A packaging material comprising a graphene-reinforced polymer matrix composite (G-PMC) is disclosed. The packaging material has improved barrier resistance to gas and liquid permeants. Also disclosed is a method of improving barrier resistance of a polymer to a permeant, the method comprising forming a graphene-reinforced polymer matrix composite within the polymer. The packaging material may be used for packaging food, drug, perfume, etc. and to make various containers.

A hybrid metal composite (HMC) structure comprises tiers comprising fiber composite material structures, and additional tiers longitudinally adjacent one or more of the tiers and comprising perforated metallic structures and additional fiber composite material structures laterally adjacent the perforated metallic structures. Methods of forming an HMC structure, and related rocket motors and multi-stage rocket motor assemblies are also disclosed.

Described herein is a multilayer microporous film or membrane that may exhibit improved properties, including improved dielectric break down and strength, compared to prior monolayer or tri-layer microporous membranes of the same thickness. The preferred multilayer microporous membrane comprises microlayers and one or more lamination barriers. Also disclosed is a battery separator or battery comprising one or more of the multilayer microporous films or membranes. The inventive battery and battery separator is preferably safer and more robust than batteries and battery separators using prior monolayer and tri-layer microporous membranes. Also, described herein is a method for making the multilayer microporous separators, membranes or films described herein.

A block copolymer including a polymer block (A) containing more than 70 mol % of a unit derived from an aromatic vinyl compound, and a polymer block (B) containing 30 mol % or more of a unit derived from a conjugated diene compound is provided. The block copolymer satisfies the conditions: (1): a content of the polymer block (A) in the block copolymer is 1 to 70% by mass; (2): a maximum width of a series of temperature regions where tan δ measured in accordance with JIS K7244-10 (2005), under conditions including a strain amount of 0.1%, a frequency of 1 a measurement temperature of −70 to 100° C., and a temperature rise rate of 3° C./min, is 1.0 or more is less than 16° C.; (3): a temperature at a peak position of tan δ in the condition (2) is 0° C. to +50° C.; and (4): a mobility parameter M indicating a mobility of the polymer block (B) is 0.01 to 0.25 sec.

A liquid-crystal polymer includes at least one repeating unit having a spiro structure, and the repeating unit occupies 1 mol % to 20 mol % of the liquid-crystal polymer. The liquid-crystal polymer is composed of the following repeating units: 1 mol % to 20 mol % of ##STR00001##
10 mol % to 35 mol % of ##STR00002##
10 mol % to 35 mol % of ##STR00003##
10 mol % to
50 mol % of ##STR00004##
and 10 mol % to 40 mol % of ##STR00005##
AR.sup.1 is ##STR00006##
wherein each of ring R and ring S is independently a C.sub.3-20 ring, ring R and ring S share a carbon atom, and each of K.sup.1 and K.sup.2 is independently a C.sub.5-20 conjugated system. Each of AR.sup.2, AR.sup.3, AR.sup.4, and AR.sup.5 is independently AR.sup.6 or AR.sup.6—Z—AR.sup.7.

A stitched fabric including a foam core and a yarn stitched through and forming stitch holes in the foam core, where the yarn extends over at least a majority of a width and a length of the stitched fabric. In some cases, the yarn and the foam core are free from contact by another layer on either side of the foam core. In some cases, a barrier layer is disposed over at least one side of the foam core and a melted portion of the barrier layer fills a portion of the stitch holes. In some cases, the foam core is a closed cell aerogel foam core.

A structural member including a lightweight core, one or more skins, and a crosslinking nanolayer interposed therebetween that results in significant mechanical strength in the structure. The core is a polymer of reduced density by way of included voids, such as an open or closed cell foam, honeycomb, or corrugated structure. The core polymer has a lower density and may have a higher softening or melting temperature than the polymer skin materials. The core may be discontinuous at the interface with the skin such that only a small percentage of the core surface is actually in contact with the skin compared to the overall area of the interface. The skin may be a thermoplastic layer that attaches to the core material. The skin may be a composite material including non-thermoplastic reinforcements. The crosslinking nanolayer is covalently bonded to the surface of the core material and provides molecular compatibility with the skin material.

The present disclosure relates to an step artificial leather having visual penetration and a manufacturing method thereof. The artificial leather includes a thermoplastic substrate, a thermoplastic adhering layer, and a thermoplastic surface layer. The thermoplastic substrate has fiber net shape, and has visual penetration. The thermoplastic adhering layer is disposed on the thermoplastic substrate. The thermoplastic surface layer is disposed on the thermoplastic adhering layer. The thermoplastic surface layer and the thermoplastic adhering layer are transparent. Therefore, the artificial leather of the present disclosure has visual penetration effect. The product made from the artificial leather of the present disclosure has attractive appearance and diversity.

A resin material and a metal substrate are provided. The resin material includes a resin composition and inorganic fillers. The inorganic fillers are uniformly dispersed in the resin composition. The resin composition includes 2 wt % to 40 wt % of a liquid rubber, 5 wt % to 60 wt % of a polyphenylene ether resin, 3 wt % to 40 wt % of a crosslinker, and 5 wt % to 40 wt % of a phosphorus flame retardant. A structural formula of the phosphorus flame retardant is shown as Formula (I):

##STR00001##

A composite which comprises a first layer of a fibre reinforced polymer and a second layer of a fibre reinforced polymer, between which is an intervening layer comprising an array of thermoplastic islands.