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Silicon PU and preparation method thereof

A technology of polyether and weight ratio, which is applied in the field of silicon PU and its preparation, can solve the problems of prolonging the construction period, poor ball resilience, shortening service life, etc., and achieve the effect of shortening construction time and increasing elongation at break

Inactive Publication Date: 2020-01-03
山东固丰体育产业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water cannot be added to the existing formula, and the thickness of one scrape coating cannot exceed 1.5MM, because adding water will cause more air bubbles, which will increase the impact absorption, make the ball's resilience worse, reduce the elongation at break, and follow the foundation settlement Expansion joints are deformed and cracked, which greatly shortens the service life and reduces the convenience of construction. Because it is easy to foam, it is necessary to cut off the foamed part and re-do it to prolong the construction period.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Put 230 kg of polyether 2000, 265 kg of polyether 330, and 395 kg of chloromethyl ester into the reactor, stir, and raise the temperature at the same time. After the temperature rises to 90°C, add 25 kg of magnesium oxide, 2.8 kg of antioxidant 1076, and 3.2 kg of Light stabilizer 328, 2.8 kg of light stabilizer 770, 5.8 kg of iron oxide green, 930 kg of 800-mesh talcum powder, and then continue to heat up to 115 ° C, heat preservation, vacuum dehydration for 130 minutes, the vacuum degree should be above -0.095 MPa, after dehydration Cool down, drop the temperature below 90°C, add 68 kg of TDI-80 and keep it warm at 80°C for 135 minutes, after the end of the heat preservation, cool down again, drop the temperature below 70°C, add 73 kg of dimethyl carbonate, 1.8 kg of BUK054 defoamer and 0.8 kg of organic Tin catalyst, stirred for 33 minutes, and discharged.

Embodiment 2

[0042] Put 235 kg of polyether 2000, 270 kg of polyether 330, and 405 kg of chloromethyl ester into the reactor, stir, and raise the temperature at the same time. After the temperature rises to 90°C, add 29 kg of magnesium oxide, 3.2 kg of antioxidant 1076, and 2.8 kg of Light stabilizer 328, 3.2 kg of light stabilizer 770, 6.2 kg of iron oxide green, 935 kg of 800-mesh talcum powder, then continue to heat up to 125 ° C, keep warm, and vacuum dehydrate for 150 minutes. The vacuum degree should be above -0.095 MPa. After dehydration Cool down, drop the temperature below 90°C, add 72 kg of TDI-80 and keep it warm at 90°C for 150 minutes, then cool down again after the heat preservation is over, add 73.5 kg of dimethyl carbonate, 2.2 kg of BUK054 defoamer and 1.2 kg of organic Tin catalyst, stirring for 40 minutes, discharging.

Embodiment 3

[0044] Put 233 kg of polyether 2000, 267 kg of polyether 330, and 400 kg of chloromethyl ester into the reactor, stir, and raise the temperature at the same time. After the temperature rises to 90°C, add 27 kg of magnesium oxide, 3 kg of antioxidant 1076, and 3 kg of Light stabilizer 328, 3 kg of light stabilizer 770, 6 kg of iron oxide green, 933 kg of 800-mesh talc powder, then continue to heat up to 120 ° C, heat preservation, vacuum dehydration for 120 minutes, the vacuum degree should be above -0.095 MPa, after dehydration is completed Cool down, add 70kg of TDI-80 when the temperature is lower than 90°C and keep it warm at 85°C for 120 minutes, then lower the temperature again after the heat preservation is over, add 73.3kg of dimethyl carbonate, 2kg of BUK054 defoamer and 1kg of organic Tin catalyst, stirring for 40 minutes, discharging.

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PUM

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Abstract

The invention relates to the technical field of silicon PU production, and particularly discloses a silicon PU and a preparation method thereof. The preparation method comprises the following steps ofadding polyether 2000, polyether 330 and chloromethyl chloride into a reaction kettle, stirring, heating to 90 DEG C, adding magnesium oxide, antioxidant 1076, light stabilizer 328, light stabilizer770, iron oxide green and 800-mesh talcum powder, continuing heating to 115-125 DEG C, preserving heat, performing vacuum dehydration for 120-150 minutes, cooling after dehydration, adding TDI-80 after cooling to below 90 DEG C, preserving heat for 120-150 minutes at 80-90 DEG, cooling again after heat preservation, adding dimethyl carbonate, antifoaming agent and organic tin catalyst after cooling to below 70 DEG C, and stirring again for 30-40 minutes. Through the preparation method disclosed by the invention, the construction period can be greatly shortened, and the elongation at break is more than 380 percent.

Description

technical field [0001] The invention relates to the technical field of silicon PU production, in particular to a silicon PU and a preparation method thereof. Background technique [0002] Silicon PU is a healthy professional elastic synthetic court surface material system that conforms to ergonomic principles and meets the needs of sports physical characteristics. Silicon-modified polyurethane is used as a cushioning and rebounding structure, and two-component modified acrylic is used as a wear-resistant surface layer. It is generally used as a running track, basketball court, badminton court and other sports venues; as a pavement material for sports facilities, it has good cushioning, ductility and chemical stability, and has strong adhesion to the base layer, which can heal the foundation to a certain extent. Function, the material is easy to construct and can be leveled automatically. When the thickness of paving exceeds 1.5MM at one time, some air bubbles will be genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K3/22
CPCC08G18/4812C08G18/4825C08G18/4829C08K3/22C08K2003/222
Inventor 丁维中丁仕玉
Owner 山东固丰体育产业有限公司
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