49results about How to "Trigger fast" patented technology

The invention discloses a key structure. The key structure comprises key caps, guiding mechanisms arranged on the key caps, actuating parts movably connected with the guiding mechanisms, circuit units, elastic parts and returning units. When a key cap is subjected to pressure, the key cap moves to a low position through a trigger position from a high position downwards. When the key cap moves to the trigger position, the corresponding circuit unit abuts against the corresponding actuating part to generate a trigger signal, and a preset length of the corresponding elastic part is maintained, so that relative motion between the corresponding actuating part and the key cap does not exist. When the key cap moves to the low position from the trigger position, the corresponding actuating part stops moving downwards, and the corresponding elastic part is compressed so as to enable the corresponding actuating part to move relative to the corresponding guiding mechanism. When the pressure is released, the corresponding elastic part and the corresponding returning unit provides elastic force and returning force respectively so as to enable the corresponding actuating part and the key cap to be returned to a position before the key cap is pressed. According to the key structure disclosed by the invention, the trigger signal is generated in a key stroke period so as to improve the trigger speed under the condition without influencing the key stroke, so that a trigger signal transmission path is more direct and quicker.

The invention provides a synthesis method and application of a water soluble chitosan-based flocculant. The method comprises the steps of adding chitosan into acid solution, adding acylated monomer aqueous solution into the acid solution, uniformly stirring and mixing, performing vibration reaction for 1 to 10 h at 5 to 60 DEG C, performing precipitation and purification through ethyl alcohol and acetone, drying, and obtaining N-acylated chitosan; sequentially adding the N-acylated chitosan, deionized water, acrylamide and strong cation functional monomer into a reactor, uniformly stirring, leading nitrogen into homogenous solution to remove oxygen, adding a photoinitiator and a cosolvent, uniformly stirring and mixing, putting the raw materials into an ultraviolet light reaction device to perform polymerization reaction, drying, performing granulation and powder process, and obtaining the water soluble chitosan-based flocculant; the flocculant can be used for the removal treatment of alga in source water. The flocculant is good in solubility property, high in viscosity coefficient and short in synthesis time, does not need temperature reduction control, simplifies the production technology, reduces energy consumption, and reduces the production cost.

The invention discloses a method for preparing organic matter in the technical field of chemical industry, in particular a method for preparing 2,6-dimethyl-2-heptanol. The present invention uses benzylmagnesium chloride or benzylmagnesium bromide as an initiator to prepare methyl Grignard reagent, then carries out Grignard reaction with 2-methyl-2-hepten-6-one, and then catalyzes hydrogenation to synthesize 2 , 6-Dimethyl-2-heptanol. The initiator prepared in the present invention is relatively stable in properties and easy to store. Compared with commonly used initiators, it has the characteristics of fast initiation speed, strong versatility, small dosage, convenient storage, and low toxicity, and is especially suitable for large-scale production. Preparation of Reagent's Reagent. The preparation of the product of the present invention has more safety and higher product yield. The product of the invention can be widely used in the formula of daily chemical essence.

The invention discloses a halogen-containing compound represented by formula I and its use as a ligand for an ethylene oligomerization catalyst composition, wherein Z is a divalent linking group represented by formula II or formula III; the invention also discloses An ethylene oligomerization catalyst composition containing the halogen-containing compound and an ethylene oligomerization method, an ethylene trimerization method and an ethylene tetramerization method using the catalyst composition are disclosed. The fluorine-containing polymer according to the present invention is used as a ligand for the catalyst for ethylene oligomerization, and can effectively improve the catalytic performance of the catalyst system, especially showing significantly improved activity and selectivity in the ethylene oligomerization reaction. The catalyst composition according to the invention has good industrial application prospect and economic value.

The invention relates to electrical protection equipment, particularly to protection equipment for an open-wire wall-mounted socket, and aims to provide the protection equipment which can perform primary short-circuit protection and on-fire protection and cannot be inserted with a child finger carelessly by solving technical problems. For solving the technical problems, the invention provides the protection equipment for the open-wire wall-mounted socket; the protection equipment comprises mounting plates, first nuts, first threaded rods, a protection plate, a first supporting base and the like; wire inlet holes are formed in the left sides of the mounting plates on two sides; the first nuts are mounted in the middle parts of the outer sides of the mounting plates on two sides in a welding way; the first threaded rods are screwed in the corresponding first nuts; and the first threaded rods are screwed in the walls on the left sides of the mounting plates. The protection equipment can perform primary short-circuit protection and on-fire protection and cannot be inserted with a child finger carelessly; and left and right movement of a sliding sleeve can be controlled by adopting a second spring.

The invention discloses a cationic visible light curing composition. The cationic visible light curing composition is prepared from 0.5 to 10 parts by weight of initiator, 0.5 to 30 parts by weight of reactive diluent and 70 to 90 parts by weight of bisphenol A epoxy resin, wherein the initiator comprises a cationic photoinitiator and a sensitizer with a weight ratio of 1 : (0.01 to 1). The cationic visible light curing composition can be cured and molded under the irradiation of visible light, and has the advantages of low requirement on equipment, lower cost, higher safety, smaller environmental pollution, high light sensitivity, and high light curing conversion rate; a curing conversion rate under the low illumination level smaller than 30 mW / cm<2> can reach 50 percent, and the initiator is high in initiation speed and highly efficient; and the cationic visible light curing composition is good in stability, low in toxicity, free from environmental pollution, inexpensive, easy to obtain and low-cost.

The invention discloses a two-component cationic visible-light initiator and application of the two-component cationic visible-light initiator in the photocuring technology. The two-component cationicvisible light initiator comprises diphenyl iodonium hexafluorophosphate and benzothiadiazole structural unit-based organic dye at a weight ratio of 1:(0.02-1), wherein diphenyl iodonium hexafluorophosphate with a CAS No. Of 58109-40-3) is a commercial ultraviolet photoinitiator, and the benzothiadiazole structural unit-based organic dye is adopted as a sensitizer of diphenyl iodonium hexafluorophosphate. The two-component cationic visible-light initiator has a wide absorption spectrum, curing molding of epoxide can be initiated under irradiation of a visible light source, and rapid curing canbe performed under low illumination of less than 30 mW / cm<2>, so that adoption of a traditional UV source with high energy consumption and large radiation is avoided; in addition, the benzothiadiazole structural unit-based organic dye has small synthesis difficulty, few steps and low-cost raw materials.

The invention relates to the technical field of inks, in particular to a novel environment-friendly UV foaming ink and a preparation method thereof. The UV foaming ink of the present invention includes 30-50 parts of ultraviolet light prepolymer, 5-20 parts of active monomer, 5-20 parts of photoinitiator, 5-15 parts of filler, 10-30 parts of color paste and 5- 20 servings. Among them, the photoinitiator of the present invention is composed of photoinitiator TPO, photoinitiator 907 and diaryliodonium salt, and then combined with foaming agent nano calcium carbonate and other components to obtain the new environment-friendly UV foaming ink of the present invention . The UV foaming ink of the present invention can be applied to the packaging and printing of high-grade and exquisite cigarettes, wine, cosmetics, health care products, food, medicines, etc., such as paper and cardboard. It has energy saving and environmental protection, fast curing speed, good adhesion fastness, bright colors, It has the characteristics of clear texture and strong foaming feeling.