56results about How to "To achieve the purpose of thickening" patented technology

The invention provides a vertical type single-component polyurethane waterproof coating. The coating is prepared from the following components in parts by weight: 15-25 parts of polyether trihydric alcohol, 3-5 parts of toluene di-isocyanate, and 0.3-1.0 part of amine curing agent. The invention also provides a method for preparing the waterproof coating. The waterproof coating has the advantages of high strength, high extension, high adhesion property, no benzene or coal tar, safety, environment protection and the like, can be coated on the vertical surface with the thickness of 0.5-1.0mm each time, has no flowing and dropping, and only needs to coat 2-3 times for the vertical surface to reach the thickness of 2mm.

The invention relates to thickening powder for dry-mixed mortar and a preparation method of the thickening powder. The invention relates to the technical field of dry-mixed mortar. The thickening powder particularly includes the following components: 20-30 kg / t of cellulose, 30-45 kg / t of redispersible latex powder, 380-430 kg / t of bentonite, 80-100 kg / t of sodium lignosulphonate and 60-80 kg / t ofcalcium lignosulphonate. The thickening powder also comprises 50 to 70 kg / t of hydroxymethyl starch, 5 to 10 kg / t of polyvinyl alcohol, and 10 to 15 kg / t of polyacrylamide. The thickening powder prepared by the invention is added into the dry-mixed mortar, so that the consistency of the mortar can be ensured, and the binding power between the mortar and a wall body can be improved.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description, a constitutional unit B shown as formula (II) in the description and a constitutional unit C shown as formula (III) in the description; by takingthe total weight of the acrylamide copolymer as the baseline, the constitutional unit A accounts for 70wt%-90wt%, the constitutional unit B accounts for 8wt%-28wt% and the constitutional unit C accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.

The invention discloses a processing method of a locally electroplated thick gold product, which is combined with an existing process wire thick gold electroplating process, a local gold electroplating area imaging process is added after a microwave printed board is electroplated with gold for the first time, secondary gold electroplating is carried out on a local area on the basis, finally, a surface coating is removed, and a process wire is removed by etching. Compared with the prior art, the high-frequency microwave printed board processing technology method for locally electroplating thickgold can be suitable for processing high-frequency microwave printed board products with inconsistent gold plating layer thicknesses in patterns, an electroplating area is limited mainly through a special means, and secondary gold plating is carried out in combination with a wire electroplating mode, so that the purpose of thickening a local gold plating layer is achieved.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description, a constitutional unit B shown as formula (II) in the description and a constitutional unit C shown as formula (III) in the description; by takingthe total weight of the acrylamide copolymer as the baseline, the constitutional unit A accounts for 70wt%-90wt%, the constitutional unit B accounts for 8wt%-28wt% and the constitutional unit C accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.

The instant flavor solid soup material is prepared with vegetable, meat, edible mushroom and other material, and through sorting, washing, cutting, color keeping, cooking, thickening, tray loading, freezing, vacuum freezing to dry, and packing. The instant flavor solid soup material has water re-combining speed, good dispersivity, high viscosity after being mixed with boiling water and other features. It may be in different local flavors.

