GB / T 2943-94 replaces GB 2943-82
Terms of adhesive
4 Gluing process
Surface treatment; surface preparation
In order to make the adherend suitable for gluing or coating, the surface is chemically or physically treated.
Defatted degrease
Remove oil stains on the surface of the adherend. It is usually treated with chemicals such as lye, organic solvents, and some are also aided by ultrasonic equipment.
Polish abrading
Use sandpaper, steel wire brush or other tools to treat the surface of the adherend.
Blasting treatment
A high-speed sand flow is sprayed by the sand blasting machine to treat the surface of the adherend.
Chemical treatment
Put the adherend in acid or alkali solution for treatment to activate or passivate the surface.
Anodic oxidation
In order to protect the metal surface or make it suitable for bonding, the metal adherend is used as the anode, and the process of forming an oxide film on the surface by electrochemical method.
Spray coating
Use a glue gun to spray the adhesive on the adhesive surface of the adherend.
Spread
The amount of adhesive applied to the unit bonding area of ​​the adherend.
Note: Single spread refers to the amount of adhesive applied to only one adherend of an adhesive joint.
Double spread refers to the amount of adhesive applied to the two adherends of the adhesive joint.
Separate application
When the two-component adhesive is applied, the two components are applied to the two adherends respectively, and the two are laminated together to form a bonding method.
Impregnation
A process of coating by immersing the adherend in an adhesive solution or adhesive dispersion.
Brush coating
A manual application method of applying adhesive to the surface of an adherend with a brush. Suitable for adhesives with slow solvent evaporation rate.
Drying time
Under the specified temperature and pressure, the time from glue application to adhesive drying.
Drying temperature
The temperature required for the adhesive to dry after application.
Sliding slippage
During the bonding process, the adherends move relative to each other.
Positioning fixing
When glued, the adherend is fixed in the ideal position.
Open assembly time
The time from the surface of the adherend exposed to the air before being laminated.
Closed assembly time
The time after the glued surface is superimposed before the pressure is applied.
Assembly time
The time from when the adhesive is applied to the adherend to when the assembly is heated or pressurized, or both.
Note: Assembly time is the sum of open time and stacking time.
Laminating
A method or process of overlapping and pressing together adhesive-coated substrates.
Hot pressing
A kind of adhesive bonding method for heating and pressing the assembly parts.
Cold pressing
A bonding method that only pressurizes the assembly without heating.
High frequency bonding
Place the assembly in a high-frequency (several megacycle) strong electric field, and the method of bonding by the heat generated by electrical induction.
Curing time; curing time
Under certain temperature, pressure and other conditions, the time required for the adhesive in the assembly to cure.
Hardening time setting time; set time
Under certain temperature, pressure and other conditions, the time required for the adhesive to harden in the assembly.
Curing temperature; curing temperature
The temperature required to cure the adhesive.
Hardening temperature setting temperature; set temperature
The temperature required for the adhesive to harden.
Room temperature curing
Curing in the normal temperature range.
Post curing; post cure
Further processing (such as heating, etc.) of the preliminary cured adhesive parts.
Overcure
When the adhesive in the assembly is cured, it exceeds the requirements of the bonding process (the temperature is too high, the time is too long, etc.) and the bonding performance is deteriorated.
Undercure
Insufficient curing of adhesives, a phenomenon that causes poor bonding performance.
Bag moulding
A method of gluing using fluid pressure. Generally, the flexible membrane or bag is pressurized by air, steam, water, etc. or vacuum, and this membrane or bag (sometimes connected to a rigid mold) completely covers the material to be glued. Irregularly shaped adhesive parts can be applied with uniform pressure to make them adhesively bonded. Processing machinery and coating equipment
Adhesive mixer
Mechanical device for mixing or formulating adhesives.
Glue gun
A device that sprays or injects adhesive onto the surface of an object under pressure.
Applicator
A device for applying adhesive on the surface of an adherend.
Doctor knife; doctor blade; doctor bar
An instrument capable of adjusting the thickness of an adhesive layer and evenly coating it on an adhesive roller or a surface to be coated.
Doctor roll
The roller with the foaming effect generated by the positive or negative rotation of different surface speeds to adjust the thickness of the glue.
Impregnator; saturator
Impregnate equipment such as paper and fabric with adhesive. It is generally composed of rotating roller, glue dipping tank, pressing roller, scraper and drying device.
Curing fixture
Positioning and pressing device used in the curing of the assembly.
Filler sheet
A deformable or elastic sheet material. When it is placed between the assembly to be glued and the pressurizer, or distributed between the laminates of the assembly, it helps to make the glued surface evenly pressed.
Liner caul
When gluing, put the assembly parts in the middle and put them into the upper and lower plates pressed by the press.
Press
A machine that applies pressure to the assembly to glue it.
Vacuum bag
A soft bag that uses vacuum to apply pressure to the accessories inside the bag.
Autoclave
A heating and pressurized cylindrical device used for curing assembly. Adhesive products and their defects
Assembly (for adhesives)
An assembly that is stacked together or has been glued together after glue application.
Bonded assembly
The assembly has been glued.
Structural bond
Adhesive fittings that can withstand long-term allowable stress and environmental effects.
Honeycomb core
Honeycomb material made of metal foil, paper or glass fiber cloth and other skeleton materials and adhesives. Used for manufacturing honeycomb sandwich structure.
