CN108948676B - Composite rubber water delivery plate and preparation method and application thereof - Google Patents
Composite rubber water delivery plate and preparation method and application thereof Download PDFInfo
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- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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Abstract
The invention provides a composite rubber water delivery plate and a preparation method thereof, wherein the water delivery plate comprises the following components in parts by weight: 50-70 parts of chloroprene rubber, 30-50 parts of ethylene propylene diene monomer, 90-110 parts of rubberized cord fabric, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 3-5 parts of light magnesium oxide, 0.6-1.4 parts of NA-22 accelerator and 0.6-1.4 parts of antioxidant CTU. The chloroprene rubber and the ethylene propylene diene monomer rubber are shared, so that the temperature change weather resistance of the water delivery plate is strong, and the water delivery plate is resistant to ozone and sunlight aging; according to the invention, the rubberized cord fabric is added, so that the tensile strength of the composite rubber water delivery plate is greatly improved, and the overall weight is reduced. The composite rubber water delivery plate prepared by the invention is used as a water delivery channel material, has the characteristics of random cutting and splicing, convenient transportation and installation, good air tightness, no water leakage and durability, and is suitable for being applied to water delivery engineering of deserts for a long time.
Description
Technical Field
The invention relates to the technical field of composite materials, in particular to a composite rubber water delivery plate and a preparation method and application thereof.
Background
In recent years, most of capital is invested in the country to control deserts, afforest trees, and need a large amount of water to irrigate during afforestation, and cement pipes are used for water delivery during irrigation in the past, but the cement pipes are inconvenient to transport, construct and install, and the size of the cement pipes also limits the improvement of water delivery capacity; and finally, because the temperature difference between day and night in the desert is too large, the waterproof layer flows in the day and the weather and is brittle in the cold day, a good water leakage prevention effect cannot be achieved, and the loss in the water delivery process is large.
Chloroprene rubber and new flat rubber have good physical and mechanical properties, are used for manufacturing oil-resistant, heat-resistant and acid-alkali-resistant rubber plates and sealing elements, some indoor chloroprene rubber plates can resist high temperature of 120-150 ℃ in a short period and can be used for a long time below 100 ℃, and the defects that the cold resistance is poor and the temperature environment with variable deserts cannot be adapted to are overcome; the ethylene propylene diene monomer rubber has excellent ozone resistance, cold resistance and ageing resistance, and has low density and high filling performance.
The anti-aging and weather-resistant performances of the product can be improved to a certain extent by adding the ethylene propylene diene monomer into the chloroprene rubber, and the cost of the rubber is reduced, but the solubility parameters of the ethylene propylene diene monomer and the chloroprene rubber are far away, so that the combination of the ethylene propylene diene monomer and the chloroprene rubber can cause the reduction of mechanical performances such as stretchability of the rubber plate, and the long-term use requirement in a desert environment cannot be met. Therefore, the rubber water delivery plate which has comprehensive performance and can be applied to severe desert environments for a long time is urgently needed to be prepared and used as a novel water delivery material for replacing cement channels.
Disclosure of Invention
In view of the above, the invention aims to provide a composite rubber water delivery plate and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a composite rubber water delivery plate which comprises the following components in parts by weight: 50-70 parts of chloroprene rubber, 30-50 parts of ethylene propylene diene monomer, 90-110 parts of rubberized cord fabric, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 3-5 parts of light magnesium oxide, 0.6-1.4 parts of NA-22 accelerator and 0.6-1.4 parts of antioxidant CTU;
preferably, the composite rubber water delivery plate comprises the following components in parts by weight: 60 parts of chloroprene rubber, 40 parts of ethylene propylene diene monomer, 100 parts of rubberized cord fabric, 5 parts of zinc oxide, 2 parts of stearic acid, 4 parts of light magnesium oxide, 1 part of NA-22 accelerator and 1 part of antioxidant CTU;
preferably, the thickness of the composite rubber water delivery plate is 1-3 mm;
preferably, the rubberized cord fabric is formed by interweaving cord threads in a warp-weft mode, and the cord threads are made of polyester fibers or polyamide fibers;
preferably, the breaking strength of the rubberized cord fabric is greater than 79cN/dtex, and the temperature resistance of the rubberized cord fabric exceeds 120 ℃.
