Polyurethane heat-insulation structural adhesive and manufacturing method for heat-insulation aluminum profile

Abstract

The invention discloses a polyurethane heat-insulation structural adhesive, which comprises components A and B, wherein the mass ratio of A to B is (90-110):(70-90); the component A comprises polyether polyol and auxiliaries; on the basis of the mass ratio of the auxiliaries to the polyether polyol, the auxiliaries comprise following components by weight percent: 0.1-0.3% of catalyst, 0.1-0.5% offlatting agent, 0.1-0.5% of de-foaming agent, 0.5-1.5% of chain extender, 0.1-5% of padding, 0.3-5% of plasticizer, 0.1-0.3% of anti-oxygen, and 0.1-0.3% of ultraviolet absorber; and the component B is isocyanate of MDI (methyl diphenylene diisocyanate) or TDI (toluene di-isocyanate). The invention also discloses a method for using the structural adhesive to prepare a heat-insulation aluminum profile. The polyurethane heat-insulation structural adhesive provided by the invention has advantages of excellent mechanical property, fatigue resistance, shock resistance, wear-resisting property, andstability. Room-temperature pouring and room-temperature solidifying processes are realized through the molding production; the pouring period is long; the molding production is not limited by temperature and the shape of aluminum profile; the operation is easily controlled; the rejection rate is low; and the molding production is beneficial to the popularization and application of the pouring type heat-insulation aluminum profile technique.

Description

technical field [0001] The invention relates to the technical field of building aluminum alloy profiles for aluminum alloy doors, windows and curtain walls, in particular to a polyurethane heat-insulating structural adhesive and a method for manufacturing the heat-insulating aluminum profiles. Background technique [0002] The issue of energy conservation and environmental protection has received more and more attention and attention in the world, and has occupied a vital position in social development. As people's awareness of environmental protection and energy saving continues to increase, many advanced energy-saving products and energy-saving processes have been gradually applied to various fields such as the construction industry. [0003] At present, there are mainly two types of heat-insulating aluminum alloy doors and windows for broken bridges and broken bridge heat-insulated aluminum profiles for curtain walls: "strip type" and "casting type". The strip-type heat-...

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Problems solved by technology

However, the prior art cast-type heat-insulating aluminum profiles are limited by materials and other factors, and the mechanical properties of the product are not ideal. Moreover, the construction in the molding production process is relatively complicated, and it is greatly affected by temperature. The temperature range is narrow and needs to be controlled at 25 Casting at a temperature of ±2°C, and the casting period is short, and the operation and control are difficult, so it is limited to the casting production of straight aluminum profiles, and it is difficult to obtain cast aluminum profiles of other shapes, which affects the promotion of cast heat insulation technology and use

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