阅读说明：本技术 一种木地板褪色剂及褪色工艺 (Wood floor fading agent and fading process ) 是由 林德英 付志立 庄文勇 肖文林 朱德成 苏芳惠 于 2020-11-24 设计创作，主要内容包括：本发明提供一种木地板褪色剂,按体积分数计,包括60～95％的主剂,5～10％的乙醇或草酸,余量为水；所述主剂,按体积分数计,包括如下组分：去色剂70～78％、活性酶助剂0.5～1.2％、渗透剂6～20％、表面活性剂3～5％、水性防裂剂6～9％。通过在主剂中添加去色剂作为主要褪色成分,在满足漂白能力的情况下避免了大量使用氨水和双氧水,极大地提高了安全性和环保性,并添加能促进褪色效率的活性酶助剂、能提高褪色剂渗透力的渗透剂、作用于板材表层的表面活性剂和防止板材发裂的水性防裂剂,从而大幅地提升了褪色剂的褪色能力。(The invention provides a wood floor fading agent which comprises 60-95% of a main agent, 5-10% of ethanol or oxalic acid and the balance of water in percentage by volume; the main agent comprises the following components in percentage by volume: 70-78% of a decolorizer, 0.5-1.2% of an active enzyme auxiliary agent, 6-20% of a penetrating agent, 3-5% of a surfactant and 6-9% of a water-based anti-cracking agent. The decolorizing agent is added into the main agent as a main fading component, so that a large amount of ammonia water and hydrogen peroxide are avoided under the condition of meeting the bleaching capacity, the safety and the environmental protection are greatly improved, and an active enzyme auxiliary agent capable of promoting the fading efficiency, a penetrating agent capable of improving the penetrability of the decolorizing agent, a surfactant acting on the surface layer of the board and an aqueous anti-cracking agent for preventing the board from cracking are added, so that the fading capacity of the decolorizing agent is greatly improved.)

1. The wood floor fading agent is characterized by comprising 60-95% of a main agent, 5-10% of ethanol or oxalic acid and the balance of water in percentage by volume;

the main agent comprises the following components in percentage by volume: 70-78% of a decolorizer, 0.5-1.2% of an active enzyme auxiliary agent, 6-20% of a penetrating agent, 3-5% of a surfactant and 6-9% of a water-based anti-cracking agent.

2. The wood floor fading agent according to claim 1, wherein the component of the fading agent is sodium percarbonate or sodium perborate; the weight ratio of the sodium percarbonate or the sodium perborate in 1000ml of solution is 20-40 g.

3. The wood floor fading agent of claim 1, wherein the active enzyme adjuvant comprises the components of oxidase or peroxidase; the weight ratio of the oxidase or the peroxidase in 1000ml of solution is 5-8 g.

4. The wood flooring depigmenting agent according to claim 1, wherein the surfactant is sodium alkyl sulfonate or sodium lignin sulfonate.

5. The wood floor depigmenting agent according to claim 1, wherein the aqueous anti-cracking agent comprises the following components: 28-38 parts of pine oil emulsion or palm oil emulsion, 20-32 parts of polyurethane modified acrylic emulsion, 6-13 parts of nano silica sol and 20-25 parts of water.

6. A fading process is applied to wood floors and is characterized by comprising the following steps:

s1: preparing the wood flooring color fading agent according to any one of claims 1 to 5;

s2: uniformly coating the wood floor color fading agent on the wood floor;

s3: stacking the plurality of wood floors subjected to the step S2;

s4: curing the stacked wood floors;

s5: and drying the wood floor after the cultivation.

7. The wood floor fading agent according to claim 6, wherein in said step S2, the coating weight of the wood floor fading agent is 25-30 g per square meter.

8. The wood flooring color fading agent according to claim 6, wherein the stacked wood flooring is cured at normal temperature for 24 hours in the step S4.

9. The wood floor color fading agent according to claim 6, wherein in the step S5, the wood floor is dried to have a water content of 8-10% by means of steam drying or infrared drying.

10. The wood flooring depigmenting agent according to claim 9, wherein the temperature of the steam drying is 50 ± 5 ℃.

Technical Field

The invention relates to the field of wood floor manufacturing, in particular to a wood floor fading agent and a fading process.

Background

The wood floor is usually processed by natural wood boards such as red oak, black walnut, fraxinus mandshurica and the like, and the natural wood boards have the characteristics that: the color of the wood board is different between a plurality of boards of the same tree species and even on the same board, so that the color of the wood board is required to be restored to be consistent.