The invention provides a preparation method of a composite rubber water delivery plate, which comprises the following steps:
(1) respectively plasticating chloroprene rubber and ethylene propylene diene monomer rubber to obtain plasticated chloroprene rubber and plasticated ethylene propylene diene monomer rubber;
(2) carrying out first banburying on the rubberized cord fabric to obtain the banburied rubberized cord fabric;
(3) mixing the rubberized cord fabric subjected to internal mixing in the step (2), the chloroprene rubber subjected to plastication in the step (1) and the ethylene propylene diene monomer subjected to plastication, and then sequentially carrying out second internal mixing and thermal mixing to obtain mixed rubber;
(4) calendering the mixed rubber obtained in the step (3) to obtain a rubber sheet;
(5) vulcanizing and molding the rubber sheet obtained in the step (4) to obtain a composite rubber water delivery plate;
the step (1) and the step (2) have no time sequence limitation.
Preferably, the plastication temperature of the chloroprene rubber and the ethylene propylene diene monomer rubber in the step (1) is 50-80 ℃.
Preferably, the rubber compound in the step (3) further comprises a heat refining before rolling, wherein the temperature of the heat refining is 40-50 ℃, and the time of the heat refining is 5-7 minutes.
Preferably, the temperature of the vulcanization molding is 145 +/-5 ℃, the pressure is 15 +/-0.5 MPa, and the vulcanization speed is 0.5 +/-0.01 m/s.
The invention provides an application of a composite rubber water delivery plate as a water delivery material of a water delivery channel.
Has the advantages that: the composite rubber plate provided by the invention comprises the following components in parts by weight: 50-70 parts of chloroprene rubber, 30-50 parts of ethylene propylene diene monomer, 90-110 parts of rubberized cord fabric, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 3-5 parts of light magnesium oxide, 0.6-1.4 parts of NA-22 accelerator and 0.6-1.4 parts of antioxidant CTU. The heat resistance and the cold resistance of the composite rubber water delivery plate depend on the chemical bond of the rubber molecular structure, the chloroprene rubber and the ethylene propylene diene monomer are shared by the chloroprene rubber and the ethylene propylene diene monomer, and the chloroprene rubber and the ethylene propylene diene monomer generate double bond crosslinking through an activating agent and an accelerating agent, so that the performance advantages of the chloroprene rubber and the ethylene propylene diene monomer are maintained, the flexibility and the elasticity of a rubber molecular chain are maintained in a wider temperature range, the heat resistance of the composite rubber water delivery plate is improved, and the composite rubber water delivery plate has better ozone resistance and sunlight resistance, is suitable for being used in outdoor environments with severe environments such as desert and the like, and is slow in aging speed and durable.
According to the invention, the rubberized cord fabric is added into the composite rubber water delivery plate, and is generally used as a framework of rubber products such as tires, and the rubberized cord fabric is applied to the composite rubber plate, so that on one hand, the integral tearing strength and wind uncovering resistance of the composite rubber water delivery plate can be greatly improved; on the other hand, because the relative density of the rubberized cord fabric is only 0.5, and the relative density of the chloroprene rubber is 1.23, the weight of the composite rubber water delivery plate can be greatly reduced by adding the rubberized cord fabric, and the transportation and installation are convenient.
The composite rubber water delivery plate provided by the invention has the characteristics of good air tightness and no water absorption, is applied to the laying of a canal, can be randomly cut and spliced according to the water flow of the canal, and has less water leakage and less pollution to water quality during water delivery.
The results of the examples show that the composite rubber water delivery plate with the thickness of 2mm provided by the invention intercepts every m2The measured weight of the product is 2.36-2.44 kg, and the weight is light; the tensile strength is 13.5-16.8 MPa, and the wind uncovering resistance is strong; the aging resistance time is long.
Detailed Description
The invention provides a composite rubber water delivery plate which comprises the following components in parts by weight: 50-70 parts of chloroprene rubber, 30-50 parts of ethylene propylene diene monomer, 90-110 parts of rubberized cord fabric, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 3-5 parts of light magnesium oxide, 0.6-1.4 parts of NA-22 accelerator and 0.6-1.4 parts of antioxidant CTU.
In the invention, the composite rubber water delivery plate comprises 50-70 parts by weight of chloroprene rubber, preferably 55-65 parts by weight of chloroprene rubber, and more preferably 60 parts by weight of chloroprene rubber. The source of the chloroprene rubber of the present invention is not particularly limited, and commercially available products known to those skilled in the art may be used, for example, CR224 and CR240 produced by shanxi synthetic rubber group, a90, M40, PM40 produced by japanese electric chemical industry, and the like.
