CN110628121A - EVA (ethylene vinyl acetate) floor mat and preparation process thereof - Google Patents
EVA (ethylene vinyl acetate) floor mat and preparation process thereof Download PDFInfo
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- CN110628121A CN110628121A CN201910897176.4A CN201910897176A CN110628121A CN 110628121 A CN110628121 A CN 110628121A CN 201910897176 A CN201910897176 A CN 201910897176A CN 110628121 A CN110628121 A CN 110628121A
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
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Abstract
The invention relates to an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight: 30-50 parts of regenerated EVA, 15-25 parts of calcium carbonate, 20-25 parts of flame retardant, 6-10 parts of anti-skid particles, 3-5 parts of carbon black, 2-4 parts of foaming agent, 0.2-0.4 part of cross-linking agent, 0.7-1.2 parts of reinforcing agent, 0.1-0.2 part of triallyl isocyanurate, 0.6-0.8 part of zinc stearate and 0.3-0.5 part of stearic acid; the anti-skid particles are prepared from the following components in parts by mass: (0.3-0.6) a mixture of silica gel particles and ceramic particles; the preparation process comprises the following steps: s1, adding raw materials into an internal mixer in sequence for banburying; s2, conveying the uniformly mixed raw materials to an open mill for pressing into strips; s3, cooling the strip-shaped objects to 40-45 ℃ through a plurality of cooling rollers; s4, slitting the formed strip-shaped objects to obtain a preformed product; s5, coating a release agent on the mold, and then placing the preformed product on the mold for mold pressing treatment; and S6, performing edge cutting treatment on the preformed product after the die pressing is finished to obtain a finished product. The invention has the effect of improving the skid resistance of the floor mat.
Description
Technical Field
The invention relates to the technical field of production and processing of ground mats, in particular to an EVA ground mat and a preparation process thereof.
Background
EVA rubber and plastic products are novel environment-friendly plastic foaming materials, have advantages such as good buffering, antidetonation, thermal-insulated, dampproofing, antibiotic, anti chemical corrosion, and EVA easily carries out processing such as hot pressing, tailors, rubber coating, laminating, has good resilience and tension resistance, and its keeps warm winter protection and low temperature performance are excellent, can be able to bear or endure severe cold and insolate.
The EVA is often used in the industry for producing the ground mat, and the EVA ground mat can be biodegraded, thereby conforming to the production concept of green environmental protection. Because the restriction of EVA ground mat material itself, its non-skid property is relatively poor to the ground mat of EVA production as the main materials is poor with the adsorption efficiency of ground and people's foot, leads to the EVA ground mat not antiskid, has increased the smooth danger of falling of user.
Disclosure of Invention
The invention aims to provide an EVA floor mat which has the effect of improving the skid resistance of the floor mat.
The second purpose of the invention is to provide a preparation process of the EVA floor mat based on the first purpose.
The technical purpose of the invention is realized by the following technical scheme: an EVA floor mat comprises the following components in parts by weight: 30-50 parts of regenerated EVA, 15-25 parts of calcium carbonate, 20-25 parts of flame retardant, 6-10 parts of anti-skid particles, 3-5 parts of carbon black, 2-4 parts of foaming agent, 0.2-0.4 part of cross-linking agent, 0.7-1.2 parts of reinforcing agent, 0.1-0.2 part of triallyl isocyanurate, 0.6-0.8 part of zinc stearate and 0.3-0.5 part of stearic acid; the anti-skid particles are prepared from the following components in parts by mass: (0.3-0.6) a mixture of silica gel particles and ceramic particles.
