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Article
Publication date: 3 June 2014

Tiedan Chen, Yanqiu Xia, Zhilu Liu and Zeyun Wang

The mixture of attapulgite and bentonite was used as a thickener, and polyalphaolefin was used as the base oil to prepare the new lubricating grease. Some solid particles…

Abstract

Purpose

The mixture of attapulgite and bentonite was used as a thickener, and polyalphaolefin was used as the base oil to prepare the new lubricating grease. Some solid particles such as Polytetrafluoroethene (PTFE), MoS2, nano-calcium carbonate and graphite were added in the new lubricating grease as anti-wear additives to investigate the tribological sensitivity.

Design/methodology/approach

The new lubricating grease was evaluated by optimol-SRV reciprocating friction and wear tester, and the wear volumes were determined using a MicroXAM-3D. At the same time, the dropping point and the cone penetration were investigated and analyzed. The tribological properties of the new lubricating grease and the sensitivity of some solid lubricating additives to the new lubricating base grease were investigated; pure organic-bentonite and pure organic-attapulgite base grease were used as contrast.

Findings

The new lubricating grease based on the surface-modified bentonite/attapulgite clay base grease was synthesized with a relatively high dropping point, and the mass ratio is 25/75 bentonite/attapulgite clay base grease, having a better tribological performance. MoS2 was used as an anti-wear additive that has good tribological sensitivity to the new lubricating base grease.

Originality/value

The main innovative thought of this work lies in the mixture of attapulgite and bentonite used as thickener. A relevant report is not available at present.

Details

Industrial Lubrication and Tribology, vol. 66 no. 4
Type: Research Article
ISSN: 0036-8792

Keywords

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Article
Publication date: 14 March 2020

Zhaojie Meng, Yunxia Wang, Xiaocui Xin, Hao Liu, Yunfeng Yan and Fengyuan Yan

The purpose of this study is to examine the fretting wear property of ultra-high molecular weight polyethylene (UHMWPE)-based composites reinforced by different content of…

Abstract

Purpose

The purpose of this study is to examine the fretting wear property of ultra-high molecular weight polyethylene (UHMWPE)-based composites reinforced by different content of attapulgite.

Design/methodology/approach

A series of composites were prepared by a hot-pressing method. Fretting tests were carried out using an SRV-IV oscillating reciprocating friction wear tester with a load of 10 N and a frequency of 100 Hz. The morphology of the fracture structure and the worn surface was observed by field-emission scanning electron microscopy, X-ray diffraction and a non-contact three dimensional surface profiler.

Findings

With the addition of attapulgite, the microstructure of the composites become more regular, and their heat resistance improved. Furthermore, the friction coefficient and the specific wear rate of the composites with lower filler content reduced compared with that of neat UHMWPE, and the optimum filler content is 1 per cent.

Originality/value

The study investigated the fretting resistance mechanism of the attapulgite in the UHMWPE matrix. The results could help to provide some experimental evidence for the broader application of silicates on the fretting wear resistance of polymers.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-10-2019-0420/

Details

Industrial Lubrication and Tribology, vol. 72 no. 7
Type: Research Article
ISSN: 0036-8792

Keywords

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Article
Publication date: 1 May 2012

Ruma Chakrabarti and P.C. Shobhanashree

The field of flame retardancy has witnessed rigorous development in the area of new technologies, products and materials to meet the challenge and needs of ever changing…

Abstract

The field of flame retardancy has witnessed rigorous development in the area of new technologies, products and materials to meet the challenge and needs of ever changing safety regulations and cope with the changing requirements of everyday use. Most of the chemical flame retardants available are non bio-degradable and result in bio-accumulation, thus posing a serious threat to the environment and also to human life, especially to children. The carcinogenic nature of flame retardants has led to bans on the application of such chemicals on children wear about 30 years ago, but the risk of fire on clothing in the household still remains high. As such, this work proposes the use of attapulgite, a naturally occurring form of clay to impart flame retardancy to cotton and poly-cotton fabrics which are the most commonly used material in the field of home textiles. The finish is applied onto cotton and poly-cotton by the pad-dry–cure method. Evaluation of finished fabric is carried out for flame retardancy, tensile strength, abrasion resistance, stiffness, and durability according to ASTM standards, and the results have been recorded.

