Moisture-proof and flame-retardant relief floor

Abstract

The present application belongs to the field of floor materials, more specifically a moisture-proof and flame-retardant relief floor. The outer layer of the PVC plate layer is provided with a flame-retardant layer, and the outer layer of the flame-retardant layer has a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive; the inner layer of the PVC plate layer is provided with a moisture-proof layer, and the other side of the moisture-proof layer has a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; the other side of the strength layer is a shock-absorbing layer. The flame-retardant layer prepared by the preparation process of the present application has good flame-retardant effect, and the moisture-proof layer prepared by the preparation process of the present application has good moisture-proof effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of floor materials. More particularly, it relates to a moisture-proof and flame-retardant relief floor. BACKGROUND

[0002] Most of the fires in China occur indoors, which can lead to disasters by igniting combustible materials. The decoration materials need to achieve a certain level of flame retardant performance to reduce the possibility of fire. The floor is a commonly used indoor decoration material, and its flame retardant performance is an important performance index. At the same time, the moisture resistance of the floor is also related to the quality of the floor. At present, the common floor base materials are mostly pressed by wood fiber, urea-formaldehyde resin or other adhesives, which have problems such as deformation when encountering water, poor water resistance, poor flame retardance, etc. When mopping or the weather is humid, the floor may warp, which can reduce the service life of the floor. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the shortcomings of the existing relief floor in moisture-proof and flame-retardant, and to provide a moisture-proof and flame-retardant relief floor.

[0004] The purpose of the present application is to provide a moisture-proof and flame-retardant relief floor to solve the problem of poor moisture-proof and flame-retardant of the existing relief floor.

[0005] The above-mentioned purpose of the present application is achieved by the following technical scheme:

[0006] A moisture-proof and flame-retardant relief floor comprises a PVC plate layer, characterized in that: an outer layer of the PVC plate layer is provided with a flame-retardant layer, and an outer layer of the flame-retardant layer is provided with a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive.

[0007] An inner layer of the PVC plate layer is provided with a moisture-proof layer, and another side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; another side of the strength layer is a shock-absorbing layer.

[0008] Preparation of the flame-retardant layer: 72-85% wood fiber, 8-12% basic magnesium carbonate, 6-9% phenolic resin, 2-3% ammonium chloride solution, 2-3% waterproof wood wax oil, and 1-3% solid paraffin are used as raw materials in terms of mass percentage; the basic magnesium carbonate and the phenolic resin are stirred and mixed uniformly, and then the ammonium chloride solution is added to obtain a mixture; the wood fiber is stirred, and the mixture is uniformly sprayed on the surface of the wood fiber; the waterproof wood wax oil and the solid paraffin are added, and hot pressing is performed at a temperature of 175-185℃.

[0009] The PVC plate layer is treated with flame retardant antimony white, and the addition amount of the flame retardant antimony white is 5-7% of the mass of the PVC plate layer.

[0010] Preparation of the moisture-proof layer: 82-90% wood fiber, 5-8% MDI adhesive, 3-6% waterproof wood wax oil, and 3-5% solid paraffin are used as raw materials, and hot pressing is performed at a pressure of 5.5-6.5 MPa for 120-150 s, and the hot pressing temperature is 135-145 DEG C.

[0011] The adhesive is polyvinyl formal; the thickness of the flame-retardant layer is 2-2.5 mm; the thickness of the moisture-proof layer is 2-2.5 mm; and the thickness of the moisture-proof and flame-retardant relief floor is 7-9 mm.

[0012] The alkali magnesium carbonate is used as a flame-retardant additive in the flame-retardant layer, which significantly improves the flame-retardant performance of the flame-retardant layer. Too much alkali magnesium carbonate can cause reaction with ammonium chloride and difficulty in curing. Preferably, the alkali magnesium carbonate is 10%, and the ammonium chloride solution is 2.5%.