By adopting the technical scheme, the anti-skid particles are highlighted on the surface of a finished floor mat product, so that a plurality of micro-pits are formed on the surface of the floor mat in an uneven manner, original capillary channels on the surface of the floor mat are widened, the roughness of the surface of the floor mat is improved, the static friction coefficient between the floor mat and the ground and between the floor mat and the double feet is improved, the friction force between the floor mat and the ground and between the floor mat and the double feet is further improved, when water stains exist on the ground, the capillary channels and the micro-pits are filled, when the double feet step on the floor mat to apply pressure to the floor mat, water is squeezed out, a plurality of anti-skid micro suckers are formed between the floor mat and the ground and between the ground mat and the double feet, the static friction coefficient between the floor mat and the ground and; the anti-skid particles are directly added into the raw materials, so that the mixing uniformity and the adhesiveness between the anti-skid particles and the raw materials are improved, and the anti-skid performance of the floor mat is prevented from being influenced by the fact that the anti-skid particles fall off from the floor mat in the long-term use process of the floor mat; the melting points of the silica gel particles and the ceramic particles are higher than those of the regenerated EVA, the silica gel particles and the ceramic particles are stable in property and can not be melted in the process of preparing the ground mat, and the silica gel particles and the ceramic particles are not easy to burn, so that the safety of the finished ground mat is improved; the silica gel particles have good chemical stability and are not easy to burn, thereby being beneficial to improving the safety performance of the ground mat; because the material of silica gel particle is softer, add ceramic particle in order to improve the bulk hardness of ground mat to ground mat warp when avoiding the both feet to step on the ground mat, and ceramic particle has superior wear resistance, with this life who prolongs the ground mat.
The invention is further configured to: the particle size of the silica gel particles is 1-5mm, and the particle size of the ceramic particles is 1-2.5 mm.
By adopting the technical scheme, the particle sizes of the silica gel particles and the ceramic particles are controlled within a proper range, the particle sizes of the silica gel particles and the ceramic particles are too large, and the pits formed on the floor mat are too large, so that the roughness of the surface of the floor mat cannot be improved, and the comfort level of the floor mat is influenced; if the particle sizes of the two are too small, pits on the surface of the floor mat are not obvious enough, the surface is still smooth, and the roughness of the surface of the floor mat cannot be improved.
The invention is further configured to: the flame retardant comprises 15-18 parts of decabromodiphenylethane and 5-8 parts of antimony trioxide.
By adopting the technical scheme, the decabromodiphenylethane has high bromine content, good thermal stability and good ultraviolet resistance, and has low exudation compared with other brominated flame retardants; antimony trioxide and decabromodiphenylethane are used in a composite mode, and the synergistic effect of the antimony trioxide and the decabromodiphenylethane is beneficial to improving the flame retardant effect of the ground mat, so that the safety performance of the ground mat is improved.
The invention is further configured to: the foaming agent is azodicarbonamide.
By adopting the technical scheme, the azodicarbonamide is added into the raw materials, so that the foaming efficiency in the preparation process of the raw materials is improved, and the toughness and the strength of the ground mat are improved.
The invention is further configured to: the cross-linking agent is DCP.
By adopting the technical scheme, the DCP is decomposed into free radicals with high chemical activity in a heating state, and the free radicals capture hydrogen atoms in regenerated EVA molecules, so that partial carbon atoms of the main chain of the regenerated EVA molecules show activity and are combined with the free radicals to generate C-C cross-linked bonds, and a reticular macromolecular structure is formed in the regenerated EVA, so that the cross-linking degree among the molecules is improved, and various physical and chemical properties of the ground mat are improved; the accelerating group in the triallyl isocyanurate in the raw material has the function of improving the crosslinking density of the DCP, so that the density of a reticular structure in a crosslinking product is increased, and the addition of the triallyl cyanurate is favorable for reducing the consumption of the DCP and reducing the production cost; because DCP has high vulcanizing speed and is non-toxic and environment-friendly, the DCP is selected as a cross-linking agent.
The invention is further configured to: the reinforcing agent is zinc oxide.
By adopting the technical scheme, the zinc oxide does not participate in the reaction and is used for activating the vulcanization system, so that the reaction process of the vulcanization system is promoted, the cross-linking density among molecules in the vulcanization reaction is improved, and the high efficiency of the vulcanization reaction is ensured.
The invention is further configured to: a preparation process of an EVA floor mat specifically comprises the following steps:
s1, banburying, namely adding regenerated EVA, calcium carbonate, anti-skid particles, zinc stearate, stearic acid and a flame retardant into a banbury mixer for mixing, then adding a cross-linking agent, a reinforcing agent and triallyl isocyanurate for vulcanization treatment, then adding a foaming agent, and finally adding carbon black for color mixing, wherein the banburying temperature is 110-120 ℃, and the banburying time is 10-20 min;
s2, open smelting: conveying the uniformly mixed raw materials to an open mill through a conveying hopper to be pressed into strips, wherein the open mill comprises a front roller and a rear roller, the temperature of the front roller is 60-90 ℃, and the temperature of the rear roller is 5-10 ℃ lower than that of the front roller;
s3, cooling: cooling the strip-shaped object to 40-45 ℃ by a plurality of cooling rollers to form the strip-shaped object;
s4, slitting: cutting the formed strip-shaped object to obtain a sheet-shaped preform;
s5, mould pressing: coating a release agent on the mold, and then placing the preformed product on the mold for mold pressing treatment, wherein the mold pressing temperature is 170-175 ℃, and the mold pressing time is 15-25 min;
s6, trimming: and (4) performing edge cutting treatment on the pre-formed product after the pressing is finished to obtain a finished product.
