943results about "Natural rubber adhesives" patented technology

The invention relates to an energy-saving high strength aramid fiber conveyer belt and a preparation method thereof. The conveyer belt is composed of a skeleton layer, adhesive glue and an upper-lower cover adhesive laminated structure. Firstly, the skeleton layer employs aramid fiber canvas after dipping treatment to replace a conventional steel wire rope, so that the problems of large weight of the steel wire rope which brings much inconvenience for processes of shaping, installing, maintaining and the like is solved. Secondly, the aramid fiber canvas has structure in broadwise direction, has excellent anti-tear and anti-impact performances, so that phenomena of longitudinal tear and the like of the steel wire rope conveyer belt cab be prevented. Compared with a conventional steel wire rope high strength conveyer belt, the energy-saving high strength aramid fiber conveyer belt has high strength, good corrosion resistance, wear resistance and impact and fatigue resistance, and greatly reduce the weight and thickness of the conveyor belt, so that conveying power energy consumption is saved. The energy-saving high strength aramid fiber conveyer belt is expected to have longer service life and better energy-saving and environment-friendly properties, and is particularly suitable for long-distance material conveyance in industries such as coal mine, metallurgy, mine, etc.

The present invention is directed to an antistatic pressure sensitive adhesive. The antistatic pressure sensitive adhesive comprises a pressure sensitive adhesive, and an antistatic agent comprising at least one organic salt. Certain embodiments of the antistatic pressure sensitive adhesive also have a luminous transmission of greater than about 89% according to ASTM D 1003-95. Additional embodiments of the antistatic pressure sensitive adhesive have a haze of less than about 5% according to ASTM D 1003-95, and in specific embodiments the haze is less than about 2% according to ASTM D 1003-95.

A formaldehyde-free wood adhesive film comprises the following components in parts by weight: 100 parts of basic material, 1 to 300 parts of filler, 0.1 to 10 parts of a cross-linking agent, 0.01 to 10 parts of a cross-linking accelerator, 1 to 15 parts of a stabilizer, 1 to 20 parts of a tackifier, 0 to 10 parts of a coupling agent, 1 to 30 parts of a surfactant and 0.5 to 10 parts of a lubricant, wherein the basic material is at least two of chloride high polymer, chlorosulfonated high polymer, ethylene vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, polyolefin and rubber; and the filler is at least one of organic filler, inorganic filler, compound filler and synthetic filler. The formaldehyde-free wood adhesive film contains no formaldehyde or organic volatile matter so as not to affect and harm the environment and the human health, and is excellent in environmental performance, convenient to use, transport and store and long in shelf life. The formaldehyde-free wood adhesive film is blended, modified and extruded into shape by a plastic extruding film technique.

The invention provides a high-temperature resistant conveyer belt which comprises a framework layer and a covering glue layer which covers the surface of the framework layer, wherein the framework layer is made of a metal material; the covering glue layer is mainly made of ethylene propylene diene monomer rubber and chloroprene rubber and is added with a fire retardant agent, trichloroethyl phosphate, a binding agent and a binding improver apart from a main cross-linking agent, an auxiliary cross-linking agent, an activating agent, an anti-aging agent, a reinforcing agent, a dispersing agent and a softening agent, wherein the binding agent comprises phenolic resin and hexakis(methoxymethyl)melamine; and the binding improver comprises maleic anhydride complexing butadiene and liquid natural rubber. The high-temperature resistant conveyer belt provided by the invention can be used at a temperature of 300 DEG C and has good firing bonding performance and firing resistant performance.

A circuit material, comprising a conductive metal layer or a dielectric circuit substrate layer and an adhesive layer disposed on the conductive metal layer or the dielectric substrate layer, wherein the adhesive comprises a poly(arylene ether) and a polybutadiene or polyisoprene polymer.

The invention discloses a tube-shaped flame retardant conveying belt with fabric laminations for a coal mine, which solves the problem that exiting products are not suitable for usage for underground conveying belts with laminations for coal mines. The conveying belt is characterized by comprising an upper flame retardant covering adhesive layer, a lower flame retardant covering adhesive layer, a side adhesive, skeleton layers, a flame retardant bonding layer and a buffering layer. A flame retardant bonding adhesive is used for bonding among the skeleton layers, among the skeleton layers and buffering layer and between the buffering layer and the upper flame retardant covering adhesive layer to form a whole, and formulas of the flame retardant bonding adhesive and a flame retardant covering adhesive are designed. Flame retardant epoxide resin (EP) canvas which is subjected to flame retardant impregnation processing serves as a skeleton, produced conveying belts have high pipe forming capability, conveying belt bodies have suitable softness, and produced conveying belts can meet turning requirements of tube-shaped conveying belts at different levels and requirements of tube-shaped conveying machines on physical mechanical properties of tube-shaped conveying belts; a flame retardant bonding adhesive material has high infiltration capacity on skeleton materials, after sulfuration, the bonding force of the flame retardant bonding adhesive material is large, dynamic heat is small, and the flame retardant bonding adhesive material has repeated bending fatigue resistance; and abrasion resistant and yielding resistant performance of the flame retardant bonding adhesive material is improved, and the flame retardant performance meets underground flame retardant requirements for coal mines.

