Noise reduction and sound absorption drainage pipe and preparation method thereof
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A technology for drainage pipes and sound absorption, applied in the direction of coating, etc., can solve the problems of squeaking, heavy weight of PVC drainage pipes, and deterioration of product toughness.
Pending Publication Date: 2021-11-23
HANGZHOU XINYU PLASTIC
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Problems solved by technology
In China, in order to reduce costs, many manufacturers fill PVC drainage pipes with a large amount of calcium carbonate, which significantly deteriorates the toughness of the product. Due to the high density of calcium carbonate, PVC drainage pipes are heavy and break when dropped Negative image, at the same time, most of the PVC drainage pipes are laid in the expo
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Embodiment 1
[0030] A noise-reducing and sound-absorbing drainage pipe, mainly comprising:
[0031] 50 parts of polyvinyl chloride, 7.5 parts of self-made crosslinking agent, 300 parts of modified polyvinyl chloride composite emulsion, and 0.5 part of plasticizer.
[0032] A noise-reducing and sound-absorbing drainage pipe, the preparation method of the noise-reducing and sound-absorbing drainage pipe is:
[0033] (1) Dry ethyl cellulose to constant weight; add maleic anhydride to the reactor, add N,N-dimethyldiamide, stir evenly, add dried ethyl cellulose, maleic anhydride, The mass ratio of N,N-dimethyldiamide to the dried ethyl cellulose is 3:1:10, mix well, and dry in a blast drying oven at 50°C for 10 hours; then transfer to the reactor, And heated to 60°C in an oil bath under a nitrogen protection atmosphere, and reacted for 5 hours to prepare a self-made crosslinking agent;
[0034] (2) Add potassium persulfate, sodium lauryl sulfate and deionized water to the water-based polyuret...
Embodiment 2
[0040] A noise-reducing and sound-absorbing drainage pipe, mainly comprising:
[0041] 100 parts of polyvinyl chloride, 30 parts of self-made crosslinking agent, 500 parts of modified polyvinyl chloride composite emulsion, and 5 parts of plasticizer.
[0042] A noise-reducing and sound-absorbing drainage pipe, the preparation method of the noise-reducing and sound-absorbing drainage pipe is:
[0043] (1) Dry ethyl cellulose to constant weight; add maleic anhydride to the reactor, add N,N-dimethyldiamide, stir evenly, add dried ethyl cellulose, maleic anhydride, The mass ratio of N,N-dimethyldiamide to the dried ethyl cellulose is 3:1:15, mix thoroughly, and dry in a blast drying oven at 50°C for 10 hours; then transfer to the reactor, And heated to 60°C in an oil bath under a nitrogen protection atmosphere, and reacted for 5 hours to prepare a self-made crosslinking agent;
[0044] (2) Add potassium persulfate, sodium lauryl sulfate and deionized water to the water-based pol...
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Abstract
The invention discloses a noise reduction and sound absorption drainage pipe and a preparation method thereof, and relates to the technical field of new materials. When the noise reduction and sound absorption drainage pipe is prepared, a self-made cross-linking agent is added into polyvinyl chloride, and cross-linking is carried out under the closed condition of ultraviolet irradiation; a homemade cross-linking agent is maleic anhydride modified ethyl cellulose, and the homemade cross-linking agent and a polyvinyl chloride cross-linking network jointly enhance the heat resistance of polyvinyl chloride; crosslinking is carried out under the closed condition of ultraviolet irradiation, so that the crosslinking density of polyvinyl chloride is increased, and the drainage pipe has sound absorption performance; and the cross-linked polyvinyl chloride is extruded into a pipe to obtain a drainage pipe base body, the drainage pipe base body is soaked in the modified polyvinyl chloride composite emulsion, then a layer of hydrophilic film is continuously formed on the inner wall and the outer wall of the drainage pipe under ultraviolet irradiation, and the hydrophilic film on the inner side reduces deposition of oil stains on the surface of the drainage pipe. The noise reduction and sound absorption drainage pipe prepared by the invention has noise-reducing and sound-absorbing properties, the heat resistance is enhanced, and deposition of oil stains on the surface of the drainage pipe can be reduced.
Description
technical field [0001] The invention relates to the field of new materials, in particular to a noise-reducing and sound-absorbing drainage pipe and a preparation method thereof. Background technique [0002] Polyvinyl chloride is a low-cost and widely used general-purpose plastic, and it is more and more used in the fields of construction, water supply and drainage. In China, in order to reduce costs, many manufacturers fill PVC drainage pipes with a large amount of calcium carbonate, which significantly deteriorates the toughness of the product. Due to the high density of calcium carbonate, the weight of PVC drainage pipes is heavy, and it almost becomes a PVC drainage pipe. Negative image, at the same time, most of the PVC drainage pipes are laid in the exposed way, the sound insulation performance is poor, when there is water flowing in the pipe, there will be a rushing water flow sound, especially at night, the sound is more obvious, the noise problem is more prominent, ...
Claims
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Application Information
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