CN109280316B - Environment-friendly water supply hose without increasing total organic carbon content in water body and preparation method thereof - Google Patents
Environment-friendly water supply hose without increasing total organic carbon content in water body and preparation method thereof Download PDFInfo
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- CN109280316B CN109280316B CN201811048377.9A CN201811048377A CN109280316B CN 109280316 B CN109280316 B CN 109280316B CN 201811048377 A CN201811048377 A CN 201811048377A CN 109280316 B CN109280316 B CN 109280316B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C—CHEMISTRY; METALLURGY
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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Abstract
The invention discloses an environment-friendly water supply hose without increasing the total organic carbon content in a water body, which is characterized by consisting of a hydrogenated styrene-butadiene block copolymer (SEBS), polypropylene (PP), a heat stabilizer, a dispersant and a filler, wherein the mass ratio of the components is as follows: SEBS: 100 parts of (A); PP: 10-75 parts; thermal stabilizer: 0.5-2.5 parts; dispersing agent: 0.3-7.5 parts; filling agent: 0.5-75 parts. The invention also provides a preparation method of the water supply hose. The water supply hose prepared by the invention can effectively inhibit organic matters in the hose body from migrating into a water body, meets the requirement of safety standard, and has good environmental protection performance.
Description
Technical Field
The invention relates to the technical field of water supply hoses for connecting a water supply network and water using equipment, in particular to an environment-friendly water supply hose without increasing the content of total organic carbon in water.
Background
The Total Organic Carbon (TOC) is the total carbon content of the organic matters in the water, so that the pollution degree of the organic matters to the water body can be completely reflected. Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) are indirect methods for determining organic matters in water, all the organic matters are composed of organic carbon, and carbon released by the organic matters in water during oxidation is combined with oxygen to generate CO2Therefore, TOC is a good method for directly measuring organic pollutants in water.
The existing water supply pipe network and the connecting hose of water using equipment are all produced by soft materials such as soft PVC, EPDM and the like, and various plasticizers and lubricants contained in the hose are easy to migrate into drinking water due to low molecules to cause secondary pollution. The connecting hose between the existing water supply network and the water using equipment has the following defects: the environment is not protected, secondary pollution is caused, the safety standard requirement cannot be met, and the environmental protection performance is poor.
Disclosure of Invention
In order to overcome the defects that the prior water supply pipe network and the water using equipment connecting hose cause secondary pollution of water and the environmental protection performance is poor and can not meet the safety standard, the invention provides the water supply hose which can effectively inhibit organic matters in a pipe body from migrating into the water, meets the safety standard requirement and has good environmental protection performance.
In order to achieve the purpose, the method is realized by the following technical means:
the environment-friendly water supply hose without increasing the total organic carbon content in water consists of hydrogenated styrene-butadiene block copolymer (SEBS), polypropylene (PP), a heat stabilizer, a dispersant and a filler, and the weight ratio of the components is as follows:
SEBS: 100 parts of (A);
PP: 10-75 parts;
thermal stabilizer: 0.5-2.5 parts;
dispersing agent: 0.3-7.5 parts;
filling agent: 0.5 to 75 portions
The SEBS is a food-grade polymer which is not oil-filled.
The PP is a food grade polymer.
The heat stabilizer is an antioxidant which can effectively inhibit thermal oxidation degradation at a high temperature. The antioxidant is prepared by compounding an antioxidant 1010 and an auxiliary antioxidant 168 according to a ratio of 1: 1.
The dispersant is an inorganic mineral anticaking agent. The anticaking agent is fumed silica which has porosity, no toxicity, no smell and high temperature resistance. Meanwhile, the product has chemical inertia and special thixotropy, and can obviously improve the tensile strength, tear resistance and wear resistance of the product. As an anticaking agent, improves the free-flowing properties of the powder.
The filler is nano calcium carbonate without surface treatment.
The invention also provides a method for preparing the water supply hose, which comprises the following steps:
1) weighing SEBS, PP, a heat stabilizer, a dispersant and a filler according to the raw material ratio;
2) putting the weighed raw materials into a high-speed mixer, stirring at a high speed for 15-20 min, and discharging for later use;
3) adding the mixed material obtained in the step 2) into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is 170-200 ℃, and the head temperature is 190 ℃;
4) and (3) carrying out vacuum forming extrusion on the product obtained in the step 3) in an extruder at 190-220 ℃, cooling and forming in cooling water to obtain the water supply hose, or carrying out vacuum injection molding on the product obtained in the step 3) in a mold at 190-220 ℃, keeping the temperature for 2-8 hours under a vacuum condition, cooling and curing to obtain the water supply hose. It should be noted in particular that injection moulding is only suitable for use in situations where the water supply hose required by the customer is relatively short.
