、收卷得到聚烯烃流延膜； (2) 将步骤 （1 ) 制得的聚烯烃流延薄膜牵引经过蒸汽热水槽， 使薄膜中的 水溶性有机物溶解， 形成具有透气微孔的隔水透气膜， 经干燥后进行收卷。  (1) casting and tempering the gas permeable masterbatch by a casting process to obtain a polyolefin cast film; (2) drawing the polyolefin cast film obtained in the step (1) through a steam hot water bath; The water-soluble organic substance in the film is dissolved to form a water-permeable gas permeable membrane having gas permeable micropores, which is dried and then wound up.
较佳地， 流延机料筒温度为 200~220°C， 模头温度为 225°C~235°C， 流延机 的线速度为 85~95m/min。  Preferably, the temperature of the casting machine barrel is 200 to 220 ° C, the temperature of the die is 225 ° C to 235 ° C, and the linear speed of the casting machine is 85 to 95 m / min.
该工艺减少了传统透气膜的拉伸工艺影响， 当拉伸温度过低时， 分子链运 动困难，此时的拉伸是外力强行拉扯，会破坏透气膜的结构，使透气膜强度降低； 而当温度过高， 则会使透气膜过度软化， 容易产生缝隙， 影响隔水效果。  The process reduces the influence of the stretching process of the conventional gas permeable membrane. When the stretching temperature is too low, the molecular chain is difficult to move. At this time, the stretching is forced by the external force, and the structure of the gas permeable membrane is destroyed, so that the strength of the gas permeable membrane is lowered; When the temperature is too high, the gas permeable membrane is excessively softened, and cracks are easily generated, which affects the water barrier effect.
由于采用的乙二醇、丙三醇或乳酸的分子量较小，在充分分散做成母粒之后 进行流延并拉伸，可以使其均匀分布在流延膜中，将流延膜牵引到蒸汽热水槽中， 利用水蒸汽使水溶性有机物溶解之后形成微孔，该微孔小于水分子团聚体而大于 空气或水蒸气分子， 从而实现透气和防水的功能。  Since the ethylene glycol, glycerol or lactic acid has a small molecular weight, it can be cast and stretched after being sufficiently dispersed into a master batch, so that it can be uniformly distributed in the cast film, and the cast film can be drawn to the steam. In the hot water tank, water vapor is used to dissolve the water-soluble organic matter to form micropores which are smaller than the water molecule agglomerate and larger than air or water vapor molecules, thereby achieving the functions of gas permeable and waterproof.
将上述方法制得的透气膜进行孔隙率检测， 检测公式为：  The gas permeable membrane prepared by the above method is subjected to porosity detection, and the detection formula is:
孑 Ll¾ = ( p t _ p t I ρ t X 100% 经检测， 本发明制得的透气膜孔隙率为 32%~36%， 透气率为 2800~3100g/ 平方 /24小时， 静水压为 1.6~1.8米。  孑Ll3⁄4 = ( pt _ pt I ρ t X 100% After testing, the porosity of the gas permeable membrane obtained by the invention is 32% to 36%, the air permeability is 2800~3100g/square/24 hours, and the hydrostatic pressure is 1.6~ 1.8 meters.
实施本发明， 具有如下有益效果：  The implementation of the present invention has the following beneficial effects:
实施本发明， 使得影响隔水透气膜效果的参数大大减少， 减少了拉伸工艺， 使得其透气率等性能可控性增加， 有助于降低产品次品率， 提高产品品质， 减少 废品产生，节约生产成本，而且不存在无机填料颗粒与聚合物边缘结合力的问题， 可有效延长产品的使用寿命。 附图说明  By implementing the invention, the parameters affecting the effect of the water-permeable gas permeable membrane are greatly reduced, the stretching process is reduced, the controllability of the gas permeability and the like is increased, the product defect rate is lowered, the product quality is improved, and the waste product is reduced. The production cost is saved, and there is no problem that the inorganic filler particles and the edge of the polymer are combined, which can effectively extend the service life of the product. DRAWINGS
图 1是本发明生产工艺流程图。  Figure 1 is a flow chart of the production process of the present invention.
具体实施方式 为使本发明的目的、技术方案和优点更加清楚， 下面将结合具体实施例对本 发明作进一步地详细描述。 detailed description The present invention will be further described in detail below in conjunction with the specific embodiments.