In the wood floor manufacturing industry, the most common fading mode is to adopt ammonia water and hydrogen peroxide to mix according to a certain proportion, and then coat and bleach dark wood. The bleaching effect of the fading mode is general, the bleaching effect is high in volatility in the production process, a production workshop can be polluted, the health of workers is damaged, the produced product does not meet the environmental protection standard due to residual ammonia exceeding the standard, and the wood floor is easy to oxidize and discolor along with the time lapse, so that the defect of poor color difference of the wood floor is caused.

Disclosure of Invention

The invention aims to provide a wood floor fading agent to overcome the defects of poor bleaching effect and strong pollution in the prior art.

The technical scheme adopted for solving the technical problem is that the wood floor fading agent comprises 60-95% of a main agent, 5-10% of ethanol or oxalic acid and the balance of water in percentage by volume; the main agent comprises the following components in percentage by volume: 70-78% of a decolorizer, 0.5-1.2% of an active enzyme auxiliary agent, 6-20% of a penetrating agent, 3-5% of a surfactant and 6-9% of a water-based anti-cracking agent.

According to the wood floor fading agent provided by the invention, the main agent is added with the decolorizing agent as a main fading component, so that a large amount of ammonia water and hydrogen peroxide are avoided under the condition of meeting the bleaching capability, the safety and the environmental protection are greatly improved, and the active enzyme auxiliary agent capable of promoting the fading efficiency, the penetrating agent capable of improving the permeability of the fading agent, the surfactant acting on the surface layer of the board and the aqueous anti-cracking agent capable of preventing the board from cracking are added, so that the fading capability of the fading agent is greatly improved.

In some embodiments, the component of the color-removing agent is sodium percarbonate or sodium perborate; the weight ratio of the sodium percarbonate or the sodium perborate in 1000ml of solution is 20-40 g.

In some embodiments, the component of the co-enzyme is an oxidase or peroxidase; the weight ratio of the oxidase or the peroxidase in 1000ml of solution is 5-8 g.

In some embodiments, the surfactant is sodium alkyl sulfonate or sodium lignosulfonate.

In some embodiments, the aqueous anti-cracking agent comprises the following components: 28-38 parts of pine oil emulsion or palm oil emulsion, 20-32 parts of polyurethane modified acrylic emulsion, 6-13 parts of nano silica sol and 20-25 parts of water.

The invention also provides a fading process, which comprises the following steps: s1: preparing the wood floor color fading agent as described above; s2: uniformly coating the wood floor color fading agent on the wood floor; s3: stacking the plurality of wood floors subjected to the step S2; s4: curing the stacked wood floors; s5: and drying the wood floor after the cultivation.

In some embodiments, in said step S2, the wood floor color fading agent is applied in an amount of 25 to 30 grams per square meter.

In some embodiments, in the step S4, the stacked wood flooring is cured at normal temperature for 24 hours.

In some embodiments, in the step S5, the wood floor is dried to a moisture content of 8-10% by means of steam drying or infrared drying.

In some embodiments, the temperature of the steam drying is 50 ± 5 ℃.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic flow diagram of a fade process according to an embodiment of the invention.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

The wood floor fading agent provided by the invention comprises 60-95% of a main agent, 5-10% of ethanol or oxalic acid and the balance of water by volume fraction. Wherein, in the main agent, the following components are included according to volume fraction: 70-78% of a decolorizer, 0.5-1.2% of an active enzyme auxiliary agent, 12-20% of a penetrating agent, 3-5% of a surfactant and 6-9% of a water-based anti-cracking agent.

The decolorizing agent is added into the main agent as a main fading component, so that a large amount of ammonia water and hydrogen peroxide are avoided under the condition of meeting the bleaching capacity, the safety and the environmental protection are greatly improved, and an active enzyme auxiliary agent capable of promoting the fading efficiency, a penetrating agent capable of improving the penetrability of the decolorizing agent, a surfactant acting on the surface layer of the board and an aqueous anti-cracking agent for preventing the board from cracking are added, so that the fading capacity of the decolorizing agent is greatly improved.

Specifically, the decolorizer is a component sodium percarbonate or sodium perborate. For example, sodium percarbonate has the characteristics of no toxicity and no odor, and the aqueous solution of the sodium percarbonate is alkaline and is easily decomposed into sodium carbonate and hydrogen peroxide, so that the sodium percarbonate has a bleaching effect. Wherein the weight ratio of the sodium percarbonate or the sodium perborate in 1000ml of solution is 20-40 g, such as 20g, 25g, 30g, 38g, 40g and the like.

