Thermoplastic elastomer micropore foaming material and preparation method thereof

A technology of thermoplastic elastomers and microcellular foam materials, which is applied in the field of rail transit and can solve problems such as few researches

Active Publication Date: 2012-11-14
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been many studies on the foaming of microcellular plastics and microcellular rubber. TPV has excellent performance and is suita

Method used

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  • Thermoplastic elastomer micropore foaming material and preparation method thereof
  • Thermoplastic elastomer micropore foaming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Select recipe 1 in the recipe table, the steps are as follows:

[0033] 1) Put the compatibilizer in a double-roll mill (roller temperature 80°C), add foaming agent and auxiliary foaming agent at the same time after masticating for 3 minutes, and knead for 5 minutes to prepare a foaming agent masterbatch.

[0034] 2) Add rubber, active agent, reinforcing filler, softener, vulcanizing agent and accelerator into the open mill at a temperature of 60°C in sequence, mix for 25 minutes, and disperse evenly to prepare a mixed rubber.

[0035] 3) After the mixed rubber is chopped and processed, it is evenly mixed with the plastic through a high-speed mixer, and extruded and granulated by an extruder to prepare TPV pellets. 150°C, 160°C in the third zone, 170°C in the fourth zone, 160°C in the fifth zone, and the screw speed is 30rpm.

[0036] 4) After pulverizing the foaming agent masterbatch obtained in step 1) and uniformly mixing the TPV pellets obtained in step 3) with a h...

Embodiment 2

[0038] Select recipe 2 in the recipe table, the steps are as follows:

[0039] (1) Put the compatibilizer in a two-roll mill (roller temperature 100°C), add foaming agent and auxiliary foaming agent at the same time after masticating for 1 minute, and knead for 3 minutes to prepare a foaming agent masterbatch.

[0040] (2) Add rubber, active agent, reinforcing filler, softener, vulcanizing agent and accelerator to the internal mixer in sequence, at a temperature of 80°C, at a rotor speed of 100r / min, and knead for about 10 minutes until the dispersion is uniform. into rubber compound.

[0041] (3) Chop the mixed rubber and mix it evenly with plastics, and prepare TPV pellets after extruding and granulating with an extruder. Zone 160°C, zone 4 160°C, zone 5 160°C, screw speed 90rpm.

[0042](4) After the thermoplastic vulcanizate and foaming agent masterbatch are pulverized and mixed uniformly by a high-speed mixer, they are extruded and shaped by a twin-screw extruder to obt...

Embodiment 3

[0044] Select formula 3 in the formula table, the steps are as follows:

[0045] (1) Put the compatibilizer in a double-roll mill (roller temperature 90°C), add foaming agent and auxiliary foaming agent at the same time after masticating for 2 minutes, and knead for 8 minutes to prepare a foaming agent masterbatch.

[0046] (2) Put rubber, active agent, reinforcing filler, softener, vulcanizing agent and accelerator into the open mill at 60°C in sequence, knead for about 20 minutes, and disperse evenly to prepare a mixed rubber.

[0047] (3) Chop the mixed rubber and mix it evenly with plastics, and prepare TPV pellets after extruding and granulating with an extruder. Zone 130°C, zone 4 140°C, zone 5 140°C, screw speed 60rpm.

[0048] (4) After the thermoplastic vulcanizate and foaming agent masterbatch are pulverized and mixed uniformly by a high-speed mixer, they are extruded and shaped by a twin-screw extruder to obtain a high-performance microcellular foaming material. A...

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Abstract

The invention discloses a thermoplastic elastomer micropore foaming material and a preparation method thereof. The material comprises the following componnets in parts by weight: 70-95 parts of thermoplastic elastomer and 5-30 parts of foaming agent master batch. The preparation method comprises the following steps of: based on weight parts, placing 50-90 parts of compatibilizers, 6-30 parts of foaming agent and 4-20 parts of auxiliary foaming agents into a double-roller open mill for mixing to prepare foaming agent master batch; sequentially adding 100 parts of matrix rubber, 5-10 parts of active agent, 20-100 parts of reinforced fillers, 0-20 parts of softening agents, 0.5-5 parts of vulcanizing agents and 1-10 parts of accelerating agents into the open mill or an internal mixer for uniformly mixing to prepare a rubber compound; chopping the rubber compound and uniformly mixing the chopped rubber compound with 10-70 parts of plastics by a high-speed mixer; and extruding and pelleting the mixture to prepare thermoplastic vulcanizate (TPV) aggregates; and uniformly mixing the foaming agent master batch with the TPV aggregates to extrude and form again to prepare a high-performance micropore foaming material for vibration attenuation. The TPV foaming material is high in physical and mechanical properties and thermal ageing performance, is simple in process, can be widely popularized, and is suitable for being used in the field of rail transit.

Description

Technical field: [0001] The present invention relates to a thermoplastic elastomer microcellular foaming material and a preparation method thereof, in particular to a high-performance dynamic vulcanized thermoplastic elastomer (TPV) microcellular foaming material and a preparation method thereof, which can be used as an elastic reducing Vibration materials are mainly used in the field of rail transit. Background technique: [0002] Thermoplastic vulcanizate (TPV) is the fastest growing and most widely used type of thermoplastic elastomer. It is made of fully vulcanized rubber dispersed in thermoplastic resin. It has both the high elastic properties of traditional rubber and the thermoplasticity of resin. Processing performance, traditional plastic processing equipment and processing methods can be used. TPV has many varieties, wide performance, high heat-resistant temperature, excellent aging resistance, small high-temperature compression permanent deformation, and excellen...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L9/06C08L23/16C08L9/02C08L23/22C08L11/00C08L23/06C08L23/12C08L77/00C08L25/06C08L25/12C08L55/02C08L69/00C08K13/02C08J9/10B29C47/92B29B9/06B29B7/28B29B7/72B29C48/92
CPCB29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 谭宇胡庆华胡天辉黄自华
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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