PP elastic floor and preparation method thereof

Abstract

The invention discloses a PP elastic floor which is characterized in that a PP wear-resistant layer, a PP color film, a PP bottom sheet and a PP balance layer are used as structural materials, the PP wear-resistant layer and the PP color film are attached to the PP bottom sheet through a direct hot-pressing attaching method, and the PP balance layer is attached to the lower surface of the PP bottom sheet; the PP wear-resistant layer is arranged on the uppermost layer; the PP bottom sheet takes a PP elastomer and PP resin as main body resin and takes a PPPE recycled material as auxiliary resin; the PP wear-resistant layer and the PP balance layer take PP resin as a main body, and 5-15% of modifier MBS is added in the formula. According to the PP bottom sheet, the PP resin and the PP elastomer are blended, the processing temperature range is increased, the same effect is achieved when recycled materials are used, and the overall cohesiveness is effectively improved due to the existence of PE in the recycled materials. In the PP wear-resistant layer and the PP balance layer, MBS is of a core-shell structure and is used as a flexibilizer, the cohesiveness of the PP material is effectively improved, in addition, MBS is a micron-level filling material, the polarity of the surface of the PP film can be improved, and groups on the surface have better cohesiveness in the hot pressing process.

Description

Technical Field

[0001] The invention relates to the field of preparation of stone plastic floor, in particular to a PP elastic floor and a preparation method thereof. Background Art

[0002] At present, the flooring industry is mainly dominated by two categories: wooden flooring and PVC plastic flooring. Among them, PVC plastic flooring is a new type of lightweight floor decoration material that is very popular in the world today, also known as "lightweight flooring", and is widely used. However, since PVC contains a large amount of chlorine, the flooring releases hydrochloric acid and other toxic gases during the combustion process, which affects people's health and safety. In addition, PVC is a non-degradable plastic, which also poses a huge challenge to the environmental issues that people are increasingly concerned about.

[0003] In recent years, the rise of PP flooring has set off a wave of environmental protection in the flooring industry. However, pure PP elastic flooring has the problems of high cost and poor elastic and general bonding properties. Therefore, research on a low-cost, high-elasticity and high-adhesion PP floor meets the current market demand. Summary of the invention

[0004] Purpose of the invention: In order to solve the problems existing in the prior art, the present invention proposes an environmentally friendly PP elastic floor with higher elasticity and bonding performance and reduced cost, and a preparation method thereof.

[0005] Technical solution: To achieve the above purpose, the present invention adopts the following technical solution: a PP elastic floor, with PP wear-resistant layer, PP color film, PP base film and PP balance layer as structural materials, the PP wear-resistant layer and PP color film are attached to the PP base film by hot pressing, and the PP balance layer is attached to the bottom of the PP base film; the PP wear-resistant layer is on the uppermost layer; the PP base film uses PP elastomer and PP resin as main resins, and PP\PE recycled materials as auxiliary resins; the PP wear-resistant layer and PP balance layer use PP resin as main body, and 5-15% of modifier MBS is added to the formula.

[0006] Furthermore, the PP film specifically includes the following components by weight: 50-70 parts of PP elastomer, 20-40 parts of PP resin, 10-20 parts of recycled resin, 300-550 parts of stone powder, 0.5-1.0 parts of antioxidant, 1-4 parts of colorant, 0.1-0.5 parts of lubricant, and 0.1-0.5 parts of external lubricant.

[0007] Furthermore, the recycled resin is PP / PE granulated material with a melt flow rate of 3-8 g / 10 min.

[0008] Furthermore, the PP wear-resistant layer specifically comprises the following components by weight: 85-95 parts of PP resin, 5-10 parts of PP-MAH, 5-15 parts of modifier MBS, 0.5-1.0 parts of antioxidant, 0.1-0.5 parts of lubricant, and 0.1-0.5 parts of external lubricant.

[0009] Furthermore, the PP balancing layer specifically includes the following components by weight: 85-95 parts of PP resin, 5-10 parts of PP-MAH, 5-15 parts of modifier MBS, 0.5-1.0 parts of antioxidant, 0.1-0.5 parts of colorant, 1-4 parts of lubricant, and 0.1-0.5 parts of external lubricant.

[0010] Furthermore, the diameter of the modifier MBS is 0.3-0.35 μm. MBS improves the surface adhesion of the transparent layer in the material, and PP-MAH anhydride can improve the dispersion of MBS in PP and improve the toughness of the transparent layer to prevent stress whitening.

[0011] Furthermore, the antioxidant is 1010; the colorant is carbon black; the lubricant is stearic acid, calcium stearate, zinc stearate, and the external lubricant is PE wax.

[0012] Furthermore, the PP wear-resistant layer and the PP balance layer are prepared by extruding PP-MAH and MBS into granules according to the formula requirements, and then mixing with PP and additives and calendering or casting into sheets.