Details

Research Journal of Textile and Apparel, vol. 16 no. 2
Type: Research Article
ISSN: 1560-6074

Keywords

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Article
Publication date: 1 December 1972

Attagel 50 is a processed form of the mineral attapulgite, and can be used in both aqueous and organic systems as a suspending, thickening or thixotropic agent. Typical…

Abstract

Attagel 50 is a processed form of the mineral attapulgite, and can be used in both aqueous and organic systems as a suspending, thickening or thixotropic agent. Typical uses are as a suspending and sag control agent in adhesives, plastics and sealants, as a suspending and flatting agent in paints, and as a stabilising or thickening agent in emulsions.

Details

Pigment & Resin Technology, vol. 1 no. 12
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 9 April 2018

Pengfei Du, G.X. Chen, Shiyuan Song, Jiang Wu, Kechen Gu, Dachuan Zhu and Jin Li

The tribological properties of muscovite and its thermal-treated products as lubricant additives in lithium grease were investigated. The effect of thermal temperature on…

Abstract

Purpose

The tribological properties of muscovite and its thermal-treated products as lubricant additives in lithium grease were investigated. The effect of thermal temperature on the crystal structure and tribological properties of muscovite was studied. This study aims to explore the tribological mechanism of muscovite and optimize a proper thermal activation temperature, thus further improving the tribological properties.

Design/methodology/approach

The crystal structure of muscovite samples was characterized by SEM, TG-DSC, XRD and FTIR. The tribological properties of grease samples were investigated using a four-ball tribotester and the worn surface was analyzed by SEM and EDS.

Findings

The excellent tribological properties of muscovite can be ascribed to the layer structure and lubricant film formed on the worn surface. Thermal temperature at 500-600°C increases the surface activity and oxygen releasing capability, and thus favors the formation of lubricant film and accordingly further improves the tribological properties. However, the layer structure is destroyed and hard phases such as alumina and amorphous appear after thermal temperature activated beyond 1000°C, as it results in the aggravation of friction and wear.

Originality/value

To the authors’ knowledge, it is the first to study the effect of thermal temperature on the crystal structure and tribological properties of muscovite. The tribological mechanism of muscovite particle and its thermal-treated products was disclosed.

Details

Industrial Lubrication and Tribology, vol. 70 no. 3
Type: Research Article
ISSN: 0036-8792

Keywords

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Article
Publication date: 1 October 1991

Preparation and perfection of trial formulations by ICI Resins has led to sales of ‘NeoRez’ polyurethane resin and ‘Winnofil’ thixotropes to Nan Ji Paint in Shanghai for…

Abstract

Preparation and perfection of trial formulations by ICI Resins has led to sales of ‘NeoRez’ polyurethane resin and ‘Winnofil’ thixotropes to Nan Ji Paint in Shanghai for car underbody sealer products. This is ICI Resins' first business with the emerging automotive industry of the Peoples Republic of China.

Details

Pigment & Resin Technology, vol. 20 no. 10
Type: Research Article
ISSN: 0369-9420

Content available

Abstract

Details

Pigment & Resin Technology, vol. 32 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

Content available

Abstract

Details

Pigment & Resin Technology, vol. 32 no. 3
Type: Research Article
ISSN: 0369-9420

Keywords

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Article
Publication date: 1 July 1992

A significant advance in pigment polymer chemistry has been perfected by Rohm and Haas which will enable paint manufacturers to reduce to a minimum the unpleasant smells…

Abstract

A significant advance in pigment polymer chemistry has been perfected by Rohm and Haas which will enable paint manufacturers to reduce to a minimum the unpleasant smells of all their interior and exterior formulations, from flat through to gloss.

Details

Pigment & Resin Technology, vol. 21 no. 7
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 1 July 1984

It is well known that cobalt driers can cause discoloration in paint systems. Obviously, this is undesirable in clear varnishes, as well as in white or pastel shades. When…

Abstract

It is well known that cobalt driers can cause discoloration in paint systems. Obviously, this is undesirable in clear varnishes, as well as in white or pastel shades. When using cobalt, a deterioration of as much as 4 or 5 Gardner units may be experienced. In order to minimise this effect, G. M. Langer & Co. have introduced Lanco Rex 84.

Details

Pigment & Resin Technology, vol. 13 no. 7
Type: Research Article
ISSN: 0369-9420

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