By adopting the technical scheme, the raw materials are added in sequence and are internally mixed, the internally mixed raw materials are milled and pressed into strips, the strips are cooled by a cooling roller and then are formed, the formed strips are convenient to cut into various sizes, and the cut preformed products are subjected to die pressing treatment and then are cut into edges to obtain finished products.
The invention is further configured to: the raw material in the S2 is conveyed between a front roller and a rear roller, and the distance between the front roller and the rear roller is 0.5-3 cm.
Through adopting above-mentioned technical scheme, set up the interval between preceding roller and the back roller to 0.5-3cm, the strip that is extruded into different thickness when the raw materials passes through between preceding roller and the back roller to satisfy different production demands.
The invention is further configured to: the release agent in the S5 is any one of methyl silicone oil, silicone resin or silicone rubber toluene solution.
By adopting the technical scheme, the methyl silicone oil, the silicone resin and the silicone rubber toluene solution are all silicon catalysts, and the three have extremely low surface tension, excellent heat stability and good adhesive force, are non-volatile and non-irritant, are safe and environment-friendly and have low cost, so that one of the three is selected as the release agent.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the silica gel particles and the anti-skid particles are protruded on the surface of the finished floor mat product, so that a plurality of micro-pits are formed on the surface of the floor mat in a rugged manner, the roughness of the surface of the floor mat is improved, the static friction coefficient between the floor mat and the ground and between the floor mat and the feet is improved, and the friction force between the floor mat and the ground and between the floor mat and the feet is further improved;
2. the ceramic particles are added to improve the overall hardness of the floor mat so as to avoid the deformation of the floor mat when feet step on the floor mat, and the ceramic particles have excellent wear resistance so as to prolong the service life of the floor mat;
3. the particle size control of silica gel granule and ceramic particle is favorable to guaranteeing the improvement of ground mat surface roughness at suitable within range to improve the non-skid property of ground mat.
Drawings
FIG. 1 is a flow chart of the production process of this example.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Embodiment 1 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 4.6 | Zinc stearate | 0.8 |
| Ceramic particles | 2.45 | Stearic acid | 0.4 |
| Carbon black | 4 |
The grain size of the silica gel grains is 2.5mm, and the grain size of the ceramic grains is 1.5 mm;
the preparation method specifically comprises the following preparation steps:
s1, banburying, namely adding regenerated EVA, calcium carbonate, silica gel particles, ceramic particles, zinc stearate, stearic acid, decabromodiphenylethane and antimony trioxide into a banbury mixer for mixing, adding DCP, zinc oxide and triallyl isocyanurate for vulcanization, then adding azodicarbonamide, and finally adding carbon black for color mixing, wherein the banburying temperature is 120 ℃, and the banburying time is 15 min;
s2, open smelting: conveying the uniformly mixed raw materials to an open mill through a conveying hopper to be pressed into strips, wherein the open mill comprises a front roller and a rear roller, the temperature of the front roller is 75 ℃, the temperature of the rear roller is 5 ℃ lower than that of the front roller, and the distance between the front roller and the rear roller is 1.5 cm;
s3, cooling: cooling the strip-shaped object to 40 ℃ by a plurality of cooling rollers to form the strip-shaped object;
s4, slitting: cutting the formed strip-shaped object to obtain a sheet-shaped preform;
s5, mould pressing: coating methyl silicone oil on the mold, and then placing the preformed product on the mold for mold pressing treatment, wherein the mold pressing temperature is 170 ℃, and the mold pressing time is 20 min;
s6, trimming: and (4) performing edge cutting treatment on the pre-formed product after the pressing is finished to obtain a finished product.
