CN102994022B

CN102994022B - Instant adhesive

Info

Publication number: CN102994022B
Application number: CN201210426507.4A
Authority: CN
Inventors: 郑跃辉
Original assignee: ANHUI DONGFANGJINHE PRECISION MACHINERY MANUFACTURING Co Ltd
Current assignee: ANHUI DONGFANGJINHE PRECISION MACHINERY MANUFACTURING Co Ltd
Priority date: 2012-10-31
Filing date: 2012-10-31
Publication date: 2015-04-08
Anticipated expiration: 2032-10-31
Also published as: CN102994022A

Abstract

The invention discloses an instant adhesive. The instant adhesive is prepared from the following raw materials: polymethyl methacrylate, ethyl cyanoacetate, 30-35% formaldehyde, piperidine, dichloroethane, a hydroquinone polymerization inhibitor and modified sepiolite. The instant adhesive is prepared by the following steps of: based on parts by weight, mixing the polymethyl methacrylate, the piperidine, the ethyl cyanoacetate and the 35% formaldehyde and then adding the obtained mixture into a reaction kettle to react for 1 hour at 70 DEG C when heated; and then adding the hydroquinone polymerization inhibitor, the modified sepiolite and the dichloroethane for reduced pressure distillation at 180 DEG C. The instant adhesive disclosed by the invention is an adhesive which has single component and is instantly cured on meeting moisture, and is convenient to use, the adhered surface needs no special pretreatment, heating and pressurizing are not necessary, and the adhesive is widely applied to the adhesion and location between plastics, and between the plastic and metal, is water-fast, cannot be combusted, is good in low-temperature adhesion property, and is low in cost.

Description

A kind of instant drying adhesive

Technical field

The present invention relates generally to a kind of instant drying adhesive, belongs to Material Field.

Background technology

Namely moment then uses glue to the solid name Si Yi of instant drying adhesive fast, is based on ethyl α-cyanoacrylate, adds tackifier, thickening material, stablizer, toughner, stopper etc., the single-component fast setting tackiness agent synthesized by vanguard technology; A kind of high strength, quick tackiness agent, the high short-term training that can be used in multiple types material proceeds with one's work, and is particularly suitable for being used in woodenware industry; For fitting tightly, porous material, such as rubber, metal, plastic cement, woodenware etc. can reach the strongest then effect; This glue is a single composition, solvent-free, does not need the tackiness agent adding catalyst, heating or pressurization, only needs meagre one deck glue, and it just can utilize the atmospheric moisture in air to produce high polymeric, and what reach the best amplexiforms effect.Have natural adhesive and synthetic adhesive point, also can be divided into organic adhesion agent and inorganic adhesive.Alpha-cyanoacrylate ester gum is single component, low viscosity, transparent, normal temperature fast setting tackiness agent.Gluing of surfaces, has good cementability to most material, is one of important room temperature setting adhesives kind.Weak point is that speed of response is too fast, and water tolerance is poor, and fragility is large, and heatproof low (<70 DEG C), preservation period is short, and weather resistance is bad, therefore will add people's corresponding auxiliary agent when joining glue, is used for provisional bonding.Material of main part is specific cyanoacrylate, then adds some auxiliary substances as stablizer, thickening material, softening agent, stopper etc.Should exclusion of water steam as far as possible when joining glue, it is little or air-locked that packaging vessel also applies ventilation property.The most frequently used base-material of response type acrylate (structure) tackiness agent is methyl methacrylate.

The feature of this glue is that quick solidifying, bonding strength are large, gluing of surfaces, and cementing thing surface does not need strict process, and each amounts of components of bi-component glue does not need to be strict with yet.Shortcoming is smell not smelling good.More crisp after the adhesive curing that simple (methyl) acrylate monomer is formed, shock resistance is poor, therefore often adds some other compound to improve glue-line toughness, improves mechanical property and the environmental resistance of glue-line.If the compound added does not participate in reaction when glue solidifies, exist only in and wherein play toughner effect, this kind of glue is called first-generation acrylate structural adhesive (FGA).If the compound added can carry out graft copolymerization with monomer when glue solidifies, in molecule, carry out increasing modification, this kind of glue is called s-generation acrylic ester adhesive (SGA).A class is also had to replace peroxide initiator and promotor when joining glue with photosensitizers, sensitizing agent, then constitute the third generation acrylic ester adhesive (TGA) with UV-light or electrocuring, its solidification is faster, storage is more stable, and is single component.

Summary of the invention

The object of the invention is exactly to provide a kind of instant drying adhesive.

