152results about How to "Change hardness" patented technology

The invention relates to paint and a preparation method thereof and discloses solvent-free polyaspartic acid ester polyurea elastic waterproof paint. The solvent-free polyaspartic acid ester polyurea elastic waterproof paint is composed of a component A and a component, wherein the component A comprises 2%-35% of polyisocyanate and 65%-98% of end seal isocyanate prepolymer by weight percent; and the component B comprises 20%-60% of polyaspartic acid ester, 10%-40% of polymeric modified poly aspartic acid ester, 5%-30% of stuffing and a small amount of additives by weight percent. Compared with the polyurea paint processed by the polyaspartic acid ester, the solvent-free polyaspartic acid ester polyurea elastic waterproof paint processed by raw materials has the advantages that the construction is convenient, a special large-scale spraying device is not needed, the gelation time is prolonged, the surface drying time is shortened, the tensile strength is enhanced, the elongation at break is increased, and the elastic coating film hardness is increased, does not have a solvent, is environment-friendly and harmless to a human body.

The invention discloses a timber softening fluid which is prepared from the following raw materials in parts by weight: 35 to 45 parts of semi-refined paraffin wax No.58, 15 to 25 parts of a softening agent containing multiple chemical components, 5 to 7 parts of boric acid and 35 to 45 parts of water.

The invention discloses a low-temperature conductive silver paste and a preparation method thereof, relating to conductive silver paste materials and aiming at solving the problems of high cost and large resistance of conductive silver pastes used for a printing industry. The low-temperature conductive silver paste comprises the following components in percentage by weight: 45% of silver powder, 6% of additive bismuth oxide, 6.2% of macromolecule resin vinyl chloride-acetate, 6.2% of macromolecule resin polyester, 34% of solvent DBE and 2.6% of solvent isophorone. The preparation method comprises the following steps of: a, weighing and mixing the solvent DBE, the solvent isophorone and macromolecule resins according to weight percentage to obtain an organic carrier; b, weighing the silver powder and the additives according to the weight percentage, and then mixing with the organic carrier obtained from the step a in a stirring way to obtain a uniform paste; and c, grinding and rolling the paste obtained from the step b to obtain the low-temperature conductive silver paste.

The present invention belongs to the field high molecular material technology, and especially one improved thermoplastic elastomer material and its preparation. Into S.E.B.S body material PP, PE, PS,EVA and other plastic capable of being cross linked with the body material are added to improve the hardness, elongation strength, elongation are and other physical performance and to widen the application range.

The knitting machine (1) has a yarn feeding portion (2), an active region (3), and a thread tension compensating device (11) between the yarn feeding portion and the active region. The quality of knitted fabric is reduced to the minimum through a simple method. Therefore, the thread tension compensating device (11) can be actuated from the outside through a control device (17, 24) with which a natural frequency of the tension compensating device is varied.

The invention provides a tool for ball screw pair outer raceway grinding and grinding force loading. The tool comprises a flexible nut, a grinding outer cover, a sensor assembly, a thread end cap, a polyurethane elastic body, a polyurethane buffering body and an outer cover base. The outer cover base is arranged at the front end of the grinding outer cover and forms a grinding cavity with the grinding outer cover, a first lead screw through hole is formed in the outer cover base, and the flexible nut is arranged in the grinding cavity and connected with a lead screw in a matched mode. The flexible nut is sleeved with the polyurethane buffering body, and the polyurethane buffering body is sleeved with the polyurethane elastic body. The inner wall of the polyurethane elastic body and the outer wall of the polyurethane buffering body are tightly matched, and the outer wall of the polyurethane elastic body and the inner wall of the grinding cavity are tightly matched. The thread end cap is provided with a second lead screw through hole and extends into the grinding cavity to be fixed from the rear end of the grinding outer cover, the sensor assembly is arranged between the thread end cap and the polyurethane elastic body and provided with tension and pressure sensors, and the pressure sensors measure the axial pressure of the thread end cap on the polyurethane elastic body.

