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General EVA Grafting Maleic Anhydride Products with Low Melting Point High Adhesive Performance

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Model No.: K2G
lntroduction:

K2G is a general-purpose EVA-g-MAH product with excellent comprehensive properties.

EVA grafted maleic anhydride can be used as a film for hot-pressing bonding wood, and the bonding can be completed at a lower hot-pressing temperature. The following is Comparison table of bonding strength of EVA-g-MAH film to poplar board.

EVA-g-MAH (ethylene-vinyl acetate-graft-maleic anhydride) is a type of copolymer that is commonly used in various industrial applications. One of its applications is as a film for hot-pressing bonding wood. This copolymer has been found to be effective in improving the bonding strength of wood and reducing the hot-pressing temperature required to complete the bonding process.

The use of EVA-g-MAH as a bonding film for wood has several advantages. First, it has good adhesion properties, which allows it to bond well with wood substrates. Second, it has a low melting point, which means that it can be hot-pressed at a lower temperature compared to other bonding agents, thereby reducing the energy required for the process. Third, it is a thermoplastic material, which means that it can be melted and reshaped multiple times without losing its properties, making it a suitable material for recycling.

Overall, the use of EVA-g-MAH as a bonding film for wood is a promising development that can lead to more efficient and environmentally friendly bonding processes in the wood industry.


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Description

K2G is a general-purpose EVA-g-MAH product with excellent comprehensive properties.EVA-g-MAH can be used as a film for hot-pressing bonding wood, and the bonding can be completed at a lower hot-pressing temperature. The following is Comparison table of bonding strength of EVA-g-MAH film to poplar board.

Characterisitic
Product modelsK2GK2BK2L
Melting index15-30
2-8
2-6
Grafting rateHighHigh
High
performanceHigh flowhigh adhesion

high strength, high adhesionComposite hot melt adhesive,

hydrolysis resistance, high adhesion

NOTE: The above data are typical test values and should not be interpreted as a specification low < 0.4wt %, medium 0.4-0.8 wt%, high > 0.8wt%

Comparison parameters of different applications

Adhesion effect of EVA raw material film and K2G film

model
bond strength/MPa
remark

EVA-VA28

0.264
----
K2G
1.625
interface tearing

As can be seen from the above table, because the MAH in EVA-g-MAH reacts with the hydroxyl groups in the wood fiber, a mutual entanglement structure is formed through chemical bonds, which increases the cohesion force, the interface is torn, and its cohesion force is increased. 516% higher adhesion than EVA raw material.

T-type peel strength test (aluminum sheet)

Model

T-peel strength N/25mm
EVA-VA28160
foreign competitors EVA-g-MAH258
K2G252

Figure 1: T-type test (aluminum sheet) standard parts and test process sketch


Applications

Typical application(advantages)

Hot melt adhesive series, mainly used for film blowing, extrusion, hot melt adhesive,

solvent-soluble glue, surface treatment accelerator, etc. High grafting rate, good polarity,

and excellent adhesion to metals, aluminum, and other substrates.

When used as a surface treatment agent, it can improve metals, polyester, PP, PE, EVA

and other materials. Improve the surface adhesion, increase the adhesion and adhesion.

To be used as the adhesive for composite structure materials, which contain the matel-plastic panels, muli-layers, etc.

To be used as compatibilizers for EVA compounds, and other masterbatch.

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