[0013] The present invention also discloses a method for preparing the above-mentioned PP elastic floor, comprising the following steps:

[0014] (1) Weighing corresponding weight portions of each raw material, and preparing a PP bottom sheet through processes such as high mixing, cold mixing, internal mixing, open mixing, calendering, drawing, and cutting;

[0015] (2) Using a press machine, the PP wear-resistant layer and the PP color film are hot-pressed and laminated to the surface of the PP bottom sheet, and the PP balance layer is laminated to the back;

[0016] (3) UV heat treatment: using corona machine treatment, the surface tension dyne value is greater than 65; UV paint coating weight is 10-20g, the speed is 10-15.5m / min;

[0017] (4) Leave to stand and punch to obtain the finished floor.

[0018] Beneficial effects:

[0019] (1) The PP film of the present invention is blended with PP resin and PP elastomer to increase the processing temperature range. The same effect can be achieved by using recycled materials. The presence of PE in the recycled materials also effectively improves the overall adhesion and the peel strength between the film and the color film and the balance film. (2) In the PP wear-resistant layer and the PP balance layer, MBS is a core-shell structure. It is used as a toughening agent to effectively improve the polarity of the PP material. In addition, MBS can increase the polarity of the PP film surface, and the surface groups have better adhesion during the hot pressing process. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] A PP elastic floor uses a PP wear-resistant layer, a PP color film, a PP base film and a PP balancing layer as structural materials. The PP wear-resistant layer and the PP color film are attached to the PP base film, and the PP balancing layer is attached to the bottom of the PP base film by direct hot pressing. The PP wear-resistant layer is the uppermost layer. The PP base film uses PP elastomer and PP resin as main resins, and uses PP\PE recycled materials as auxiliary resins. The PP wear-resistant layer and the PP balancing layer use PP resin as the main body, and 5% of a modifier MBS is added to the formula.

[0022] The PP bottom sheet specifically includes the following components by weight: 50 parts of PP elastomer, 20 parts of PP resin, 10 parts of recycled resin, 300 parts of stone powder, 0.5 parts of antioxidant, 1 part of colorant, 0.1 parts of lubricant, and 0.1 parts of external lubricant; the recycled resin is PP / PE granulation material with a melt flow rate of 3g / 10min; the PP wear-resistant layer specifically includes the following components by weight: 85 parts of PP resin, 5 parts of PP-MAH, 5 parts of modifier MBS, 0.5 parts of antioxidant, 0.1 parts of lubricant, and 0.1 parts of external lubricant; the PP balancing layer specifically includes the following components by weight: 85 parts of PP resin, 5 parts of PP-MAH, 5 parts of modifier MBS, 0.5 parts of antioxidant, 1 part of colorant, 0.1 parts of lubricant, and 0.1 parts of external lubricant;

[0023] The modifier MBS has a diameter of 0.3 μm. MBS improves the surface adhesion of the transparent layer in the material, and PP-MAH anhydride can improve the dispersion of MBS in PP and improve the toughness of the transparent layer to prevent stress whitening. The antioxidant is 1010; the colorant is carbon black; the lubricant is stearic acid, calcium stearate, zinc stearate, and the external lubricant is PE wax; the PP wear-resistant layer and the PP balance layer are pre-extruded and granulated with PP-MAH and MBS according to the formula requirements, and then mixed with PP and additives and calendered into sheets.

[0024] The above-mentioned method for preparing the PP elastic floor comprises the following steps:

[0025] (1) Weighing corresponding weight portions of each raw material, and preparing a PP bottom sheet through processes such as high mixing, cold mixing, internal mixing, open mixing, calendering, drawing, and cutting;

[0026] (2) Using a press machine, the PP wear-resistant layer and the PP color film are hot-pressed and laminated to the surface of the PP bottom sheet, and the PP balance layer is laminated to the back;

[0027] (3) UV heat treatment: corona machine treatment, surface tension dyne value greater than 65; UV paint coating weight 15g, speed 10m / min;

[0028] (4) Leave to stand and punch to obtain the finished floor.

[0029] Embodiment 2:

[0030] A PP elastic floor uses a PP wear-resistant layer, a PP color film, a PP base film and a PP balancing layer as structural materials. The PP wear-resistant layer and the PP color film are attached to the PP base film, and the PP balancing layer is attached to the bottom of the PP base film by direct hot pressing. The PP wear-resistant layer is the uppermost layer. The PP base film uses PP elastomer and PP resin as main resins, and uses PP\PE recycled materials as auxiliary resins. The PP wear-resistant layer and the PP balancing layer use PP resin as the main body, and 15% of a modifier MBS is added to the formula.

