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A kind of polyurethane elastomer with high load-bearing and low internal heat generation and preparation method thereof

A polyurethane elastomer and high load-bearing technology, which is applied in the field of preparation of roller materials, can solve problems affecting the service life of rollers, and achieve the effects of reducing internal heat generation, improving heat resistance, and improving thermal stability

Active Publication Date: 2022-03-01
万果新材料科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when small rollers are running at low speeds and under high load conditions, the soft and hard segments inside the polyurethane will generate a lot of heat due to friction, which will affect the service life of the rollers.

Method used

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  • A kind of polyurethane elastomer with high load-bearing and low internal heat generation and preparation method thereof
  • A kind of polyurethane elastomer with high load-bearing and low internal heat generation and preparation method thereof
  • A kind of polyurethane elastomer with high load-bearing and low internal heat generation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: A polyurethane elastomer with high load-bearing and low internal heat generation. The components and their corresponding parts by weight are shown in Table 1, and were prepared through the following steps:

[0042] S1, uniformly mixing diphenylmethane diisocyanate and polymethylene polyphenyl polyisocyanate with a functionality of 2.4 in corresponding parts by weight to obtain a mixed isocyanate;

[0043] S2, dehydrating ethylene glycol adipate at 110° C. for 2.5 hours in a vacuum, cooling to 50° C., adding mixed isocyanate, heating to 70° C. and reacting for 3 hours to synthesize a prepolymer with an NCO content of 5 wt.%, and sealing it for later use;

[0044] S3, stir and mix 1,6-hexanediol, 1,2,6-hexanetriol, and dibutyltin dilaurate evenly, then add the prepolymer obtained in step S1, and mix and stir for 30min at a speed of 5000r / min , quickly poured into the mold, kept at 100°C for reaction molding, demolded after 20 minutes, and then aged at 100°C for...

Embodiment 2-6

[0045] Example 2-6: A polyurethane elastomer with high load and low internal heat generation. The difference from Example 1 is that the components and their corresponding parts by weight are shown in Table 1.

[0046] Each component and parts by weight thereof in table 1 embodiment 1-6

[0047]

Embodiment 7

[0048] Example 7: A polyurethane elastomer with high load and low internal heat generation. The difference from Example 1 is that in step S3, 5 parts of polydimethylsiloxane and 5 parts of polytetrahydrofuran diol are added.

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Abstract

The invention discloses a polyurethane elastomer with high load-bearing and low internal heat generation and a preparation method thereof, and relates to the technical field of preparation of roller materials. The technical points are: a polyurethane elastomer with high load and low internal heat generation, including the following components in parts by weight: diphenylmethane diisocyanate: 100 parts; polymethylene polyphenyl polyisocyanate: 0.5-1.5 parts; Polyester polyol: 150‑200 parts; 1,6‑hexanediol: 5‑15 parts; 1,4‑butanediol: 5‑15 parts; 1,2,6‑hexanetriol: 5‑15 parts ; Catalyst: 0.01-0.5 parts, the polyurethane elastomer prepared by the above formula can meet the load-bearing requirements when used as a roller material, and at the same time greatly reduce the internal heat generation of polyurethane itself.

Description

technical field [0001] The invention relates to the technical field of preparation of roller materials, more specifically, it relates to a polyurethane elastomer with high load-bearing and low internal heat generation and a preparation method thereof. Background technique [0002] Polyurethane elastomers have been widely used in many industrial fields due to their excellent properties such as high elasticity, wear resistance, oil resistance, tear resistance, chemical corrosion resistance, radiation resistance, good adhesion, and strong shock absorption ability. And with the development of polyurethane technology and the continuous expansion of application fields, polyurethane has developed into one of the six major synthetic materials in the world. [0003] A polyurethane elastomer and its preparation method are disclosed in the Chinese invention application patent application publication number CN105801812A, wherein the polyurethane elastomer comprises the following compone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/48C08G18/61C08G18/32
CPCC08G18/664C08G18/6644C08G18/4238C08G18/3206C08G18/6607C08G18/6611C08G18/61C08G18/4854C08G18/4018
Inventor 吴鹏唐恒
Owner 万果新材料科技(上海)有限公司
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