阅读说明：本技术 阻燃木材用防腐剂的制备工艺 (Preparation process of preservative for flame-retardant wood ) 是由 林雪 于 2018-06-12 设计创作，主要内容包括：本发明公开的是阻燃木材用防腐剂的制备工艺,解决了现有技术中防腐剂在潮湿环境中会极大地影响其防腐性能,降低使用寿命的问题。本发明包括(1)将氧化铜2-4份、双氰铵10-12份、磷酸氢二铵9-11份和硫酸铵42-50份混合均匀,在50～80℃条件下搅拌2h以上；(2)冷却到40℃以下后,加入硼酸12-14份、八硼酸二钠2-4份、氟化钠6-8份和羧甲基纤维素1-3份,混合均匀,自然冷却至室温即可。本发明能更好地达到抑菌、防虫的目的,进而有效延长使用寿命,同时,本发明的配方中并没有采用含有砷、铬等物质,不具有毒性,环保效果极佳。(The invention discloses a preparation process of a preservative for flame-retardant wood, which solves the problems that the preservative in the prior art can greatly influence the corrosion resistance and reduce the service life in a humid environment. The method comprises (1) uniformly mixing 2-4 parts of copper oxide, 10-12 parts of dicyandiamide, 9-11 parts of diammonium hydrogen phosphate and 42-50 parts of ammonium sulfate, and stirring at 50-80 ℃ for more than 2 hours; (2) cooling to below 40 ℃, adding 12-14 parts of boric acid, 2-4 parts of disodium octaborate, 6-8 parts of sodium fluoride and 1-3 parts of carboxymethyl cellulose, uniformly mixing, and naturally cooling to room temperature. The invention can better achieve the aims of bacteriostasis and insect prevention, further effectively prolong the service life, and meanwhile, substances containing arsenic, chromium and the like are not adopted in the formula of the invention, so that the invention has no toxicity and excellent environmental protection effect.)

1. The preparation process of the preservative for the flame-retardant wood is characterized by comprising the following steps of:

(1) uniformly mixing 2-4 parts of copper oxide, 10-12 parts of dicyandiamide, 9-11 parts of diammonium phosphate and 42-50 parts of ammonium sulfate, and stirring at 50-80 ℃ for more than 2 hours;

(2) cooling to below 40 ℃, adding 12-14 parts of boric acid, 2-4 parts of disodium octaborate, 6-8 parts of sodium fluoride and 1-3 parts of carboxymethyl cellulose, uniformly mixing, and naturally cooling to room temperature.

2. The preparation process of the preservative for flame-retardant wood according to claim 1, wherein the temperature in the step (1) is 60 ℃, and the stirring time is 2-3 hours.

3. The process for preparing the preservative for flame-retardant wood according to claim 1, wherein the cooling temperature in the step (2) is 30-35 ℃.

4. The process for preparing preservative for flame-retardant wood according to claim 1,

13 parts of boric acid, 3 parts of disodium octaborate, 11 parts of dicyandiamide, 8 parts of sodium fluoride, 9 parts of diammonium hydrogen phosphate, 48 parts of ammonium sulfate, 4 parts of copper oxide and 1 part of carboxymethyl cellulose.

5. The process for preparing preservative for flame-retardant wood according to claim 1,

12 parts of boric acid, 4 parts of disodium octaborate, 12 parts of dicyandiamide, 6 parts of sodium fluoride, 10 parts of diammonium hydrogen phosphate, 42 parts of ammonium sulfate, 2 parts of copper oxide and 3 parts of carboxymethyl cellulose.

Technical Field

The invention relates to a preparation process of a preservative, in particular to a preparation process of a preservative for flame-retardant wood.

Background

Wood is one of the important raw materials for national construction and daily necessities of people, and is used for building materials, industrial materials and the like. Along with the improvement of living standard of people, the demand of wood is increasing. The wood is a natural organic material, has obvious biological characteristics and is easy to be invaded by organisms such as bacteria, insects, marine borers and the like. The long-term use of wood, particularly for long-term outdoor use, is greatly restricted.