Based on the weight parts of the chloroprene rubber, the composite rubber water delivery plate comprises 30-50 parts of ethylene propylene diene monomer, preferably 35-45 parts, and more preferably 40 parts. The source of the ethylene propylene diene monomer is not particularly limited in the present invention, and commercially available products known to those skilled in the art may be used.
In the invention, the chloroprene rubber or the Xinping rubber has the characteristics of oil resistance, heat resistance, combustion resistance, corrosion resistance, high tensile strength and high elongation, and has reversible crystallinity, and the defect that the chloroprene rubber has poor cold resistance and cannot adapt to the changeable temperature environment of the desert; the ethylene propylene diene monomer rubber has excellent ozone oxidation resistance, cold resistance and erosion and aging resistance, and has low density and high filling performance. The chloroprene rubber and the ethylene propylene diene monomer rubber have larger solubility parameter difference and cannot be directly shared, and the chloroprene rubber and the ethylene propylene diene monomer rubber generate double bond crosslinking by adding the activating agent and the accelerating agent, so that the performance advantages of the chloroprene rubber and the ethylene propylene diene monomer rubber are maintained, the high and low temperature resistance and the outdoor aging resistance of the product are improved, and the composite rubber water delivery plate is more durable.
Based on the weight parts of the chloroprene rubber, the composite rubber water delivery board comprises 90-110 parts of rubberized cord fabric, preferably 95-105 parts of rubberized cord fabric, and more preferably 100 parts of rubberized cord fabric. In the invention, the rubberized cord fabric is preferably waste leftover materials of rubberized cord fabrics used when tires are manufactured in a tire factory, also called gummed cord fabric for tires, the cord fabric is a framework fabric for tires woven by using strong plied yarns as warps and medium and fine single yarns as wefts, the warps are arranged closely, the wefts are arranged sparsely, and the shape of the cord fabric is similar to that of a cord fabric; the dipping is to adopt natural latex or neoprene to soak or coat the surface of the cord fabric, so as to achieve the effect of bonding with rubber at the later stage.
The invention has no special requirement on the material type of the rubberized cord fabric, and the rubberized cord fabric woven by using polyester fibers, polyamide fibers, polyvinyl alcohol fibers, steel wires and other materials can be used, and is preferably rubberized cord fabric woven by polyester fibers (such as terylene) or polyamide fibers (such as nylon) with good tensile resistance and light weight. The rubberized cord fabric is generally used as a framework of rubber products such as tires and the like, is an important material influencing the performance and the service life of the tires, and has the advantages of high strength, high temperature resistance, fatigue resistance, stable structure and capability of being bonded with rubber; the rubberized cord fabric is preferably leftover materials of tire factories, rubberized cord fabrics used by all tire enterprises are CCC certified products, and the quality is qualified, so that the rubberized cord fabric can be directly used.
In the invention, the breaking strength of the rubberized cord fabric is preferably more than 79cN/dtex, the temperature resistance is preferably more than 120 ℃, and the invention has no special requirements on the shape of the waste rubberized cord fabric leftover materials and can be in the shapes of sheets, strips, triangles and the like.
In the invention, the rubber-coated cord fabric can improve the combination of chloroprene rubber and ethylene propylene diene monomer rubber, plays a role of a framework and improves the tensile strength and the wind uncovering resistance of the composite rubber water delivery plate. In the invention, the relative density of the rubber is the ratio of the mass of the rubber in unit volume to the mass of the pure water in the same volume at 4 ℃, the relative density of the chloroprene rubber is 1.23, the relative density of the rubberized cord fabric is 0.5, and the mass of the composite rubber water conveying plate can be greatly reduced after the rubberized cord fabric is added, so that the composite rubber water conveying plate is convenient to transport and install.
Based on the weight parts of the chloroprene rubber, the composite rubber water delivery plate comprises 4-6 parts of zinc oxide, preferably 4.5-5.5 parts, and more preferably 5 parts.
Based on the weight parts of the chloroprene rubber, the composite rubber water delivery plate comprises 1-3 parts of stearic acid, preferably 1.5-2.5 parts, and more preferably 2 parts.