[0013] The PVC plate layer is treated with flame retardant antimony white, and the addition amount of the flame retardant antimony white is 5-7% of the mass of the PVC plate layer. Within this range, the flame-retardant performance of the floor can be improved, and the cost can be controlled. When the addition amount of the flame retardant antimony white is higher than 7%, the flame-retardant effect does not increase obviously.

[0014] During the preparation of the moisture-proof layer, the moisture-proof performance of the moisture-proof layer first increases and then slightly decreases with the increase of the hot pressing time and the hot pressing temperature under the conditions of hot pressing at a pressure of 5.5-6.5 MPa for 120-150 s and a hot pressing temperature of 135-145 DEG C. On the one hand, the increase of the hot pressing time and the hot pressing temperature can block the internal hydrophobic channels, thereby improving the moisture-proof performance. On the other hand, too high hot pressing temperature can cause chemical reaction between the wood fiber and the MDI resin, which slightly reduces the moisture-proof performance and other performances. Preferably, hot pressing is performed at a pressure of 6 MPa for 135 s, and the hot pressing temperature is 140 DEG C.

[0015] The prepared moisture-proof and flame-retardant relief floor is detected by GB8624-2012, and the critical heat flux CHF (KW / m 2 ) of the floor is ≥22, the flame impingement height Fs (mm) of the surface flame within 20 s is ≤26, the edge flame impingement is ≤28, and the smoke production (%×min) is ≤67. The flame-retardant performance of the floor is excellent.

[0016] The moisture-proof performance test is performed by immersing 500 g of the floor in water for 6 days, and the mass change of the floor is observed. The mass change of the floor of the present application is small, which is ≤7.8 g.

[0017] The present application has the following beneficial effects:

[0018] The outer layer of the PVC plate layer is provided with a flame-retardant layer, and the outer layer of the flame-retardant layer is provided with a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive; the inner layer of the PVC plate layer is provided with a moisture-proof layer, and the other side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; and the other side of the strength layer is a shock-absorbing layer.

[0019] The flame-retardant layer prepared by the preparation process has good flame-retardant effect, and the moisture-proof layer prepared by the preparation process has good moisture-proof effect. 2 The critical heat flux CHF (KW / m2) of the floor is ≥22, the surface flame impingement of the flame tip height Fs (mm) within 20s is ≤26, the edge flame impingement is ≤28, and the smoke production (%×min) is ≤67. The flame-retardant performance of the floor is excellent. The floor has small quality change. 500g of the floor is soaked in water for 6 days to check the quality change of the floor, and the quality change of the floor is ≤7.8g. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] A moisture-proof and flame-retardant relief floor comprises a PVC plate layer, wherein the outer layer of the PVC plate layer is provided with a flame-retardant layer, and the outer layer of the flame-retardant layer is provided with a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive;

[0022] The inner layer of the PVC plate layer is provided with a moisture-proof layer, and the other side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; and the other side of the strength layer is a shock-absorbing layer.

[0023] The flame-retardant layer is prepared by using 73% of wood fiber, 12% of basic magnesium carbonate, 6% of phenolic resin, 3% of ammonium chloride solution, 3% of waterproof wood wax oil and 3% of solid paraffin as raw materials; the basic magnesium carbonate and the phenolic resin are uniformly stirred and mixed, and then the ammonium chloride solution is added to obtain a mixture; the wood fiber is stirred, and the mixture is uniformly sprayed on the surface of the wood fiber; the waterproof wood wax oil and the solid paraffin are added and hot-pressed at a temperature of 175℃.

[0024] The PVC plate layer is treated by a flame retardant antimony white, and the addition amount of the flame retardant antimony white is 7% of the mass of the PVC plate layer;

[0025] Preparation of the moisture-proof layer: 82% wood fiber, 8% MDI adhesive, 5% waterproof wood wax oil, and 5% solid paraffin were used as raw materials, and hot pressing was performed at a pressure of 5.5 MPa for 150 s and a hot pressing temperature of 135℃.

