CN104647509A - Composite wood flame retardant containing phosphorus, nitrogen and boron and treatment process thereof - Google Patents
Composite wood flame retardant containing phosphorus, nitrogen and boron and treatment process thereof Download PDFInfo
- Publication number
- CN104647509A CN104647509A CN201310590245.XA CN201310590245A CN104647509A CN 104647509 A CN104647509 A CN 104647509A CN 201310590245 A CN201310590245 A CN 201310590245A CN 104647509 A CN104647509 A CN 104647509A
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- CN
- China
- Prior art keywords
- fire retardant
- wood
- phosphorus
- flame retardant
- composite type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K2240/00—Purpose of the treatment
- B27K2240/30—Fireproofing
Abstract
The invention discloses a composite wood flame retardant containing phosphorus, nitrogen and boron and a treatment process thereof. The composite wood flame retardant includes following components, by mass: 15-40% of phosphoric acid, 10-30% of dicyandiamide, 10-30% of ammonium polyphosphate, 5-10% of a boron-containing compound, 2-10% of silicon dioxide sol, 2-5% of sodium molybdate, 0.5-3% of sodium benzenesulfonate and 0.1-1% of pentaerythritol. The composite wood flame retardant, compared with a wood flame retardant in the prior art, is excellent in comprehensive performance. Wood treated by the composite wood flame retardant can reach an oxygen index being more than 60% and a smoke density being less than 25%, so that the composite wood flame retardant is excellent in flame retarding and smoke inhibiting, is excellent in anti-loss performance, is simple in the treatment process, is easy to product industrially, is high in impregnation depth in wood, and is stable and durable in flame retarding performance.
Description
Technical field
The present invention relates to wood fire retardant technical field, specifically a kind of phosphorus-nitrogen containing boron composite type wood fire retardant and treatment process thereof.
Background technology
At present, wood fire retardant is of a great variety, mainly contains by its effective ignition-proof element: the compound containing phosphorus, nitrogen, boron and halogen or the fire retardant of mixture.Because halogen flame at high temperature will produce pernicious gas, harmful effect is produced to human body and environment, is prohibitted the use gradually at present; Phosphorous, nitrogen, boron element fire retardant is then the main body of current wooden fire retardant.
Along with the development and progression of society, people to the requirement of wooden fire retardant from initial only lay particular emphasis on fire-retardant itself, fire-retardant to emphasis, be fuming, the omnibearing combination property such as wood property, environmental characteristics, additional properties and economy, this makes the development and production difficulty of wooden fire retardant new varieties increasing; Secondly, existing wooden fire retardant is adopt the mode process timber soaked to reach flame retardant effect substantially, often there is immersion timber deep inadequate, carrying drug ratio is not high, only have flame retardant effect at wood surface, and after top layer is destroyed, its flame retardant effect will disappear immediately; Moreover, the problem that existing wooden fire retardant substantially all exists migration and separates out.
Summary of the invention
In view of the deficiency that prior art exists, the invention provides a kind of Halogen, press down cigarette, environmental protection, the phosphorus-nitrogen containing boron composite type wood fire retardant of efficient and high comprehensive performance and treatment process thereof.
The technical solution adopted for the present invention to solve the technical problems is: phosphorus-nitrogen containing boron composite type wood fire retardant, and its component by mass percent proportioning is: phosphatase 11 5% ~ 40%, dicyandiamide 10% ~ 30%, APP 10% ~ 30%, boron-containing compound 5% ~ 10%, silicon dioxide gel 2% ~ 10%, sodium molybdate 2% ~ 5%, benzene sulfonic acid sodium salt 0.5% ~ 3%, pentaerythrite 0.1% ~ 1%.
The mass percent concentration of described phosphoric acid is 70% ~ 80%.
Described boron-containing compound is the mixture of borax and boric acid 1:1 in mass ratio.
The content of the silica of described silicon dioxide gel is 20 ~ 30wt%.
The preparation method of phosphorus-nitrogen containing boron composite type wood fire retardant of the present invention is: content takes each component by mass percentage, adds in agitator and fully mixes, and after drying, pulverizing, drying, obtains the present invention.
The processing step adopting phosphorus-nitrogen containing boron composite type wood fire retardant of the present invention to carry out flame treatment to timber is as follows:
(1), by pending drying of wood process, its moisture content≤12% is made;
(2), by wood fire retardant of the present invention adding water and being mixed with (quality) concentration is 15% ~ 20% fire resistant fluid, and is heated to 50 DEG C ~ 80 DEG C, keeps 2 ~ 4 hours, makes it be dissolved as clear solution completely;
(3), by dried timber load in high-pressure impregnation tank, after building lid, by high-pressure impregnation tank suction to 0.08MPa ~ 0.09MPa, keep 30 ~ 60 minutes, in high-pressure impregnation tank, then fill the fire resistant fluid of step (2), removal vacuum, slowly be forced into 1.2 ~ 1.4MPa, and keep 2 ~ 4 hours, release, discharge fire resistant fluid, then high-pressure impregnation tank is evacuated to 0.08MPa ~ 0.09MPa again, in maintenance after 10 ~ 30 minutes, remove vacuum, take out timber;
(4), by the drying of wood after impregnation process to moisture content≤12%, wood treated with fire retardants is obtained.
The invention has the beneficial effects as follows, compared with prior art, phosphorus-nitrogen containing boron composite type wood fire retardant of the present invention has excellent combination property, the oxygen index (OI) of the timber after its flame treatment can reach more than 60%, and smoke density, below 25%, thus has good fire-retardant, smoke suppressing effect, and leach resistance is good, its treatment process is simple and be easy to suitability for industrialized production, and large to the Impregnation depth of timber, and fire resistance is stable, lasting.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.
