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Polyurethane sealing strip and preparation method thereof
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A sealing strip and polyurethane technology, which is applied in the field of polyurethane products, can solve problems such as not easy to open, poor mechanical properties, wear resistance and high pressure resistance, and achieve high production efficiency, good toughness and simple processing technology.
Inactive Publication Date: 2016-03-02
ZIBO ZHENGDA ENERGY SAVING NEW MATERIAL
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Abstract
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Problems solved by technology
[0002] The sealing strip is a product that seals something so that it is not easy to open, and has the functions of shock absorption, waterproof, sound insulation, heat insulation, dustproof, and fixation. Most of the sealing strips on the market are made of rubber. Poor performance, wear resistance and high pressure resistance
Method used
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Embodiment 1
[0025] The polyurethane sealing strip is composed of component A and component B, in parts by weight, and the raw materials are as follows:
[0026] A component:
[0027]
[0028] B component:
[0029] 100LL27.5kg.
[0030] Its preparation method is as follows:
[0031] Add the raw materials of component A into the mixer, adjust the constant material temperature to 25°C, adjust the speed of the stirrer to 4250r / min and mix them evenly; pour component B, which has been preheated to 25°C, into component A and stir for 12.5s , Pour the mixed material into a mold preheated to 40°C, and demould after 7.5 minutes to obtain the product.
[0036] The polyurethane sealing strip is composed of component A and component B, in parts by weight, and the raw materials are as follows:
[0037] A component:
[0038]
[0039] B component:
[0040] 100LL20kg.
[0041] Its preparation method is as follows:
[0042] Add the raw materials of component A into the mixer, adjust the constant material temperature to 23°C, adjust the speed of the stirrer to 4000r / min to mix them evenly; pour component B preheated to 23°C into component A and stir for 10s, Pour the mixed material into a mold preheated to 35°C, and demould after 5 minutes to obtain the product.
[0047] The polyurethane sealing strip is composed of component A and component B, in parts by weight, and the raw materials are as follows:
[0048] A component:
[0049]
[0050] B component:
[0051] 100LL35kg.
[0052] Its preparation method is as follows:
[0053] Add the raw materials of component A into the mixer, adjust the constant material temperature to 27°C, and adjust the speed of the mixer to 4500r / min to mix them evenly; pour component B, which has been preheated to 27°C, into component A and stir for 15 seconds, Pour the mixed material into a mold preheated to 45°C, and demould after 10 minutes to obtain the product.
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Abstract
The invention belongs to the technical field of polyurethane products, and in particular to a polyurethane sealing strip and a preparation method thereof. The polyurethane sealing strip is composed of a group A and a group B, by weight. The group A comprises 30-50 portions of polyether polyol DEP-330N, 20-50 portions of polyether polyol DED-28, 10-20 portions of polyether polyol POP-36 / 28, 0.1-0.6 portion of water, 0.5-0.9 portion of a foam stabilizer, 0.35-0.50 portion of an amine catalyst, 1-3 portions of a crosslinking agent, and 1-2 portions of a color paste; and the group B comprises 20-35 portions of a modified black material. The synergistic effect of the group A and group B endows the prepared polyurethane sealing strip with good toughness, impact resistance, abrasion resistance, weather resistance, hydrolysis resistance and oil resistance; and the preparation method is simple in processing technology, and high in production efficiency.
Description
technical field [0001] The invention belongs to the technical field of polyurethane products, and in particular relates to a polyurethane sealing strip and a preparation method thereof. Background technique [0002] The sealing strip is a product that seals something so that it is not easy to open, and has the functions of shock absorption, waterproof, sound insulation, heat insulation, dustproof, and fixation. Most of the sealing strips on the market are made of rubber. Poor performance, wear resistance and high pressure resistance. [0003] Polyurethane elastic material has good mechanical properties, wear resistance and high pressure resistance, and its aging resistance, ozone resistance and oil resistance are also quite good. How to prepare polyurethane sealing strips has become an urgent technical problem in this field. Contents of the invention [0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a polyurethane se...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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