A circuit subassembly, comprising a dielectric layer formed from a dielectric composition comprising, based on the total volume of the composition: about 15 to about 65 volume percent of a dielectric filler; and about 35 to about 85 volume percent of a thermosetting composition comprising: a poly(arylene ether), and a carboxy-functionalized polybutadiene or polyisoprene polymer.

The invention relates to a preparation method for a basalt fiber conveying belt, and belongs to the technical field of rubber products. The preparation method comprises the following steps: performing hydrochloric acid treatment, coupling agent treatment and plasma grafting and impregnation treatment on basalt fiber cloth; mixing natural rubber, synthesized rubber, an activating agent, an anti-aging agent, a reinforcement agent and a plasticizer to obtain a first section of mixed rubber; adding a promoter and a vulcanizer for mixing to obtain a second section of mixed rubber, and extruding the second section of mixed rubber to obtain a coverage rubber sheet; mixing the natural rubber, the synthesized rubber, the activating agent, the anti-aging agent, an adhesive, the reinforcement agent and the plasticizer to obtain a first section of mixed rubber; then adding the promoter, the vulcanizer and an adhesive RA for mixing to obtain a second section of mixed rubber, freshening after the second section of mixed rubber is stewed, and attaching the second section of mixed rubber and the basalt fiber cloth to obtain rubberized canvas; attaching the basalt fiber rubberized canvas layer by layer to obtain a framework, attaching the coverage rubber sheets to the upper surface and the lower surface of the framework to obtain a belt blank, and vulcanizing the belt blank to obtain the basalt fiber conveying belt. The conveying belt prepared by the preparation method is low in cost, light in mass, high in intensity, fatigue-resistant and long in service life; the conveying energy consumption can be greatly reduced.

The invention discloses a hot-melt adhesive for a steel-plastic composite pipe, which is prepared by blending and extruding the following components in percentage by weight by a parallel double screw extruder: 5-40% of binding resin master batch, 50-80% of polyolefin resin, 5-25% of tackifying resin and 0.02-5% of inorganic rare-earth oxide, wherein the binding resin is prepared by carrying out graft modification on polyethylene and / or ethylene copolymer, which is / are used as the matrix resin, and initiator (accounting for 0.01-0.2 wt% of the binding resin master batch) and unsaturated polar monomer (accounting for 0.1-5 wt% of the binding resin master batch); the polyolefin resin is used for adjusting the consumption of the binding resin master batch and the comprehensive properties of the hot-melt adhesive; and the tackifying resin is one or combination of SBS (styrene-butadiene-styrene), SEBS (styrene-ethylene-butadiene-styrene), SIS (styrene-isoprene-styrene), cis-1,4-polybutadiene rubber, nitrile-butadiene rubber and natural rubber. Since the rare-earth oxide is added, the grafting ratio of the binding resin master batch in the hot-melt adhesive is increased, thereby obviously enhancing the initial viscosity, enduring viscosity, binding strength and other properties.

This invention relates to compositions useful as adhesives and more particularly to the preparation of epoxy-based adhesive composition with improved impact resistance and good adhesion to oily metal substrates.

The invention relates to a leak-blocking adhesive and a preparation method thereof. The adhesive consists of the following components in part by weight: 15 to 25 parts of synthetic resin, 15 to 30 parts of lubricating grease, 10 to 15 parts of foaming agent, 20 to 35 parts of fibrous filler, 30 to 50 parts of heat-resistant filler and 5 to 10 parts of coloring agent; the synthetic resin, the foaming agent, the heat-resistant filler and the coloring agent are uniformly dispersed and then are added with the lubricating grease and the fibrous filler, the uniformly mixed materials are added into an extruder and are extruded to form a stick shape, and after being cooled to the room temperature, the stick-shaped adhesive is cut. Compared with the prior art, the leak-blocking adhesive can tolerate most of chemical media, is highly universal, can be automatically filled into a neighboring gap when being heated, enhances the leak-blocking effect, prevents the phenomena of adhesive leakage and adhesive spouting, has excellent flowing property before being solidified, is convenient and easy to operate, and has a wide resisted temperature range.