The active enzyme adjuvant is composed of oxidase or peroxidase, which catalyzes the bleaching effect, such as laccase and horseradish peroxidase. Wherein, the weight ratio of the oxidase or the peroxidase in 1000ml of solution is 5-8 g, such as 5g, 6g, 7g, 8g, etc.

The penetrant (also called as permeation aid) is selected from commercially available wood penetrant to improve the permeation effect of the color fading agent in the wood fiber.

In order to improve the bleaching effect, the color fading agent is also added with a surfactant. The surfactant can be alkyl sodium sulfonate or sodium lignosulfonate. The weight ratio of the alkyl sodium sulfonate or the sodium lignosulfonate in 1000ml of solution is 0.5-1.8 g, such as 0.5g, 1.0g, 1.5g, 1.8g and the like.

The water-based anti-cracking agent is used for preventing wood from drying and cracking and comprises the following components: 28-38 parts of pine oil emulsion or palm oil emulsion, 20-32 parts of polyurethane modified acrylic emulsion, 6-13 parts of nano silica sol and 20-25 parts of water. The water-based anti-cracking agent has better affinity to the surface of wood, and takes the pine oil emulsion and the polyurethane modified acrylic emulsion as main materials, and the nano silica sol is added, so that the formed anti-cracking coating has excellent stability, and the cracking and oxidation of the board can be effectively prevented.

When the reddish wood board needs to be subjected to fading treatment, ethanol is selected as the auxiliary agent, and the addition amount of the ethanol is 5-10%, such as 5%, 8%, 10% and the like.

When the black wood board needs to be subjected to fading treatment, oxalic acid is selected as the auxiliary agent, and the addition amount of the oxalic acid is 5-10%, such as 5%, 7%, 10% and the like.

The present invention will be further described with reference to the following examples.

Example one

The wood floor fading agent comprises 60% of main agent, 5% of ethanol or oxalic acid and the balance of water by volume fraction. The main agent comprises the following components in percentage by volume: 70% of a decolorizer, 0.5% of an active enzyme auxiliary agent, 19.5% of a penetrating agent, 3% of a surfactant and 7% of a water-based anti-cracking agent.

Example two

A wood floor fading agent comprises 75% of a main agent, 7% of ethanol or oxalic acid and the balance of water in percentage by volume. The main agent comprises the following components in percentage by volume: 75% of a decolorizer, 1% of an active enzyme auxiliary agent, 13% of a penetrating agent, 4% of a surfactant and 7% of a water-based anti-cracking agent.

EXAMPLE III

The wood floor fading agent comprises 90% of main agent, 9% of ethanol or oxalic acid and the balance of water by volume fraction. The main agent comprises the following components in percentage by volume: 78% of a decolorizer, 1.2% of an active enzyme auxiliary agent, 8.8% of a penetrating agent, 4% of a surfactant and 8% of a water-based anti-cracking agent.

Example four

When the wood board needs to be faded, the volume fractions of the components are shown as follows:

therefore, the fading degree of the fading agent is wide, the effect is stable and durable after fading, and the fading agent is not easy to discolor.

EXAMPLE five

When the wood board needs to be faded black, the volume fractions of the components are shown as follows:

therefore, the fading degree of the fading agent is wide, the effect is stable and durable after fading, and the fading agent is not easy to discolor.

EXAMPLE six

The invention also provides a fading process applied to the wood floor, which sequentially comprises the following steps:

s1: mixing the main agent and the auxiliary agent to prepare the wood floor fading agent;

s2: uniformly coating the wood floor color fading agent on the wood floor, wherein the coating weight is 25-30 g per square meter;

s3: stacking a plurality of wood floors, enabling the wood floors to be attached to each other face to face, and stacking and compacting the wood floors;

s4: preserving the stacked wood floors for 24 hours at normal temperature;

s5: drying the wood floor after the cultivation; conveying by a conveying belt with the diameter of more than or equal to 12m, advancing at the speed of 1.5m/s, and drying by steam at the temperature of 50 +/-5 ℃ or infrared drying until the water content is 8-10%.

The wood floor processed by the process has the advantages of smooth plate opening, stable internal structure, uniform and consistent surface color of the faded plate surface, extremely small residual amount of the fading agent and composite environmental protection standard.

While the present invention has been described with reference to the exemplary embodiments described above, it is understood that the terms used are words of description and illustration, rather than words of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.