Effect of modified polypropylene on the interfacial bonding of polymer–aluminum laminated films

Liang, Changsheng; Lv, Zhen; Ye, Bo; Cui, Jiayang; Xu, Shiai

doi:10.1016/j.matdes.2015.05.021

Cited by 42 publications

(31 citation statements)

References 38 publications

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“…Aluminum (Al) and its alloys have a wide range of applications in aerospace, automobile, building and packaging materials owing to their high strength ratio, good formability and plasticity [1][2][3]. Despite its wide use in the packaging industry due to the excellent barrier performance to moisture and air [4], Al foil is easy to tear and undergo galvanic corrosion when contacting with other metals [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…The packaging material is often composed of the nylon, adhesive, Al foil, conversion coating, adhesive and cast polypropylene (CPP) layers from the outside to the inside, as figure 1 shows. Previous studies have shown that the T-peeling and heat-sealing strengths of Al/P film used in lithium-ion battery should be further improved, as interfacial delamination may occur during the contact with electrolyte [2,7]. It is accepted that both modification of the adhesive and surface treatment of Al foil are effective methods to improve the adhesive properties of Al/P film.…”

Section: Introductionmentioning

confidence: 99%

“…There is an ongoing interest in the adhesive between Al foil and CPP layers such as epoxy resin [5], polyurethane [8] and modified polypropylene (PP) [2], the last of which is known to be the most appropriate adhesive among them. Many modified PPs such as PP-g-MAH, glycidyl methacrylate grafted PP and acrylic grafted PP are used in Al/P film, and PP-g-MAH is particularly effective in improving the adhesive properties of Al/P film and corrosion resistance to electrolyte [7].…”

Section: Introductionmentioning

confidence: 99%

“…Although functionalized PPs are often used as adhesives to improve the adhesive performance between Al foil and PP [2,21,22], there are few studies on the effects of co-monomer on the properties of functionalized PP and the adhesive properties of functionalized PP with the Ti treated Al foil. Thus, the main objective of this study is to prepare PP-g-MAH for use as the adhesive layer in Al/P film by melt grafting reaction with the assistance of styrene (St), diallyl phthalate (DAP) and triallyl isocyanurate (TAIC), respectively.…”

Section: Introductionmentioning

confidence: 99%

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Effect of co-monomer on the adhesive performance of PP-g-MAH between cast polypropylene film and aluminum foil

Shen

2020

Mater. Res. Express

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Three functionalized polypropylenes (PPs) were successfully prepared for use as the inner adhesive layer of aluminum/polymer laminated film by melt grafting of maleic anhydride (MAH) on PP with styrene (St), diallyl phthalate (DAP) and triallyl isocyanurate (TAIC) as co-monomers, respectively. The effects of these co-monomers (St, DAP and TAIC) on the grafting degree of MAH, gel content, thermal property and adhesive performance of MAH grafted PP (PP-g-MAH) were investigated. The results show that the T-peeling and heat-sealing strengths of TAIC-assisted PP-g-MAH (PP-g-MAH/ TAIC) are 28.6 and 70.4 N /15 mm, which are increased by 33.6% and 20.8% compared to DAPassisted PP-g-MAH (PP-g-MAH/DAP), and by 142.4% and 81.0% compared to St-assisted PP-g-MAH (PP-g-MAH/St), respectively. The grafting degree of MAH reaches a maximum of 2.3 wt% in PP-g-MAH/TAIC, which leads to a higher crystallization temperature than PP-g-MAH/DAP and PPg-MAH/St. PP-g-MAH/TAIC also has better thermal stability than the other two functionalized PPs, as TAIC can effectively reduce PP chain scission and promote the formation of a cross-linked structure during the melt grafting.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of co-monomer on the adhesive performance of PP-g-MAH between cast polypropylene film and aluminum foil

Shen

2020

Mater. Res. Express

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“…In cement and mortar repair materials, polymers are meant to improve bonding, provide a protective film on the surfaces of aggregates, and form a link with the hydration products of cement resulting in a mesh structures similar to that of polymer-laminated films. 8 Polymers can also help to fill in capillary pores, enhance resistance to water and chemicals, reduce surface cracking, and improve durability.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of cementitious repair mortars modified with polymers

Weng

2017

Advances in Mechanical Engineering

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The aim of this study was to evaluate the effects of added polymers on the properties of repair mortars. Two types of polymers, ethylene vinyl acetate and polyvinyl acetate-vinyl carboxylate, were used as a replacement for 3%, 5%, and 8% of the cement (by weight). All tests were conducted using two water-cement ratios of 0.5 and 0.6. The effectiveness of the repair materials was evaluated according to setting time, drying shrinkage, thermal expansion, compressive strength, and bond strength. Specimens containing polyvinyl acetate-vinyl carboxylate at a water-cement ratio of 0.5 presented the highest compressive and bond strength. Specimens containing ethylene vinyl acetate presented strength characteristics exceeding those of the control at 28 days. The drying shrinkage of polyvinyl acetate-vinyl carboxylate specimens was similar to that of the control. At a water-cement ratio of 0.5, the thermal expansion of polyvinyl acetate-vinyl carboxylate specimens was lower than that of ethylene vinyl acetate specimens; however, at a water-cement ratio of 0.6, the thermal expansion was independent of the type of polymer.

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Enhancing the interfacial bond strength of aluminum/polymer laminated film of the soft package lithium‐ion battery through polydopamine surface modification

2022

J of Applied Polymer Sci

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The aluminum (Al) foil used in Al/polymer laminated film of the soft package lithium-ion battery (LIB) is widely treated with a hexavalent chromate conversion coating to increase the adhesive strength and durability of the adhesive joint. Given that hexavalent chromate is toxic and carcinogenic, a novel and chromate-free method was developed in this study for surface modification of the Al foil using polydopamine (PDA) functionalization after titanium (Ti) chemical conversion. Ti conversion favors the deposition of PDA and introduces more functional groups of PDA on the Al surface. A novel polypropylene-based hot melt adhesive, MAH-g-(PP/PBE), was prepared by melt grafting of maleic anhydride on the blend of polypropylene and propylene-based elastomer for use as the inner adhesive of Al/polymer laminated film. Then, treated Al foil/MAH-g-(PP/PBE) composites were prepared and their interfacial adhesive strengths were investigated. The results show that the amine and catechol groups of PDA improve the interfacial adhesion between adhesive and Al foil by improving the wettability and interfacial interaction. The peel strength between MAH-g-(PP/PBE) and PDA functionalized Al foil after Ti conversion treatment can reach 3.55 N/mm, which is increased by 322% compared with that between MAH-g-PP and untreated Al foil. PDA functionalization after Ti chemical conversion and MAH-g-(PP/PBE) have great potential to improve interfacial adhesion of Al/polymer laminated film used in LIB package.

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Effect of modified polypropylene on the interfacial bonding of polymer–aluminum laminated films

Cited by 42 publications

References 38 publications

Effect of co-monomer on the adhesive performance of PP-g-MAH between cast polypropylene film and aluminum foil

Effect of co-monomer on the adhesive performance of PP-g-MAH between cast polypropylene film and aluminum foil

Evaluation of cementitious repair mortars modified with polymers

Enhancing the interfacial bond strength of aluminum/polymer laminated film of the soft package lithium‐ion battery through polydopamine surface modification

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