Patents by Inventor Wei'ang Luo
Wei'ang Luo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11104752Abstract: Disclosed is a method for inducing orderly arrangement by means of polymer crystallization, and the use thereof in preparing a composite film. Firstly, monodisperse PS-DVB nano-microspheres of different sizes are prepared by means of soap-free emulsion polymerization; the PS-DVB nano-microspheres prepared above are used as raw material, and PEG aqueous solutions with different concentrations are added to induce an orderly arrangement of the nano-microspheres by means of solution-state PEG crystallization; and characterized by using scanning electron microscopy and polarizing microscopy. The method is simple in terms of operation and is widely applicable. By further modifying the orderly arrangement of the nano-microspheres, the composite material can be applied to different fields.Type: GrantFiled: July 5, 2019Date of Patent: August 31, 2021Assignee: Xiamen UniversityInventors: Lizong Dai, Jihong Zhu, Shangyue Chen, Yuntong Li, Conghui Yuan, Guorong Chen, Birong Zeng, Yiting Xu, Wei'ang Luo
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Patent number: 11046832Abstract: The present disclosure discloses a method of manufacturing silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen, which relates to organic/inorganic hybrid nanoparticles, dispersing SiO2 in an organic solvent, then adding THPS, stirring, and finally adding p-phenylenediamine, reacting, centrifuging, washing, and drying to obtain silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen. The silicon dioxide nanoparticles modified by the polymer containing phosphorus and nitrogen have effects in flame retardancy, strengthening effect of polymer matrixes, and are expected to be widely used in the halogen-free synergistic flame retardancy of polymer materials.Type: GrantFiled: September 11, 2019Date of Patent: June 29, 2021Assignee: Xiamen UniversityInventors: Lizong Dai, Chao Liu, Guorong Chen, Jiamei Huang, Zhongyu Li, Conghui Yuan, Yiting Xu, Birong Zeng, Wei′ang Luo
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Method for preparing fluorine-silicon-containing polyphosphate ester and flame retardant epoxy resin
Patent number: 11046816Abstract: Disclosed are a fluorine-silicon-containing polyphosphate ester and method for preparation thereof, having a chemical structural formula of: wherein R1 is R2 is n=10˜100. The fluorine-silicon-containing polyphosphate ester of the present invention uses silicon phosphorus and fluorine for improving flame retardancy. Phosphorus catalyzes the system to form a phosphorus-rich carbon layer, performing a protective-layer function and thereby preventing further breakdown of the epoxy resin. The silicon-containing epoxy resin forms a silica-containing carbon layer during the process of combustion, strengthening the carbon-layer structure and further improving the protective function of the carbon-layer. The introduction of elemental fluorine improves the thermal stability of the epoxy resin, thereby improving the flame retardancy performance of the system.Type: GrantFiled: November 23, 2017Date of Patent: June 29, 2021Assignee: Xiamen UniversityInventors: Lizong Dai, Ting Chen, Cheng Liu, Shicheng Wang, Guorong Cehn, Conghui Yuan, Yiting Xu, Birong Zeng, Wei'ang Luo, Kaibin He -
Patent number: 10844170Abstract: Disclosed are a preparation method of a phosphorus-nitrogen-silicon-containing polymeric flame retardant and application thereof. The chemical structure of the polymeric flame retardant is wherein m=10˜100, n=10˜100. The synergistic flame-retardant effect between the phosphorus, nitrogen, and silicon in the phosphorus-nitrogen-silicon-containing polymeric flame retardant increases the flame retardancy of epoxy resin.Type: GrantFiled: November 23, 2017Date of Patent: November 24, 2020Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Ting Chen, Cheng Liu, Shicheng Wang, Guorong Cehn, Conghui Yuan, Yiting Xu, Birong Zeng, Wei'ang Luo
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Patent number: 10843926Abstract: Provided are a 2-mercaptobenzothiazole modified graphene oxide anti-corrosion coating and a preparation method thereof, the raw materials of which comprising, by mass ratio: 2-mercaptobenzothiazole modified graphene oxide 5-20; a matrix resin 30-70; a leveling agent 0.5-1.0; a defoamant 0.5-1.0; a dispersant 0.5-1.0; a film-forming additive 0.5-1.0; a diluent 20-35. The method for the 2-mercaptobenzothiazole modified graphene oxide comprises first reacting graphene oxide with cyanuric chloride, then reacting with 2-mercaptobenzothiazole.Type: GrantFiled: November 23, 2017Date of Patent: November 24, 2020Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Shicheng Wang, Zhiheng Shao, Ting Chen, Conghui Yuan, Birong Zeng, Yiting Xu, Wei'ang Luo
