45results about How to "Easy molding process" patented technology

The invention relates to a poly sebacic-co-propanetriol ester biodegradable shape memory polymer and a preparation method thereof. The invention relates to a biodegradable shape memory polymer and the preparation method thereof. A product of the invention is formed by the copolymerization and the cross linking of sebacic acid and propanetriol. The method is as follows: a. a preformed polymer is prepared; and b. the product is obtained by moulding, cross linking and solidifying. The product has the advantages of large deformation, the high restoration ratio of deformation and good biocompatibility. The shape restoration temperature is 0 DEG C to 45 DEG C; the tensile strength is 0.5-10MPa; and the degradation time is 30 to 300 days. The poly sebacic-co-propanetriol ester biodegradable shape memory polymer can be used as material for repairing human body soft tissue injury, such as cornea, retina, skin, blood vessel, connective tissue, islet tissue, musculature, nervous tissue, etc. The method has simple technology and convenient operation.

The disclosure provides in one aspect a head-up display for a vehicle. The head-up display comprises a picture generating unit, an optical system and a light-selective filter. The picture generating unit is arranged to display a picture on a screen. The optical system is arranged to receive light of the picture. The optical system comprises at least one optical element having optical power arranged to form a magnified image of the picture. The light-selective filter is transmissive to light of the picture and reflective to other light. The light-selective filter is disposed between the optical system and the screen. The light-selective filter has a first surface arranged to receive light from the optical system and a second surface arranged to receive light of the picture from the screen.

The invention provides a self-adhered type anti-neutron composite shielding material as well as a preparation method and application thereof. The shielding material is prepared from the following raw materials in parts by weight through radiation pre-crosslinking treatment: 100 parts of a rubber susbtrate, 5-50 parts of a tackifying agent polymer, 10-100 parts of a reinforcing agent, 20-200 parts of an anti-neutron additive, 0-50 parts of a softening agent, 0.5-10 parts of a vulcanizing agent, 0.5-5.0 parts of a vulcanization promoter, 0.5-10 parts of a vulcanization activator and 0-5.0 parts of an anti-aging agent. The invention further provides a preparation method of the shielding material and application of the shielding material in complex equipment or irregular parts. The self-adhered type anti-neutron composite shielding material provided by the invention has certain initial crosslinking degrees and self adhesion properties, is good in shape flow property, can be cured by self after being shaped, and has appropriate mechanical strength.

The invention discloses a cefalexin tablet and a preparation method thereof. A dry granulating process is adopted, and not only is the degradation of beta-lactam rings achieved, but also the problem of low dissolution of products produced through conventional wet granulation is solved. The product is high in stability, a dissolution curve is similar to that of a reference product, and a production process is simple.

The invention relates to a polyester type biodegradable shape memory polymer and a preparation method thereof. The product is essentially formed by the copolymerization and the cross linking of sebacic acid, propanetriol and diol. The method is as follows: a. the sebacic acid and the diol are copolymerized, and the propanetriol is added for copolymerizing; and b. the product is obtained by moulding, cross linking and solidifying. The product has the advantages of large deformation, the high restoration ratio of deformation and good biocompatibility. The shape restoration temperature is 0 DEG C to 45 DEG C; the tensile strength is 0.5-10MPa; and the degradation time is 30 to 300 days. The polyester type biodegradable shape memory polymer can be used as material for repairing human body soft tissue injury, such as cornea, retina, skin, blood vessel, connective tissue, islet tissue, musculature, nervous tissue, etc. The method has simple technology and convenient operation.

The invention provides a self-adhesion gamma-ray rubber composited shielding material and a preparation method and application thereof. The shielding material is prepared from, by weight, 100 parts of rubber base material, 5-50 parts of tackifying polymer, 10-100 parts of reinforcing agent, 10-200 parts of anti-gamma function assistant, 0-50 parts of softener, 0.5-10 parts of vulcanizing agent, 0.5-5.0 parts of vulcanization accelerator, 0.5-10 parts of vulcanizing activator and 0-5.0 parts of anti-aging agent. The invention also provides a preparation method of the shielding material and application of the shielding material in complex equipment or irregular parts. The prepared gamma-ray rubber composited shielding material has a certain degree of initial crosslinking and self-adhesion, has good shape-following property and can be self-curing after forming.