[0031] The PP bottom sheet specifically includes the following components by weight: 70 parts of PP elastomer, 40 parts of PP resin, 20 parts of recycled resin, 550 parts of stone powder, 1.0 parts of antioxidant, 4 parts of colorant, 0.5 parts of lubricant, and 0.5 parts of external lubricant; the recycled resin is PP / PE granulation material with a melt flow rate of 8g / 10min; the PP wear-resistant layer specifically includes the following components by weight: 95 parts of PP resin, 10 parts of PP-MAH, 15 parts of modifier MBS, 1.0 parts of antioxidant, 0.5 parts of lubricant, and 0.5 parts of external lubricant. The PP balancing layer specifically includes the following components by weight: 95 parts of PP resin, 10 parts of PP-MAH, 15 parts of modifier MBS, 1.0 parts of antioxidant, 4 parts of colorant, 0.5 parts of lubricant, and 0.5 parts of external lubricant;

[0032] The modifier MBS has a diameter of 0.35 μm. MBS improves the surface adhesion of the transparent layer in the material, and PP-MAH anhydride can improve the dispersion of MBS in PP and improve the toughness of the transparent layer to prevent stress whitening. The antioxidant is 1010; the colorant is carbon black; the lubricant is stearic acid, calcium stearate, zinc stearate, and the external lubricant is PE wax; the PP wear-resistant layer and the PP balance layer are pre-extruded and granulated with PP-MAH and MBS according to the formula requirements, and then mixed with PP and additives and calendered into sheets.

[0033] The above-mentioned method for preparing the PP elastic floor comprises the following steps:

[0034] (1) Weighing the corresponding weight portions of each raw material, and preparing the PP bottom sheet through the processes of high mixing, cold mixing, internal mixing, open mixing, calendering, hot pressing lamination, pulling, cutting, etc.;

[0035] (2) Using a press machine, the PP wear-resistant layer and the PP color film are hot-pressed and laminated to the surface of the PP bottom sheet, and the PP balance layer is laminated to the back;

[0036] (3) UV heat treatment: corona machine treatment, surface tension dyne value greater than 65; UV paint coating weight 20g, speed 15.5m / min;

[0037] (4) Leave to stand and punch to obtain the finished floor.

[0038] Embodiment 3:

[0039] A PP elastic floor uses a PP wear-resistant layer, a PP color film, a PP base film and a PP balancing layer as structural materials. The PP wear-resistant layer and the PP color film are attached to the PP base film, and the PP balancing layer is attached to the bottom of the PP base film by direct hot pressing. The PP wear-resistant layer is the uppermost layer. The PP base film uses PP elastomer and PP resin as main resins, and uses PP\PE recycled materials as auxiliary resins. The PP wear-resistant layer and the PP balancing layer use PP resin as the main body, and 10% of a modifier MBS is added to the formula.

[0040] The PP bottom sheet specifically includes the following components by weight: 60 parts of PP elastomer, 30 parts of PP resin, 15 parts of recycled resin, 450 parts of stone powder, 0.8 parts of antioxidant, 3 parts of colorant, 0.3 parts of lubricant, and 0.3 parts of external lubricant; the recycled resin is PP / PE granulation material with a melt flow rate of 5g / 10min; the PP wear-resistant layer specifically includes the following components by weight: 90 parts of PP resin, 8 parts of PP-MAH, 10 parts of modifier MBS, 0.8 parts of antioxidant, 0.3 parts of lubricant, and 0.3 parts of external lubricant; the PP balancing layer specifically includes the following components by weight: 90 parts of PP resin, 8 parts of PP-MAH, 10 parts of modifier MBS, 0.8 parts of antioxidant, 3 parts of colorant, 0.3 parts of lubricant, and 0.3 parts of external lubricant.

[0041] The modifier MBS has a diameter of 0.35 μm. MBS improves the surface adhesion of the transparent layer in the material, and PP-MAH anhydride can improve the dispersion of MBS in PP and improve the toughness of the transparent layer to prevent stress whitening. The antioxidant is 1010; the colorant is carbon black; the lubricant is stearic acid, calcium stearate, zinc stearate, and the external lubricant is PE wax; the PP wear-resistant layer and the PP balance layer are pre-extruded with PP-MAH and MBS according to the formula requirements, and then mixed with PP and additives and calendered into sheets.

[0042] The above-mentioned method for preparing the PP elastic floor comprises the following steps:

[0043] (1) Weighing corresponding weight portions of each raw material, and preparing a PP bottom sheet through processes such as high mixing, cold mixing, internal mixing, open mixing, calendering, drawing, and cutting;

[0044] (2) Using a press machine, the PP wear-resistant layer and the PP color film are hot-pressed and laminated to the surface of the PP bottom sheet, and the PP balance layer is laminated to the back;

[0045] (3) UV heat treatment: using corona machine treatment, the surface tension dyne value is greater than 65; UV paint coating weight is 15-20g, the speed is 10-15.5m / min;

[0046] (4) Leave to stand and punch to obtain the finished floor.

