CN107474308B - 一种微发泡聚丙烯复合材料及其制备方法 - Google Patents

一种微发泡聚丙烯复合材料及其制备方法 Download PDF

Info

Publication number
CN107474308B
CN107474308B CN201710559553.4A CN201710559553A CN107474308B CN 107474308 B CN107474308 B CN 107474308B CN 201710559553 A CN201710559553 A CN 201710559553A CN 107474308 B CN107474308 B CN 107474308B
Authority
CN
China
Prior art keywords
oxide
micro
foaming
parts
composite material
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
Application number
CN201710559553.4A
Other languages
English (en)
Other versions
CN107474308A (zh
Inventor
陈瑶
于建梅
程文超
李禹函
周英辉
陈胜杰
熊值
王传新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU KINGFA TECHNOLOGY NEW MATERIAL Co.,Ltd.
WUHAN KINGFA TECHNOLOGY ENTERPRISE TECHNOLOGY CENTER Co.,Ltd.
Wuhan Kingfa Sci and Tech Co Ltd
Original Assignee
Wuhan Golden Hair Science And Technology Enterprise Technology Center Co Ltd
Wuhan Kingfa Sci and Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Golden Hair Science And Technology Enterprise Technology Center Co Ltd, Wuhan Kingfa Sci and Tech Co Ltd filed Critical Wuhan Golden Hair Science And Technology Enterprise Technology Center Co Ltd
Priority to CN201710559553.4A priority Critical patent/CN107474308B/zh
Publication of CN107474308A publication Critical patent/CN107474308A/zh
Application granted granted Critical
Publication of CN107474308B publication Critical patent/CN107474308B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • 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
    • C08J2205/00—Foams characterised by their properties
    • C08J2205/04—Foams characterised by their properties characterised by the foam pores
    • C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
    • 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
    • C08J2323/14—Copolymers of propene
    • 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
    • C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
    • 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
    • C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
    • C08K2003/2213—Oxides; Hydroxides of metals of rare earth metal of cerium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/14—Applications used for foams

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

本发明公开了一种微发泡聚丙烯复合材料及其制备方法，按重量份数计，包括如下组分：100份聚丙烯；10份‑30份玻璃纤维；1份‑3份稀土氧化物；1份‑5份发泡剂；其制备方法，包括如下步骤：按照配比将聚丙烯、玻璃纤维、稀土氧化物先通过双螺杆挤出机挤出造粒，再将挤出得到的物料与发泡剂进行混合通过注塑机，即得。本发明通过将特定含量的稀土氧化物作为聚丙烯基体的发泡助剂，通过稀土氧化物与发泡剂之间形成配位，活化发泡剂的分解，降低发泡剂的分解温度，从而能够明显提高微发泡聚丙烯复合材料的闭孔率，同时使得制备得到的微发泡聚丙烯复合材料的密度低、流动性高、力学性能特别是冲击强度优异，且加工工艺简单，适于大规模量产。