Based on the weight parts of the chloroprene rubber, the composite rubber water delivery plate comprises 3-5 parts of light magnesium oxide, preferably 3.5-4.5 parts, and more preferably 4 parts.
Based on the weight parts of the chloroprene rubber, the composite rubber water delivery plate comprises 0.6-1.4 parts of NA-22 accelerator, preferably 0.8-1.2 parts, and more preferably 1 part.
The composite rubber water delivery plate comprises 0.6-1.4 parts of an anti-aging agent CTU, preferably 0.8-1.2 parts, and more preferably 1 part by weight of chloroprene rubber.
In the invention, zinc oxide, stearic acid and light magnesium oxide are active agents, zinc oxide and stearic acid can form zinc stearate to drive double bond crosslinking of other accelerators and rubber, light magnesium oxide plays a role of an acid-absorbing agent and an accelerator in the composite rubber and plays a role of acid absorption, vulcanization crosslinking and scorch prevention in the gluing process of chloroprene rubber; NA-22 is a vulcanization accelerator shared by chloroprene rubber and ethylene propylene diene monomer, and NA-22 can perform vulcanization on chloroprene rubber and also perform vulcanization on ethylene propylene diene monomer; CTU is an antioxidant. The invention has no special requirements on the sources of zinc oxide, stearic acid, light magnesium oxide, promoter NA-22 and antioxidant CTU, and can adopt commercial products well known to those skilled in the art.
In the invention, the thickness of the composite rubber water delivery plate is preferably 1-3 mm, more preferably 1.5-2.5 mm, and most preferably 2 mm.
The invention provides a preparation method of the composite rubber water delivery plate, which comprises the following steps:
(1) respectively plasticating chloroprene rubber and ethylene propylene diene monomer rubber to obtain plasticated chloroprene rubber and plasticated ethylene propylene diene monomer rubber;
(2) carrying out first banburying on the rubberized cord fabric to obtain the banburied rubberized cord fabric;
(3) mixing the rubberized cord fabric subjected to internal mixing in the step (2), the chloroprene rubber subjected to plastication in the step (1) and the ethylene propylene diene monomer subjected to plastication, and then sequentially carrying out second internal mixing and thermal mixing to obtain mixed rubber;
(4) calendering the mixed rubber obtained in the step (3) to obtain a rubber sheet;
(5) vulcanizing and molding the rubber sheet obtained in the step (4) to obtain a composite rubber water delivery plate;
the step (1) and the step (2) have no time sequence limitation.
According to the invention, chloroprene rubber and ethylene propylene diene monomer rubber are plasticated to obtain plasticated chloroprene rubber and plasticated ethylene propylene diene monomer rubber. In the invention, before plastication of the chloroprene rubber and the ethylene propylene diene monomer, rubber cutting is preferably further included, the chloroprene rubber and the ethylene propylene diene monomer are dispersed through the rubber cutting, and the batching, plastication and mixing processing are convenient.
After rubber cutting, the chloroprene rubber and the ethylene propylene diene monomer rubber are plasticated respectively. In the invention, the plastication temperature is preferably 50-80 ℃ independently, and more preferably 60-70 ℃. In the invention, plastication can reduce the elasticity of chloroprene rubber and ethylene propylene diene monomer rubber, increase plasticity and obtain proper fluidity so as to meet the requirements of the processing processes of mixing, calendering and vulcanizing.
The invention carries out first banburying on the rubberized cord fabric to obtain the banburied rubberized cord fabric. In the present invention, the first banburying time is preferably 5 to 7 minutes, and more preferably 6 minutes.
The rubber-coated cord fabric after banburying, the chloroprene rubber after plastication and the ethylene propylene diene monomer after plastication are mixed and then subjected to secondary banburying and thermal refining in sequence to obtain the rubber compound. In the invention, the second banburying time is preferably 5-7 minutes, and more preferably 6 minutes; the temperature of the cooking is preferably 40-50 ℃, more preferably 45 ℃, and the time of the cooking is preferably 5-7 minutes, more preferably 6 minutes. The device for banburying is not particularly limited in the invention, and banburying can be performed by using a banbury mixer well known to those skilled in the art, and the device for hot mixing is not particularly limited in the invention, and hot mixing can be performed by using an open mill well known to those skilled in the art.
