32results about How to "Will not embrittle" patented technology

The invention relates to a thermoplastic elastomer (TPE) and modified PP (Polypropylene) co-extruded refrigerator magnetic door seal strip and a manufacturing method thereof. The TPE and modified PP co-extruded refrigerator magnetic door seal strip consists of a fixed substrate part constituted by TPE and a sealing part constituted by modified hard PP, wherein the fixed substrate part and the sealing part form the magnetic door seal strip through co-extrusion thermal fusion; the fixed substrate part consists of a substrate and an assembly plug pin; the sealing part is provided with an air bag and a magnetic strip bag; and the magnetic strip bag is provided with a magnetic strip. The TPE and modified PP co-extruded refrigerator magnetic door seal strip is a soft and hard co-extruded magnetic door seal strip consisting of the TPE material serving as a sealing strip part and a substrate hard PP material capable of fixing the door seal strip, and can be suitable for magnetic door seal strips for all refrigerators; the sealing part of the door seal strip is made of the TPE material; and thus, the requirement of environmental protection is met, and the low-temperature performance, the resilience performance and the mechanical performance are extremely superior.

The present invention provides one kind of normal pressure dyeable polyester and its preparation process, and the polyester may be used in producing fiber product with stable quality and high light resistance no matter water color shade is. The present invention features that the polyester has main repetition units of ethylene terephthalate, and contains metal sulfonate containing isophthalic acid component in 2.0-3.0 mol% of the acid components, polyalkylene glycol of average molecular weight 150-600 in 1.5-4.0 wt% of polyester, diglycol in 4.5-6.5 mol% of the diol components and terminal carboxyl group concentration of 20-30 equivalent / ton.

The invention discloses a novel sound absorbing and insulating and heat insulating material which can be formed by sound absorbing and insulating cotton felt and can be also compounded by the sound absorbing and insulating cotton felt and an elastic sponge body through damp compound viscose. The sound absorbing and insulating cotton felt is made of interposition aramid fiber 1313; the elastic sponge body is a silicon rubber sheet with the thickness of 0.2-0.3 mm; and the hydrophobic property of the sound absorbing and insulating and heat insulating material is 95 percent. The novel sound absorbing and insulating and heat insulating material is environment friendly and incombustible, has no pollution, long using time and good hydrophobic property, can resist high temperature and can be used as the sound absorbing and insulating and heat insulating material for aerospace vehicles and various vehicle wall plates and acoustic decoration material for halls and stadiums.

The invention provides a method for preparing hard alloy through stability regulation and control and belongs to the technical field of hard alloy material and powder metallurgy. The method includes the steps that firstly, round hard alloy bars are prepared, the two round hard alloy bars are taken and are vertical up and down, the ends of the two round hard alloy bars are adjacent, and the two round hard alloy bars are sequentially arranged in a vertical floating region of a zone melting furnace and vacuumized; the operating power is set to be 60%-95% of the total power, the power is increased to the set power within 20-30 minutes, after the contact ends of the round hard alloy bars form the beam-shaped stable molten state, the round hard alloy bar on the lower side descends, and the round hard alloy bar on the upper side descends synchronously till the round hard alloy bar on the upper side is taken out and serves as the hard alloy bar obtained after zone melting; and the hard alloy bar obtained after zone melting is arranged in a vacuum heat treatment furnace or a carbonizing oven, the carbonization atmosphere such as methane or carbon monoxide is injected, heat is preserved for 1-3 hours at the temperature ranging from 900 DEG C to 1,100 DEG C, the hard alloy bar is cooled to the room temperature along with the furnace, and then a super-coarse grain hard alloy bar is obtained. The super-coarse grain hard alloy with the excellent performance can be prepared.

The invention provides a method for preparing hard alloy through stability regulation and control and belongs to the technical field of hard alloy material and powder metallurgy. The method includes the steps that firstly, round hard alloy bars are prepared, the two round hard alloy bars are taken and are vertical up and down, the ends of the two round hard alloy bars are adjacent, and the two round hard alloy bars are sequentially arranged in a vertical floating region of a zone melting furnace and vacuumized; the operating power is set to be 60%-95% of the total power, the power is increased to the set power within 20-30 minutes, after the contact ends of the round hard alloy bars form the beam-shaped stable molten state, the round hard alloy bar on the lower side descends, and the round hard alloy bar on the upper side descends synchronously till the round hard alloy bar on the upper side is taken out and serves as the hard alloy bar obtained after zone melting; and the hard alloy bar obtained after zone melting is arranged in a vacuum heat treatment furnace or a carbonizing oven, the carbonization atmosphere such as methane or carbon monoxide is injected, heat is preserved for 1-3 hours at the temperature ranging from 900 DEG C to 1,100 DEG C, the hard alloy bar is cooled to the room temperature along with the furnace, and then a super-coarse grain hard alloy bar is obtained. The super-coarse grain hard alloy with the excellent performance can be prepared.

The invention belongs to the technical field of plastics, and particularly relates to a preparation process of a polypropylene material, which comprises the following steps: 1, preparing the followingraw materials in percentage by mass: 60-75% of propylene raw material, 2-6% of epoxidized soybean oil, 5-16% of powdered acrylonitrile-butadiene rubber, 0.5-1% of plasticizer DOS, 0.5-1% of plasticizer DOA, 6-9% of butadiene, 1-2% of modifier, 1-4% of stabilizer and 1-2% of a catalyst. In the preparation process of the polypropylene material, by setting blending modification, a mixture generatedby blending powdered nitrile rubber, a plasticizer DOS and a plasticizer DOA is used as a reinforcing body, so that the low-temperature impact resistance of the polypropylene material is greatly improved, and the polypropylene material can work even at the temperature of -45 DEG C and is free of being embrittled; in addition, by means of epoxidized soybean oil, the prepared polypropylene materialcan be endowed with good mechanical strength, weather resistance and electrical property, and is non-toxic.

