Butadiene styrene rubber foaming plate and preparation thereof

A technology of styrene-butadiene rubber and foamed sheets, which is applied in the field of polymer processing, can solve problems such as discontinuity in the production process, and achieve the effects of strong continuity, improved mechanical properties, and improved elasticity

Active Publication Date: 2008-09-03
常州美利晟高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of discontinuous production process in the above-mentioned prior art, the present invention proposes a new styrene-butadiene rubber foamed sheet and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Put 20kg NR on the open mill to plasticize the Mooney viscosity to 40-50 (about 45min), then add 40kg SBR1808, 30kg SBR1712, 10kg BR, 130kg heavy calcium carbonate, 12kg black ointment, 34kg naphthenic oil, 2kg Paraffin, 12kg azodicarbonamide, 6kg zinc oxide, 1kg sulfur, 0.2kg 2-mercaptobenzothiazole, 0.4kg benzothiazole disulfide, 2kg styrenated phenol, 2kg Aflux16, etc. according to powder and oil The sequence of rubber materials is put into the pressurized kneader and kneaded for 7 minutes; the air pressure of the pressurized kneader is controlled to be 0.5-0.8MPa, and the temperature is lower than 100°C, and the kneader is mixed. Refined for 7 minutes, rolled into rolls and sent to the extruder, the extruded sheet was metered and then sent to the first molding foaming machine. The time for one foaming and vulcanization was 30 minutes. Sent to the second molded foaming machine, the secondary foaming vulcanization time is 23min, the temperature of the laminated board ...

Embodiment 2

[0036] Put 22kg NR on the open mill to plasticize the Mooney viscosity to 40-50 (about 45min), then put 64kg SBR1 502, 14kg BR, 140kg light calcium carbonate, 16kg white ointment, 36kg naphthenic oil, 10kg white carbon Black, 2.5kg paraffin, 12kg azodicarbonamide, 6kg zinc oxide, 1kg sulfur, 0.4kg 2-mercaptobenzothiazole, 0.4kg disulfide benzothiazole, 2.5kg 2,2′-methylene - Bis(4-methyl-6 tert-butylphenol), 2kg Aflux25, 10kg titanium dioxide, etc. are put into the pressurized kneader in the order of powder, oil and rubber and kneaded for 8 minutes; The air pressure of the pressure cover of the kneader is 0.5~0.8MPa, the temperature is lower than 100°C, the material is cut, the kneader is mixed for 8 minutes, rolled into a roll and sent to the extruder, and the extruded sheet is metered and sent to the first molding machine Foaming machine, the first foaming vulcanization time is 32min, the temperature of the laminate is controlled at 133°C, the popped primary foam is then sen...

Embodiment 3

[0038]Put 28kg NR on the open mill to plasticize the Mooney viscosity to 40-50 (about 45min), then put 34kg SBR1904, 26kg SBR1502, 12kg BR, 70kg clay, 10kg black ointment, 20kg naphthenic oil, 2kg paraffin, 10kg Dinitrosopentamethylenetetramine, 5kg urea grease, 1kg sulfur, 1kg zinc dimethyldithiocarbamate, 2kg N-(1,3-dimethylbutyl)-N'-phenyl p- Put phenylenediamine, 1.6kg Aflux42, etc. into the pressurized kneader and knead for 8 minutes according to the order of powder, oil and rubber; control the air pressure of the pressurized kneader cover to 0.5-0.8MPa , the temperature is lower than 100 °C, the material is cut, the kneading machine is mixed for 8 minutes, rolled into a roll and sent to the extruder, and the extruded sheet is metered and then sent to the first molding foam machine. The temperature of the pressing plate is 134°C, and the ejected primary foam is then sent to the second molding foam machine. The secondary foaming and vulcanization time is 22 minutes, and th...

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Abstract

The invention relates to a butadien styene rubber foamed sheet and preparation method. The butadien styene rubber foamed sheet comprises(by weight parts): the total sum of butadien styene rubber, natural rubber and polybutadiene being 100 parts, filler 70-180 parts, black factice or white factice 10-20 parts, naphthenic oil 20-60 parts, black carbon or carbon white 0-25 parts, olefin 1-4 parts, foaming agent 10-20 parts, blowing promoter2-8 parts, sulfur 0.5-3 parts, promoter 0.2-3 parts, antiager 1-4 parts, dispersant 1-4 parts, white titanium pigment 0-15 parts. The method comprises: raw roll milling, pressure type milling by preliminary refiner, milling by roll mixer, extruding by extruder, once foaming and sulphurizing, second foaming and sulphurizing, cooling. The butadien styene rubbr foamed sheet has good elasticity, high extension percentage, high intension, small compression permanent set, antifriction and limited slip, good damping effect, innocuity and vapidness, low price.

Description

technical field [0001] The invention relates to a styrene-butadiene rubber foamed board and a preparation method thereof, belonging to the field of polymer processing. Background technique [0002] Foam material is a kind of polymer material which is more and more widely used. The biggest difference between it and solid solid materials is that it has a wider collapse platform during compression, so it can experience a large compressive strain under almost constant stress, which leads to its higher energy during compression It is widely used in the field of packaging protection due to its absorption capacity. The tortuous and connected pores in the foam material can change the straight-line propagation of sound, causing energy loss due to viscous flow. Many surfaces in the porous body can be relatively displaced in a short distance under the action of airflow pressure, and have good sound damping ability, which is an ideal anti-noise material. [0003] Chinese patent CN101...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08K5/47C08J9/04B29C67/20B29C47/38C08L7/00C08L9/00C08K3/00C08K5/23B29C48/395
CPCB29C47/0004B29C48/022B29K2007/00B29K2105/04
Inventor 吴海宙
Owner 常州美利晟高分子科技有限公司
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