Description

一种微发泡聚丙烯复合材料及其制备方法
技术领域
本发明涉及高分子材料技术领域，特别涉及一种微发泡聚丙烯复合材料及其制备方法。
背景技术
聚丙烯微发泡材料具有拉伸强度高、密度低、冲击性能优异、隔音隔热等特点，已经广泛应用于汽车行业、包装工业、军事工业、日化用品等领域。特别在汽车领域，良好的尺寸稳定性、耐冲击性可作为汽车的保险杠材料，发泡过后的制品具有亚光性，容易着色等特点，从而适用于汽车内饰件、方向盘等材料。目前，聚丙烯微发泡材料的发泡方法主要有物理发泡法、空心微球发泡法和化学发泡法。物理发泡法主要存在气体发泡剂与熔体相容性差，发泡剂分解出的气体在熔体的作用下导致气泡合并或塌陷，且对成型设备和工艺条件的控制和精度要求较高的缺陷；而空心微球发泡法的优点是成型容易、制造费用廉价、生产周期短、耗能少。但空心微球不能耐高压，在制备过程中容易破裂，不能用连续挤出或注塑等成型方法制备。而目前的化学发泡法存在控制工艺参数复杂的缺陷；特别是对于结晶度较高的聚合物，在升温达到熔融温度后，聚合物的熔体黏度会迅速下降，使发泡过程中产生的气体很容易合并或塌陷，闭孔率低，从而导致流动性和力学性能无法保证。
发明内容
为了克服现有技术的缺点或不足，本发明的首要目的是提供一种闭孔率高、流动性高、密度低、力学性能优异的微发泡聚丙烯复合材料。
本发明的另一目的在于提供上述微发泡聚丙烯复合材料的制备方法。
本发明上述目的通过如下技术方案予以实现：
一种微发泡聚丙烯复合材料，按重量份数计，包括如下组分：
聚丙烯 100份；
玻璃纤维 10份-30份；
稀土氧化物 1份-3份；
发泡剂 1份-5份。
其中，所述聚丙烯选自均聚聚丙烯和/或共聚聚丙烯。
其中，所述稀土氧化物选自镧系元素的氧化物或者镧系元素的氧化物与其他元素的氧化物的复配物；所述镧系元素选自镧、铈、镨、钕、钷、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥中的一种或几种；所述其他元素的氧化物选自钪、钇中的一种或几种。
其中，所述镧系元素的氧化物与其他元素的氧化物的复配物中镧系元素的氧化物与其他元素的氧化物的复配重量比为1：0.5-1：3，优选为1：1-1：2。
当镧系元素的氧化物与其他元素的氧化物的复配重量比小于1：3，闭孔率低，产品强度低；当镧系元素的氧化物与其他元素的氧化物的复配重量比大于1：0.5，产品发泡效率差，材料密度高。
其中，所述发泡剂选自偶氮二甲酰胺、甲苯磺酰氨基脲、4,4’-二磺酰肼二苯醚、N,N’-二亚硝基五次甲基四胺中的一种或几种。
一种上述微发泡聚丙烯复合材料的制备方法，包括如下步骤：
按照配比将聚丙烯、玻璃纤维、稀土氧化物先通过双螺杆挤出机挤出造粒，再将挤出得到的物料与发泡剂进行混合通过注塑机，得到微发泡聚丙烯复合材料。
其中，所述挤出机各段的条件为第一段：180℃、第二段：210℃、第三段：220℃、第四段：220℃、模口：200℃。
本发明与现有技术相比，具有如下有益效果：
1）本发明通过将特定含量的稀土氧化物作为聚丙烯基体的发泡助剂，通过稀土氧化物与发泡剂之间形成配位，活化发泡剂的分解，降低发泡剂的分解温度，从而能够明显提高微发泡聚丙烯复合材料的闭孔率，同时使得制备得到的微发泡聚丙烯复合材料的密度低、流动性高、力学性能特别是冲击强度优异。
2）本发明的微发泡聚丙烯复合材料的加工工艺简单，适于大规模量产。
具体实施方式
下面通过具体实施方式来进一步说明本发明，以下实施例为本发明较佳的实施方式，但本发明的实施方式并不受下述实施例的限制。
本发明的实施例及对比例采用如下原料，但不仅限于这些原料：
聚丙烯：共聚聚丙烯，PP EP548R，中海壳牌；
玻璃纤维：巨石玻纤；
稀土氧化物：镧系元素的氧化物：三氧化二镧La2O3，淄博瑞博康化工稀土材料有限公司；
三氧化二钐Sm2O3，淄博瑞博康化工稀土材料有限公司；
氧化铈CeO2，淄博瑞博康化工稀土材料有限公司；
其他元素的氧化物：氧化钪，淄博瑞博康化工稀土材料有限公司；
氧化钇，淄博瑞博康化工稀土材料有限公司；
发泡剂：偶氮二甲酰胺，潍坊其鸿贸易有限公司；
甲苯磺酰氨基脲，潍坊其鸿贸易有限公司；
4,4’-二磺酰肼二苯醚，潍坊其鸿贸易有限公司；
各性能指标的测试方法如表1所示：
表1
实施例1-13及对比例1-6：微发泡聚丙烯复合材料的制备
按照表2的配比将聚丙烯、玻璃纤维、稀土氧化物先通过双螺杆挤出机挤出造粒，再将挤出得到的物料与发泡剂进行混合通过注塑机，得到微发泡聚丙烯复合材料；所述挤出机各段的条件为200℃、210℃、220℃、220℃、200℃。制备得到的微发泡聚丙烯复合材料的闭孔率、熔体流动速率、密度、HDT、拉伸强度、弯曲强度和缺口冲击强度的性能测试结果如表2所示。
表2 实施例1-13及对比例1-6的各组分配比（重量份）及各性能测试结果
续表2
。