The invention provides a method for preparing a magnesium nitrate solution by using nitric acid tail gas, which comprises the following steps: respectively injecting nitric acid tail gas after being washed by a washing tower and water on magnesium oxide surface to form a solution; uniformly introducing compressed air and then stirring to generate the magnesium nitrate solution; filtering the magnesium nitrate solution and then introducing in the washing tower and repeatedly generating the magnesium nitrate solution to increase its concentration; deposing for 8-10 hours, and filtering to obtain the finished product magnesium nitrate solution. The invention also provides an apparatus. According to the invention, a non-pressure process and a pressurization method are used for producing dilute nitric acid, tail gas generated by dilute nitric acid contains a lot of nitrogen oxides such as NO and NO2, the nitrogen oxides are washed by the washing tower to remove the impurities, and then added in magnesium oxide with water and compressed air, so that nitrogen oxides, water, and alkalescence suspending liquid prepared by oxygen and magnesium oxide are reacted to directly generate the magnesium nitrate solution. According to the invention, reaction is mild, acid mist and nitrogen oxides are not generated, so that personal safety is ensured and environment can not be polluted, and magnesium nitrate concentration can be gradually increased to 40%.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description, a constitutional unit B shown as formula (II) in the description and a constitutional unit C shown as formula (III) in the description; by takingthe total weight of the acrylamide copolymer as the baseline, the constitutional unit A accounts for 70wt%-90wt%, the constitutional unit B accounts for 8wt%-28wt% and the constitutional unit C accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a structure unit A shown in the formula I, a structure unit B shown in the formula II and a structure unit C shown in the formula III; on the basis of the total weight of the acrylamide copolymer, the content of the structure unit A is 43.5wt%-98wt%, the content of the structure unit B is 0.6wt%-39wt%, and the content of the structure unit C is 0.6wt%-39wt%. The acrylamide copolymer has good water solubility and a thermothickening function and is applicable to three-time oil recovery of a high-temperature and high-salinity reservoir as a thermothickening agent.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a structure unit A shown in the formula I, a structure unit B shown in the formula II and a structure unit C shown in the formula III; on the basis of the total weight of the acrylamide copolymer, the content of the structure unit A is 43.5wt%-98wt%, the content of the structure unit B is 0.6wt%-39wt%, and the content of the structure unit C is 0.6wt%-39wt%. The acrylamide copolymer has good water solubility and a thermothickening function and is applicable to three-time oil recovery of a high-temperature and high-salinity reservoir as a thermothickening agent.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description and a constitutional unit B shown as formula (II) in the description; by taking the total weight of the acrylamide copolymer as the baseline, theconstitutional unit A accounts for 95wt%-99.9wt%, and the constitutional unit B accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description, a constitutional unit B shown as formula (II) in the description and a constitutional unit C shown as formula (III) in the description; by takingthe total weight of the acrylamide copolymer as the baseline, the constitutional unit A accounts for 70wt%-90wt%, the constitutional unit B accounts for 8wt%-28wt% and the constitutional unit C accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a structure unit A shown in the formula I, a structure unit B shown in the formula II and a structure unit C shown in the formula III; on the basis of the total weight of the acrylamide copolymer, the content of the structure unit A is 43.5wt%-98wt%, the content of the structure unit B is 0.6wt%-39wt%, and the content of the structure unit C is 0.6wt%-39wt%. The acrylamide copolymer has good water solubility and a thermothickening function and is applicable to three-time oil recovery of a high-temperature and high-salinity reservoir as a thermothickening agent.

The invention discloses a knife back forming machine, which comprises an upper die, a lower die, a fixed side die, a movable side die, a main hydraulic device and an auxiliary hydraulic device, wherein the main hydraulic device and the auxiliary hydraulic device are fixed on a base; the upper die is fixed on a plunger end of the main hydraulic device; the bottom shape of the upper die is adaptive to the shape required by the top of the knife back; the lower die is fixed on the base; a knife edge slot used for fixing a knife is arranged above the lower die; the fixed side die is fixed on the base; the movable side die is fixed on a plunger end of the auxiliary hydraulic device; and the combined shape of the opposite surfaces of the fixed side die and the movable side die is adaptive to the required shaped by the cross section of the knife. According to the knife back forming machine disclosed by the invention, a purpose of thickening the knife back can be realized, and the knife back forming machine is regular and beautiful in forming. When the knife back forming machine disclosed by the invention is adopted, the knife back of the knife can be processed within 10 seconds, no coal needs to be fired, the energy is saved, the environment is protected, the production efficiency is improved, the labor intensity is lowered, and the production cost is lowered.

The invention relates to a manufacture method for a fork of a forklift. The manufacture method comprises the following steps of: selecting a rectangular or quadrate long strip-shaped steel with the same cross section as that of the fork to be processed; cutting the long strip-shaped steel in length according to a technical requirement, and cutting to obtain various inclined faces as required; partially heating the cut proximate matters at bending parts; partially upsetting and forming in dies, and bending a convex face at an upsetting part as an internal surface to form a fork shape by utilizing afterheat; extruding a protuberance inside a bending angle of the fork to the outside of the bending angle through a punching die so as to form a thickened external surface of a fork bottom; cutting two ends of the fork as required; and then carrying out processing programs.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description, a constitutional unit B shown as formula (II) in the description and a constitutional unit C shown as formula (III) in the description; by takingthe total weight of the acrylamide copolymer as the baseline, the constitutional unit A accounts for 70wt%-90wt%, the constitutional unit B accounts for 8wt%-28wt% and the constitutional unit C accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.

The invention relates to the field of oil field chemicals and discloses an acrylamide copolymer as well as a preparation method and an application thereof. The acrylamide copolymer contains a constitutional unit A shown as formula (I) in the description, a constitutional unit B shown as formula (II) in the description and a constitutional unit C shown as formula (III) in the description; by takingthe total weight of the acrylamide copolymer as the baseline, the constitutional unit A accounts for 70wt%-90wt%, the constitutional unit B accounts for 8wt%-28wt% and the constitutional unit C accounts for 0.1wt%-5wt%. The acrylamide copolymer can be used as a hot thickener for tertiary oil recovery of high-temperature and high-salinity reservoirs.