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Seawater corrosion resistant thermoplastic polyurethane elastomer rubber and preparation method thereof

A thermoplastic polyurethane and thermoplastic elastomer technology, applied in the field of foamed plastics, can solve the problems of difficult market application and low service life, and achieve the effects of avoiding photo-oxidative aging, long service life and reasonable rubber formula

Inactive Publication Date: 2019-12-13
HUBEI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The density of TPU is similar to that of seawater, so it can be used to make the sheath of marine floating cables. However, because TPU and seawater are prone to electrochemical corrosion and chloride ion corrosion, its own service life is extremely low, and the market application is relatively difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The invention provides a technical solution: a thermoplastic polyurethane elastomer rubber resistant to seawater corrosion, including TPU66%, EPDM thermoplastic elastomer 12%, hydrogenated carboxybutyronitrile 5%, dioctyl phthalate 0.6%, o- 0.4% dibutyl phthalate, 0.3% dioctyl adipate, 0.6% o-hydroxybenzophenone, 0.3% UV absorber, 8% reinforcing filler, 0.8% silane coupling agent, 6% calcium sulfide .

[0026] A preparation method of seawater corrosion-resistant thermoplastic polyurethane elastomer rubber, comprising the following preparation steps:

[0027] S1: Proportion weighing, take materials according to the above material proportion;

[0028] S2: Mixing rubber materials, melting TPU at 180°C, then adding EPDM thermoplastic elastomer and hydrogenated carboxylated nitrile in turn, and mixing to form rubber materials;

[0029] S3: Add additives, place the rubber in a container, and stir with a stirrer, control the speed of the stirrer at 200r / min, keep stirring fo...

Embodiment 2

[0035] The invention provides a technical solution: a thermoplastic polyurethane elastomer rubber resistant to seawater corrosion, including TPU66%, EPDM thermoplastic elastomer 12%, hydrogenated carboxybutyronitrile 5%, dioctyl phthalate 0.6%, o- 0.4% dibutyl phthalate, 0.3% dioctyl adipate, 0.6% o-hydroxybenzophenone, 0.3% UV absorber, 8% reinforcing filler, 0.8% silane coupling agent, 6% calcium sulfide .

[0036] A preparation method of seawater corrosion-resistant thermoplastic polyurethane elastomer rubber, comprising the following preparation steps:

[0037] S1: Proportion weighing, take materials according to the above material proportion;

[0038] S2: Mixing rubber materials, melting TPU at 190°C, then adding EPDM thermoplastic elastomer and hydrogenated carboxylated nitrile in turn, and mixing to form rubber materials;

[0039] S3: Add additives, put the rubber in a container, and stir with a stirrer, control the speed of the stirrer at 210r / min, keep stirring for ...

Embodiment 3

[0045] The invention provides a technical solution: a thermoplastic polyurethane elastomer rubber resistant to seawater corrosion, including TPU66%, EPDM thermoplastic elastomer 12%, hydrogenated carboxybutyronitrile 5%, dioctyl phthalate 0.6%, o- 0.4% dibutyl phthalate, 0.3% dioctyl adipate, 0.6% o-hydroxybenzophenone, 0.3% UV absorber, 8% reinforcing filler, 0.8% silane coupling agent, 6% calcium sulfide .

[0046] A preparation method of seawater corrosion-resistant thermoplastic polyurethane elastomer rubber, comprising the following preparation steps:

[0047] S1: Proportion weighing, take materials according to the above material proportion;

[0048] S2: Mixing rubber, melting TPU at 200°C, then adding EPDM thermoplastic elastomer and hydrogenated carboxylated nitrile in turn, and mixing to form rubber;

[0049] S3: Add additives, place the rubber in a container, and stir with a stirrer, control the speed of the stirrer at 230r / min, keep stirring for 20min, add dioctyl...

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Abstract

The invention relates to the technical field of foamed plastics, and specifically discloses seawater corrosion resistant thermoplastic polyurethane elastomer rubber. The seawater corrosion resistant thermoplastic polyurethane elastomer rubber is prepared from the following components: TPU (thermoplastic polyurethane elastomer), EPDM (Ethylene-Propylene-Diene Monomer) thermoplastic elastomer, hydrogenated carboxylated butyronitrile, dioctyl phthalate, dibutyl phthalate, dioctyl adipate, ortho-hydroxy benzophenone, ultraviolet absorbent, reinforcement filling agents, silane coupling agents and calcium sulfide. The invention further discloses a preparation method of the seawater corrosion resistant thermoplastic polyurethane elastomer rubber. The preparation method comprises the following manufacturing steps of (S1) matching and weighing; (S2) mixing rubber materials; (S3) adding accessory ingredients; (S4) modifying the coupling agents; (S5) extruding at a first stage; and (S6) extrudingat a second stage. The seawater corrosion resistant thermoplastic polyurethane elastomer rubber has the beneficial effects that the formula is reasonable, the seawater corrosion resistant performanceis improved by mixing the EPDM thermoplastic elastomer, the self tensile strength and compressive strength are increased through supercritical extrusion, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of foamed plastics, in particular to a seawater corrosion-resistant thermoplastic polyurethane elastomer rubber and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber, referred to as TPU, is a (AB) n-type block linear polymer, A is a polyester or polyether with a high molecular weight (1000-6000), and B is a polyester or polyether containing 2-12 Diols with chain carbon atoms, the chemical structure between AB chain segments is diisocyanate. Thermoplastic polyurethane rubber is cross-linked by intermolecular hydrogen bonds or lightly cross-linked between macromolecular chains. As the temperature increases or decreases, these two cross-linked structures are reversible. In the molten state or the solution state, the intermolecular force weakens, but after cooling or solvent volatilization, there are strong intermole...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L23/16C08L15/00C08K13/06C08K9/06C08K5/132C08K7/08
CPCC08L75/04C08L2201/08C08L2205/035C08L2207/04C08L23/16C08L15/005C08K13/06C08K9/06C08K5/132C08K7/08Y02P20/54
Inventor 朱文利
Owner HUBEI UNIV OF ARTS & SCI
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