Claims (7)

1.一种微发泡聚丙烯复合材料，按重量份数计，包括如下组分：
聚丙烯 100份；
玻璃纤维 10份-30份；
稀土氧化物 1份-3份；
发泡剂 1份-5份；
所述稀土氧化物选自镧系元素的氧化物或者镧系元素的氧化物与其他元素的氧化物的复配物；所述镧系元素选自镧、铈、镨、钕、钷、钐、铕、钆、铽、镝、钬、铒、铥、镱、镥中的一种或几种；所述其他元素的氧化物选自钪、钇中的一种或几种。
2.根据权利要求1所述的微发泡聚丙烯复合材料，其特征在于，所述聚丙烯选自均聚聚丙烯和/或共聚聚丙烯。
3.根据权利要求1所述的微发泡聚丙烯复合材料，其特征在于，所述镧系元素的氧化物与其他元素的氧化物的复配物中镧系元素的氧化物与其他元素的氧化物的复配重量比为1：0.5-1：3。
4.根据权利要求3所述的微发泡聚丙烯复合材料，其特征在于，所述镧系元素的氧化物与其他元素的氧化物的复配物中镧系元素的氧化物与其他元素的氧化物的复配重量比为1：1-1：2。
5.根据权利要求1所述的微发泡聚丙烯复合材料，其特征在于，所述发泡剂选自偶氮二甲酰胺、甲苯磺酰氨基脲、4,4’-二磺酰肼二苯醚、N,N’-二亚硝基五次甲基四胺中的一种或几种。
6.一种如权利要求1-4中任一项所述的微发泡聚丙烯复合材料的制备方法，其特征在于：包括如下步骤：
按照配比将聚丙烯、玻璃纤维、稀土氧化物先通过双螺杆挤出机挤出造粒，再将挤出得到的物料与发泡剂进行混合通过注塑机，得到微发泡聚丙烯复合材料。
7.根据权利要求6所述的微发泡聚丙烯复合材料的制备方法，其特征在于，所述挤出机各段的条件为第一段：180℃、第二段：210℃、第三段：220℃、第四段：220℃、模口：200℃。
CN201710559553.4A 2017-07-11 2017-07-11 一种微发泡聚丙烯复合材料及其制备方法 Active CN107474308B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710559553.4A CN107474308B (zh) 2017-07-11 2017-07-11 一种微发泡聚丙烯复合材料及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710559553.4A CN107474308B (zh) 2017-07-11 2017-07-11 一种微发泡聚丙烯复合材料及其制备方法

Publications (2)

Publication Number Publication Date
CN107474308A CN107474308A (zh) 2017-12-15
CN107474308B true CN107474308B (zh) 2018-11-23

Family

ID=60594931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710559553.4A Active CN107474308B (zh) 2017-07-11 2017-07-11 一种微发泡聚丙烯复合材料及其制备方法