A kind of phosphorus-nitrogen containing boron composite type wood fire retardant, its component by mass percent proportioning is: phosphoric acid 35%, dicyandiamide 20%, APP 20%, boron-containing compound 10%, silicon dioxide gel 8%, sodium molybdate 4%, benzene sulfonic acid sodium salt 2%, pentaerythrite 1%.Wherein, the mass percent concentration of described phosphoric acid is 70% ~ 80%; Described boron-containing compound is the mixture of borax and boric acid 1:1 in mass ratio; The content of the silica of described silicon dioxide gel is 20 ~ 30wt%.
Preparation method: content takes each component by mass percentage, adds in agitator and fully mixes, after drying, pulverizing, drying, obtains the present invention.
The processing step adopting phosphorus-nitrogen containing boron composite type wood fire retardant of the present invention to carry out flame treatment to timber is as follows:
(1), by pending drying of wood process, its moisture content≤12% is made;
(2), by wood fire retardant of the present invention adding water and being mixed with (quality) concentration is 15% ~ 20% fire resistant fluid, and is heated to 50 DEG C ~ 80 DEG C, keeps 2 ~ 4 hours, makes it be dissolved as clear solution completely;
(3), by dried timber load in high-pressure impregnation tank, after building lid, by high-pressure impregnation tank suction to 0.08MPa ~ 0.09MPa, keep 30 ~ 60 minutes, in high-pressure impregnation tank, then fill the fire resistant fluid of step (2), removal vacuum, slowly be forced into 1.2 ~ 1.4MPa, and keep 2 ~ 4 hours, release, discharge fire resistant fluid, then high-pressure impregnation tank is evacuated to 0.08MPa ~ 0.09MPa again, in maintenance after 10 ~ 30 minutes, remove vacuum, take out timber;
(4), by the drying of wood after impregnation process to moisture content≤12%, wood treated with fire retardants is obtained.
Claims (6)
1. a phosphorus-nitrogen containing boron composite type wood fire retardant, it is characterized in that, its component by mass percent proportioning is: phosphatase 11 5% ~ 40%, dicyandiamide 10% ~ 30%, APP 10% ~ 30%, boron-containing compound 5% ~ 10%, silicon dioxide gel 2% ~ 10%, sodium molybdate 2% ~ 5%, benzene sulfonic acid sodium salt 0.5% ~ 3%, pentaerythrite 0.1% ~ 1%.
2. phosphorus-nitrogen containing boron composite type wood fire retardant according to claim 1, is characterized in that, the mass percent concentration of described phosphoric acid is 70% ~ 80%.
3. phosphorus-nitrogen containing boron composite type wood fire retardant according to claim 1, is characterized in that, described boron-containing compound is the mixture of borax and boric acid 1:1 in mass ratio.
4. phosphorus-nitrogen containing boron composite type wood fire retardant according to claim 1, is characterized in that, the content of the silica of described silicon dioxide gel is 20 ~ 30wt%.
5. the preparation method of phosphorus-nitrogen containing boron composite type wood fire retardant according to claim 1, it is characterized in that, comprise the following steps: content takes each component by mass percentage, adds in agitator and fully mixes, after drying, pulverizing, drying, obtain the present invention.
6. phosphorus-nitrogen containing boron composite type wood fire retardant according to claim 1 carries out fire retardant treatment process to timber, it is characterized in that, comprises the following steps:
(1), by pending drying of wood process, its moisture content≤12% is made;
(2), by wood fire retardant of the present invention adding water and being mixed with (quality) concentration is 15% ~ 20% fire resistant fluid, and is heated to 50 DEG C ~ 80 DEG C, keeps 2 ~ 4 hours, makes it be dissolved as clear solution completely;
(3), by dried timber load in high-pressure impregnation tank, after building lid, by high-pressure impregnation tank suction to 0.08MPa ~ 0.09MPa, keep 30 ~ 60 minutes, in high-pressure impregnation tank, then fill the fire resistant fluid of step (2), removal vacuum, slowly be forced into 1.2 ~ 1.4MPa, and keep 2 ~ 4 hours, release, discharge fire resistant fluid, then high-pressure impregnation tank is evacuated to 0.08MPa ~ 0.09MPa again, in maintenance after 10 ~ 30 minutes, remove vacuum, take out timber;
(4), by the drying of wood after impregnation process to moisture content≤12%, wood treated with fire retardants is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310590245.XA CN104647509A (en) | 2013-11-22 | 2013-11-22 | Composite wood flame retardant containing phosphorus, nitrogen and boron and treatment process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310590245.XA CN104647509A (en) | 2013-11-22 | 2013-11-22 | Composite wood flame retardant containing phosphorus, nitrogen and boron and treatment process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104647509A true CN104647509A (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310590245.XA Pending CN104647509A (en) | 2013-11-22 | 2013-11-22 | Composite wood flame retardant containing phosphorus, nitrogen and boron and treatment process thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN104647509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265093A (en) * | 2020-10-26 | 2021-01-26 | 广西壮族自治区林业科学研究院 | Compound wood fire retardant |
| CN115229926A (en) * | 2022-08-02 | 2022-10-25 | 北京林业大学 | Organic-inorganic hybrid boron-nitrogen-phosphorus ternary flame-retardant shaving board and preparation method thereof |
-
2013
- 2013-11-22 CN CN201310590245.XA patent/CN104647509A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265093A (en) * | 2020-10-26 | 2021-01-26 | 广西壮族自治区林业科学研究院 | Compound wood fire retardant |
| CN115229926A (en) * | 2022-08-02 | 2022-10-25 | 北京林业大学 | Organic-inorganic hybrid boron-nitrogen-phosphorus ternary flame-retardant shaving board and preparation method thereof |
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Application publication date: 20150527 |