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Preparation method of phosphaphenanthrene-structure reactive flame retardant and application thereof
Patent number: 10618923Abstract: Disclosed are a phosphaphenanthrene-structure reactive flame retardant and an application thereof. The preparation method comprises: enabling 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), p-hydroxy benzaldehyde (4-HBA), and 5-aminomethyl-1,3-diphenyl-1,3,5-diphosphonitryl heterocycles to react under a certain condition to obtain the reactive flame retardant with a benzene ring rigid structure containing polyhydroxy. Compared with an ordinary flame retardant, the phosphaphenanthrene-structure reactive flame retardant has the characteristics that polyfunctionality is achieved, the molecular structure is stable, the hydrolysis resistance is better, and less migration in epoxy resin, moreover, the flame retardant property of the epoxy resin can be remarkably improved.Type: GrantFiled: November 23, 2017Date of Patent: April 14, 2020Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Chao Liu, Guorong Cehn, Jiamei Huang, Yiting Xu, Birong Zeng, Wei'ang Luo, Cohghui Yuan, Kaibin He, Xinyu Liu -
Publication number: 20200002503Abstract: The present disclosure discloses a method of manufacturing silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen, which relates to organic/inorganic hybrid nanoparticles, dispersing SiO2 in an organic solvent, then adding THPS, stirring, and finally adding p-phenylenediamine, reacting, centrifuging, washing, and drying to obtain silicon dioxide nanoparticles modified by a polymer containing phosphorus and nitrogen. The silicon dioxide nanoparticles modified by the polymer containing phosphorus and nitrogen have effects in flame retardancy, strengthening effect of polymer matrixes, and are expected to be widely used in the halogen-free synergistic flame retardancy of polymer materials.Type: ApplicationFiled: September 11, 2019Publication date: January 2, 2020Inventors: Lizong DAI, Chao LIU, Guorong CHEN, Jiamei HUANG, Zhongyu LI, Conghui YUAN, Yiting XU, Birong ZENG, Wei'ang LUO
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PREPARATION METHOD OF PHOSPHAPHENANTHRENE-STRUCTURE REACTIVE FLAME RETARDANT AND APPLICATION THEREOF
Publication number: 20190382427Abstract: Disclosed are a phosphaphenanthrene-structure reactive flame retardant and an application thereof. The preparation method comprises: enabling 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), p-hydroxy benzaldehyde (4-HBA), and 5-aminomethyl-1,3-diphenyl-1,3,5-diphosphonitryl heterocycles to react under a certain condition to obtain the reactive flame retardant with a benzene ring rigid structure containing polyhydroxy. Compared with an ordinary flame retardant, the phosphaphenanthrene-structure reactive flame retardant has the characteristics that polyfunctionality is achieved, the molecular structure is stable, the hydrolysis resistance is better, and less migration in epoxy resin, moreover, the flame retardant property of the epoxy resin can be remarkably improved.Type: ApplicationFiled: November 23, 2017Publication date: December 19, 2019Applicant: XIAMEN UNIVERSITYInventors: Lizong DAI, Chao LIU, Guorong CEHN, Jiamei HUANG, Yiting XU, Birong ZENG, Wei'ang LUO, Cohghui YUAN, Kaibin HE, Xinyu LIU -
Publication number: 20190330398Abstract: Disclosed is a method for inducing orderly arrangement by means of polymer crystallization, and the use thereof in preparing a composite film. Firstly, monodisperse PS-DVB nano-microspheres of different sizes are prepared by means of soap-free emulsion polymerization; the PS-DVB nano-microspheres prepared above are used as raw material, and PEG aqueous solutions with different concentrations are added to induce an orderly arrangement of the nano-microspheres by means of solution-state PEG crystallization; and characterized by using scanning electron microscopy and polarizing microscopy. The method is simple in terms of operation and is widely applicable. By further modifying the orderly arrangement of the nano-microspheres, the composite material can be applied to different fields.Type: ApplicationFiled: July 5, 2019Publication date: October 31, 2019Inventors: Lizong DAI, Jihong ZHU, Shangyue CHEN, Yuntong LI, Conghui YUAN, Guorong CHEN, Birong ZENG, Yiting XU, Wei'ang LUO