Spoilage organisms cause the wood to decay, causing it to be destroyed. Before use, proper preservatives are selected according to different application environments, and appropriate treatment is carried out, so that the wood decay can be effectively delayed. Forest resources which can be harvested and used in China are very limited, and it is unrealistic to hope that a large amount of foreign exchange imported wood is used.

The wood is subjected to preservative treatment, the service life of the wood products is prolonged, and the method is one of important ways of saving the wood and protecting forest resources. At present, the wood preservatives used in various countries in the world are mainly CCA preservatives, which contain arsenic, chromium and other substances, have toxicity, are not beneficial to environmental protection, and are strictly limited in use in some countries.

And the wood is easy to warp, crack, deform, perishables, mildews and have short service life in the using process due to the anisotropy of the wood, and particularly, the wood is quick-growing, so that the defects of the wood are more serious, and the using way of the wood is limited. Therefore, many scientific research activities for functional improvement of wood have been carried out in order to improve the dimensional stability and prolong the service life of wood.

At present, the cost reasons are that: inorganic salt fire retardant is mainly used, so that moisture is easy to absorb, the fire retardant is easy to seep out to the surface of the wood, and particularly in southern areas, due to the moisture and the seepage of the fire retardant, the multiple effects of fire retardation, mildew prevention, corrosion prevention and insect prevention are difficult to achieve, so that the durability of the treated wood is reduced.

Disclosure of Invention

The invention aims to solve the problems that the preservative in the prior art can greatly influence the preservative performance in a humid environment and reduce the service life; provides a preparation process of the preservative for the flame-retardant wood, which solves the problems.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the preparation process of the preservative for the flame-retardant wood comprises the following steps:

(1) uniformly mixing 2-4 parts of copper oxide, 10-12 parts of dicyandiamide, 9-11 parts of diammonium phosphate and 42-50 parts of ammonium sulfate, and stirring at 50-80 ℃ for more than 2 hours;

(2) cooling to below 40 ℃, adding 12-14 parts of boric acid, 2-4 parts of disodium octaborate, 6-8 parts of sodium fluoride and 1-3 parts of carboxymethyl cellulose, uniformly mixing, and naturally cooling to room temperature.

When the preservative composed of the components and the proportion is applied to wood, the purposes of bacteriostasis and insect prevention can be better achieved, the service life is effectively prolonged, and the effect is more remarkable.

In addition, substances containing arsenic, chromium and the like are not adopted in the formula, so that the environment-friendly paint has no toxicity and excellent environment-friendly effect.

Further, the temperature in the step (1) is 60 ℃, and the stirring time is 2-3 h.

Further, the cooling temperature in the step (2) is 30-35 ℃.

Further, the feed additive comprises the following substances in parts by weight:

13 parts of boric acid, 3 parts of disodium octaborate, 11 parts of dicyandiamide, 8 parts of sodium fluoride, 9 parts of diammonium hydrogen phosphate, 48 parts of ammonium sulfate, 4 parts of copper oxide and 1 part of carboxymethyl cellulose.

Further, the feed additive comprises the following substances in parts by weight:

12 parts of boric acid, 4 parts of disodium octaborate, 12 parts of dicyandiamide, 6 parts of sodium fluoride, 10 parts of diammonium hydrogen phosphate, 42 parts of ammonium sulfate, 2 parts of copper oxide and 3 parts of carboxymethyl cellulose.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. when the preservative prepared from the components and the proportion is applied to wood, the purposes of bacteriostasis and insect prevention can be better achieved, the service life is effectively prolonged, and the effect is more obvious;

2. the formula of the invention does not adopt substances containing arsenic, chromium and the like, has no toxicity and has excellent environmental protection effect.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.