The invention provides a flexible sound-insulation composite material. The composite material is mainly composed of high-density particles, a viscoelastic thermoplastic material and a flexible framework which is easy to bent and can resist stretching and shearing damages. The composite material prepared by the invention has excellent properties of high strength, high density, fire resistance, no toxin and environment friendliness, corrosion resistance and good sound-insulation effect and can be widely applied to industries including highway traffic, urban rail transit, machinery equipment, house building, ships, home decoration, industrial product packaging and the like. Furthermore, the invention also provides a preparation method of the flexible sound-insulation composite material. A sheet material with low odor, low VOC (Volatile Organic Compound) content, low volatile matter content and good mechanical property indexes of the product is obtained through strictly controlling the extruding temperature and the post-period heating temperature to reduce decomposition and molecular migration of the material, and is an environment-friendly material.

The invention relates to a production process of a four-way stretch fabric, which belongs to the field of textiles. The present invention comprises the following steps: weaving→pretreatment→mechanical soft finishing→grain fabric presetting→two-bath dyeing→low temperature heat setting→preshrinking, the obtained four-way stretch fabric shows nylon yarn on the front side and high wet modulus fiber on the back side yarn. In the present invention, through the cooperation of reasonable fibers and tissue structures, the adjustment of procedures and processes, and the reasonable selection of dyeing and chemical materials, the obtained four-way stretch fabric is not only comfortable and wear-resistant, but also has good color fastness and stable shrinkage. The technical problem that fabric exists in the prior art is solved.

The invention relates to a preparation method of a thermoplastic polyurethane elastomer with high haze and high wear resistance. The preparation method comprises the following steps: firstly, uniformly stirring and melting polyester polyol, small molecule diol, a chain extender, a catalyst, an antioxidant agent, a light stabilizer and cyclic polydimethylsiloxane according to certain mass proportions for later use; secondly, metering a product obtained in the first step and diisocyanate by a high-precision flowmeter, then carrying out rapid mixing by a gear pump and a mixing head with high rotating speed, subsequently, pouring a mixture into a double-screw extruder, carrying out sufficient melting reaction by the extruder and then obtaining the thermoplastic polyurethane elastomer with high haze and high wear resistance by an underwater granulator. The product disclosed by the invention can be used for occasions such as wire guide roller frameworks, wire guide rollers, mechanical parts, shaft seals, football soles, sports shoes supporting frames or automobile parts; in addition, the product has good comprehensive performance and good processing performance, belongs to an environment-friendly product, and can be used for replacing general plastics and partial engineering plastics.

A fluid carrier assembly of an ultraviolet light emitting diode module with inorganic packaging in the present invention includes a fluid carrier that can be selectively opened and an ultraviolet light emitting diode module. The fluid carrier can be any shape, such as a cup, a bottle with a lid, and the like. The inorganic package ultraviolet light emitting diode module is mainly composed of a metal package body and a light emitting diode. The ultraviolet light emitted by the light emitting diode can sterilize the fluid contained in the fluid carrier, so as to achieve the purpose of providing clean fluid.

The invention discloses an ultraviolet sterilization module for an escalator handrail. The ultraviolet sterilization module comprises a ceramic substrate, a titanium layer formed on the side face of the ceramic substrate, a patterned copper layer formed on the surface of the titanium layer, an ultraviolet chip fastened to one side of the patterned copper layer, an upper frame and quartz glass combined to one side of the upper frame. Furthermore, a layer of aluminum substrate (MCPCB) is fixedly arranged on one side of the ceramic substrate, and a heat dissipation structure is additionally arranged on one side of the aluminum substrate. The module also comprises a shell which can cover all the components and can be structurally arranged at one end of an escalator handrail so as to shield ultraviolet light emitted by the ultraviolet light chip and prevent the ultraviolet light from leaking. Therefore, the ultraviolet light chip can be used for continuously emitting ultraviolet light to the escalator handrail to sterilize the escalator handrail.

The invention relates to a contactless smart card, which includes: an antenna (12) located on an antenna base (10) made of fiber material, the antenna including turns printed on the antenna base with a silk screen and two contacts (14 , 16), a card body (32, 34) on each side of the antenna base, and a chip (26) with contacts (28, 30) connected to the antenna. The card also features a chip base (20) made of fiber material, the latter (20) having two conductive contacts (28, 30) screen printed on it and connected to the contacts (28, 30) of the chip (26). Strips (22, 24) on which the chip base (20) is positioned on the antenna base (10) such that these conductive strips (22, 24) are in contact with and connected to the contacts (14, 16) of the antenna and enable The chip (26) is located in a cavity (18) formed in the antenna base (10) for this purpose.

The invention relates to composite materials based on tungsten carbide and comprising gold, palladium and / or platinum and to a method for producing said composite materials by sintering. By means of the FAST method, hard and biocompatible WC / (Au, Pd, Pt) composite materials can be produced, inter alia for use as coatings on tools and prostheses and as solid bodies in, for example, blood pumps.