After the rubber compound is obtained, the rubber compound is calendered to obtain the rubber sheet. In the invention, the rolling size of the film is preferably 1100mm in width, 1-3 mm in thickness and 10000mm in length, the thickness of the film is more preferably 1.5-2.5 mm, and the most preferably 2 mm. The calendering device is not particularly limited in the invention, and a calender well known to those skilled in the art can be adopted, specifically, the calender comprises two rollers, namely an L-shaped calender; the invention has no special requirements on the calendering parameters, and can meet the size of the rubber sheet of the calendered rubber compound.
After the rubber sheet is obtained, the rubber sheet is vulcanized and molded to obtain the composite rubber water delivery plate. In the present invention, the temperature of the vulcanization molding is preferably 145. + -.5 ℃, more preferably 145 ℃, the pressure is preferably 15. + -. 0.5MPa, more preferably 15MPa, and the vulcanization speed is preferably 0.5. + -. 0.01m/s, more preferably 0.5 m/s; the apparatus for said vulcanization is not particularly limited in the present invention, and a vulcanizing machine known to those skilled in the art, specifically, a drum vulcanizing machine, may be used.
After the vulcanization forming is finished, the vulcanized product is preferably cooled, trimmed and finished to obtain the composite rubber water delivery plate.
The invention provides an application of the composite rubber water delivery plate in the scheme or the composite rubber water delivery plate prepared by the preparation method in the technical scheme as a water delivery material of a water delivery channel. The application method of the composite rubber water delivery plate has no special requirements, and the composite rubber water delivery plate can be applied according to a method well known by the technical personnel in the field to obtain a water delivery canal.
In a specific embodiment of the present invention, the application method of the composite rubber water transport plate preferably comprises the following steps:
digging a groove according to construction requirements, cutting the composite rubber water delivery plate and then laying;
polishing the butt joints at the two ends of the composite rubber water delivery plate;
bonding the butt joint of the composite rubber water delivery plate by using an adhesive, and then tamping the composite rubber water delivery plate by using a rubber hammer;
holes are drilled on two sides of the composite rubber water delivery plate, and stainless steel bolts, nylon ropes and weights are used for fixing.
In the invention, preferably, the butt joint port of the composite rubber water conveying plate is polished by a steel wire brush, the polishing width is not less than 10 cm, and dust on the surface of the butt joint port is cleaned after polishing; the weight for fixing is preferably stone, wood stick, iron stick and the like, and the weight is dug, buried and tamped to play a role in permanent fixing and improve the wind uncovering resistance of the water delivery channel.
The composite rubber water transport plate and the preparation method thereof provided by the present invention will be described in detail with reference to the following examples, which should not be construed as limiting the scope of the present invention.
The neoprene, the epdm, the rubberized cord fabric, the zinc oxide, the stearic acid, the light magnesium oxide, the NA-22 accelerator, and the antioxidant CTU used in examples 1 to 3 are all commercially available, wherein the rubberized cord fabric is waste leftover materials of a tire factory, a weaving material of the rubberized cord fabric is terylene (one type of polyester fiber), and the rubberized cord fabric used in the present invention is obtained by rubberizing the terylene cord fabric with natural latex.
Example 1
The composite rubber water delivery plate is prepared from the following raw materials in parts by weight:
60 parts of chloroprene rubber, 40 parts of ethylene propylene diene monomer, 100 parts of rubberized cord fabric, 5 parts of zinc oxide, 2 parts of stearic acid, 4 parts of light magnesium oxide, 1 part of NA-22 accelerator and 1 part of antioxidant CTU;
the preparation method of the composite rubber water delivery plate comprises the following steps:
weighing the raw materials, mixing chloroprene rubber and ethylene propylene diene monomer after mastication at 65 ℃ with rubberized cord fabric subjected to first internal mixing for 6 minutes, carrying out second internal mixing for 6 minutes, then carrying out thermal mixing at 45 ℃ for 6 minutes to obtain mixed rubber, calendering the mixed rubber in two roller L-shaped calenders to obtain rubber sheets with the width of 1100mm, the thickness of 2mm and the length of 10000mm, vulcanizing the rubber sheets in a drum vulcanizer with the temperature of 145 ℃, the pressure of 15MPa and the speed of 0.49 m/s, and then carrying out conventional cooling, trimming and finishing to obtain the composite rubber water delivery plate.
