41results about How to "Excellent compression recovery performance" patented technology

A polylactic acid foam obtained from a resin composition comprising polylactic acid (A), a polyolefin resin (B), and a polyolefin resin copolymer (C), characterized in that the ratio of the weight of the polylactic acid (A) to the total weight of the polyolefin resin (B) and the polyolefin resin copolymer (C), (A) / {(B)+(C, in the resin composition is 0.2-6. The polylactic acid foam is a foam made from a polylactic acid resin, which burdens the environment little, and excellent in heat resistance, moldability, and compression recovery. This polylactic acid foam is suitable for use in various applications where polyolefin resin foams are used at present, such as automotive applications, bases for heat insulators, cushioning materials, packing materials, pressure-sensitive adhesive tapes, etc., and joint filling materials.

The present invention provides a foam comprising (a) a polylactic acid resin, (b) at least one thermoplastic resin selected from a polyolefin resin and a polystyrene resin, and (c) a block copolymer of a vinyl aromatic compound and a conjugated diene, wherein a ratio of (a) to (b) by weight (a / b) is 80 / 20 to 20 / 80, and the foam comprises 0.5 to 20 parts by weight of (c) with respect to 100 parts by weight of (a) and (b) in total.

An elastic knitted fabric having a multilayer structure, made by binding separate front and back two-layer ground knitted fabrics together, wherein the above described two-layer ground knitted fabrics are bound together with only a bare string(s) of polyurethane based elastic fibers of 17 to 3000 decitexes. <IMAGE>

A press felt for papermaking comprises a base body, a fibrous assembly, and a three-dimensional knitted fabric layer comprising two pieces of fabric connected by connecting fibers. The three-dimensional knitted fabric layer is disposed within the press felt at a distance from both the wet paper web contact surface and the machine contact surface of the felt. At least some of the connecting fibers are diagonal fibers.

The invention belongs to the technical field of cables, and relates to a photoelectric composite cable with a special-shaped filling material. The cable comprises a reinforcing part, a plurality of power transmission conductors which are located at an outer side of the reinforcing part and sequentially tangential or slightly separated, optical fiber communication units located in gaps outside the adjacent power transmission conductors, a protection layer wrapping the power transmission conductors and the optical fiber communication units, and a sheath layer which covers the protection layer in an extruding manner. The cable is characterized in that the gaps outside the adjacent power transmission conductors are provided with special-shaped ropes; the special-shaped ropes are formed by the sequential jointing or one-time extrusion molding of a plurality of small-structure filling rope bodies; the outer edges of the small-structure filling rope bodies are respectively a complete cylindrical surface; the power transmission conductors respectively consists of a conductor and an insulating body; and the optical fiber communication units respectively consists of an optical fiber and a protection tube wrapping the optical fiber. The special-shaped ropes are made of materials with a special formula. The cable provided by the invention is simple in structure, is lower in cost, is better in performance, and is more convenient in construction.

The invention relates to a powerful three-dimensional curly memory fiber and a manufacturing method thereof. Raw materials include: poly(1,4-cyclohexanedimethanol terephthalate) referred to as PCT; propylene glycol terephthalate referred to as PTT; blended and spun through melting and kneading. The invention uses the homogeneously dispersed and stable blend melt formed by melting and blending of polymers to carry out spinning, drawing and other processes to obtain three-dimensional short fibers with excellent curling and memory properties. On the one hand, it is because PCT itself has very good curling and compression recovery properties. In addition, under the synergistic effect of PTT’s high elastic properties, PCT is easier to form multiple and dense curls, and PTT also has excellent memory properties, which can lock Holds the formed curl and always maintains the original curl state.

The invention discloses a polyaniline / graphene / polyvinyl alcohol composite gel. First, graphene oxide and p-phenylenediamine are dispersed and reacted to obtain aniline-containing graphene; aniline and aniline-containing graphene are subjected to water Thermal reaction to obtain polyaniline / graphene composite gel, which is then immersed in polyvinyl alcohol solution for cyclic freezing and thawing treatment. The present invention uses aniline as a reducing agent and a polymerization monomer at the same time, uses aniline to reduce graphene oxide in a hydrothermal reaction, and initiates the polymerization of aniline through the aniline group grafted on the graphene, and realizes the molecular level of polyaniline and graphene. Composite, and further use the hydrogen bond interaction between polyvinyl alcohol and polyaniline to enhance the mechanical properties of the resulting gel, so that the composite gel has good compression recovery performance, which can be used to prepare compressible supercapacitors, etc.; and the preparation method involved is simple , mild reaction conditions, adjustable composite gel components, suitable for popularization and application.

The invention relates to the field of functional materials. In order to solve the deficiencies and defects of the traditional infrared fire alarms and smoke alarms in the using process at present, theinvention provides a novel resistance type fire detection / early-warning sensor, which is formed by connecting a low-voltage power supply, a warning lamp, a fire early-warning composite material and aplurality of lead wires in sequence, wherein the fire early-warning composite material is prepared from, by weight, 25-45 parts of melamine foam, 8-40 parts of graphene oxide and 15-67 parts of silicon-containing additive. The process is simple and efficient, and the raw material is low in cost. The invention further provides an application of the resistance type fire detection / early-warning sensor. The resistance type fire detection / early-warning sensor is used for monitoring and preventing various types of combustible materials in a high fire risk region, reducing or even avoiding the occurrence of fires and loss caused by the fires.