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Polyether/phthalic anhydride mixed cast polyurethane elastomer and its application

A technology of polyurethane elastomer and phthalic anhydride polyester polyol, which is applied in the field of high wear-resistant polyurethane elastomer materials and high resilience, can solve the problems of price increase and limit application prospects, and achieve low price, high wear resistance, The effect of improved wear resistance

Active Publication Date: 2016-03-16
ZHEJIANG HUAFON NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme uses a wear-resistant modifier to improve the wear-resistant performance, and the wear-resistant modifier is generally a reactive silicone modified material, and must have a certain amount of addition, but the high price of the reactive silicone material In addition, the limitation of the promotion range seriously limits its application prospect

Method used

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  • Polyether/phthalic anhydride mixed cast polyurethane elastomer and its application
  • Polyether/phthalic anhydride mixed cast polyurethane elastomer and its application

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0052] Preparation of the isocyanate component: 20.0%wt of PAPDE2000 and 30.0%wt of PTMEG2000 are accurately metered into the reactor, the temperature is raised to 120°C, dehydration is carried out at a vacuum of -0.095Mpa for 2 hours, the material is cooled to 60°C, the vacuum is eliminated and Add 50.0%wt of MDI, keep the temperature at 60°C, and maintain the reaction under nitrogen protection for 3 hours to obtain a prepolymer with a free isocyanate content of 14.64%wt, [NCO]=3.49mmol / g;

[0053] Preparation of polyol components: 75.0%wt of PTMEG2000, 22.0%wt of BDO, 0.1%wt of BiCAT8, 0.2%wt of Irganox1010, 0.1%wt of Irgafos168, 0.4%wt of Tinuvin328, 0.2%wt were precisely added into the reactor %wt Tinuvin292, 2.0%wtNano-SiO 2 , heated up to 120°C, dehydrated for 2 hours under a vacuum degree of -0.095Mpa, cooled to 80°C to obtain a polyol component, [OH]=5.67mmol / g;

[0054] Elastomer synthesis: inject the above-mentioned isocyanate component and polyol component into the...

example 2

[0056] Preparation of the isocyanate component: 9.0%wt of PAPH2000 and 36.0%wt of PTMEG2000 were accurately metered into the reactor, the temperature was raised to 120°C, dehydration was carried out at a vacuum of -0.095Mpa for 2 hours, the material was cooled to 60°C, the vacuum was removed and Adding it to 55.0%wt MDI, slowly raising the temperature to 80°C, and maintaining the reaction under nitrogen protection for 3 hours, to obtain a prepolymer with a free isocyanate content of 16.54%wt, [NCO]=3.94mmol / g;

[0057] Preparation of polyol components: 79.0%wt of PTMEG2000, 18.0%wt of BDO, 0.1%wt of BiCAT-8, 0.2%wt of Irganox1010, 0.1%wt of Irgafos168, 0.4%wt of Tinuvin328 were precisely added into the reactor , 0.2%wt Tinuvin292, 2.0%wtNano-SiO 2 ,, heat up to 120°C, dehydrate under vacuum degree -0.095Mpa for 2 hours, cool to 90°C to obtain polyol component, [OH]=4.82mmol / g;

[0058] Elastomer synthesis: inject the above-mentioned isocyanate component and polyol component i...

example 3

[0060] Preparation of the isocyanate component: 15.0%wt of PAPN2000 and 30.0%wt of PTMEG2000 are accurately metered into the reactor, the temperature is raised to 120°C, and dehydration is carried out at a vacuum of -0.095Mpa for 2 hours, the material is cooled to 60°C, the vacuum is eliminated and Adding it to 55.0%wt MDI, slowly raising the temperature to 80°C, and maintaining the reaction under nitrogen protection for 3 hours, to obtain a prepolymer with a free isocyanate content of 16.54%wt, [NCO]=3.94mmol / g;

[0061] Preparation of polyol components: 75.0%wt of PTMEG2000, 22.0%wt of BDO, 0.1%wt of BiCAT-8, 0.2%wt of Irganox1010, 0.1%wt of Irgafos168, 0.4%wt of Tinuvin328 were precisely added into the reactor , 0.2%wt Tinuvin292, 2.0%wtNano-SiO 2 , heated to 120°C, dehydrated for 2 hours under vacuum degree -0.095Mpa, cooled to 100°C to obtain polyol component, [OH]=5.67mmol / g;

[0062] Elastomer synthesis: pour the isocyanate component and polyol component obtained above...

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Abstract

The invention discloses polyether / phthalic anhydride hybrid pouring type polyurethane elastomer and application thereof. The polyether / phthalic anhydride hybrid pouring type polyurethane elastomer is obtained by mixing an isocyanate component and a polyhydric alcohol component in a weight ratio of 100 / (60-80) at 60 DEG C-80 DEG C, and pouring into a mould of 60 DEG C-100 DEG C for vulcanization for 30 minutes-60 minutes, wherein after being mixed with 0-30%wt of benzolic acid anhydride polyester polyols (PAPE) and 70%wt-100%wt of polytetramethylene ether glycol (PTMEG), the isocyanate component reacts with isocyanate or a derivative thereof to generate prepolymer with isocyanic acid content of 8%wt-20%wt; the polyhydric alcohol component is formed by mixing 67%wt-87%wt of PTMEG, 10%wt-30%wt of small molecule glycol and a proper amount of functional auxiliaries and wear-resisting auxiliaries. The obtained elastomer is high in wear resistance and resilience, and can be applied to a plurality of trundles such as speed-skating wheels and wheels of skating shoes.

Description

technical field [0001] The invention relates to a polyurethane elastic body material with high resilience and high wear resistance, in particular to a polyether / phthalic anhydride mixed casting polyurethane elastic body and its application as a caster after casting. Background technique [0002] Compared with other elastic materials, polyurethane materials have a wider range of hardness, and have better comprehensive performance in terms of wear resistance, elasticity and mechanical properties. Therefore, polyurethane is mostly used in elastic materials in skate wheels, skateboard wheels, and industrial and medical casters. Material. Casters can be divided into high-speed wheels and medium-low speed wheels according to their use status. On the one hand, high-speed wheels require wheels with higher hardness (hardness greater than Shore 85A), so that the rolling resistance is small and the internal heat generation is small when rolling at high speed. On the other hand, it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/12C08L75/08C08L75/06C08K3/36
CPCC08G18/12C08G18/4211C08G18/4854C08G18/6607C08G2380/00C08G18/6674
Inventor 孙水升朱彦肖丽群王大保唐劲松
Owner ZHEJIANG HUAFON NEW MATERIALS CO LTD
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