Example 2
The composite rubber water delivery plate is prepared from the following raw materials in parts by weight:
50 parts of chloroprene rubber, 30 parts of ethylene propylene diene monomer, 110 parts of rubberized cord fabric, 4 parts of zinc oxide, 1 part of stearic acid, 3 parts of light magnesium oxide, 0.6 part of NA-22 accelerator and 0.6 part of antioxidant CTU;
the preparation method of the composite rubber water delivery plate comprises the following steps:
weighing the raw materials, mixing chloroprene rubber and ethylene propylene diene monomer after mastication at 65 ℃ with rubberized cord fabric subjected to first internal mixing for 6 minutes, carrying out second internal mixing for 6 minutes, then carrying out thermal mixing at 45 ℃ for 6 minutes to obtain mixed rubber, calendering the mixed rubber in two roller L-shaped calenders to obtain rubber sheets with the width of 1100mm, the thickness of 2mm and the length of 10000mm, vulcanizing the rubber sheets in a drum vulcanizer with the temperature of 145 ℃, the pressure of 15MPa and the speed of 0.49 m/s, and then carrying out conventional cooling, trimming and finishing to obtain the composite rubber water delivery plate.
Example 3
The composite rubber water delivery plate is prepared from the following raw materials in parts by weight:
70 parts of chloroprene rubber, 50 parts of ethylene propylene diene monomer, 90 parts of rubberized cord fabric, 6 parts of zinc oxide, 3 parts of stearic acid, 5 parts of light magnesium oxide, 1.4 parts of NA-22 accelerator and 1.4 parts of antioxidant CTU;
the preparation method of the composite rubber water delivery plate comprises the following steps:
weighing the raw materials, mixing chloroprene rubber and ethylene propylene diene monomer after mastication at 65 ℃ with rubberized cord fabric subjected to first internal mixing for 6 minutes, carrying out second internal mixing for 6 minutes, then carrying out thermal mixing at 45 ℃ for 6 minutes to obtain mixed rubber, calendering the mixed rubber in two roller L-shaped calenders to obtain rubber sheets with the width of 1100mm, the thickness of 2mm and the length of 10000mm, vulcanizing the rubber sheets in a drum vulcanizer with the temperature of 145 ℃, the pressure of 15MPa and the speed of 0.49 m/s, and then carrying out conventional cooling, trimming and finishing to obtain the composite rubber water delivery plate.
Example 4
In this embodiment, the raw material ratio and the preparation method of embodiment 1 are used, and the only difference is that the woven material of the rubberized fabric is nylon fiber (one kind of polyamide fiber).
Comparative example 1
This comparative example uses the raw material ratios and preparation method of example 1, the only difference being that no rubberized cord fabric was used in the raw materials.
Application example
Digging a 10 m-long inverted trapezoidal groove as a water delivery channel, wherein the width of the bottom of the groove is 0.5m, the width of each side slope is 1m, the included angle between each side slope and the horizontal line of the bottom is 45 degrees, laying a cut composite rubber water delivery plate on the side slope and the bottom of the groove, placing a thick wood plate or channel steel below the joint of the water delivery plate, polishing by using a steel wire brush, and polishing to a position with the polishing width not less than 10 centimeters; blending and stirring the adhesive uniformly according to the specification, cleaning dust at the position, needing to be bonded, of the composite rubber water delivery plate by using a brush, brushing the adhesive uniformly at the polished position, and bonding when the composite rubber water delivery plate is not sticky by touching with hands after being dried for a few minutes; aligning two sides, putting hands together after aligning, attaching from the middle to two sides, and tamping with a rubber hammer; drilling a hole at one centimeter of one side of the water delivery plate on the side slope, fixing the water delivery plate by using a stainless steel bolt, fastening the bolt by using a thin nylon rope, and fixing the thin nylon rope along with a wood stick to be deeply buried.
The composite rubber water transport plates prepared in examples 1-4 and comparative example 1 were measured for thickness by an XUT thickness gauge, and the weight, tensile strength and aging resistance of the products were measured one by one, and the measurement results are shown in Table 1.
TABLE 1 comparison table of composite rubber water delivery board performance
In Table 1, the weight of the product was 1m as measured from 2mm thick compounded rubber water-transporting sheets prepared in examples 1 to 4 and comparative example 12Area (d) was measured as weight data.
The tensile properties in Table 1 were measured using a CZ-40000 electronic universal tester according to the GB/T528-2009 tensile stress strain Properties of vulcanized rubber or thermoplastic rubber.
