33results about How to "Reduce volume shrinkage" patented technology

The invention provides a preparation method of a cationic ultraviolet light and heat dual deep curing adhesive and relates to a preparation method of a curing adhesive. The method aims at solving the problems that an existing ultraviolet light curing adhesive cannot be rapidly cured deeply, and after ultraviolet light irradiation is used, following heating is still needed. The cationic ultraviolet light and heat dual deep curing adhesive is prepared from, by weight, 60-100 parts of oligomeric resin mixture, 5-30 parts of diluent, 5-15 parts of coupler, 0.75-3 parts of photoinitiator, 075-3 parts of photosensitizer, 0.075-0.5 part of thermal initiator and 0-0.2 part of heat stabilizer. The method includes the steps of 1, weighing; 2, mixing. The cationic ultraviolet light and heat dual deep curing adhesive is obtained. The cationic ultraviolet light and heat dual deep curing adhesive and the preparation method thereof can be obtained.

An organic-inorganic composite filler contains: inorganic aggregate particles formed by aggregation of inorganic primary particles with an average particle diameter of 10 to 1000 nm; an organic resin phase including a cured polymer of a polymerizable monomer covering surfaces of the inorganic primary particles and bonding the inorganic primary particles to each other, and a water absorbing resin; and aggregation gaps with a volume of micropores formed between parts of the organic resin phase of 0.01 to 0.30 cm3 / g in pore volume measurement within a pore diameter range of 1 to 500 nm, as measured by a mercury intrusion technique. In a cross section passing through the centers of the inorganic aggregate particles, based on 100 measured inorganic particles, there are 10 or less inorganic aggregate particles having a macro void with a maximum width of at least 1 μm.

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

The production method for an optical fiber connector includes the steps of: injecting and hardening a first resin (26) into a resin-injection portion (29) of a connector body (22), the first resin (26) being a light hardening resin or a heat hardening resin; forming a pre-lens by further injecting a second resin (27) on the hardened first resin (26), the second resin (27) being the light hardening resin or the heat hardening resin; and forming a lens by hardening the second resin (27). In this way, it is possible to provide a production method for an optical lens by which influences by volume shrinkage of a resin are decreased, a lens surface can be formed with high accuracy and the product can be made with high quality.

The invention discloses a high-strength heat-resistant shock-resistant push plate. The raw materials include the following components by weight: 20-30 parts of 3-0.5mm mullite particles, 15-20 parts of 1-0.5mm corundum particles, 0.5-0.1 mm quartz particles 10‑15 parts, 320 mesh andalusite fine powder 15‑20 parts, 220 mesh mullite fine powder 25‑30 parts, 2μm alumina fine powder 8‑12 parts, 320 mesh corundum fine powder 5‑10 parts, Silica powder 5‑15 parts, zircon 5‑10 parts, cerium oxide 0.5‑2 parts, aluminum fluoride 2‑10 parts, aluminum 5‑10 parts, silicon 10‑15 parts, white clay 10‑15 parts, plus 1‑3 parts of binder. The invention also discloses a preparation method of the high-strength heat-shock-resistant push plate. The product of the invention has good thermal shock resistance, high mechanical strength, simple preparation method and convenient practical operation.

The invention discloses a volume control device for improving the processability of microwave expansion tobacco stems, aiming at providing the volume control device for improving the processability of the microwave expansion tobacco stems, which is simple in structure. The device comprises a barrel, a bracket, a rotating shaft, a helical blade, a steam jacket, a drain valve, a heat preservation layer, a compressed air pipeline and a plurality of compressed air nozzles, wherein a feeding opening is formed in one end of the barrel, a discharging opening is formed in the other end of the barrel, the bracket is used for supporting the barrel, the rotating shaft is rotatably arranged in the barrel, the helical blade is fixedly arranged on the rotating shaft, the steam jacket sleeves the outer wall of the barrel, the drain valve is arranged on the steam jacket, the heat preservation layer is arranged on the outer wall of the steam jacket, the compressed air pipeline penetrates into the barrel, and the plurality of compressed air nozzles are located in the barrel and communicate with the compressed air pipeline; a feeding cross valve is arranged on the feeding opening of the barrel, a discharging cross valve is arranged on the discharging opening of the barrel, and a pressure gauge and a humidity eliminating hole are arranged on the barrel. With the volume control device, the volume shrinkage degree of the microwave expansion tobacco stems after moisture regaining treatment can be greatly reduced, and thus the subsequent slicing processing is facilitated.

The invention belongs to the technical field of manufacturing of turbine rotor of a pressurizer, in particular to a material for preparing a turbine rotor of the pressurizer and a method for preparing the turbine rotor by the material. The material for preparing the turbine rotor of the pressurizer comprises the components in parts by weight as follows: 85-90 parts of silicon nitride powder, 1-8 parts of boron nitride nanotube powder, 2-4 parts of aluminite powder, 2-4 parts of silicon powder and 3-5 parts of zirconium oxide powder. The method for preparing the turbine rotor by the material comprises the steps of: (1) preparing a raw material; (2) preparing a paste material; (3) injection moulding; (4) setting and drying; and (5) gas pressure sintering of mould constraint. The turbine rotor of the pressurizer prepared by the material is light in weight, good in toughness, high in strength, low in specific gravity and good in proportionality, and small in lag proportionality, small in deformation, small in accumulated carbon and long in service life under supernormal work conditions such as high temperature, high pressure and high speed. Meanwhile, the method for preparing the turbine rotor by the material is simple in steps, convenient to operate and is beneficial for industrialized production in a large scale.

The invention discloses a smokeless scented candle, which belongs to the technical field of candles. The key point of the technical scheme is that it is prepared from the following raw materials in parts by weight: 80-100 parts of coconut wax, 50-80 parts of soybean wax, beeswax 0-30 parts, palm wax 0-15 parts, aromatic essential oil 1-5 parts, nano inorganic filler 1-5 parts, combustion accelerator 1-3 parts, C8-C10 fatty alcohol 1-3 parts. The smokeless aromatherapy candle of the present invention burns completely, produces less harmful substances such as smoke, and has good storage stability. The invention correspondingly discloses a manufacturing process of a smokeless scented candle, including the steps of mixed wax preparation, essential oil pretreatment, mixing, filling and molding. The smokeless scented candle produced has the advantages of low combustion smoke and environmental protection.