The invention discloses a PVC foaming plate extrusion die, and relates to the technical field of foaming plate extrusion dies. The PVC foaming plate extrusion die comprises a lower die plate and an upper die plate matched with the lower die plate, a flow-division buffer zone, a flow equalization zone and a forming die groove are arranged at the upper surface of the lower die plate in a mode of sequentially communicating with a feeding port, wherein the flow-division buffer zone comprises a buffer groove, a pair of L-shaped guide grooves communicating with the buffer groove are symmetrically formed at the positions, located on the two sides of the buffer groove, of the upper surface of the lower die plate, rectangular flow guide holes are linearly arranged on the opposite side surfaces of the pair of L-shaped guide grooves and at the ends, away from the flow-division buffer zone, of the pair of L-shaped guide grooves, a T-shaped flow guide groove communicating with the feeding port is formed in the lower surface of the upper die plate, the T-shaped flow guide groove communicates with the buffer groove and the pair of L-shaped guide grooves correspondingly, and a pair of L-shaped connection guide grooves are symmetrically fixed on the lower surface of the upper die plate. According to the PVC foaming plate extrusion die, through the lower die plate and the upper die plate which are designed, a foaming material enters the forming die groove in three directions, a PVC foaming plate is easier to form rapidly, so that the problem that the efficiency is low when an existing die isused for forming the PVC foaming plate is solved.

The invention belongs to the technical field of photoelectricity, and particularly relates to a hanging type power cable. The power cable is provided with a central beam tube, a plurality of electricconductors located outside the central beam tube, and an outer sheath located outside the electric conductors. A plurality of sequentially stacked optical fiber ribbons are arranged in the central beam tube, and light transmission components are arranged in the optical fiber ribbons. The hanging type power cable is characterized in that four hanging components are further arranged in the hanging type power cable, each hanging component is composed of a first hanging body, a second hanging body, a third hanging body, a hanging connecting part and a hanging body, and the hanging components are of an integrated structure. The invention further discloses a hanging type optical cable. The power cable and the optical cable have the advantages of being more stable in structure, higher in opticalcommunication density, lower in laying cost, easier to form and replace, better in heat dissipation effect and higher in current-carrying capacity.

The invention discloses a carbon fiber reinforced thermosetting resin-based composite material and a preparation method thereof, and belongs to the technical field of advanced composite materials. The preparation method comprises the following steps: sampling matrix resin, a low-shrinkage agent, a curing agent, a polymerization inhibitor, an internal release agent, a thickening agent and a dispersing aid according to the mass ratio, and conducting stirring and uniform mixing to prepare resin paste; preparing flaky carbon fiber prepreg from the resin paste and the carbon fiber non-woven fabric through a flaky molding compound process; flatly laying and overlaying the sheet-shaped carbon fiber prepreg, and conducting vacuum hot pressing and die assembly molding; and after the vacuum hot pressing die pressing is finished, and conducting cooling and demolding to obtain the carbon fiber reinforced thermosetting resin-based composite material. The preparation method has the characteristics of simple process, short production period, low energy consumption, designable strength and modulus, easiness in large-area forming, capability of meeting the forming requirements of products with complex shapes and structures and the like; and the prepared composite material has the excellent performances of high strength, high modulus, light weight, isotropy and the like.

The invention relates to a high-molecular polymer composite suitable for a bioreactor and a method for manufacturing the high-molecular polymer composite, and belongs to the technical field of biological pharmacy. The composite comprises, by weight, 55-70 parts of polytetrafluoroethylene, 10-15 parts of polyether-ether-ketone, 8-12 parts of polyphenyl ester, 3-5 parts of polyphenyl ether, 3-5 parts of polyethylene, 3-5 parts of polyamide and 3-5 parts of zirconia or silicon nitride. The high-molecular polymer composite and the method have the advantages that problems that parts of existing composites in the prior art are toxic, the existing composites are volatile, are easy to decompose, are poor in temperature resistance and corrosion resistance and are not suitable for bioreactors, or the existing compositions are only suitable for membrane bioreactors and are poor in abrasion resistance are solved; all requirements on the performance of the high-molecular polymer composite which is in contact with biological products in the bioreactor are met, the high-molecular polymer composite has self-lubricating performance, and the abrasion resistance of the high-molecular polymer composite is greatly improved.

This invention relates to a degradation composite material of polylactide / carbon dioxide polymer, composed of 10 to 90 shares(weight) of carbon dioxide polymer, 10 ~ 90 shares of polylactic acid, 10 ~ 20 shares of acetyl Tributyl Citrate plasticizer, 1 ~ 5 of maleic anhydride end blocking agent. This invention has good mechanical properties, degradation, good thermal stability, easy processing and prototyping, good glossiness and transparency, which can apply to the production of medical dressings, packaging materials and others.