A method of joining aluminum alloy members, including the steps of: obtaining a joined body including: (a) contacting aluminum alloy members each made of a 6000 series aluminum alloy with T4 temper; and (b) performing a friction stir welding operation on a contact portion of the aluminum alloy members at which they are held in contact with each other, so as to form a stir zone at the contact portion; and performing, on the obtained joined body, an underaging treatment which is an artificial aging treatment and which is completed before hardness of the stir zone reaches maximum hardness, the underaging treatment being performed before GP zones are formed at the stir zone of the joined body.

The invention discloses a novel mud therapy product for emitting heat by being applied outside human body, which is used for conditioning and relieving difficult and baffling joint pain symptoms such as cervical spondylosis, scapulohumeral periarthritis, prolapse of lumbar intervertebral disc, rheumatism, rheumatoid arthritis, hyperosteogeny and the like, and an application thereof. The mud therapy product consists of the following components in parts by weight: 10-80 parts of combined energy clay, 5-40 parts of a Chinese medicinal extract, 6-45 parts of a medical blender and 8-60 parts of beeswax. The mud therapy product disclosed by the invention has a rapid pain relieving effect on pain of neck, shoulders, waist, legs and joints and pain caused by various human body reasons; and compared with the conventional mud therapy product, the novel mud therapy product has the advantages: the service life is prolonged, and cost is saved.

A method for increasing the wet coefficient of friction of a thermoplastic elastomer includes adding various ingredients to the thermoplastic elastomer. In one embodiment microcrystalline wax, amorphous polyalphaolefin ethylene copolymer, and a copolymer ethylene/propylene and olefins are added to the thermoplastic elastomer. And in another embodiment, microcrystalline wax and copolymer ethylene/propylene and olefins are added to the thermoplastic elastomer. The above compositions are formed into a sheet which can be used alone as a slip-resistant pad, or can be applied to a desired surface (such as that of a surfboard).

The present invention relates to a thermally conductive polysiloxane composition comprising: (A) a thermally conductive filler, (B) a siloxane compound having a specified structure; (C) an alkoxysilane compound having a specified structure; (D) a polyorganosiloxane containing at least one aliphatic unsaturated group per molecule; (E) a polyorganohydrogensiloxane having two or more hydrogen atoms bonded to silicon atoms per molecule; and (F) a platinum-based catalyst.

The invention relates to the field of sealing and particularly relates to a rubber barrel with relatively hard upper and lower end parts, which is used in an oil exploitation process and can bear high temperature and high pressure, a packer and a bridge plug. According to one aspect of the invention, the rubber barrel is provided; and the hardness of the upper end part of the rubber barrel is greater than that of the middle part of the rubber barrel, so that the deformation of the middle part in the radial direction is greater than that of the upper end part in the radial direction when the upper end part bears first axial pressure. The hardness of the upper end part of the rubber barrel is greater than that of the middle part of the rubber barrel, so that the upper end part is almost used for transmitting the first axial pressure to the middle part and the lower end part, but not utilizes the first axial pressure to self radial deformation when the upper end part bears the first axial pressure. Therefore, the middle part and the lower end part have the radial deformation when the relatively small first axial pressure is used, and the sealing of the whole rubber barrel is realized.

A coating blade of wear proof type used in paper making process consists of steel blade body. It is featured as using a layer of alloy coat sprayed on surface of steel blade body as transition layer, using a layer of intermetallic compound / fine ceramics composite material sprayed on surface of alloy coat as operation layer to form three layer structure of coating blade with hardness of HRC 50-65.

This invention relates to diamond vibration film and its process method, which comprises the following steps: forming different heating effect according to distance difference of non even energy of mode curved surface and isolation gas, such as resistance wires, electrical slurry and flares through one mode; filming the diamond materials onto mode surface to make diamond materials grow difference with non even vibration characteristics.