Embodiment 2 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 50 | Azodicarbonamide | 2 |
| Calcium carbonate | 15 | DCP | 0.3 |
| Decabromodiphenylethane | 15 | Zinc oxide | 0.9 |
| Antimony trioxide | 5 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 5.6 | Zinc stearate | 0.8 |
| Ceramic particles | 1.8 | Stearic acid | 0.5 |
| Carbon black | 3 |
The grain size of the silica gel grains is 2.5mm, and the grain size of the ceramic grains is 1.5 mm;
the concrete preparation steps are the same as those in example 1.
Embodiment 3 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
the grain size of the silica gel grains is 2.5mm, and the grain size of the ceramic grains is 1.5 mm;
the concrete preparation steps are the same as those in example 1.
Embodiment 4 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 4.6 | Zinc stearate | 0.8 |
| Ceramic particles | 2.45 | Stearic acid | 0.4 |
| Carbon black | 4 |
The grain size of the silica gel grains is 1mm, and the grain size of the ceramic grains is 1 mm;
the concrete preparation steps are the same as those in example 1.
Embodiment 5 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 4.6 | Zinc stearate | 0.8 |
| Ceramic particles | 2.45 | Stearic acid | 0.4 |
| Carbon black | 4 |
The grain size of the silica gel grains is 5mm, and the grain size of the ceramic grains is 2.5 mm;
the concrete preparation steps are the same as those in example 1.
Embodiment 6 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 4.6 | Zinc stearate | 0.8 |
| Ceramic particles | 2.45 | Stearic acid | 0.4 |
| Carbon black | 4 |
The grain size of the silica gel grains is 1mm, and the grain size of the ceramic grains is 2.5 mm;
the concrete preparation steps are the same as those in example 1.
Embodiment 7 discloses an EVA floor mat and a preparation process thereof, wherein the EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 4.6 | Zinc stearate | 0.8 |
| Ceramic particles | 2.45 | Stearic acid | 0.4 |
| Carbon black | 4 |
The particle size of the silica gel particles is 5mm, and the particle size of the ceramic particles is 1 mm;
the concrete preparation steps are the same as those in example 1.
The EVA floor mat comprises the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 0 | Zinc stearate | 0.8 |
| Ceramic particles | 8 | Stearic acid | 0.4 |
| Carbon black | 4 |
The grain diameter of the ceramic particles is 1.5 mm;
the preparation method specifically comprises the following preparation steps:
s1, banburying, namely adding regenerated EVA, calcium carbonate, ceramic particles, zinc stearate, stearic acid, decabromodiphenylethane and antimony trioxide into a banbury mixer for mixing, adding DCP, zinc oxide and triallyl isocyanurate for vulcanization, then adding azodicarbonamide, and finally adding carbon black for toning, wherein the banburying temperature is 120 ℃, and the banburying time is 15 min;
S2-S6 were prepared in the same manner as in example 1.
Comparative example 2, the EVA floor mat and the preparation process thereof disclosed by the invention comprise the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 8 | Zinc stearate | 0.8 |
| Ceramic particles | 0 | Stearic acid | 0.4 |
| Carbon black | 4 |
The particle size of the silica gel particles is 2.5 mm;
the preparation method specifically comprises the following preparation steps:
s1, banburying, namely adding regenerated EVA, calcium carbonate, silica gel particles, zinc stearate, stearic acid, decabromodiphenylethane and antimony trioxide into a banbury mixer for mixing, adding DCP, zinc oxide and triallyl isocyanurate for vulcanization, then adding azodicarbonamide, and finally adding carbon black for color mixing, wherein the banburying temperature is 120 ℃, and the banburying time is 15 min;
S2-S6 were prepared in the same manner as in example 1.
Comparative example 3, the EVA floor mat and the preparation process thereof disclosed by the invention comprise the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 46 | Azodicarbonamide | 3.6 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 0 | Zinc stearate | 0.8 |
| Ceramic particles | 0 | Stearic acid | 0.4 |
| Carbon black | 4 |
The preparation method specifically comprises the following preparation steps:
s1, banburying, namely adding regenerated EVA, calcium carbonate, zinc stearate, stearic acid, decabromodiphenylethane and antimony trioxide into a banbury mixer for mixing, then adding DCP, zinc oxide and triallyl isocyanurate for vulcanization treatment, then adding azodicarbonamide, and finally adding carbon black for color mixing, wherein the banburying temperature is 120 ℃, and the banburying time is 15 min;
S2-S6 were prepared in the same manner as in example 1.
