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Article
Publication date: 26 August 2014

Zhifeng Huang, Xiaoyang Ma, Zemin Qiao, Shujuan Wang and Xinli Jing

This paper aims to disclose the evolution of pendulum hardness of two-component acrylic polyurethane coatings during the cure process and attempts to describe the…

Abstract

Purpose

This paper aims to disclose the evolution of pendulum hardness of two-component acrylic polyurethane coatings during the cure process and attempts to describe the quantitative relationship between pendulum hardness and curing time. These findings are helpful for the study of fast curing acrylic polyurethane coatings.

Design/methodology/approach

The pendulum hardness method was used to monitor the hardness of two-component acrylic polyurethane coatings during curing. The quantitative relationship between pendulum hardness and curing time can be obtained with Avrami equation.

Findings

The evolution of coating pendulum hardness can be divided into three stages. By using the Avrami equation that explained the influence of both the acid value and the curing temperature on the drying speed of hydroxyl acrylic resin, the evolution of coating pendulum hardness during curing can also be accurately described.

Research limitations/implications

It should be noted that the physical meaning of the Avrami exponent, n, is not yet clear.

Practical implications

The results are of great significance for the development of fast-curing hydroxyl-functional acrylic resins, with the potential to improve the drying speed of the coatings used in automotive refinish.

Originality/value

It is novel to divide the pendulum hardness into three stages, and, for the first time, the Avrami equation is utilized to describe the evolution of coating pendulum hardness during curing.

Details

Pigment & Resin Technology, vol. 43 no. 5
Type: Research Article
ISSN: 0369-9420

Keywords

Content available
Article
Publication date: 1 December 2005

Abstract

Details

Disaster Prevention and Management: An International Journal, vol. 14 no. 5
Type: Research Article
ISSN: 0965-3562

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Article
Publication date: 21 September 2012

Dan Wang, Dian Liu and Chun Lai

This paper aims to review policy innovations in China for addressing the graduate unemployment crisis that has been created by the expansion of higher education in the past decade.

Abstract

Purpose

This paper aims to review policy innovations in China for addressing the graduate unemployment crisis that has been created by the expansion of higher education in the past decade.

Design/methodology/approach

The authors draw on government documents, research findings, and mass media reports to highlight the key measures of the Chinese government to alleviate the over‐education problem and to improve college graduates' employment prospects.

Findings

The review describes government efforts both at the institutional level to enhance student employability and at the national level to create alternative employment channels. The Chinese experiences show that the challenges posed by the graduate employment crisis may turn out to be a new opportunity to reform higher education in order to better address the needs unique to a country's own society.

Social implications

The review of the Chinese case will inspire policy makers in other countries to seek alternative routes for the development of their own higher education.

Originality/value

This is the first study of its kind to address the recent policy innovations and their implications for potential reform.

Details

On the Horizon, vol. 20 no. 4
Type: Research Article
ISSN: 1074-8121

Keywords

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