[0047] In addition, comparative examples 1 and 2 are provided.

[0048] Comparative Example 1:

[0049] The other embodiments are the same as those in Example 3, except that the formula is different and the PP wear-resistant layer and the PP balancing layer do not contain PP-MAH.

[0050] Comparative Example 2:

[0051] The other embodiments are the same as those in Example 3, except that the formula is different and the PP wear-resistant layer and the PP balance layer do not contain MBS.

[0052] Comparative Example 3:

[0053] The other embodiments are the same as those of Example 3, except that the formula is different and the PP bottom film layer does not contain PP / PE recycled material.

[0054] The performance of the finished floor products prepared in Example 3 and Comparative Examples 1 to 2 was tested, and the specific performance indicators were adhesion, peel strength (adhesive performance), and floor adhesiveness;

[0055] The specific performance indicators are peel strength (adhesive performance); the adhesive performance is measured and compared by using a tensile tester to stretch the floor after bonding it to the composite film. UV adhesion is measured by scratching with a grid knife and then sticking with tape. For the floor glue coating test, after scraping the glue on the back of the floor, stick it on the gypsum board and use a tensile machine to test the adhesiveness.

[0056] The test results are shown in Table 1:

[0057] Table 1 Comprehensive performance test results of floor products of Example 3 and Comparative Examples 1-2

[0058]

[0059] It can be seen from the data in Table 1 that the PP elastic floor prepared in Example 3 of the present invention meets the requirements of PVC floor in terms of performance and has better adhesion. The peeling strength of both the color film and the balancing layer is better than that of the comparative example, and the floor has better adhesiveness.

Claims

1. A PP elastic floor, characterized in that With PP wear-resistant layer, PP color film, PP bottom film and PP balance layer as structural materials, the PP wear-resistant layer and PP color film are attached to the PP bottom film, and the PP balance layer is attached to the bottom of the PP bottom film by direct hot pressing lamination; The PP wear-resistant layer is on the top; the PP bottom sheet uses PP elastomer and PP resin as main resins, and uses PP\PE recycled materials as auxiliary resins; the PP wear-resistant layer and the PP balance layer use PP resin as main body, and 5-15% of modifier MBS is added in the formula.

2. A PP elastic floor according to claim 1, characterized in that The PP bottom sheet specifically includes the following components by weight: 50-70 parts of PP elastomer, 20-40 parts of PP resin, 10-20 parts of recycled resin, 300-550 parts of stone powder, 0.5-1.0 parts of antioxidant, 1-4 parts of colorant, 0.1-0.5 parts of lubricant, and 0.1-0.5 parts of external lubricant.

3. The PP elastic floor according to claim 2, characterized in that: The recycled resin is PP / PE granulated material with a melt flow rate of 3-8 g / 10 min.

4. The PP elastic floor according to claim 1, characterized in that The PP wear-resistant layer specifically comprises the following components by weight: 85-95 parts of PP resin, 5-10 parts of PP-MAH, 5-15 parts of modifier MBS, 0.5-1.0 parts of antioxidant, 1-4 parts of lubricant, and 0.1-0.5 parts of external lubricant.

5. The PP elastic floor according to claim 1, characterized in that The PP balancing layer specifically includes the following components by weight: 85-95 parts of PP resin, 5-10 parts of PP-MAH, 5-15 parts of modifier MBS, 0.5-1.0 parts of antioxidant, 0.1-0.5 parts of colorant, 1-4 parts of lubricant, and 0.1-0.5 parts of external lubricant.

6. A PP elastic floor according to claim 4 or 5, characterized in that: The modifier MBS has a diameter of 0.3-0.35 μm.

7. A PP elastic floor according to any one of claims 2, 4 and 5, characterized in that: The antioxidant is 1010; the colorant is carbon black; the lubricant is stearic acid, calcium stearate, zinc stearate, and the external lubricant is PE wax.

8. The PP elastic floor according to claim 1, characterized in that: The PP wear-resistant layer and the PP balance layer are prepared by extruding PP-MAH and MBS into granules according to the formula requirements, and then mixing with PP and additives and calendering or casting into sheets.

9. The method for preparing a PP elastic floor according to claim 1, characterized in that The steps include: Weigh the corresponding weight portions of the raw materials, and prepare the PP bottom sheet through the processes of high mixing, cold mixing, internal mixing, open mixing, calendering, pulling, cutting, etc.; Through the press, the PP wear-resistant layer and PP color film are hot-pressed and laminated to the surface of the PP film, and the PP balance layer is laminated to the back; UV heat treatment: using corona machine for treatment, the surface tension dyne value is greater than 65; UV paint coating weight is 10-20g, speed is 10-15.5m / min; The finished floor is left to die cut.

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