The aging time test in Table 1 attempted in a number of ways, including testing using the GB/T3512-2001 hot air accelerated aging and heat resistance test method for vulcanized rubber or thermoplastic rubber; the dynamic tensile test method of the ozone aging resistance test of the vulcanized rubber of GB/T13642-1992 is adopted for determination; the determination is carried out by adopting a GB/T15255-1994 vulcanized rubber artificial weathering test method (carbon arc lamp).
As can be seen from the comparison of the data in the above examples and Table 1, after a plurality of rubber aging performance tests, the composite rubber water transport plate products prepared in the examples 1-3 and the comparative example 1 of the invention have no obvious aging phenomenon and obvious performance reduction; the product of comparative example 1 without the addition of the rubberized cord fabric has the heaviest quality, poorer tensile resistance and poor wind uncovering resistance, while the product of examples 3, 1 and 2 has the weight gradually reduced with the gradual increase of the proportion of the rubberized cord fabric, but the tensile resistance is better and better.
It can be seen that the composite rubber water delivery plate provided by the embodiments 1-3 of the invention has the advantages of light weight, good tensile resistance, stronger weather resistance and wind uncovering resistance, and good application value when being laid on a water delivery channel in desert.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The composite rubber water delivery plate is characterized by comprising the following components in parts by weight: 50-70 parts of chloroprene rubber, 30-50 parts of ethylene propylene diene monomer, 90-110 parts of rubberized cord fabric, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 3-5 parts of light magnesium oxide, 0.6-1.4 parts of NA-22 accelerator and 0.6-1.4 parts of antioxidant CTU;
the rubberized cord fabric is formed by interweaving cord threads in a warp-weft mode, and the cord threads are made of polyester fibers or polyamide fibers;
the breaking strength of the rubberized cord fabric is more than 79cN/dtex, and the temperature resistance strength is more than 120 ℃;
the thickness of the composite rubber water delivery plate is 1-3 mm.
2. The composite rubber water transport plate of claim 1, wherein the composite rubber water transport plate is composed of the following components in parts by weight: 60 parts of chloroprene rubber, 40 parts of ethylene propylene diene monomer, 100 parts of rubberized cord fabric, 5 parts of zinc oxide, 2 parts of stearic acid, 4 parts of light magnesium oxide, 1 part of NA-22 accelerator and 1 part of antioxidant CTU.
3. The preparation method of the composite rubber water delivery plate as claimed in any one of claims 1 to 2, which is characterized by comprising the following steps:
(1) respectively plasticating chloroprene rubber and ethylene propylene diene monomer rubber to obtain plasticated chloroprene rubber and plasticated ethylene propylene diene monomer rubber;
(2) carrying out first banburying on the rubberized cord fabric to obtain the banburied rubberized cord fabric;
(3) mixing the rubberized cord fabric subjected to internal mixing in the step (2), the chloroprene rubber subjected to plastication in the step (1) and the ethylene propylene diene monomer subjected to plastication, and then sequentially carrying out second internal mixing and thermal mixing to obtain mixed rubber;
(4) calendering the mixed rubber obtained in the step (3) to obtain a rubber sheet;
(5) vulcanizing and molding the rubber sheet obtained in the step (4) to obtain a composite rubber water delivery plate;
the step (1) and the step (2) have no time sequence limitation.
4. The preparation method according to claim 3, wherein the plastication temperature of the chloroprene rubber and the ethylene propylene diene monomer rubber in the step (1) is 50-80 ℃ independently.
5. The preparation method according to claim 3, wherein the temperature of the cooking in the step (3) is 40 to 50 ℃ and the time of the cooking is 5 to 7 minutes.
6. The method according to claim 3, wherein the vulcanization molding temperature is 145 ± 5 ℃, the pressure is 15 ± 0.5MPa, and the vulcanization speed is 0.5 ± 0.01 m/s.
7. Use of the composite rubber water transport plate according to any one of claims 1 to 2 or the composite rubber water transport plate prepared by the preparation method according to any one of claims 3 to 6 as a water transport material for a water transport canal.
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Effective date of registration: 20210525 Address after: 065200 Xian Ren Xi Da Jie, he Shi Industrial New District, Langfang City, Hebei Province Applicant after: SANHE GREAT WALL RUBBER Co.,Ltd. Address before: 065000 Xianren West Street, Sanhe Industrial New District, Langfang City, Hebei Province Applicant before: Liu Rong |
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