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A kind of paraffin emulsion waterproofing agent and preparation method thereof

A paraffin emulsion and water repellent technology, applied in wax coatings, coatings and other directions, can solve the problems of reduced mechanical properties of wood-based panels, paraffin has no flame retardant effect, etc., to improve chemical stability and waterproof effect, reduce adverse effects, wax low volume effect

Active Publication Date: 2021-07-30
固安盛辉阻燃材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the strong non-polar paraffin attached to the surface of shavings or fibers affects the formation of glue between shavings or fibers, resulting in a decrease in the mechanical properties of wood-based panels; the combustion heat value of paraffin is 43MJ / kg, which is 3.6 times that of wood. Commonly used flame retardants have no flame retardant effect on paraffin

Method used

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  • A kind of paraffin emulsion waterproofing agent and preparation method thereof
  • A kind of paraffin emulsion waterproofing agent and preparation method thereof
  • A kind of paraffin emulsion waterproofing agent and preparation method thereof

Examples

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Embodiment 1

[0031] This embodiment relates to a kind of wood-based panel waterproofing agent, and its preparation raw material includes:

[0032] 15g of ferric iron tetroxide powder, 10g of methyl orthosilicate, 5g of polyoxyethylene sorbitol beeswax derivative, 15g of polyoxyethylene alkyl aryl ether, 250g of chlorinated paraffin.

[0033] Its preparation method comprises the following steps:

[0034] 1) Take 15g of ferric iron tetroxide powder, disperse it in 2000g of water, use 0.1mol / L hydrochloric acid to adjust the pH to 2, add 10g of methyl orthosilicate to the aforementioned liquid, stir well for 15min, and complete the methyl orthosilicate For the modification of ferric oxide powder, add 5 g of polyoxyethylene sorbitol beeswax derivative and 15 g of polyoxyethylene alkyl aryl ether, stir and disperse evenly.

[0035] 2) Heating it to 90°C, and slowly adding 250g of molten chlorinated paraffin to it, keeping the whole system at 90°C, stirring at a speed of 7000rpm for 15min, and ...

Embodiment 2

[0038] This embodiment relates to a kind of wood-based panel waterproofing agent, and its preparation raw material includes:

[0039] 10 g of silicon dioxide powder, 5 g of tetraethyl orthosilicate, 10 g of sorbitan trioleate, 10 g of polyoxyethylene sorbitan monooleate, and 100 g of chlorinated paraffin.

[0040] Its preparation method comprises the following steps:

[0041] 1) Take 10g of silicon dioxide powder and disperse it in 1000g of water, adjust the pH to 3 with 0.1mol / L hydrochloric acid, add 5g of tetraethyl orthosilicate to the aforementioned liquid, and stir thoroughly for 15min to complete the reaction of methyl orthosilicate For the modification of iron oxide powder, add 10 g of sorbitan trioleate and 10 g of polyoxyethylene sorbitan monooleate, and stir to disperse evenly.

[0042]2) Heating it to 80°C, and slowly adding 100g of chlorinated paraffin to it, keeping the whole system at 80°C, stirring at a speed of 5000rpm for 20min, and completing the preparatio...

Embodiment 3

[0045] This embodiment relates to a kind of wood-based panel waterproofing agent, and its preparation raw material includes:

[0046] Zinc oxide powder 10g, propyl orthosilicate 5g, sorbitan sesquioleate 15g, polyoxyethylene lauryl ether 20g, chlorinated paraffin 100g.

[0047] Its preparation method comprises the following steps:

[0048] 1) Take 10g of zinc oxide powder and disperse it in 1000g of water, use 0.1mol / L hydrochloric acid to adjust the pH to 4, stir fully for 15min, complete the modification of ferric oxide powder with methyl orthosilicate, add trisilicate 5g of ester, 15g of sorbitan sesquioleate and 20g of polyoxyethylene lauryl ether, stir and disperse evenly.

[0049] 2) Heating it to 85° C., and slowly adding 100 g of molten chlorinated paraffin to it, keeping the whole system at 85° C., stirring at a speed of 6000 rpm for 10 min, and preparing the primary emulsion.

[0050] 3) Pass the primary emulsion through a high-pressure homogenizer for high-pressur...

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Abstract

The invention belongs to the field of water-proofing agents for wood-based panels, and in particular relates to a paraffin wax emulsion waterproofing agent and a preparation method thereof. The preparation raw materials include solid oxide particles and silicate, and chlorinated paraffin is selected as the paraffin. In the waterproofing agent prepared by the invention, due to the existence of solid particles, the amount of surfactant is low, which not only improves the chemical stability and waterproofing effect of the emulsion, but also reduces the amount of wax added. At the same time, due to the low amount of added wax, the adverse effect of wax on the mechanical properties of wood-based panels can be reduced. When it is necessary to prepare flame-retardant wood-based panels, the required flame retardant content is significantly reduced, and chlorinated paraffin can also be used to a certain extent. Improve the flame retardant performance of the material.

Description

technical field [0001] The invention relates to the field of wood waterproofing agents, in particular to a paraffin emulsion waterproofing agent. Background technique [0002] Wood-based panels made of wood fibers and shavings will cause obvious deformation and swelling after moisture absorption or water absorption, and its strength will also decrease significantly, thereby affecting its application range and service life. Therefore, a certain amount of hydrophobic substances must be added during the production process. Paraffin wax is solid at room temperature and must be heated and melted before use. At present, molten paraffin wax is mainly used as waterproof material in the production of wood-based panels. However, due to the low amount of molten paraffin added, usually 0.5 to 1.5% of the dry fiber, it cannot be evenly distributed in the wood-based panel, resulting in poor waterproof effect; the use of high wax content increases the production cost more; molten paraffin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D191/06C09D7/62C09D7/65
CPCC08K2003/2241C08K2003/2275C08K2003/2296C08L2205/025C08L2205/03C09D191/06C09D7/62C09D7/65C08L71/02C08K9/06C08K3/22C08K3/36
Inventor 罗文圣曹金珍王望蒋军
Owner 固安盛辉阻燃材料有限公司