Leadfree fritted glaze suitable for secondary sintering

Abstract

The invention discloses a leadless fritted glaze, which comprises the following parts: 35.0-60.0%SiO2, 14.0-18.0%Al2O3, 3.0-10.0%CaO, 0.0-5.0%MgO, 5.0-10.0%K2O, 2.0-5.0%Na2O, 5.0-10.0%ZnO, 4.0-12.0%B2O3, 1.0-5.0%SrO, 0.0-1.0 %Li2O, 0.0-8.0%BaO and 5.0-9.0%ZrO2. The invention solves masking problem for magnesium ceramic glaze surface, which prevents environmental pollution due to overcoming to flow lead and cadmium.

Description

technical field [0001] The invention relates to an improved lead-free frit glaze, which is suitable for secondary firing of various porcelains. Background technique [0002] With the improvement of people's awareness of nature and living standards, many sources of pollution in our daily life have been discovered. In order to ensure a healthier life for human beings and the sustainable development of the earth on which human beings depend, people have formulated various restrictions and standards, including daily-use ceramic products that are closely related to human life. [0003] In the international high-grade daily-use fine porcelain characterized by secondary firing (high-temperature plain firing, low-temperature glaze firing), bone china is the mainstream variety, with a history of more than 200 years. In the 1970s and 1980s, talc porcelain and high-quartz porcelain were successfully developed in Shandong. By the end of the 20th century, high-grade daily-use fine porce...

AI Technical Summary

Problems solved by technology

Some have quality problems of their own products, many glaze defects, serious blistering and dull phenomena, which have always been the main obstacles to the production of high-grade porcelain after secondary firing; some have limited adaptability, and some lead-free glazes are only limited to bone china. , It is suitable for high quartz porcelain, but not for steatite porcelain, etc.

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