The present application relates to a dispense interface (500, 600, 700) comprising at least a first flat part (502, 602) tightly connected with a second flat part (504, 604), wherein at least one of the at least two flat parts (502, 504, 602, 604) comprises at least one deepening (508, 510, 512, 513, 608', 608'', 610', 610'', 612', 612'', 613', 613'') configured for forming at least one part of a channel profile (506, 606), wherein the at least one deepening (508, 510, 512, 513, 608', 608'', 610', 610'', 612', 612'', 613', 613'') is formed by embossing, wherein the channel profile (506, 606) comprises at least a first inlet channel (508, 608) and a second inlet channel (510, 610) and at least one outlet channel (512, 612), wherein each of the at least two inlet channels (508, 510, 608, 610) is configured for fluid communication with a respective reservoir (90, 100, 708, 710) of at least two reservoirs (90, 100, 708, 710).

The invention discloses a composite sandwich structure and a making method thereof. By setting a multi-layer structure consisting of a surface layer, a first shielding layer, a first structural layer,a sandwich layer, a second structural layer and a second shielding layer, the composite sandwich structure can adapt ship housing manufacturing, and also can meet the requirements of corrosion resistance, light weight, easy shaping and impact resistance for ship housings at the same time.

The invention provides a quickly-formed rubber strip production method and device, in particular a rubber strip production method and a rubber strip production device. The quickly-formed rubber stripproduction method comprises the steps of mixing, rubber extrusion, cooling and cutting. The quickly-formed rubber strip production device comprises an internal mixer, a rubber extrusion device and a cutting machine, wherein the internal mixer is adjacent to the rubber extrusion device; and a discharging port of the rubber extrusion device is connected with the cutting machine. The quickly-formed rubber strip production method and device provided by the invention have the main characteristics that by the adoption of hot-extrusion forming and longitudinal cutting methods, the error is smaller than that generated in a conventional process, the forming is quicker, and the efficiency is higher.

The invention relates to a method and a device for producing a screw connection point (1) on the periphery (34) of a hollow section (7), that is expanded by a high-pressure fluid. An attachment (17, 31) comprising a bore (18) with an inner thread is mounted on the hollow section (7) in the hydroforming mould (2) and a hole is then made in the hollow section (7) in alignment with the bore (18). The aim of the invention is to produce a durable screw connection point (1) on the periphery (34) of a hollow section (7) in a simple and reliable process. To achieve this, the attachment (17, 31) is advanced towards the hollow section (7) with the aid of an electrode (11, 30) that is integrated into the hydroforming mould (2). The attachment (17, 31) is resistance welded to the hollow section (7) by means of the electrode (11, 30), once said attachment has been placed on the mould relief (5) in the vicinity of the screw connection point (1) to be created.

The invention discloses amacromolecular polymer colored clay and a preparation method thereof, and relates to the technical field of colored clay. The macromolecular polymer colored clay is prepared from the following components in percentage by weight: 1 to 35 percent of a macromolecular dihydric alcohol, 15 to 50 percent of diisocyanate, 1.5 to 15 percent of a chain extender, 0.1 to 2 percent ofa colored micromolecular dihydric alcohol, 0.1 to 5 percent of a cross-linking agent, 0.1 to 1 percent of a wetting agent and 1 to 20 percent of water. The macromolecular polymer colored clay prepared by the invention belongs to a high polymer material, and has the properties of safety, no toxicity, high ductility, high elasticity, low viscosity and the like. Meanwhile, the micromolecular structures are grafted to the polymer, so that the macromolecular polymer colored clay has the characteristics of rich colors, good permeability and the like. As the wetting agent is added into the macromolecular polymer colored clay, the water retention effect is good, and the macromolecular polymer colored clay can be repeatedly used.

The invention discloses a preparation method of a polyester fiber fire retardant. The preparation method comprises the following steps: adding tri(phosphine oxide) and a UV stabilizing agent into tetraphenyl diphosphonate, carrying out reactions for a while to prepare an intermediate; adding the intermediate into a stirring machine, stirring the intermediate at a constant speed and a certain temperature for a while, when the ratio of tri(phosphine oxide): tetraphenyl diphosphonate: the UV stabilizing agent of the intermediate reaches 4.5:1:0.05, stopping stirring; adding a certain amount of catalyst into the heated and stirred intermediate, stirring at a constant speed and a certain temperature for a while; adjusting the temperature to 160 to 180 DEG C, adding a certain amount of phenol and catalyst, carrying out reactions for a while; adding a certain amount of tricyanurate into the formed solution; controlling a certain reaction temperature to make the formed solution carry out end capping reactions to prepare the polyester fiber fire retardant. The fire retardant has the advantages of simple structure and practicality.