Adhesive for metal/fabric bonding:preparation and using method

Patent metadata

Field	Value
Publication number	US-2016298002-A1
Application number	US-201415034873-A
Country	US
Kind code	A1
Filing date	Nov 5, 2014
Priority date	Nov 6, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

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.

First claim

1 . An adhesive for metal/fabric bonding of which the metals mainly include steel aluminium and their alloys, while the fabric mainly includes polyamide fiber, polyester fiber, polyvinyl alcohol fiber, polyvinyl alcohol fiber, polyvinyl alcohol fiber and their mixture; the adhesive consists of:
80 g to 120 g of epoxy resin, 10 g to 30 g of a reactive diluent, 0.5 g to 5 g of a silane coupling agent, 0.5 g to 5 g of a metallic oxide nanopowder and 35 g to 60 g of a curing agent; the method of using the adhesive comprises the steps of: preparing a metal substrate via cleaning by acetone, washing by deionized water, drying, coating the silane coupling agent and standing for 0.5-1 hour;
impregnating the fabric into a mixture solution of phosphoric acid and nitric acid with a volume ratio ranges from 1:9 to 4:6 at 40° C.-60° C. for 0.5-2 hours, wherein the concentration of phosphoric acid ranges from 1 to 3 mol/L, and the concentration of nitric acid ranges from 1 to 3 mol/L;
coating the adhesive on the surface of the metal substrate and covering the fabric on the adhesive for further drying and press curing.

2 . The adhesive for metal/fabric needing according to claim 1 , wherein the epoxy resin is commercial containing two or more epoxy groups per molecule, which includes epoxy E-44, E-51, E-55, E4-2, E3-1, E4-6 and E-20.

3 . The adhesive for metal/fabric bonding according to claim 2 , wherein the reactive diluent includes 1,6-hexanediol diacrylate, hydroxyethyl-β-methacrylate, cresyl glycidyl ether, castor oil glycidyl ether and ethylene glycol diglycidyl ether.

4 . The adhesive for metal/fabric bonding according to claim 3 , wherein the formula of the silane coupling agent is Y(CH2)nSiX3, wherein n=0˜3; X refers to chloro group, methoxy group, methoxy group, methoxyethoxy group or acetoxyl group, and Y refers to amino-group or epoxy group.

5 . The adhesive for metal/fabric bonding according to claim 4 , wherein the curing agent is amines or acid anhydrides compatible with epoxy resin, which includes ethanediamine, diethylenetriamine, m-phenylenediamine, phthalic anhydride, pyromellitic dianhydride and methylcyclohexene tetracarboxylic dianhydride.

6 . The adhesive for metal/fabric bonding according to claim 5 , wherein the metallic oxide nanopowder includes ZnO, Al2O3, BaO and Fe3O4 with particle size ranging from 20 to 200 nm.

7 . The adhesive for metal/fabric bonding according to claim 1 , wherein the preparation method comprises the steps of:
firstly, dissolving the metallic oxide nanopowder, the silane coupling agent, the curing agent onto the reactive diluent in turn and stirring for 0.5 to 1 hour to obtain homogeneous emulsion; secondly, adding epoxy resin into the emulsion in batches during ultrasonic and stirring for 0.5 to 2 hours until they are homogeneously mixed.

8 . The adhesive for metal/fabric bonding according to claim 2 , wherein the preparation method comprises the steps of:
firstly, dissolving the metallic oxide nanopowder, the silane coupling agent, the curing agent onto the reactive diluent in turn and stirring for 0.5 to 1 hour to obtain homogeneous emulsion; secondly, adding epoxy resin into the emulsion in batches during ultrasonic and stirring for 0.5 to 2 hours until they are homogeneously mixed.

9 . The adhesive for metal/fabric bonding according to claim 3 , wherein the preparation method comprises the steps of:
firstly, dissolving the metallic oxide nanopowder, the silane coupling agent, the curing agent onto the reactive diluent in turn and stirring for 0.5 to 1 hour to obtain homogeneous emulsion; secondly, adding epoxy resin into the emulsion in batches during ultrasonic and stirring for 0.5 to 2 hours until they are homogeneously mixed.

10 . The adhesive for metal/fabric bonding according to claim 4 , wherein the preparation method comprises the steps of:
firstly, dissolving the metallic oxide nanopowder, the silane coupling agent, the curing agent onto the reactive diluent in turn and stirring for 0.5 to 1 hour to obtain homogeneous emulsion; secondly, adding epoxy resin into the emulsion in batches during ultrasonic and stirring for 0.5 to 2 hours until they are homogeneously mixed.

11 . The adhesive for metal/fabric bonding according to claim 5 , wherein the preparation method comprises the steps of:
firstly, dissolving the metallic oxide nanopowder, the silane coupling agent the curing agent onto the reactive diluent in turn and stirring for 0.5 to 1 hour to obtain homogeneous emulsion; secondly, adding epoxy resin into the emulsion in batches during ultrasonic and stirring for 0.5 to 2 hours until they are homogeneously mixed.

12 . The adhesive for metal/fabric bonding according in claim 6 , wherein; the preparation method comprises the steps of:
firstly, dissolving the metallic oxide nanopowder, the silane coupling agent the curing agent onto the reactive diluent in turn and stirring for 0.5 to 1 hour to obtain homogeneous emulsion; secondly, adding epoxy resin into the emulsion in hatches during ultrasonic and stirring for 0.5 to 2 hours until they are homogeneously mixed.

Assignees

• Univ Xiamen
• Fujian Longxi Bearing (Group) Corp Ltd

Inventors

• Dai Lizong
• Mao Jie
• Zheng Fanpel
• Chen Lingnan
• Chen Zhixiong
• Zheng Birong
• Me Liangjia
• Xu Yiting
• Luo Wei'Ang
• Xu Xiasheng
• Wang Zhaochang

Classifications

• C09J5/02 Primary

  involving pretreatment of the surfaces to be joined · CPC title

• C08K3/22

  of metals · CPC title

• B32B37/06

  characterised by the heating method · CPC title

• B32B37/12

  characterised by using adhesives · CPC title

• C09J163/00

  Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins · CPC title