[0026] The adhesive was polyvinyl formal, the thickness of the flame-retardant layer was 2.5 mm, the thickness of the moisture-proof layer was 2 mm, and the thickness of the moisture-proof and flame-retardant relief floor was 9 mm.

[0027] The flame retardancy was tested according to GB8624-2012, the critical heat flux CHF (KW / m 2 ) of the floor was 17, the flame impingement height Fs (mm) of the surface flame within 20 s was 26, the edge flame impingement was 28, and the smoke production (%×min) was 67.

[0028] The moisture-proof performance test was performed by immersing 500 g of the floor in water for 6 days, and the mass change of the floor was observed. The mass change of the floor of the present application was small, which was 7.8 g.

[0029] Example 2

[0030] A moisture-proof and flame-retardant relief floor, comprising a PVC plate layer, characterized in that: an outer layer of the PVC plate layer is provided with a flame-retardant layer, and an outer layer of the flame-retardant layer is provided with a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive.

[0031] An inner layer of the PVC plate layer is provided with a moisture-proof layer, and another side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; another side of the strength layer is a shock-absorbing layer.

[0032] Preparation of the flame-retardant layer: 73% wood fiber, 10% basic magnesium carbonate, 9% phenolic resin, 2.5% ammonium chloride solution, 2.5% waterproof wood wax oil, and 3% solid paraffin were used as raw materials; the basic magnesium carbonate and the phenolic resin were stirred and mixed uniformly, and then the ammonium chloride solution was added to obtain a mixture; the wood fiber was stirred, and the mixture was uniformly sprayed on the surface of the wood fiber; the waterproof wood wax oil and the solid paraffin were added, and hot pressing was performed at a hot pressing temperature of 180℃.

[0033] The PVC plate layer was treated with flame retardant antimony white, and the addition amount of the flame retardant antimony white was 7% of the mass of the PVC plate layer.

[0034] Preparation of the moisture-proof layer: 82% wood fiber, 8% MDI adhesive, 5% waterproof wood wax oil, and 5% solid paraffin were used as raw materials, and hot pressing was performed at a pressure of 5.5 MPa for 150 s and a hot pressing temperature of 135℃.

[0035] The adhesive is polyvinyl formal; the thickness of the flame-retardant layer is 2.5 mm; the thickness of the moisture-proof layer is 2 mm; and the thickness of the moisture-proof and flame-retardant relief floor is 9 mm.

[0036] The flame retardancy is detected by GB8624-2012, the critical heat flux CHF (KW / m 2 ) of the floor is 21, the surface flame impingement of the flame tip height Fs (mm) within 20 s is 24, the edge flame impingement is 25, and the smoke production (%×min) is 63.

[0037] The moisture-proof performance test is that 500 g of the floor is soaked in water for 6 days, and the mass change of the floor is observed; the mass change of the floor of the application is small, which is 7.5 g.

[0038] Example 3

[0039] A moisture-proof and flame-retardant relief floor comprises a PVC plate layer, characterized in that: an outer layer of the PVC plate layer is provided with a flame-retardant layer, and an outer layer of the flame-retardant layer is provided with a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive.

[0040] An inner layer of the PVC plate layer is provided with a moisture-proof layer, and another side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; and another side of the strength layer is a shock-absorbing layer.

[0041] The flame-retardant layer is prepared by using, in mass percentage, 73% of wood fiber, 10% of basic magnesium carbonate, 9% of phenolic resin, 2.5% of ammonium chloride solution, 2.8% of waterproof wood wax oil, and 2.7% of solid paraffin as raw materials; the basic magnesium carbonate and the phenolic resin are uniformly stirred and mixed, and then the ammonium chloride solution is added to obtain a mixture; the wood fiber is stirred, and the mixture is uniformly sprayed on the surface of the wood fiber; the waterproof wood wax oil and the solid paraffin are added, and hot pressing is performed at a hot pressing temperature of 180℃.