The invention relates to an adhesive tape with textile holder for cable bandaging. The invention relates to an adhesive tape intended preferably for wrapping elongate material, such as lines or cable looms more particularly, having a textile carrier and having a pressure-sensitive adhesive coating applied at least to one side of the carrier. Adhesive tape for jacketing elongate material having a nonwoven-based carrier provided at least on one side with an adhesive coating, the carrier having a basis weight of 30 to 120 g / m2, and the carrier being composed of at least one ply of a preconsolidated nonwoven webfiber, specifically a spinning sticking webfiber, fusing spraying webfiber or mechanically reinforced short fibre webfiber that is overstitched with a multiplicity of threads, and has a thread density of less than 22 threads per 25 mm width of the carrier, preferably between 9-20 threads per 25 mm.

The invention discloses a production process for a bamboo fiber double-dot lining fabric, which includes the steps of base fabric weaving, overflow slack pretreatment, shaping and cropping, feeding, dispensing, baking, after-finishing, rolling, final inspection and packaging. The product adopts 40S bamboo fibers and terylene interlaced yarns as materials, and is differentially woven by a air jet loom, and thereby the bulkiness of the lining fabric is greatly improved; the lining fabric has the characteristics of the bamboo fibers, i.e. moisture absorbability, moisture releasability, bacteria inhibition and bacteria resistance; the handle of the lining fabric is soft; the lining fabric is highly woolly, moreover, in the processes of pretreatment and after-finishing, the base fabric is treated by softening agent in bath, so that ultrathin 'protective films' can be formed on the fibers, consequently, the smoothness, softness and elasticity of the fabric in treatment bath are at appropriate levels in order to reduce fabric entanglement and decrease the coefficient of wet friction between the fabric and mechanical metal parts, as a result, defects, such as creases and scratches, can be prevented from being produced on the surface of the fabric, the quality of the product is guaranteed, and the overall properties of the lining fabric are excellent.

The invention discloses a method for manufacturing an environment-friendly pressure sensitive adhesive material. The method mainly comprises the following steps of: 1, in a closed environment, heating solvent type pressure sensitive adhesive to the temperature of between 60 and 200 DEG C so that the solvent contained in the solvent type pressure sensitive adhesive is evaporated and 50 to 99.9 mass percent of pressure sensitive adhesive is obtained; 2, adding a curing agent into the pressure sensitive adhesive obtained in the step 1, and mixing the curing agent and the pressure sensitive adhesive uniformly by using a vibrating bar or a screw extruder; 3, coating; and 4, rolling. The evaporation time of the solvent during coating the pressure sensitive adhesive can be reduced, so that the coating production efficiency is greatly improved.

The invention provides a method for preparing hydrated adhesive, which solves the problems of disposable usage, difficultly-controlled pasting position, difficult removal and the like in the traditional tackifier fundamentally. The technical key points of the invention are as follows: the hydrated adhesive is prepared by mixedly stirring the following raw materials by weight percent at normal temperature and pressure: 10%-35% of sodium alga acid (C6H7O8Na), 5%-30% of competed hydrate, 20%-50% of water-soluble adhesive and 5%-65% of water. The hydrated adhesive in the invention has the advantages of controllable viscosity, stable physicochemical property, environment protection, capability of repeated use, no residual and the like, and is suitable for caking of solid materials such as various paper, plastic and the like.

The invention discloses a corrosion-resistant high-pressure hose and a production method thereof. The corrosion-resistant high-pressure hose comprises an inner pipe layer (1), a steel wire enhancing layer (3), a middle glue layer (4) and an outer glue layer (6). The hose is characterized in that the inner pipe layer is made from hydrogenated butyl rubber and is coated with an aramid fabric layer (2), the steel wire enhancing layer is wound or woven outside the aramid fabric layer, the middle glue layer, namely a middle glue bonding layer, is arranged outside the steel wire enhancing layer, a second steel wire enhancing layer (5) is wound or woven outside the middle glue bonding layer, the middle glue bonding layer and the wound or woven steel wire enhancing layer are fused together, and the outermost layer of the hose is the outer glue layer which is a protective layer. The production method is implemented through carrying out processes such as banburying and extrusion on materials of the inner pipe layer made from the hydrogenated butyl rubber, the middle glue bonding layer and the outer glue protective layer, and winding the steel wire enhancing layer and coating the aramid fabric layer respectively. The corrosion-resistant high-pressure hose disclosed by the invention is good in stability, strong in corrosion resistance and H2S prevention, and wear-resisting especially; and the impact resistance of the hose is improved, the strength and flexibility of the hose are enhanced, and the service life of the hose is effectively prolonged by more than 50%.