实施例 1  Example 1
聚乙烯 95% ;  Polyethylene 95% ;
乙二醇 5% ;  Ethylene glycol 5% ;
按上述比例将聚乙烯和乙二醇投入密炼机捏合， 密炼机温度为 150°C， 密炼 5分钟后， 利用双螺杆挤出机进行挤出造粒制得透气母粒， 挤出机转速为 30转 / 分钟， 温度为 130°C， 140°C， 150°C， 150°C， 155 °C , 160°C。 将制得的透气母 粒流延成膜， 流延机料筒温度为 250°C， 模头温度为 260°C， 流延机的线速度为 85m/min, 将制得的流延膜冷却定型收卷。 将收卷好的流延膜牵引到蒸汽热水槽 中停留 2分钟， 将薄膜中的水溶性有机物溶解， 将制得的隔水透气膜干燥收卷。  Polyethylene and ethylene glycol were put into an internal mixer according to the above ratio, and the temperature of the internal mixer was 150 ° C. After mixing for 5 minutes, the mixture was granulated by a twin-screw extruder to obtain a gas permeable master batch, and extruded. The machine speed is 30 rpm, the temperature is 130 ° C, 140 ° C, 150 ° C, 150 ° C, 155 ° C, 160 ° C. The prepared gas permeable masterbatch is cast into a film, the casting machine barrel temperature is 250 ° C, the die temperature is 260 ° C, the casting machine linear velocity is 85 m / min, and the obtained cast film is cooled. Stereotype winding. The wound film was taken up in a steam hot water tank for 2 minutes, the water-soluble organic matter in the film was dissolved, and the obtained water-permeable gas-permeable film was dried and wound up.
实施例 2  Example 2
聚丙烯 95% ;  Polypropylene 95% ;
乳酸 5% ;  Lactic acid 5% ;
按上述比例将聚丙烯和乳酸投入密炼机捏合，密炼机温度为 180°C，密炼 10 分钟后， 利用双螺杆挤出机进行挤出造粒制得透气母粒， 挤出机转速为 50转 / 分钟， 温度为 150°C， 160°C， 170 °C , 165 °C , 175 V , 180°C。 将制得的透气母 粒流延成膜， 流延机料筒温度为 260°C， 模头温度为 280°C， 流延机的线速度为 95m/min, 将制得的流延膜冷却定型收卷。 将收卷好的流延膜牵引到蒸汽热水槽 中停留 5分钟， 将薄膜中的水溶性有机物溶解， 将制得的隔水透气膜干燥收卷。 实施例 3  The polypropylene and the lactic acid are put into an internal mixer according to the above ratio, the temperature of the internal mixer is 180 ° C, and after 10 minutes of mixing, the extrusion granulation is performed by a twin-screw extruder to obtain a gas permeable master batch, and the extruder speed is obtained. 50 rpm, temperature 150 ° C, 160 ° C, 170 ° C, 165 ° C, 175 V, 180 ° C. The prepared gas permeable masterbatch is cast into a film, the temperature of the casting machine barrel is 260 ° C, the temperature of the die is 280 ° C, the linear speed of the casting machine is 95 m / min, and the obtained cast film is cooled. Stereotype winding. The wound film was taken up in a steam hot water tank for 5 minutes, the water-soluble organic matter in the film was dissolved, and the obtained water-permeable gas-permeable film was dried and wound up. Example 3
聚乙烯 90% ;  Polyethylene 90% ;
丙三醇 10% ;  Glycerol 10% ;
按上述比例将聚乙烯和丙三醇投入密炼机捏合， 密炼机温度为 160°C， 密炼 Polyethylene and glycerol were put into the mixer at the above ratio, and the temperature of the internal mixer was 160 ° C.
8分钟后利用双螺杆挤出机进行挤出造粒制得透气母粒， 挤出机转速为 40转 /分 钟， 温度为 130°C， 140°C， 150°C， 155 °C , 160°C， 160°C。 将制得的透气母粒 流延成膜， 流延机料筒温度为 250°C， 模头温度为 260°C， 流延机的线速度为 90m/min, 将制得的流延膜冷却定型收卷。 将收卷好的流延膜牵引到蒸汽热水槽 中停留 3分钟， 将薄膜中的水溶性有机物溶解， 将制得的隔水透气膜干燥收卷。 上述三个实施例制得的隔水透气膜其性能见下表。 After 8 minutes, extrusion granulation was carried out by a twin-screw extruder to obtain a gas permeable master batch. The extruder was rotated at 40 rpm, and the temperature was 130 ° C, 140 ° C, 150 ° C, 155 ° C, 160 °. C, 160 ° C. The prepared gas permeable masterbatch is cast into a film, the temperature of the casting machine barrel is 250 ° C, the temperature of the die is 260 ° C, the linear speed of the casting machine is 90 m / min, and the obtained cast film is cooled. Stereotype winding. Pull the rolled cast film to the steam hot water tank After staying for 3 minutes, the water-soluble organic matter in the film was dissolved, and the obtained water-permeable gas-permeable film was dried and wound up. The properties of the water-permeable gas permeable membranes prepared in the above three examples are shown in the following table.