[0042] The PVC plate layer is treated by a flame retardant antimony white, and the addition amount of the flame retardant antimony white is 7% of the mass of the PVC plate layer.

[0043] The moisture-proof layer is prepared by using, in mass percentage, 88% of wood fiber, 6% of MDI adhesive, 3% of waterproof wood wax oil, and 3% of solid paraffin as raw materials, hot pressing at a pressure of 6 MPa for 135 s, and hot pressing at a temperature of 140℃.

[0044] The adhesive is polyvinyl formal; the thickness of the flame-retardant layer is 2.5 mm; the thickness of the moisture-proof layer is 2 mm; and the thickness of the moisture-proof and flame-retardant relief floor is 9 mm.

[0045] The flame retardance is detected by GB8624-2012, the critical heat flux CHF (KW / m 2 ) of the floor is 22, the surface flame impingement of the flame tip height Fs (mm) within 20s is 23, the edge flame impingement is 26, and the smoke production (%×min) is 62.

[0046] The moisture-proof performance test is that 500g of the floor is soaked in water for 6 days to check the mass change of the floor, and the mass change of the floor of the application is small, which is 6.5g.

[0047] Comparative Example 1

[0048] A moisture-proof and flame-retardant relief floor, comprising a PVC plate layer, characterized in that: an outer layer of the PVC plate layer is provided with a flame-retardant layer, and the outer layer of the flame-retardant layer is provided with a relief layer; the PVC plate layer and the flame-retardant layer are fixed by an adhesive, and the flame-retardant layer and the relief layer are fixed by an adhesive.

[0049] An inner layer of the PVC plate layer is provided with a moisture-proof layer, and the other side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; the other side of the strength layer is a shock-absorbing layer.

[0050] The flame-retardant layer is prepared by using 60% of wood fiber, 20% of basic magnesium carbonate, 10% of phenolic resin, 4% of ammonium chloride solution, 3% of waterproof wood wax oil, and 3% of solid paraffin as raw materials; the basic magnesium carbonate and the phenolic resin are stirred and mixed uniformly, and then the ammonium chloride solution is added to obtain a mixture; the wood fiber is stirred, and the mixture is uniformly sprayed on the surface of the wood fiber; the waterproof wood wax oil and the solid paraffin are added and hot-pressed at a hot-pressing temperature of 200℃.

[0051] The PVC plate layer is treated by flame retardant antimony white, and the addition amount of the flame retardant antimony white is 4% of the mass of the PVC plate layer.

[0052] The moisture-proof layer is prepared by using 70% of wood fiber, 20% of MDI adhesive, 5% of waterproof wood wax oil, and 5% of solid paraffin as raw materials, and hot-pressed at a pressure of 5.5MPa for 150s at a hot-pressing temperature of 160℃.

[0053] The adhesive is polyvinyl formal; the thickness of the flame-retardant layer is 2.5mm; the thickness of the moisture-proof layer is 2mm; and the thickness of the moisture-proof and flame-retardant relief floor is 9mm.

[0054] The flame retardance is detected by GB8624-2012, the critical heat flux CHF (KW / m 2 ) of the floor is 13, the surface flame impingement of the flame tip height Fs (mm) within 20s is 35, the edge flame impingement is 37, and the smoke production (%×min) is 82.

[0055] The moisture-proof performance test is that 500g of the floor is soaked in water for 6 days to check the mass change of the floor, and the mass change of the floor of the application is small, which is 13.2g.

[0056] The floor prepared by the preparation process of the flame-retardant layer has good flame-retardant effect, and the floor prepared by the preparation process of the moisture-proof layer has good moisture-proof effect. The flame-retardant property of the floor is detected by GB8624-2012, the critical heat flux CHF (KW / m 2 ) of the floor is ≥22, the surface flame impingement of the flame tip height Fs (mm) within 20s is ≤26, the edge flame impingement is ≤28, and the smoke production (%×min) is ≤67. The flame-retardant property of the floor is excellent. The mass change of the floor of the application is small, which is ≤7.8g.