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Publication number: 20190284344Abstract: Disclosed are a fluorine-silicon-containing polyphosphate ester and method for preparation thereof, having a chemical structural formula of: wherein R 1 is R 2 is n=10˜100. The fluorine-silicon-containing polyphosphate ester of the present invention uses silicon phosphorus and fluorine for improving flame retardancy. Phosphorus catalyzes the system to form a phosphorus-rich carbon layer, performing a protective-layer function and thereby preventing further breakdown of the epoxy resin. The silicon-containing epoxy resin forms a silica-containing carbon layer during the process of combustion, strengthening the carbon-layer structure and further improving the protective function of the carbon-layer. The introduction of elemental fluorine improves the thermal stability of the epoxy resin, thereby improving the flame retardancy performance of the system.Type: ApplicationFiled: November 23, 2017Publication date: September 19, 2019Inventors: Lizong DAI, Ting CHEN, Cheng LIU, Shicheng WANG, Guorong CEHN, Conghui YUAN, Yiting XU, Birong ZENG, Wei'ang LUO, Kaibin HE
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Publication number: 20190276318Abstract: Provided are a 2-mercaptobenzothiazole modified graphene oxide anti-corrosion coating and a preparation method thereof, the raw materials of which comprising, by mass ratio: 2-mercaptobenzothiazole modified graphene oxide 5-20; a matrix resin 30-70; a leveling agent 0.5-1.0; a defoamant 0.5-1.0; a dispersant 0.5-1.0; a film-forming additive 0.5-1.0; a diluent 20-35. The method for the 2-mercaptobenzothiazole modified graphene oxide comprises first reacting graphene oxide with cyanuric chloride, then reacting with 2-mercaptobenzothiazole.Type: ApplicationFiled: November 23, 2017Publication date: September 12, 2019Inventors: Lizong DAI, Shicheng WANG, Zhiheng SHAO, Ting CHEN, Conghui YUAN, Birong ZENG, Yiting XU, Wei'ang LUO
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Publication number: 20190276599Abstract: Disclosed are a preparation method of a phosphorus-nitrogen-silicon-containing polymeric flame retardant and application thereof. The chemical structure of the polymeric flame retardant is wherein m=10˜100, n=10˜100. The synergistic flame-retardant effect between the phosphorus, nitrogen, and silicon in the phosphorus-nitrogen-silicon-containing polymeric flame retardant increases the flame retardancy of epoxy resin.Type: ApplicationFiled: November 23, 2017Publication date: September 12, 2019Inventors: Lizong DAI, Ting CHEN, Cheng LIU, Shicheng WANG, Guorong CEHN, Conghui YUAN, Yiting XU, Birong ZENG, Wei'ang LUO
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Patent number: 10189981Abstract: The present invention provides a method for preparing high-strength cross-linked polymer photonic crystal film by core-shell polymer microspheres via evaporation-induced self assembly. Monodispersed core-shell polymer microspheres are fabricated by emulsifier-free emulsion polymerization, and then the microspheres emulsion is coated onto suitable substrates. Finally, polymer photonic crystal film with long-range ordered is constructed via self assembly. Self-cross-linking between the two units improves the strength of the polymer photonic crystal film, therefore the preparation of large size industrial-grade photonic crystal film is practicable which extends its application on the field of dyeing.Type: GrantFiled: August 13, 2014Date of Patent: January 29, 2019Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Shirong Yu, Conghui Yuan, Long Zhang, Lina Zhong, Cunfeng Song, Yiting Xu, Birong Zeng, Wei'ang Luo
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Patent number: 9718937Abstract: The present invention provides a kind of inherent flame retardant rigid polyurethane foam. The production formula comprises 100 to 105 pbw of polyether polyol and reactive phosphorus-containing flame retardant, 2.5 to 3.5 pbw of amine catalyst, 0.8 to 2.5 pbw of tertiary amine catalyst, 0.8 to 2.5 pbw of foam stabilizer, 0.5 to 1.5 pbw of blowing agent, 135 to 150 pbw of isocyanates, and 0.05 to 0.1 pbw of organo-metallic catalyst, wherein the reactive phosphorus-containing flame retardant is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-4-hydroxybenzyl alcohol. The active monomers containing flame retarding elements are introduced into main chain and side chain of PU for modification, which permanently improves the flame retardancy of PU without obvious effect on other performance of PU matrix.Type: GrantFiled: December 5, 2014Date of Patent: August 1, 2017Assignee: XIAMEN UNIVERSITYInventors: Lizong Dai, Cong Xie, Wei'ang Luo, Birong Zeng, Yiting Xu, Xinyu Liu, Kaibin He, Qi Li, Yuanyuan Li, Xianming Chen
