CN106625946A

CN106625946A - Wood modifying agent and production method thereof

Info

Publication number: CN106625946A
Application number: CN201610730552.7A
Authority: CN
Inventors: 唐荣燕; 王博
Original assignee: Nanjing Bojun New Material Co Ltd
Current assignee: Nanjing Bojun New Material Co Ltd
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2017-05-10

Abstract

The invention provides a wood modifying agent and a production method thereof. The wood modifying agent comprises the following components in parts by weight: 20-60 parts of phosphoric acid, 10-30 parts of urea, 2-10 parts of hexamine, 0.1-0.3 part of catalyst, and 2-10 parts of butane tetracarboxylic acid. The produced wood modifying agent can prominently improve the wood strength and density, reduces the wood wet expansion performance and dry shrinkage performance, and meanwhile, is excellent in environmental protection and lower in cost.

Description

A kind of Wood modifier and its production method

Technical field：

The present invention relates to a kind of Wood modifier and its production method, belong to chemical industry preparation technique field.

Background technology：

Timber and wood quality as social and economic construction in the important means of production, be not only widely used in each in daily life Individual technical field, is also widely used for the industrial circles such as traffic, building, space flight, as the forest reserves are increasingly short in world wide Lack, particularly precious timber quantity increasingly falls sharply, and in recent years the substantial amounts of quick growing species of trees is extensively cultivated, to meet in global range Wood supply, carry out physically or chemically modification hence with fast growing wood, not only increase the added value of fast growing wood, also rise Arrived protection rare tree resource effect, in recent years, country energetically advocate plant the quick growing species of trees, but with natural forest phase Than, the quick growing species of trees, by productive life is short etc., factor is limited, and causes that early late wood is widely different, and arborescence is loose, and mechanical property is poor, Therefore limit application of the fast growing wood in life, due to timber be it is a kind of natural with porous macromolecular material, by The tubular units that different size, shape connect situation with difference are cross-linked and form, and with fluid-pervious, its is distinctive more Cavernous structure provides the foundation for Wooden modifying.Exactly this special structure provides foundation for Wooden modifying.Wooden modifying Refer to and PROCESS FOR TREATMENT is carried out to logs of wood using methods such as physics, chemistry and machineries so that density of wood, hardness, intensity, chi The physico-mechanical propertieses such as very little stability obtain good improvement.

But the polymer of existing Wood modifier formation is often weak with wood substrates interfacial interaction power, causes water Divide and microorganism can continue through interface gaps attack wood matrix, the degree for improving the durability of wood weakens；In addition, this Although a little Wood modifiers are capable of achieving to be bonded with wood substrates containing function key, often there is toxicity, and source it is narrow, Difficulty is prepared, therefore causes its expensive, limit application of such method in Wooden modifying.

The content of the invention：

The purpose of the present invention is to provide a kind of Wood modifier and its production method, the timber of production for above-mentioned problem Modifying agent can significantly improve the intensity and density of timber, reduce wet the rising property and drying shrinkage of timber, while its environment friendly is good, And cost is relatively low.

Above-mentioned purpose is realized by following technical scheme：

A kind of Wood modifier, including the weight of phosphoric acid, urea, hexa, catalyst, BTCA, each component Number is phosphoric acid 20-60 parts, urea 10-30 parts, hexa 2-10 parts, catalyst 0.1-0.3 parts, BTCA 2- 10 parts.

Described Wood modifier, described catalyst includes stannic chloride, copper sulphate, sodium chloride, iron chloride, aluminum sulfate, One or more kinds of combinations in boric acid and zinc chloride.

Described Wood modifier, described phosphoric acid, urea, hexa, catalyst, BTCA, each group The parts by weight for dividing are phosphoric acid 28-42 parts, urea 16-26 parts, hexa 4-8 parts, catalyst 0.1-0.3 parts, butane Tetrabasic carboxylic acid 4-8 parts.

Described Wood modifier, described phosphoric acid, urea, hexa, catalyst, BTCA, each group The parts by weight for dividing are 35 parts of phosphoric acid, 21 parts of urea, 6 parts of hexa, 0.2 part of catalyst, 6 parts of BTCA.