Comparative example 4, the EVA floor mat and the preparation process thereof disclosed by the invention comprise the following components in parts by weight:
| components | Parts by weight | Components | Parts by weight |
| Regenerated EVA | 40 | Azodicarbonamide | 3.45 |
| Calcium carbonate | 20 | DCP | 0.3 |
| Decabromodiphenylethane | 16 | Zinc oxide | 0.9 |
| Antimony trioxide | 7 | Triallylisocyanurate | 0.1 |
| Silica gel particle | 4.6 | Zinc stearate | 0.8 |
| Ceramic particles | 2.45 | Stearic acid | 0.4 |
| Carbon black | 4 |
The grain size of the silica gel grains is 6mm, and the grain size of the ceramic grains is 3 mm;
the concrete preparation steps are the same as those in example 1.
The EVA floor mat and the preparation process thereof disclosed by the invention comprise the following components in parts by weight:
the grain size of the silica gel grains is 0.5mm, and the grain size of the ceramic grains is 0.5 mm;
the concrete preparation steps are the same as those in example 1.
Performance test
Sampling the finished products prepared in the examples 1 to 7 and the comparative examples 1 to 5, wherein 50 parts of the samples are sampled in each group of examples, randomly selecting 30 parts of the samples in each group for comfort level detection, and performing roughness detection on the remaining 20 parts of the samples, wherein the recording results are shown in table 1;
comfort level detection: randomly selecting passerby to test the comfort level of the ground mat by touching and using the ground mat, and dividing the comfort level of the ground mat into 3 grades, wherein the very comfort level is 1 grade, the common comfort level is 2 grade, and the discomfort level is 3 grade;
and (3) roughness detection: detecting the arithmetic mean deviation (namely Ra value) of the profile of the sample by using an electric profilometer, wherein the higher the Ra value is, the larger the surface roughness of the sample is; during measurement, the tip of the probe of the instrument makes horizontal movement measurement on the section of the sample surface perpendicular to the processing texture direction, and a measurement stroke Ra value is directly obtained from the indicating instrument.
TABLE 1-data for the various performance tests of the samples of examples 1-7 and comparative examples 1-5
| Comfort level | Ra | |
| Example 1 | 1 | 4.34 |
| Example 2 | 1 | 3.91 |
| Example 3 | 1 | 3.76 |
| Example 4 | 1 | 3.57 |
| Example 5 | 2 | 3.75 |
| Example 6 | 1 | 4.11 |
| Example 7 | 1 | 4.24 |
| Comparative example 1 | 2 | 2.24 |
| Comparative example 2 | 1 | 2.63 |
| Comparative example 3 | 1 | 1.21 |
| Comparative example 4 | 3 | 1.73 |
| Comparative example 5 | 2 | 1.44 |
The values of the samples in examples 1-3 in Table 1 show that: within a proper proportion, the finished floor mat has higher comfort level and larger surface roughness, which indicates that the finished floor mat has good anti-skid performance;
from the values of the samples in example 1 and examples 4 to 7, it can be seen that: the silica gel particles and the ceramic particles are controlled within a proper range, so that the finished floor mat has high surface roughness and high comfort; the comfort of the floor mat in example 5 is reduced because the particle sizes selected by the silica gel particles and the ceramic particles are larger, which shows that the particle sizes of the silica gel particles and the ceramic particles really have certain influence on the comfort of the floor mat;
according to the values of the samples in the example 1 and the comparative example 1, the following results can be obtained: the silica gel particles are deleted, so that the comfort and the surface roughness of the finished floor mat are reduced, and the comfort is reduced because the ceramic particles have higher hardness and the silica gel particles are not neutralized, so that the surface touch of the finished floor mat is hard, which indicates that the silica gel particles are added to be beneficial to improving the comfort of the finished floor mat; the reduction of the surface roughness indicates that the addition of the silica gel particles has a positive effect on improving the anti-skid performance of the finished floor mat product;
according to the values of the samples in the example 1 and the comparative example 2, the following results can be obtained: the ceramic particles are deleted, so that the surface roughness of the finished floor mat is reduced, and the addition of the silica gel particles has a positive effect on improving the anti-skid performance of the finished floor mat;
