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Blending method of transparent raw lacquer coating

A technology of raw lacquer coating and preparation method, which is applied in the direction of rosin coating, natural resin coating, coating, etc., and can solve the problems such as the difficulty of raw lacquer preparation and modification

Inactive Publication Date: 2016-01-06
湖北宝石花工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Urushiol, the main film-forming substance in raw lacquer, is a mixture of catechol groups and aliphatic chains, including saturated urushiol, monoene urushiol, diene urushiol, triene urushiol, etc., and these urushiols will Due to the difference in tree species and production areas, the proportion and chemical structure of urushiol in the total amount of urushiol are also different. The complex composition brings certain difficulties to the modulation and modification of raw lacquer

Method used

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  • Blending method of transparent raw lacquer coating
  • Blending method of transparent raw lacquer coating
  • Blending method of transparent raw lacquer coating

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Embodiment 1: a kind of preparation method of transparent raw lacquer coating, by the following methods: (a) one, the pretreatment of raw lacquer: the hair dam raw lacquer with water content 25% is filtered to remove impurity, drop into oxidation polymerizer, in rotating speed is 13 Stir at room temperature at -15 rpm until the moisture content of the raw lacquer is 6-8%, and the raw lacquer liquid becomes a 5-8cm Newton body that can be drawn; 2. Pretreatment of linseed oil: put 50 parts of double-bleached linseed oil into the Heat the polymerization pot to 250°C, put in 6 parts of rosin powder, stir and cook together, and turn on the exhaust fan to exhaust the smoke. When the rosin is completely melted, heat up to 270°C, keep it for 10-15 minutes, and check the viscosity. When the linseed oil becomes a 6-10cm Newton body that can be drawn, it can be taken out of the pot, and it is cooled to room temperature by stirring and exhausting smoke. 3. Put the pretreated raw l...

Embodiment 2

[0049] Embodiment 2: A kind of preparation method of transparent raw lacquer coating, through the following methods: (a) 1. Pretreatment of raw lacquer: mix Maoba raw lacquer with a water content of 25% and Shaanxi raw lacquer with a water content of 30% by weight of 1:1 Specific mixing (average moisture content 27.5%), filter to remove impurities, put it into an oxidation polymerizer, stir at room temperature at a speed of 13-15 rpm, until the moisture content of the raw lacquer is 6-8%, and the raw lacquer liquid becomes 5-8 2. Pretreatment of linseed oil: put 50 parts of double-bleached linseed oil into the polymerization pot and heat to 250°C, put in 6 parts of rosin powder and stir and cook together, and turn on the exhaust fan to exhaust the smoke. When the rosin is completely melted, heat up to 270°C, keep it for 10-15 minutes, and check the viscosity. When the linseed oil becomes a 6-10cm Newton body that can be drawn, it can be taken out of the pot, and it is cooled to...

Embodiment 3

[0050]Embodiment 3: A kind of preparation method of transparent raw lacquer coating, through the following methods: (a) 1. Pretreatment of raw lacquer: the Maoba raw lacquer with a water content of 25% and the Guizhou raw lacquer with a water content of 32% by weight of 1:1 Specific mixing (average moisture content 28.5%), filter to remove impurities, put it into an oxidation polymerizer, stir at room temperature at a speed of 13-15 rpm, until the moisture content of the raw lacquer is 6-8%, and the raw lacquer liquid becomes 5-8 2. Pretreatment of linseed oil: put 50 parts of double-bleached linseed oil into the polymerization pot and heat to 250°C, put in 6 parts of rosin powder and stir and cook together, and turn on the exhaust fan to exhaust the smoke. When the rosin is completely melted, heat up to 270°C, keep it for 10-15 minutes, and check the viscosity. When the linseed oil becomes a 6-10cm Newton body that can be drawn, it can be taken out of the pot, and it is cooled...

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Abstract

The invention belongs to the field of chemical modification treatment of coatings, particularly relates to a transparent raw lacquer coating and aims to provide a high-quality light-color transparent raw lacquer coating on account of the improvement on the shortcomings of the raw lacquer coating in the prior art. A blending method of the transparent raw lacquer coating comprises the following steps: pre-treating the raw lacquer; filtering and removing impurities of the raw lacquer, stirring the raw lacquer till the raw lacquer can be drawn into 5-8cm newtonian fluid; pre-treating linseed oil; adding 50 parts of linseed oil after being leached twice into a polymerization pot for heating, adding rosin powder, stirring and decocting the linseed oil and the rosin powder together, adding the raw lacquer and the linseed oil which are subjected to pretreatment into a vacuum kneading machine according to a weight ratio of 50 to 50, and kneading for 4-5 hours to obtain the transparent raw lacquer coating.

Description

technical field [0001] The invention relates to the field of chemical modification treatment of raw lacquer, in particular to a preparation method of transparent raw lacquer coating. Background technique [0002] Chinese raw lacquer is an excellent natural lacquer produced in my country. my country's raw lacquer production ranks first in the world. It has always been a traditional export product, and currently it is mainly exported to Japan and Southeast Asian countries. Raw lacquer (Rawlaequer) refers to the milky milky liquid flowing out from the phloem cut of sumac (Rhusverniciflua Stokes). The main components include urushiol (60-70%), colloid (5-7%), water-insoluble glycoprotein (1%), laccase (0.24%), water (20-25%) and the like. When it is exposed to air, its color will change from light to dark due to oxidation, and gradually turn into dark brown, and finally become a hard paint film. Raw lacquer film is hard and bright, wear-resistant, heat-resistant and corrosion...

Claims

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Application Information

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IPC IPC(8): C09D193/00C09D191/00C09D193/04
Inventor 洪克俭王磊
Owner 湖北宝石花工艺品有限公司
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