摘要:
The invention relates to an expansion valve and a method for controlling an expansion valve, in which the opening and closing movement of the valve-closing element is adjusted as a function of the pressure difference which is present on the high-pressure side in an inlet opening and on the low-pressure side in an outlet opening.
摘要:
The invention relates to an expansion valve and to a method for controlling an expansion valve, in which the opening and closing movement of the valve-closure member is set as a function of the pressure difference which is present in a feed opening on the high pressure side and in a discharge opening.
摘要:
The present invention relates to a grafted copolymer bearing grafts of formula (I): —O—PM1—(PM2)—T (I) in which: PM1 represents a polymer block obtained by (co)polymerization of at least one monomer M1 via a radical route; and PM2, which is optionally present, represents a polymer block obtained by (co)polymerization of at least one monomer M2 via a radical route; and T represents the residue of a stable radical T•.
摘要:
Process for the treatment of ground polyolefin material originating from scrap dairy product containers with at least one agent chosen from hydrogen peroxide, steam and sodium hydroxide in a quantity which is effective for deodorizing the polyolefin. Ground material obtained by this process and exhibiting an imperceptible level of residual odour of aged milk. Use of the deodorized ground material obtained by this process for the production of shaped objects.
摘要:
The compositions contain, as heat stabilizer, an effective amount of bismuth carboxylate chosen from bismuth succinate, acrylate and terephthalate and their mixtures. In general, this amount is at least 0.05 part and does not exceed 5 parts per 100 parts by weight of vinylidene fluoride polymer. The heat stabilizers according to the invention are suitable both for the thermal stabilization of virgin polymers and for the stabilization/decoloration of thermally degraded waste polymers.
摘要:
The invention relates to a method for controlling an expansion valve, in particular for vehicle air-conditioning systems operated with CO2 as the refrigerant, with a valve housing which has a feed opening and a removal opening, with a valve-closing member which closes a valve seat of a passage opening arranged between the feed and removal openings, and with a resetting device which acts in the closing direction of the valve-closing member, an adjusting element, which is assigned to the valve-closing member, on the low-pressure side being activated via a predetermined threshold value as the low pressure rises or as the temperature on the low-pressure side rises and actuates at least one actuating element by means of which a closing force of the resetting device acting on the valve-closing member is reduced such that a passage opening is enlarged or a passage of a bypass valve arranged on the low-pressure side, which passage is arranged parallel to the passage opening, is opened.
摘要:
The compositions contain, as heat stabilizer, an effective amount of bismuth carboxylate chosen from bismuth succinate, acrylate and terephthalate and their mixtures. In general, this amount is at least 0.05 part and does not exceed 5 parts per 100 parts by weight of vinylidene fluoride polymer. The heat stabilizers according to the invention are suitable both for the thermal stabilization of virgin polymers and for the stabilization/decoloration of thermally degraded waste polymers.
摘要:
The invention relates to an expansion valve and to a method for controlling an expansion valve, in which the opening and closing movement of the valve-closure member is set as a function of the pressure difference which is present in a feed opening on the high pressure side and in a discharge opening.
摘要:
The invention relates to an expansion valve and a method for controlling an expansion valve, in which the opening and closing movement of the valve-closing element is adjusted as a function of the pressure difference which is present on the high-pressure side in an inlet opening and on the low-pressure side in an outlet opening.
摘要:
The invention relates to a method of producing a valve arrangement and to a valve arrangement for an expansion valve, which is provided in a vehicle air conditioning system operated with refrigerant and has a basic opening in the valve seat, the cross section of this basic opening being produced for a predetermined mass flow by material removal.