according to the numerical values of the samples in example 1 and comparative examples 1 to 3, it can be seen that: the silica gel particles and the ceramic particles are deleted, so that the surface roughness of the finished floor mat is greatly reduced, which shows that the silica gel particles and the ceramic particles have positive effects on improving the anti-skid performance of the finished floor mat, and the silica gel particles or the ceramic particles are added independently to improve the anti-skid performance of the finished floor mat, but the effect is better when the silica gel particles and the ceramic particles are used in a combined manner;
according to the values of the samples in the example 1 and the comparative examples 4 to 5, the following results can be obtained: silica gel particles with undersize or oversized particle diameters and ceramic particles are not beneficial to improving the surface roughness of the finished floor mat, and the comfort degree of the finished floor mat is reduced, so that the particle diameters of the anti-skid particles are controlled within a proper range.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. An EVA floor mat comprises the following components in parts by weight: 30-50 parts of regenerated EVA, 15-25 parts of calcium carbonate, 20-25 parts of flame retardant, 6-10 parts of anti-skid particles, 3-5 parts of carbon black, 2-4 parts of foaming agent, 0.2-0.4 part of cross-linking agent, 0.7-1.2 parts of reinforcing agent, 0.1-0.2 part of triallyl isocyanurate, 0.6-0.8 part of zinc stearate and 0.3-0.5 part of stearic acid; the anti-skid particles are prepared from the following components in parts by mass: (0.3-0.6) a mixture of silica gel particles and ceramic particles.
2. An EVA floor mat as claimed in claim 1, wherein: the particle size of the silica gel particles is 1-5mm, and the particle size of the ceramic particles is 1-2.5 mm.
3. An EVA floor mat as claimed in claim 1, wherein: the flame retardant comprises 15-18 parts of decabromodiphenylethane and 5-8 parts of antimony trioxide.
4. An EVA floor mat as claimed in claim 1, wherein: the foaming agent is azodicarbonamide.
5. An EVA floor mat as claimed in claim 1, wherein: the cross-linking agent is DCP.
6. An EVA floor mat as claimed in claim 1, wherein: the reinforcing agent is zinc oxide.
7. A process for preparing an EVA floor mat according to any one of claims 1 to 6, comprising the following steps:
s1, banburying, namely adding regenerated EVA, calcium carbonate, anti-skid particles, zinc stearate, stearic acid and a flame retardant into a banbury mixer for mixing, then adding a cross-linking agent, a reinforcing agent and triallyl isocyanurate for vulcanization treatment, then adding a foaming agent, and finally adding carbon black for color mixing, wherein the banburying temperature is 110-120 ℃, and the banburying time is 10-20 min;
s2, open smelting: conveying the uniformly mixed raw materials to an open mill through a conveying hopper to be pressed into strips, wherein the open mill comprises a front roller and a rear roller, the temperature of the front roller is 60-90 ℃, and the temperature of the rear roller is 5-10 ℃ lower than that of the front roller;
s3, cooling: cooling the strip-shaped object to 40-45 ℃ by a plurality of cooling rollers to form the strip-shaped object;
s4, slitting: cutting the formed strip-shaped object to obtain a sheet-shaped preform;
s5, mould pressing: coating a release agent on the mold, and then placing the preformed product on the mold for mold pressing treatment, wherein the mold pressing temperature is 170-175 ℃, and the mold pressing time is 15-25 min;
s6, trimming: and (4) performing edge cutting treatment on the pre-formed product after the pressing is finished to obtain a finished product.
8. The process for preparing an EVA floor mat according to claim 7, wherein: the raw material in the S2 is conveyed between a front roller and a rear roller, and the distance between the front roller and the rear roller is 0.5-3 cm.
9. The process for preparing an EVA floor mat according to claim 7, wherein: the release agent in the S5 is any one of methyl silicone oil, silicone resin or silicone rubber toluene solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910897176.4A CN110628121A (en) | 2019-09-23 | 2019-09-23 | EVA (ethylene vinyl acetate) floor mat and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910897176.4A CN110628121A (en) | 2019-09-23 | 2019-09-23 | EVA (ethylene vinyl acetate) floor mat and preparation process thereof |
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Cited By (1)
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| CN111154173A (en) * | 2020-01-17 | 2020-05-15 | 福建省足友体育用品有限公司 | EVA sole and preparation process thereof |
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