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Natural surfactant-based paraffin series water-proofing agent

A surfactant and water repellent technology, applied in wood impregnation, wood processing equipment, impregnated wood, etc., can solve the problems of flammability of surfactants, poor biodegradability, large particle size of paraffin emulsion, etc., and achieve improved dimensional stability Sexuality, saving production cost, and improving the effect of hydrophobic performance

Inactive Publication Date: 2014-06-18
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN103031112A discloses a paraffin emulsion waterproofing agent and its preparation method, which solves the problems that the paraffin emulsion has a pungent smell and the emulsified wax is easy to delaminate and break, and the storage stability is poor
[0004] The existing paraffin waterproofing agents mainly have the following problems: First, paraffin waterproofing agents are mostly used in the wood-based panel industry, and there is no requirement for the permeability of the waterproofing agent, and the particle size of the paraffin wax emulsion is relatively large, which is not suitable for the waterproofing of solid wood
Secondly, the storage stability of paraffin emulsion is poor, and it cannot be stored for a long time.
In addition, some paraffin wax emulsions with small particle sizes that can meet the waterproof treatment of solid wood have a series of problems such as flammability, poor biodegradability or toxicity of the surfactants used in their preparation.
In addition, there are many types of emulsifiers and co-emulsifiers added, the cost is high, and the process is relatively complicated

Method used

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  • Natural surfactant-based paraffin series water-proofing agent
  • Natural surfactant-based paraffin series water-proofing agent
  • Natural surfactant-based paraffin series water-proofing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] 1 material

[0061] 58# semi-refined solid paraffin (Yanshan Petrochemical, industrial product), sorbitan fatty acid ester Span-80, alkyl glycoside APG0810, water

[0062] 2 Preparation method

[0063] Take 200g of solid paraffin and melt it at 80°C.

[0064] Take 50g span80 (sorbitan monooleate), 50g APG0810 (C 8 -C 10 Alkyl glucoside) was added to the completely melted paraffin, stirred at 3000rpm at 80°C for 2min, then slowly added 700g of isothermal deionized water while stirring, and continued stirring for 3min to complete the preparation of the primary emulsion. Homogenize the primary emulsion twice with a high-pressure homogenizer at a homogenization pressure of 40 MPa to obtain a paraffin-based water repellent emulsion.

Embodiment 2

[0066] 1 material

[0067] 58# semi-refined solid paraffin (Yanshan Petrochemical, industrial product), sorbitan fatty acid ester Span-80, alkyl glycoside APG0810, water

[0068] 2 Preparation method

[0069] Take 230g of solid paraffin and melt it at 80°C.

[0070] Take 35g of span80 and 35g of APG0810, add them to the completely melted paraffin, stir at 3000rpm at 80°C for 2min, then slowly add 700g of isothermal deionized water while stirring, and continue stirring for 3min to complete the preparation of the primary emulsion. Homogenize the primary emulsion twice with a high-pressure homogenizer at a homogenization pressure of 40 MPa to obtain a paraffin-based water repellent emulsion.

Embodiment 3

[0072] 1 material

[0073] 58# semi-refined solid paraffin (Yanshan Petrochemical, industrial product), sorbitan fatty acid ester span80, alkyl glycoside APG0810, water

[0074] 2 Preparation method

[0075] Take 240g of solid paraffin and melt it at 80°C.

[0076] Take 30g of span80 and 30g of APG0810, add them to the completely melted paraffin, stir at 3000rpm at 80°C for 2min, then slowly add 700g of isothermal deionized water while stirring, and continue stirring for 3min to complete the preparation of the primary emulsion. Homogenize the primary emulsion twice with a high-pressure homogenizer at a homogenization pressure of 40 MPa to obtain a paraffin-based water repellent emulsion.

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Abstract

The invention provides a natural surfactant-based paraffin series water-proofing agent which comprises the following components in parts by weight: 1-2000 parts of paraffin, 1-1000 parts of a natural surfactant and 1-10000 parts of water, wherein the natural surfactant is a natural nonionic surfactant. The paraffin emulsion wood water-proofing agent provided in the invention is small in particle size and high in stability, and can be stored for a long time without demulsification. Due to the small particle size, the paraffin series water-proofing agent provided in the invention can enter wood cells, a good waterproof effect is generated, and the hydrophobic performance and dimensional stability of woods are improved. The paraffin series wood water-proofing agent is prepared by taking the natural surfactants such as alkyl glycoside and Span as emulsifiers and taking solid paraffin and water as raw materials, and is non-toxic, harmless, environmentally friendly and low in price.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a waterproofing agent based on natural surfactants. Background technique [0002] Wood is an ecological and environmental material with excellent performance, but wood resource materials contain rich polar hydroxyl groups, and the volume will swell or shrink when moisture enters or precipitates. This kind of expansion and contraction is anisotropic, which will cause the instability of the geometric shape of the wood resource material; sometimes due to the anisotropic inhomogeneity of expansion and contraction, it will also cause defects such as cracking and warping of the wood resource material. In order to overcome the restrictions brought by swelling and shrinkage on the use of wood resource materials, various physical and chemical means are used to improve their dimensional stability, thereby prolonging the service life of wood and expanding its scope of application. [0003] Wood wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/50
Inventor 马尔妮王佳敏曹金珍汤少怀钟卉
Owner BEIJING FORESTRY UNIVERSITY
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