The present invention is achieved by the following technical solutions:

A kind of instant drying adhesive, it is made up of the raw material of following weight parts:

The formaldehyde 95-100 of polymethylmethacrylate 8-15, ethyl cyanoacetate 130-140,30-35%, piperidines 0.1-0.3, ethylene dichloride 30-35, hydroquinone of polymerization retarder 3-5, modified meerschaum 3-5;

The mixing of the formaldehyde of the polymethylmethacrylate of above-mentioned weight part, piperidines, ethyl cyanoacetate, 30-35% is added in reactor, 1-2 hour is heated at 65-70 DEG C, then hydroquinone of polymerization retarder, modified meerschaum, ethylene dichloride is added, underpressure distillation at 160-180 DEG C, obtains described instant drying adhesive.

The preparation method of described modified meerschaum is:

Described modified meerschaum is made up of the raw material of following weight parts: sepiolite 100-105, polyacrylamide 20-30, initiator ammonium persulfate 1-2, linking agent N, N '-methylene-bisacrylamide 8-12, accelerant N, N, N ', N '-Tetramethyl Ethylene Diamine 8-12, tripoly phosphate sodium STPP 10-15;

By the polyacrylamide of above-mentioned weight part, initiator ammonium persulfate, linking agent N, N '-methylene-bisacrylamide, accelerant N, N, N ', N '-Tetramethyl Ethylene Diamine, tripoly phosphate sodium STPP mixing and stirring, join in above-mentioned weight part sepiolite, be heated to 70-80 DEG C, add rear rapid stirring even 1-2 hours, discharging, obtains modified meerschaum.

Advantage of the present invention is:

Instant drying adhesive of the present invention is single-component, wet gas instantaneous solidification type sizing agent, easy to use, special pre-treatment need not be carried out by gluing of surfaces, need not temperature-pressure, be widely used in plastics, bonding and location between plastics with metal, this glue is water-fast, do not burn, low-temperature adhesion performance is good, cheap.

Embodiment

Embodiment 1

The formaldehyde 100 of polymethylmethacrylate 15, ethyl cyanoacetate 140,30-35%, piperidines 0.3, ethylene dichloride 35, hydroquinone of polymerization retarder 3, modified meerschaum 5;

By the polymethylmethacrylate of above-mentioned weight part, piperidines, ethyl cyanoacetate, 35% formaldehyde mixing add in reactor, heat 1 hour at 70 DEG C, then add hydroquinone of polymerization retarder, modified meerschaum, ethylene dichloride, underpressure distillation at 180 DEG C, obtain described instant drying adhesive.

The preparation method of described modified meerschaum is:

Described modified meerschaum is made up of the raw material of following weight parts: sepiolite 105, polyacrylamide 30, initiator ammonium persulfate 2, linking agent N, N '-methylene-bisacrylamide 12, accelerant N, N, N ', N '-Tetramethyl Ethylene Diamine 12, tripoly phosphate sodium STPP 15;

By the polyacrylamide of above-mentioned weight part, initiator ammonium persulfate, linking agent N, N '-methylene-bisacrylamide, accelerant N, N, N ', N '-Tetramethyl Ethylene Diamine, tripoly phosphate sodium STPP mixing and stirring, join in above-mentioned weight part sepiolite, be heated to 80 DEG C, add rear rapid stirring even 2 hours, discharging, obtains modified meerschaum.

Performance test:

Adhesive shear strength (25 DEG C): No. 45 steel 19.3MPa, aluminium 17.7 MPa;

Pasta cohesiveness: aluminium flake is coated with one deck 10 ^#machine oil, oleaginousness 0.255mg/cm ², adhesive shear strength more only have dropped 4.2% with the test piece without oil.

Claims

1. an instant drying adhesive, is characterized in that it is made up of the raw material of following weight parts:

The mixing of the formaldehyde of the polymethylmethacrylate of above-mentioned weight part, piperidines, ethyl cyanoacetate, 30-35% is added in reactor, 1-2 hour is heated at 65-70 DEG C, then hydroquinone of polymerization retarder, modified meerschaum, ethylene dichloride is added, underpressure distillation at 160-180 DEG C, obtains described instant drying adhesive;

Described modified meerschaum is made up of the raw material of following weight parts: sepiolite 100-105, polyacrylamide 20-30, initiator ammonium persulfate 1-2, linking agent N, N '-methylene-bisacrylamide 8-12, accelerant N, N, N ', N '-Tetramethyl Ethylene Diamine 8-12, tripoly phosphate sodium STPP 10-15; By the polyacrylamide of above-mentioned weight part, initiator ammonium persulfate, linking agent N, N '-methylene-bisacrylamide, accelerant N, N, N ', N '-Tetramethyl Ethylene Diamine, tripoly phosphate sodium STPP mixing and stirring, join in above-mentioned weight part sepiolite, be heated to 70-80 DEG C, add rear rapid stirring even 1-2 hours, discharging, obtains modified meerschaum.