Figure imgf000006_0001
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权 利范围， 因此依本发明权利要求所作的等同变化， 仍属本发明所涵盖的范围。
Figure imgf000006_0001
The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

权利要求书 claims
1、 一种透气母粒， 其特征在于， 包括以下组分： 聚烯烃 90%~95%； 水溶性有机物 5%~10%； 其中， 所述聚烯烃为聚乙烯或聚丙烯， 所述水溶性有机物为乙二醇、 丙三 醇或乳酸。 1. A breathable masterbatch, characterized in that it includes the following components: 90% to 95% polyolefin; 5% to 10% water-soluble organic matter; wherein the polyolefin is polyethylene or polypropylene, and the water-soluble The organic compounds are ethylene glycol, glycerol or lactic acid.
2、 一种制造权利要求 1所述透气母粒的方法， 其特征在于， 包括以下步骤 2. A method for manufacturing the breathable masterbatch according to claim 1, characterized in that it includes the following steps
( 1 )将上述比例的聚烯烃和水溶性有机物投入密炼机捏合密炼，密炼温 度 为 150~180°C， 密炼 5~10分钟； (1) Put the polyolefin and water-soluble organic matter in the above proportion into the internal mixer for kneading and internal mixing, the internal mixing temperature is 150~180°C, and the internal mixing is for 5~10 minutes;
(2)将步骤（1 ) 的物料经双螺杆挤出造粒制得防水透气的功能母粒， 挤出 机转速为 20~50转 /分钟， 温度为 130°C~180°C。 (2) The material in step (1) is granulated through twin-screw extrusion to obtain waterproof and breathable functional masterbatch. The extruder speed is 20~50 rpm and the temperature is 130°C~180°C.
3、 一种采用权利要求 1母粒制造隔水透气膜的方法， 其特征在于， 包括以 下步骤： ( 1 ) 采用流延工艺将透气母粒进行流延、 冷却定型、 收卷得到聚烯烃流延 膜； 3. A method for manufacturing a water-proof and breathable film using the masterbatch of claim 1, characterized in that it includes the following steps: (1) Using a casting process to cast the breathable masterbatch, cool it, shape it, and wind it up to obtain a polyolefin flow extension film;
( 2 )将步骤（1 )制得的聚烯烃流延薄膜牵引经过蒸汽热水槽， 使薄膜中的 水溶性有机物溶解， 形成具有透气微孔的隔水透气膜， 经干燥后进行收卷。 (2) Pull the polyolefin cast film produced in step (1) through a steam hot water tank to dissolve the water-soluble organic matter in the film to form a water-proof and breathable film with breathable micropores, and then roll it up after drying.
4、根据权利要求 3所述的方法，其特征在于，流延机料筒温度为 250~260°C， 模头温度为 260°C~280°C。 4. The method according to claim 3, characterized in that the barrel temperature of the casting machine is 250~260°C, and the die temperature is 260°C~280°C.
5、根据权利要求 3所述的方法，其特征在于，流延机的线速度为 85~95m/min。 5. The method according to claim 3, characterized in that the linear speed of the casting machine is 85~95m/min.
6、 根据权利要求 3所述的方法， 其特征在于， 步骤（2) 中流延膜在蒸汽热 水槽的停留时间为 2~5分钟。 6. The method according to claim 3, characterized in that in step (2), the residence time of the cast film in the steam hot water tank is 2 to 5 minutes.
7、 根据权利要求； Γ6任意一项所述的方法， 其特征在于， 步骤 （2 ) 中的 透气膜通过水蒸汽对其中的水溶性有机物进行刻蚀溶解。 7. The method according to claim 16, wherein the water-soluble organic matter in the breathable film in step (2) is etched and dissolved by water vapor.
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