The production method of above-mentioned Wood modifier, the method comprises the steps：

（1）Phosphoric acid and agitating heating are added in a kettle.；

（2）When being heated to temperature and rising to 50～60 DEG C, urea is added in reactor, and stirred；

（3）Continue to heat, when temperature rises to 90～120 DEG C, catalyst is added in reactor, and is heated to temperature and rise to When 130～140 DEG C, stop heating；

（4）Question response kettle is naturally cooling to 60～80 DEG C, adds the water of material two volumes in reactor, stirs；

（5）Hexa, BTCA are added, is stirred, continue to be cooled to 30 ~ 40 DEG C, discharging is stored.

The production method of described Wood modifier, the speed of described stirring is 600-800 rev/min.

Beneficial effect：

Timber is modified after process using the Wood modifier of the present invention, the air-dry density of timber is by 0.30g/ before modified cm³Bring up to 0.63g/cm³, basic density is by original 0.21g/cm³, bring up to 0.47g/cm³, the bending strength of timber by 65MPa before transformation brings up to 87MPa, and parallel-to-grain compressive strength brings up to 56MPa by the 35MPa before transforming, and its water imbibition, Wet rising property, drying shrinkage are all with significantly reducing.

Specific embodiment：

Embodiment 1：

A kind of Wood modifier, including the weight of phosphoric acid, urea, hexa, catalyst, BTCA, each component Number is 20 parts of phosphoric acid, 30 parts of urea, 2 parts of hexa, 0.3 part of catalyst, 2 parts of BTCA.

（1）Phosphoric acid and agitating heating are added in a kettle.；

Embodiment 2：

The present embodiment is with the difference of embodiment 1：Wood modifier described in the present embodiment, described phosphoric acid, urine Element, hexa, catalyst, BTCA, the parts by weight of each component are 60 parts of phosphoric acid, 10 parts of urea, six methylenes 10 parts of urotropine, 0.1 part of catalyst, 10 parts of BTCA.

Embodiment 3：

The present embodiment is with the difference of embodiment 1：Wood modifier described in the present embodiment, described phosphoric acid, urine Element, hexa, catalyst, BTCA, the parts by weight of each component are 2 parts of phosphatase 24,26 parts of urea, six methylenes 4 parts of urotropine, 0.1 part of catalyst, 4 parts of BTCA.

Embodiment 4：

The present embodiment is with the difference of embodiment 1：Wood modifier described in the present embodiment, described phosphoric acid, urine Element, hexa, catalyst, BTCA, the parts by weight of each component are 28 parts of phosphoric acid, 16 parts of urea, six methylenes 8 parts of urotropine, 0.3 part of catalyst, 8 parts of BTCA.

Embodiment 5：

The present embodiment is with the difference of embodiment 1：Wood modifier described in the present embodiment, described phosphoric acid, urine Element, hexa, catalyst, BTCA, the parts by weight of each component are 35 parts of phosphoric acid, 21 parts of urea, six methylenes 6 parts of urotropine, 0.2 part of catalyst, 6 parts of BTCA.

Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also includes The technical scheme being made up of above technical characteristic equivalent.The unaccomplished matter of the present invention, belongs to those skilled in the art's Common knowledge.

Claims

1. a kind of Wood modifier, it is characterised in that including phosphoric acid, urea, hexa, catalyst, BTCA, The parts by weight of each component be phosphoric acid 20-60 parts, urea 10-30 parts, hexa 2-10 parts, catalyst 0.1-0.3 parts, BTCA 2-10 parts.

2. Wood modifier according to claim 1, it is characterised in that described catalyst includes stannic chloride, copper sulphate, Sodium chloride, iron chloride, aluminum sulfate, the one or more kinds of combinations in boric acid and zinc chloride.

3. Wood modifier according to claim 1, it is characterised in that described phosphoric acid, urea, hexa, Catalyst, BTCA, the parts by weight of each component are phosphoric acid 28-42 parts, urea 16-26 parts, hexa 4-8 Part, catalyst 0.1-0.3 parts, BTCA 4-8 parts.

4. Wood modifier according to claim 1, it is characterised in that described phosphoric acid, urea, hexa, Catalyst, BTCA, the parts by weight of each component are 35 parts of phosphoric acid, 21 parts of urea, 6 parts of hexa, catalyst 0.2 part, 6 parts of BTCA.

5. a kind of production method of above-mentioned Wood modifier, it is characterised in that the method comprises the steps：

（1）Phosphoric acid and agitating heating are added in a kettle.；

6. the production method of Wood modifier according to claim 5, the speed of described stirring is 600-800 rev/min Clock.