The invention relates to the technical field of elastic devices, in particular to an elastic body with adjustable hardness and height and an application thereof. The elastic body comprises an upper elastic body and a lower telescopic body, wherein the upper elastic body comprises at least one elastic unit; the elastic units are longitudinally and transversely arranged; each elastic unit sleeves a bag type structure, or a traction mechanism is directly arranged at the upper end of each elastic unit; the telescopic body consists of a base and a movable support, and the movable support is arranged on the base; the lower end of each elastic unit is fixedly arranged on the movable support; a pull rope is fixedly arranged on each bag type structure or each traction structure; multiple elastic units share one pull rope, or one elastic unit uses multiple pull ropes or one elastic unit uses one pull rope; each pull rope penetrates through the corresponding elastic unit along the axis of the corresponding elastic unit or penetrates through a gap between the elastic units, or multiple pull ropes penetrate through the interior or the surrounding of the elastic body, continue to penetrate through the movable support and are connected with the base; the movable support is moved up and down to drive the bottom part of each elastic unit to compress or loosen the corresponding elastic unit, so as to adjust the hardness and/or the height of the elastic body.

The invention discloses a molding machine for a foam filling material. The molding machine comprises a frame, a controller and a coldwater machine. The frame comprises a bottom bracing frame and a front support, a middle support and a rear support which are arranged on the bottom bracing frame. A cooling furnace, a first heating furnace, a second heating furnace, a first molding die, a second molding die, a front hook plate and a rear hook plate are disposed on the bottom bracing frame. An upper template and a lower template of the first molding die are positioned between an upper heating plate and a lower heating plate of the first heating furnace and are respectively connected with the upper heating plate and the lower heating plate. An upper template and a lower template of the second molding die are positioned between an upper heating plate and a lower heating plate of the second heating furnace and are respectively connected with the upper heating plate and the lower heating plate. After molding and processing, a molding sheet has an expected dimension so as to bring convenience for a subsequent cladding process of a composite material. In addition, strength, toughness and service life of the foam filling material are all effectively raised. And the product quality is significantly enhanced.

The invention relates to a new material for changing processed broken chip which comprises the chemical composition with the weight percentage: 6.5-7.5% of SI, 0.45-0.6% of Fe, 0.7-1.0% of Mg, Mn being more than half of Fe, 0.05% of Cu Max, 0.07% of Zn Max, 0.08-0.25% of Ti and the rest of Al. The chemical composition of the material is adjusted, so that the elongation and hardness value of cast parts are changed after heat treatment is carried out on the cast parts, thus achieving the effect of changing the difficulty of processing broken chip.

The invention discloses a 60-degree natural rubber and a production process of the 60-degree natural rubber. The raw materials of the 60-degree natural rubber comprise 48%-65% of raw natural rubber, 1%-2.5% of vulcanizator, 5%-21% of high wear-resistant furnace black, 8%-28% of spraying carbon black, 5.5%-17% of active agent, 0.1%-0.6% of accelerator, 0.55%-3.2% of anti-aging agent and 0.5%-3% of plasticizer, and the natural rubber is produced by processes of plasifying and mixing. The 60-degree natural rubber has the advantages of good ageing resistance, good elongation at rupture, excellent wear resistance, good rebound value, good load compression amount and natural frequency; meanwhile, the rubber is low in production cost.

The invention discloses a mattress 10. The mattress includes a left assembly 10 and a right assembly 20 disposed side by side. The left assembly is composed of a plurality of piled mattress layers 11, 12, 13. The right assembly is composed of a plurality of piled mattress layers 21, 22, 23. An interlay layer covers an upper mattress layer 11 of the left assembly and an upper mattress layer 21 of the right assembly. A mattress sheath 40 warps the left assembly 10, the right assembly 20 and the interlay layer to form the mattress. The upper mattress layer 11 of the left assembly 10 has different rigidity with the neighboring lower mattress layer 12. The upper mattress layer 21 of the right assembly 20 has different rigidity with the neighboring lower mattress layer 22. And no elastic tool is adopted in the mattress 100.