Non-yellowing polyurethane character filling material for rubber coating layer of fitness equipment and preparation method of non-yellowing polyurethane character filling material

A technology of fitness equipment and polyurethane, which is applied in the field of non-yellowing polyurethane filler material for the rubber layer of fitness equipment and its preparation, can solve the problems that the filler material is easy to break, fall off, and affect the display of the filler, so as to improve the strength, toughness, Improve the effect of waterproof and avoid breakage

Active Publication Date: 2021-12-31
SHANGHAI HECHENG POLYMER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main material of dumbbells is cast iron, and the outer surface is often covered with a layer of rubber. When dumbbells are sold as commodities, trademarks, weights, etc. are often set on the coated rubber to fill in words, which need to have a prominent effect and Avoid oxidation and yellowing in daily use, and some crossword materials are easy to break and fall off, which will affect the crossword display

Method used

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  • Non-yellowing polyurethane character filling material for rubber coating layer of fitness equipment and preparation method of non-yellowing polyurethane character filling material
  • Non-yellowing polyurethane character filling material for rubber coating layer of fitness equipment and preparation method of non-yellowing polyurethane character filling material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Preparation of chain extender:

[0039] Take N,N-dimethylacetamide, in a nitrogen atmosphere, add 2,2-bis[(4-aminophenoxy)phenyl]hexafluoropropane, 1,3-diaminopropyltetramethyldi Siloxane, stir for 10min, add 3,3',4,4'-hexafluoroisopropyl bis(phthalic anhydride), stir, react for 24h, heat up to 160°C, add xylene, react for 6h, wash , dried to obtain a chain extender; 2,2-bis[(4-aminophenoxy)phenyl]hexafluoropropane, 3,3',4,4'-hexafluoroisopropylbis(phthal Anhydride), the mass ratio of 1,3-diaminopropyltetramethyldisiloxane is 50:44:25;

[0040] (2) Preparation of modified polymer:

[0041] a. Preparation of Product A:

[0042] Take borax, mix it with deionized water, add dopamine hydrochloride in a nitrogen atmosphere, stir for 10 minutes, add sodium carbonate, adjust the system temperature to 7°C, add methacryloyl chloride, keep the temperature, stir for 10 minutes, return to room temperature, and react 12h, extraction and drying to obtain product A; the molar ...

Embodiment 2

[0052] (1) Preparation of chain extender:

[0053] Take N,N-dimethylacetamide, in a nitrogen atmosphere, add 2,2-bis[(4-aminophenoxy)phenyl]hexafluoropropane, 1,3-diaminopropyltetramethyldi Siloxane, stir for 12min, add 3,3',4,4'-hexafluoroisopropyl bis(phthalic anhydride), stir, react for 24h, heat up to 162°C, add xylene, react for 6h, wash , dried to obtain a chain extender; 2,2-bis[(4-aminophenoxy)phenyl]hexafluoropropane, 3,3',4,4'-hexafluoroisopropylbis(phthal Anhydride), the mass ratio of 1,3-diaminopropyltetramethyldisiloxane is 51:44:37;

[0054] (2) Preparation of modified polymer:

[0055] a. Preparation of Product A:

[0056] Take borax, mix it with deionized water, add dopamine hydrochloride in a nitrogen atmosphere, stir for 12 minutes, add sodium carbonate, adjust the system temperature to 3°C, add methacryloyl chloride, keep the temperature, stir for 11 minutes, return to room temperature, and react 18h, extraction and drying to obtain product A; the molar ...

Embodiment 3

[0066] (1) Preparation of chain extender:

[0067] Take N,N-dimethylacetamide, in a nitrogen atmosphere, add 2,2-bis[(4-aminophenoxy)phenyl]hexafluoropropane, 1,3-diaminopropyltetramethyldi Siloxane, stir for 15min, add 3,3',4,4'-hexafluoroisopropyl bis(phthalic anhydride), stir, react for 25h, heat up to 165°C, add xylene, react for 7h, wash , dried to obtain a chain extender; 2,2-bis[(4-aminophenoxy)phenyl]hexafluoropropane, 3,3',4,4'-hexafluoroisopropylbis(phthal Anhydride), the mass ratio of 1,3-diaminopropyltetramethyldisiloxane is 52:45:50;

[0068] (2) Preparation of modified polymer:

[0069] a. Preparation of Product A:

[0070] Take borax, mix it with deionized water, add dopamine hydrochloride in a nitrogen atmosphere, stir for 15 minutes, add sodium carbonate, adjust the system temperature to 0°C, add methacryloyl chloride, keep the temperature, stir for 12 minutes, return to room temperature, and react 24h, extraction and drying to obtain product A; the molar ...

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PUM

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Abstract

The invention discloses a non-yellowing polyurethane character filling material for a rubber coating layer of fitness equipment and a preparation method of the non-yellowing polyurethane character filling material. The non-yellowing polyurethane character filling material comprises the following components: polyol, isocyanate, a modified polymer, a chain extender, a catalyst, deionized water and a foam stabilizer, and the modified polymer is prepared through a reaction of dopamine, methacryloyl chloride, polymethyl methacrylate, gamma-aminopropyltriethoxysilane and deionized water. According to the invention, by setting the components of the chain extender and the preparation process thereof, 2, 2-bis [(4-aminophenoxy) phenyl] hexafluoropropane, amino in 1, 3-diaminopropyl tetramethyldisiloxane, and 3,3',4,4'-hexafluoroisopropyl bis (phthalic anhydride) as a raw material and reacting, so that the stability, the antifouling property and the mechanical property of the character filling material are improved.

Description

technical field [0001] The invention relates to the technical field of polyurethane filler materials, in particular to a non-yellowing polyurethane filler material for the rubber covering layer of fitness equipment and a preparation method thereof. Background technique [0002] With the development of society and the implementation of the national fitness policy, the concept of fitness has become more and more popular, and more and more people pay attention to fitness. People gradually realize the importance of good fitness habits for maintaining health. Fitness exercise has become a popular choice for many people. In the process of fitness, fitness equipment is essential, and dumbbells are one of the commonly used fitness equipment. The main material of dumbbells is cast iron, and the outer surface is often covered with a layer of rubber. When dumbbells are sold as commodities, trademarks, weights, etc. are often set on the coated rubber to fill in words, which need to have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/44C08G18/48C08G18/64
CPCC08G18/44C08G18/4825C08G18/6438C08G18/6469C08G18/4081
Inventor 齐文斌徐佳际甘爽潘丰
Owner SHANGHAI HECHENG POLYMER TECH CO LTD
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