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Publication number: 20170073488Abstract: The present invention provides a kind of inherent flame retardant rigid polyurethane foam. The production formula comprises 100 to 105 pbw of polyether polyol and reactive phosphorus-containing flame retardant, 2.5 to 3.5 pbw of amine catalyst, 0.8 to 2.5 pbw of tertiary amine catalyst, 0.8 to 2.5 pbw of foam stabilizer, 0.5 to 1.5 pbw of blowing agent, 135 to 150 pbw of isocyanates, and 0.05 to 0.1 pbw of organo-metallic catalyst, wherein the reactive phosphorus-containing flame retardant is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-4-hydroxybenzyl alcohol. The active monomers containing flame retarding elements are introduced into main chain and side chain of PU for modification, which permanently improves the flame retardancy of PU without obvious effect on other performance of PU matrix.Type: ApplicationFiled: December 4, 2014Publication date: March 16, 2017Applicant: XIAMEN UNIVERSITYInventors: Lizong DAI, Cong XIE, Wei'ang LUO, Birong ZENG, Yiting XU, Xinyu LIU, Kaibin HE, Qi LI, Yuanyuan LI, Xianming CHEN
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Publication number: 20160298002Abstract: A new approach for preparation and use of adhesive for metal and fabric bonding is proposed in this invention. Generally, 80-120 g of epoxy resin, 10-30 g of reactive diluent, 0.5-5 g siliane coupling agent, 0.5-5 g metallic oxide nanopowder and 35-60 g curing agent are applied in the formula. With the treatment of silane coupling agent and the mixture of phosphoric acid and nitric acid respectively, the active groups are introduced onto the surface of the metal and the fabric, which enhanced the adhesive strength of metal/fabric interface. Simultaneously, the brittleness, poor cracking and impact resistance of the traditional epoxy adhesive are also optimized by using the method of this invention, which is easy to operate and widely used.Type: ApplicationFiled: November 5, 2014Publication date: October 13, 2016Applicants: XIAMEN UNIVERSITY, Fujian Longxi Bearing (Group) Corp., Ltd.Inventors: LIZONG DAI, JIE MAO, FANPEL ZHENG, LINGNAN CHEN, ZHIXIONG CHEN, BIRONG ZHENG, LIANGJIA ME, YITING XU, WEI'ANG LUO, XIASHENG XU, ZHAOCHANG WANG
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Publication number: 20160208431Abstract: The present invention provides a fluorine-containing self-lubricating fabric coating material and method for preparing the same. The coating material consists of 30 to 70 pbw of fluorine resin, 10 to 40 pbw of a curing agent, 5 to 25 pbw of a reactive diluents, 0.5 to 5 pbw of a silane coupling agent and 0.5 to 3 pbw of a silicon surfactant. It is of high fluorine content and high stability. Besides, the coating material system with characteristics of self-lubricating and weather resistance is solvent-free, environmentally friendly, and has wide applications.Type: ApplicationFiled: August 13, 2014Publication date: July 21, 2016Applicant: XIAMEN UNIVERSITYInventors: Lizong DAI, Jie MAO, Lingnan CHEN, Yiting XU, Birong ZENG, Wuhui QIU, Cunfeng SONG, Wei'ang LUO, Qilong KANG
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Publication number: 20160194490Abstract: The present invention provides a method for preparing high-strength cross-linked polymer photonic crystal film by core-shell polymer microspheres via evaporation-induced self assembly. Monodispersed core-shell polymer microspheres are fabricated by emulsifier-free emulsion polymerization, and then the microspheres emulsion is coated onto suitable substrates. Finally, polymer photonic crystal film with long-range ordered is constructed via self assembly. Self-cross-linking between the two units improves the strength of the polymer photonic crystal film, therefore the preparation of large size industrial-grade photonic crystal film is practicable which extends its application on the field of dyeing.Type: ApplicationFiled: August 13, 2014Publication date: July 7, 2016Applicant: XIAMEN UNIVERSITYInventors: Lizong Dai, Shirong YU, Conghui Yuan, Long Zhang, Lina Zhong, Cunfeng Song, Yiting Xu, Birong Zeng, Wei'ang Luo