[0057] The content illustrated by the above examples should be understood as that the examples are only used for more clearly illustrating the application, and are not used for limiting the scope of the application, and the improvements and modifications made without departing from the scope of the application should be within the protection scope of the application.

Claims

1. A moisture-proof and fire-retardant relief floor comprising a PVC board layer, characterized in that: The outer layer of the PVC plate layer is provided with a fire-retardant layer, and the outer layer of the fire-retardant layer is provided with a relief layer; the PVC plate layer and the fire-retardant layer are fixed by an adhesive, and the fire-retardant layer and the relief layer are fixed by an adhesive; The inner layer of the PVC plate layer is provided with a moisture-proof layer, and the other side of the moisture-proof layer is provided with a strength layer; the PVC plate layer and the moisture-proof layer are fixed by an adhesive, and the moisture-proof layer and the strength layer are fixed by an adhesive; the other side of the strength layer is a shock-absorbing layer; In the preparation of the fire-retardant layer, 72-73% of wood fiber, 10-12% of basic magnesium carbonate, 6-9% of phenolic resin, 2-3% of ammonium chloride solution, 2-3% of waterproof wood wax oil, and 1-3% of solid paraffin are used as raw materials; the basic magnesium carbonate and the phenolic resin are stirred and mixed uniformly, and then the ammonium chloride solution is added to obtain a mixture; the wood fiber is stirred, and the mixture is uniformly sprayed on the surface of the wood fiber; the waterproof wood wax oil and the solid paraffin are added, and hot pressing is performed at a temperature of 175-185℃; The PVC plate layer is treated with fire-retardant antimony white, and the addition amount of the fire-retardant antimony white is 5-7% of the mass of the PVC plate layer; In the preparation of the moisture-proof layer, 82-89% of wood fiber, 5-8% of MDI adhesive, 3-6% of waterproof wood wax oil, and 3-5% of solid paraffin are used as raw materials, and hot pressing is performed at a pressure of 5.5-6.5MPa for 120-150s at a hot pressing temperature of 135-145℃; the adhesive is polyvinyl formal; the thickness of the fire-retardant layer is 2-2.5mm; the thickness of the moisture-proof layer is 2-2.5mm; and the thickness of the moisture-proof fire-retardant relief floor is 7-9mm.

2. The moisture resistant fire-retardant raised floor panel of claim 1, wherein, The basic magnesium carbonate is 10%, and the ammonium chloride solution is 2.5%.

3. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, characterized in that, In the preparation of the moisture-proof layer, hot pressing is performed at a pressure of 6MPa for 135s at a hot pressing temperature of 140℃.

4. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, wherein, In the preparation of the fire-retardant layer, 73% of wood fiber, 10% of basic magnesium carbonate, 9% of phenolic resin, 2.5% of ammonium chloride solution, 2.5% of waterproof wood wax oil, and 3% of solid paraffin are used as raw materials.

5. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, wherein In the preparation of the fire-retardant layer, the hot pressing temperature is 180℃.

6. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, wherein, In the preparation of the moisture-proof layer, hot pressing is performed at a pressure of 6MPa for 135s at a hot pressing temperature of 140℃.

7. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, wherein In the preparation of the moisture-proof layer, 88% of wood fiber, 6% of MDI adhesive, 3% of waterproof wood wax oil, and 3% of solid paraffin are used as raw materials.

8. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, wherein, The thickness of the fire-retardant layer is 2.5mm; the thickness of the moisture-proof layer is 2.5mm.

9. The moisture resistant fire-retardant raised floor panel according to claim 1 or 2, wherein, The thickness of the moisture-proof fire-retardant relief floor is 9mm.