Sandwich structure
A structure formed by bonding a layer of core material (such as honeycomb core, foam plastic, corrugated board, etc.) between two layers of panel materials.
Glued joint
The part where two adjacent adherends are glued together with an adhesive.
Lap joint
A joint formed by partially overlapping and gluing together two main surfaces of the adherend.
Butt joint
A glued joint where two ends are glued and one end face is perpendicular to the main surface of the adherend.
Angle joint
The ends of the main surfaces of the two adherends form an angled adhesive joint.
Scarf joint
The two adherends are cut into corresponding cross sections other than 90 °, and the two cross sections are glued into joints with the same plane.
Dado joint
Tenon-groove glued joints.
Dowel joint
The glued parts of the two adherends form a joint with a pin hole or a ring sleeve structure (such as bar and pipe, pipe and pipe).
Starved joint
The amount of glue is insufficient, and the joint with satisfactory glue effect cannot be obtained.
Note: This situation occurs because the glue is too thin to fill the pores between the adherends; the adhesive penetrates into the adherends excessively; the assembly time is too short or the bonding pressure is too large.
Laminate
Products made of two or more layers of materials glued together.
Orthogonal laminate cross laminaate; crosswise laminate
A laminate in which the orientation of the texture (or most in the direction of tensile strength) of certain layers is at an angle of 90 ° to the orientation of the texture (or the direction of the maximum tensile strength) of adjacent layers.
Parallel laminate
A laminate with the orientation of the texture (or direction of maximum stretch rate) of all layers approximately parallel.
Plywood
A group of veneers is usually a board formed by gluing the blanks perpendicular to each other according to the wood grain direction of adjacent layers. Usually, the surface board and the inner layer board are symmetrically arranged on both sides of the center layer or the board core.
5 Performance and test storage life storage life; shelf life
Under the specified conditions, the adhesive can still maintain its operating performance and the maximum storage time of the specified strength.
Pot life pot life; working life
The time after the formulated adhesive can maintain its usable performance.
Synonym: period of use
Solids content
Under the specified test conditions, the weight percentage of non-volatile substances in the adhesive is measured.
Synonyms: non-volatile content.
Chemical resistance
The ability of the glued sample to maintain its glued performance after being subjected to chemicals such as acids, alkalis, and salts.
Solvent resistance
The ability of the glued sample to maintain its glued performance after being subjected to a solvent.
Water resistance
The ability of glued joints to maintain their glued joints after being subjected to moisture or moisture.
Ablation resistance
The ability of the adhesive layer to resist high temperature flame and high speed air flow.
Durability; durability
Under the conditions of use, the ability of adhesive parts to maintain their performance for a long time.
Weather resistance
The ability of glue to resist climatic conditions such as sunlight, hot and cold, wind, rain, salt and fog.
Bonding strength
The stress required to break the interface between the adhesive and the adherend or its vicinity in the bonding.
Wet strength
Under the specified conditions, the adhesive strength of the adhesive sample is measured after soaking in the liquid.
Dry strength
Under the specified conditions, the adhesive strength measured after the adhesive sample is dried.
Shear strength
Under the load parallel to the adhesive layer, the shear force on the adhesive surface of the unit when the adhesive sample is destroyed. Expressed with mpa.
Tensile shear strength; longitudinal shear strength; lap-joint strength
Under the action of the tensile load parallel to the axial direction of the adhesive interface layer, the stress that causes the adhesive adhesive joint to break. Expressed with mpa.
Tensile strength
Under the load perpendicular to the glue layer, when the glued sample fails, the tensile force per unit glued surface. Expressed with mpa.
Peel strength
Under the specified peeling conditions, the load per unit width that can be followed when the glued sample is separated. Expressed with kn / m.
Impact strength
The maximum work consumed per unit of bonded surface when the bonded sample is destroyed with impact load. Represented by j.
Bending strength
The maximum load the unit's bonded surface bears when the bonded sample is damaged under bending load or reaches the specified deflection. Expressed with mpa.
Persistent strength
Under certain conditions, the maximum static load that a unit bonding surface can follow within a specified time. Expressed with mpa.
Torsional shear strength
Under the action of torsional moment, the maximum tangential shear force that the unit glued surface can bear when the glued sample is broken Expressed with mpa.
Compressive shear strength of dowel joint
Under the action of axial force, the compression and shear force that the unit's glued surface can bear when the socket joint breaks. Expressed with mpa.
Fatigue life
Under specified load, frequency and other conditions, the number of alternating stress or strain cycles when the bonded sample fails.
Destructive test
A test to check the quality of the glued joint by destroying it.
Non-destructive test
The test of the quality of the glue joint (such as x-ray analysis, ultrasonic flaw detection, etc.) carried out without destroying the glue joint.
Boiling test
After immersing the adhesive sample in boiling water for a specified time, the test of the adhesive strength is determined.
High-low temperature cycles test
A test to detect changes in the performance of the bonded sample after alternating with the specified high and low temperature cycles.
Weathering test
A test that exposes the glued specimen to natural weather conditions or simulated conditions to detect changes in its performance.
Accelerated ageing test
Put the glued sample under more severe conditions than natural conditions, and test the performance change after a short time test.
Fatigue test
Under the specified frequency load and other conditions, the bonded specimen is subjected to an alternating load to determine its fatigue ultimate strength or fatigue life or crack growth rate or a test to study the entire fatigue fracture process.
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