A thermoplastic polymer alloy compositions including a blend of polymers that each contribute beneficial properties to the compositions. The compositions exhibit characteristics desirable for outdoor applications such as weatherability, impact resistance and durability, while offering excellent surface appearance. The compositions are particularly suitable for decking applications and as capstock materials.

A method may be employed to produce a variable-length steering shaft. The method may involve positioning a shaft core within a mold cavity of an injection molding tool coaxially with respect to a mold surface that delimits a toothing region, injecting molten plastic into the mold cavity between the shaft core and the mold surface of the mold cavity, removing a toothed shaft from the injection molding tool after the molten plastic has solidified, providing a hollow shaft and axially inserting the toothing region into an internal toothing of the hollow shaft. To make it possible to provide an improved sliding coating with the least possible manufacturing outlay, the injection of the molten plastic may be performed from one axial end region of the mold cavity.

The present invention relates to a carbon composite, which comprises a polymer resin and a carbon material having specific conditions, thereby controlling a dielectric constant. According to the present invention, the carbon composite and a method for controlling a dielectric constant by using the same can be variously applied to a circuit, an electronic material and the like by establishing a correlation between the specific surface area of the carbon material and the dielectric property of the carbon composite.

Disclosed herein is a thermoplastic moulding composition including a) from 50 to 96.95% by weight of polyamide containing aliphatic non-branched C.sub.10-12 building blocks, selected from polyamide 6.10 and mixtures of polyamide 6.10 with polyamide 6.12, polyamide 12.12, polyamide 11 and/or polyamide 12, b) from 0 to 37% by weight of further polyamide different from component A); c) from 3 to 30% by weight of polyamide-polyether block copolymer; d) from 0.05 to 1.5% by weight of hindered amine light stabilizer, e) from 0 to 1% by weight of sterically hindered phenol oxidation retarder; f) from 0 to 20% by weight of further additives, where the total of the percentages by weight of a) through f) is 100% by weight and the total of the percentages by weight of b) and c) is not more than 40% by weight.

A method for producing, by welding, a joint between a thermoplastic matrix composite material and an elastomeric material. The elastomeric material is functionalized by incorporating, onto the surface of the elastomer, a nonwoven fabric consisting of fibers of thermoplastic material. The functionalized surface of the elastomeric material is welded to the thermoplastic material of the composite. The functionalization of the elastomeric material is performed during the vulcanization of the raw elastomer. The vulcanization is performed under a sufficient pressure for the nonwoven fabric placed on the surface of the raw elastomer to become incorporated with same, at least at the surface, during the vulcanization process. The welding operation includes interposing a metal fabric coated with thermoplastic material between the surfaces of the elastomer and the composite that are welded to each other, and passing an electric current through same, resulting in the surface melting of the two materials.

A method for producing, by welding, a joint between a thermoplastic matrix composite material and an elastomeric material. The elastomeric material is functionalized by forming a thin layer of elastomeric material incorporating particles of thermoplastic material and melting the thin layer onto the surface of the elastomeric material during the pressure-vulcanization of the elastomer. The functionalized surface of the elastomeric material is welded to the thermoplastic material of the composite. The welding operation includes interposing a metal fabric coated with thermoplastic material between the surfaces of the elastomer and the composite that are welded to each other, and passing an electric current through same, resulting in the surface melting of the two materials.

A corrosion-resistant abradable covering to adhesively bond to a wear portion of a structural part, the covering including at least a polyester-based matrix and an aluminum alloy filler that are molded together.

A method for manufacturing a massage wear-resistant treadmill deck and a finished product thereof are provided. The method includes step 1: providing a mold, the mold having a plurality of cavities thereon, a wear-resistant material being injected into the cavities of the mold; step 2: placing a deck in the mold so that the wear-resistant material is bonded to a surface of the deck to form a plurality of massage protrusions on the deck; and step 3: demoulding the deck from the mold, the surface of the deck being formed with the massage protrusions to form the massage wear-resistant treadmill deck. A wear-resistant layer having the massage protrusions is first formed in the mold, and then the deck is placed into the mold to bond with the wear-resistant layer to form the massage wear-resistant treadmill deck. The manufacturing cost is reduced and the manufacturing mobility is improved.

A masterbatch composition including glass bubbles and a toughening agent in a blend of syndiotactic 1,2-poly-butadiene and cis-1,4-polybutadiene is disclosed. The glass bubbles are present in an amount of at least 25 percent by weight, based on the total weight of the masterbatch composition. A method of making a rubber composition from the masterbatch composition is disclosed as well as a rubber composition and vulcanized rubber made from the masterbatch composition. A rubber composition that includes syndiotactic 1,2-polybutadiene, cis-1,4-polybutadiene, a toughening agent that includes at least one of a fluoroplastic or an organic or ceramic fiber, and glass bubbles in an amount up to 25 percent by weight, based on the total weight of the rubber composition, is also disclosed.

The present disclosure relates to a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same. The thermoplastic resin composition includes graft copolymer (A) including a polymer seed including 51 to 77 % by weight of an alkyl (meth)acrylate and 23 to 49% by weight of an aromatic vinyl compound, a rubber core surrounding the polymer seed and including 78 to 90% by weight of an alkyl acrylate and 10 to 22% by weight of an aromatic vinyl compound, and a graft shell surrounding the rubber core and including 65 to 80% by weight of an aromatic vinyl compound, 14 to 25% by weight of a vinyl cyanide compound, and 3 to 15% by weight of an alkyl acrylate; and a non-graft copolymer (B) including an alkyl (meth)acrylate, an alkyl-substituted styrene-based compound, and a vinyl cyanide compound.