Preparation method and application of spraying polyurethane semi-rigid foam

A technology of spraying polyurethane and semi-rigid foam, which is applied in the fields of sound insulation, heat preservation and sound absorption of buildings. It can solve the problems of high thermal conductivity of insulation/sound-absorbing pads, time-consuming, poor heat preservation effect, etc., and achieve good sound insulation performance of floor impact sound , saving construction and handling costs, low water absorption effect

CN106519167AInactive Publication Date: 2017-03-22江苏久久节能科技工程有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-03-22
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention provides a preparation method and application of spraying polyurethane semi-rigid foam, and relates to the technical field of construction, in particular to sound isolation, sound absorbing and heat preservation technologies for buildings. After isocyanate and modified polyether polyol are mixed, the polyurethane semi-rigid foam is prepared through foaming and polymerization reactions by means of a high-pressure spraying machine. The spraying polyurethane semi-rigid foam prepared through the technology has the advantages of being low in heat transfer coefficient, good in sound isolation effect, low in water absorbing rate, good in elasticity and ductility and the like after forming, and can be used in the floor building and construction processes and wall building and construction processes.
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Description

technical field

[0001] The invention relates to the technical field of buildings, in particular to the sound insulation, sound absorption and heat preservation technologies of buildings. Background technique

[0002] According to the "Green Building Evaluation Standard" GB50378 and "Jiangsu Green Building Design Standard" DGJ32 / J173, the acceptance of indoor environment is clearly regulated in relevant chapters. Humidity, indoor noise level, air sound insulation performance of floors and partition walls, etc. According to the "Green Home Sound Insulation Design Code" GB50118 Appendix DGJ32 / TJ194 and the "Civil Building Sound Insulation Design Code" GB50118 Appendix A, the indoor noise level is tested in the room, and the selection distance is from water pumps, air-conditioning units, elevators, outdoor main roads and other noises The test of airborne sound insulation performance of the nearest room and household wall (between rooms) is carried out in accordance with GB / T198...

Examples

Embodiment Construction

[0028] 1. Preparation of polyurethane semi-rigid foam:

[0029] 1. First mix 50kg of polyether, 30kg of blowing agent, 1.5kg of catalyst, 1.5kg of stabilizer, 15kg of flame retardant and 2kg of modifier to obtain 100kg of modified polyether polyol.

[0030] Then, 100-110 kg of isocyanate and 100 kg of modified polyether polyol are mixed by a high-pressure foaming machine, and then foamed to obtain semi-rigid polyurethane foam.

[0031] 2. Application:

[0032] 1. Floor construction:

[0033] Clean up the surface of the floor slab in the prefabricated building to keep it clean and dry.

[0034] Spray polyurethane semi-rigid foam on the floor, and after the polyurethane semi-rigid foam solidifies to form a polyurethane semi-rigid foam layer with a thickness of 1-5cm, then make a cement mortar layer with a thickness of 4±1cm on the polyurethane semi-rigid foam layer.

[0035] Note: The height of the polyurethane semi-rigid foam layer at the corner is 4±1cm.

[0036] When maki...