Patent
Flame-retardant and heat-resistant epoxy resin for self-adhesive prepreg
Wuyunqiqige,Du Yu,Lei Na,Zhang Baoyan +3 more
- 26 Oct 2016
9
TL;DR: In this paper, a flame-retardant and heat-resistant epoxy resins for self-adhesive prepreg is presented, which consists of an epoxy resin mixture component A and a curing agent mixture component B.
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Abstract: The invention belongs to the technical field of preparation of prepreg, and particularly relates to a flame-retardant and heat-resistant epoxy resin for self-adhesive prepreg. The resin for the prepreg consists of an epoxy resin mixture component A and a curing agent mixture component B. The epoxy resin mixture component A accounts for 50-80 parts by weight of the resin, and the curing agent mixture component B accounts for 10-40 parts by weight of the resin. The prepreg is prepared by a hot melt adhesive dipping reinforcing material of a composition; a composite material is formed by the prepreg. The viscosity of the prepreg is moderate, and the processability is good; the storage time at the normal temperature is 3 months. The prepreg can be cured completely within 2 hours at the temperature of 135 DEG C. The glass-transition temperature of the cured composite material is 180-210 DEG C; heat resistance and flame retardance of the composite material are good. The resin for the hot melting prepreg provided by the invention has been toughened and modified, the self-adhesive property of the prepreg is good, honeycombs can be adhered directly, adhesive films are not required, the process can be simplified, and the weight can be reduced.
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Citations
Patent
Fast curing anti-flaming prepreg resin with controllable viscosity and preparation method thereof
Li Zhenwei,Yan Yiwu,Cao Hailin +2 more
- 29 Mar 2019
TL;DR: In this paper, a fast-curing anti-flaming prepreg resin with controllable viscosity and a preparation method thereof is presented, where epoxy groups are controllably pre-polymerized in the manner of quantitatively adding amido functional groups into a liquid epoxy resin.
3
Patent
High temperature-resistant resin matrix and preparation method thereof
Zeng Qiuyun,Lin Fengsen,Cong Qing,Li Shenglin,Wang Dawei,Li Lin,Guo Hui,Yan Hongchao,Li Gang +8 more
- 02 Mar 2018
TL;DR: In this paper, a high temperature-resistant resin matrix and a preparation method for a high-molecular material are described, where the high temperature resistant resin matrices have excellent manufacturability, high intensity, high impact strength and high corrosion resistance.
1
Patent
Flame-retardant surface film for carbon fiber reinforced resin based composite and preparation method of flame-retardant surface film
Li Zhitao,Shan Ruijun,Zhu Shanshan,Yin Guoqiang,Lei Pan,Ni Meng +5 more
- 17 Nov 2017
TL;DR: In this paper, a flame-retardant surface film for a carbon fiber reinforced resin based composite is presented, which is prepared from raw materials in parts by weight as follows: 60-100 parts of epoxy resin, 15-25 parts of toughening agent, 4-8 parts of a curing agent, 2-4 parts of accelerant, 40-70 parts of flame retardant and a carrier.
Patent
Self-adhesive prepreg
Rhodes Michael
- 28 Oct 2020
TL;DR: A self-adhesive prepreg comprising a fibre reinforcement layer having a first side and a second side, wherein the first side of the fiber reinforcement layer has been pre-impregnated with a selfadhesive (i.e. adheres to metal) resin composition is used as a structural reinforcement and is especially adapted for direct bonding to oily steel or galvanized steel in the automotive, aerospace and other sheet metal fabrication industries as discussed by the authors.
Patent
Preparation method of emulsion for coating high-temperature-resistant and flame-retardant glass fiber sleeve
Lei Chenglong,Tu Weiwei,Wu Yang,Tang Hongzhe +3 more
- 21 Jun 2019
TL;DR: In this paper, a preparation method of emulsion for coating a high-temperature resistant and flame-retardant glass fiber sleeve is presented, which comprises the following steps in sequence: S1, mixing tetrafunctional glycidyl amine epoxy resin and brominated epoxy resins in a forced mixer uniformly to obtain a mixed solution; S2, heating the mixed solution obtained in step S1 to 40-70 DEG C, adding the curing agent, the accelerator, the flexibilizer and polymethylsiloxane, performing mixing in
References
Patent
Flame retardant epoxy prepreg composite material and its preparing method and its use
Xiaobiao Zuo,Wang Wei,Zhihai Feng,Jie Li,Yu Ruilian,Baoxian Du,Zhongping Li +6 more
- 17 Oct 2012
TL;DR: In this paper, a flame retardant epoxy prepreg composite material and its preparation method and its use is discussed. But the main component of the composite material is a rigid frame structure.
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Patent
Preparation method of medium temperature curing heat-melting epoxy resin system for domestic carbon fiber bicycle
Zhang Siwei,Shang Wulin,Xiong Hao,Zhou Hengxiang,Gu Liang E +4 more
- 04 Sep 2013
TL;DR: In this paper, a preparation method of a medium temperature curing heat-melting epoxy resin system for a domestic carbon fiber bicycle is described. But the method is not suitable for carbon fiber products.
11
Patent
Epoxy resin for prepreg and preparation method thereof
Wuyunqiqige,Xiaosu Yi +1 more
- 03 Oct 2012
TL;DR: In this article, an epoxy resin for prepreg and a preparation method thereof was proposed, which is suitable for preparing composite material with an autoclave method or a die pressing method; and the toughness, flame retardance and electrical property of the composite material are high.
9
Patent
Electric machine with low magnetic slot leakage
Ralf Fischer,Korbinian Petermaier,Rolf Vollmer +2 more
- 11 Sep 2015
TL;DR: In this paper, an active part (S) for an electric machine (E) is designed as a stator or a rotor, which has at least two slots for arranging a respective electric coil winding and at least one connecting piece (22) arranged between adjacent slots for conducting a magnetic flux (30) through the coil.
4
Patent
Blending method of epoxy resin applicable to preparing carbon fiber preimpregnated material by medium-temperature heat melting method
Ma Xiaokun,Yang Xiaofeng,Zhang Dongjie,Xu Yongtian,Shi Dachuan +4 more
- 02 Apr 2014
TL;DR: In this article, a blending method of epoxy resin applicable to preparing a carbon fiber preimpregnated material by a medium-temperature heat melting method is described, where the blending method comprises the steps: preheating selected epoxy resins, and then fully stirring and mixing, wherein the preheaking temperature is 100 DEG C, and the pre-heating time is 8 h; selecting a curing agent system comprising a dicyandiamide, an accelerant being a phenol-formaldehyde m-phenylenediamine condensation compound, a
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