Country Status (1)

Country Link
CN (1) CN107474308B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110982171B (zh) * 2019-11-26 2022-07-01 金旸（厦门）新材料科技有限公司 一种低密度增韧聚丙烯开孔微发泡材料
CN112409684A (zh) * 2020-11-03 2021-02-26 临沂利方塑胶制品有限公司 一种高强度玩具塑料的加工方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102558449A (zh) * 2011-12-13 2012-07-11 金发科技股份有限公司 一种高熔体强度的聚丙烯材料及其制备方法与应用
CN104725718A (zh) * 2014-12-26 2015-06-24 上海金发科技发展有限公司 一种具有良好外观的聚丙烯结构发泡材料及其制备方法

Also Published As

Publication number Publication date
CN107474308A (zh) 2017-12-15

Similar Documents

Publication Publication Date Title
KR101455435B1 (ko) 폴리프로필렌계 수지 발포 입자 및 그 성형체
US4616059A (en) Graft-modified ultrahigh-molecular-weight polyethylene and process for producing same
CN109705465B (zh) 一种中空聚烯烃发泡材料及其制备方法
CN107474308B (zh) 一种微发泡聚丙烯复合材料及其制备方法
JP6536280B2 (ja) 発泡成形用樹脂、発泡成形体の製造方法
CN205553027U (zh) 一种超临界流体挤出发泡设备
CN101053778A (zh) 聚偏氟乙烯中空纤维多孔膜制备方法及其制品
CN107200919A (zh) 一种注塑级微发泡聚丙烯复合材料及其制备方法
CN105504499A (zh) 一种微孔发泡聚丙烯复合材料及其制备方法
CN101796113A (zh) 聚丙烯类树脂挤出发泡体及其制造方法
CN106432887B (zh) 一种聚烯烃发泡母粒的组成及制备方法和用途
CN111286177A (zh) 一种pla/pa超临界发泡复合材料及其制备方法
CN102505165A (zh) 应用超临界流体熔喷纺丝制备聚砜类微孔纤维的方法
US20040245172A1 (en) Filtration membrane
CA1277467C (en) Method of manufacturing polybutylene terephthalate resin films
CN109265825B (zh) 一种聚丙烯或聚丙烯复合物发泡制品及其制备方法
CN110283372A (zh) 一种双峰高密度聚乙烯的微孔发泡材料及其制备方法
CN110216958A (zh) 一种低热导率耐拉耐压的多层发泡材料及其制备方法
CN109467806A (zh) 一种复合型微发泡材料的制备方法
JPH062841B2 (ja) 多孔化透過性ポリエチレンフイルム
CN109295537B (zh) 一种柔韧耐磨抗菌扁丝及其拉丝工艺
CN111019240B (zh) 一种注塑发泡用聚丙烯复合材料及其制备方法
US4879085A (en) Method of manufacturing polyacetal resin film
CN109852045B (zh) 一种微孔发泡长碳纤维增强pa11材料及其制备方法
JP2018141031A (ja) 発泡成形用樹脂、発泡成形体及びその製造方法

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
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200911

Address after: 430056 No. 3, erudite Road, Wuhan economic and Technological Development Zone, Hubei

Co-patentee after: CHENGDU KINGFA TECHNOLOGY NEW MATERIAL Co.,Ltd.

Patentee after: WUHAN KINGFA SCI. & TECH. Co.,Ltd.

Co-patentee after: WUHAN KINGFA TECHNOLOGY ENTERPRISE TECHNOLOGY CENTER Co.,Ltd.

Address before: 430056 No. 3, erudite Road, Wuhan economic and Technological Development Zone, Hubei

Co-patentee before: WUHAN KINGFA TECHNOLOGY ENTERPRISE TECHNOLOGY CENTER Co.,Ltd.

Patentee before: WUHAN KINGFA SCI. & TECH. Co.,Ltd.