Compared with the prior art, the invention has the advantages that: the SEBS selects a high-purity food-grade polymer without oil charge, does not add any grease organic matter with a plasticizing effect, and controls organic matters in a migration water body. The PP is selected from food-grade polymers, needs to be approved by the FDA and the LFGB in Germany, can be applied to food packaging, and can effectively reduce the migration of organic matters. The heat stabilizer selected by the invention conforms to FDA and LFGB standards, is environment-friendly, nontoxic and odorless, has low heavy metal content, and meets the requirement of the water supply hose on the heavy metal content. Because the SEBS can not be filled with oil, the melt viscosity is high, and the SEBS can not be processed and molded, the viscosity of the material when being melted needs to be reduced by adding the inorganic mineral matter dispersing agent which does not contain heavy metal harmful to human bodies and has no odor and no taste. The invention selects the nano calcium carbonate without surface treatment as the filler, the calcium carbonate can play a role of a framework in the plastic product, the material cost can be reduced, the nano calcium carbonate has larger effect on the size stability of the plastic product, and the impact strength of the product can be obviously improved.
Drawings
FIG. 1 is a flow chart of the process for preparing the water hose according to the present invention.
Detailed Description
The invention will be further described by means of specific embodiments, which are given by way of illustration only and are not intended to limit the scope of the invention.
Example 1
According to the process flow shown in the figure 1, weighing each raw material according to the mixture ratio of 100 parts of hydrogenated styrene-butadiene block copolymer (SEBS), 70 Parts of Polypropylene (PP), 10101.6 parts of antioxidant, 1680.8 parts of antioxidant, 5 parts of anticaking agent and 5 parts of nano calcium carbonate, adding the raw materials into a high-speed mixer, stirring at a high speed for 15min, and discharging for later use; then adding the mixed materials into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is 170 ℃, and the head temperature is 190 ℃; and (3) carrying out vacuum shaping extrusion on the extruded product in an extruder at 190 ℃, and cooling and shaping in cooling water to obtain the water supply hose A.
The hose A thus obtained was subjected to heavy metal water dissolution test according to the test method of BS6920-2000 standard, and the results are shown in Table 1. It can be seen from the table that the heavy metal content of the obtained hose A does not exceed the standard.
Table 1: content of heavy metal dissolved out
The resulting tube A was tested for the cytotoxin of the examples according to the test method of BS6920-2000 standard, and the results are shown in Table 2. It can be seen that the hose a of this embodiment is non-toxic.
Table 2: cytotoxicity test
| Extract of plant | Cell growth |
| Blank control | Cell health |
| Zinc sulfate solution | Cell death |
| Sample of this example | Cell health |
The hose A obtained was subjected to the tests for odor, taste, TOC of the examples according to the test method of the German KTW standard, and the results are shown in Table 3.
Table 3: odor, taste, TOC test
It can be seen from table 3 that the hose a obtained in this example still satisfies the requirements of odor, taste and TOC detection after ten days of cycle testing.
Example 2
According to the process flow shown in the figure 1, weighing each raw material according to the mixture ratio of 100 parts of hydrogenated styrene-butadiene block copolymer (SEBS), 30 Parts of Polypropylene (PP), 10101.6 parts of antioxidant, 1680.8 parts of antioxidant, 3 parts of anticaking agent and 3 parts of nano calcium carbonate, adding the raw materials into a high-speed mixer, stirring at a high speed for 17min, and discharging for later use; then adding the mixed materials into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is 185 ℃, and the temperature of a machine head is 190 ℃; and (3) carrying out vacuum shaping extrusion on the extruded product in an extruder at the temperature of 200 ℃, and cooling and shaping in cooling water to obtain the water supply hose B.
The hose B was subjected to heavy metal water dissolution test according to the test method of BS6920-2000 standard, and the results are shown in Table 4. It can be seen from the table that the contents of the heavy metal dissolved substances in the obtained hose B do not exceed the standard.
Table 4: content of heavy metal dissolved out
The resulting tube B was tested for the cytotoxin of the examples according to the test method of BS6920-2000 standard, and the results are shown in Table 5. It can be seen that the hose B obtained in this example is non-toxic.
Table 5: cytotoxicity test
| Extract of plant | Cell growth |
| Blank control | Cell health |
| Zinc sulfate solution | Cell death |
| Sample of this example | Cell health |
The hoses thus obtained were tested for odor, taste, TOC according to the test method of the german KTW standard, and the results are shown in table 6.
Table 6: odor, taste, TOC test
It can be seen from table 6 that the hose obtained in this example still meets the requirements for odor, taste and TOC detection after ten days of cycle testing.
Example 3
According to the working flow of the figure 1, weighing each raw material according to the mixture ratio of 100 parts of hydrogenated styrene-butadiene block copolymer (SEBS), 75 Parts of Polypropylene (PP), 10101.6 parts of antioxidant, 1680.8 parts of antioxidant, 7.5 parts of anticaking agent and 7.5 parts of nano calcium carbonate, adding the raw materials into a high-speed mixer, stirring at high speed for 20min, and discharging for later use; then adding the mixed materials into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is 200 ℃, and the head temperature is 190 ℃; the extruded product was vacuum-injected into a mold at 220 ℃ and maintained at this temperature under vacuum for 8 hours, and cooled to solidify to obtain a water hose C.
The hose C thus obtained was subjected to heavy metal water dissolution test according to the test method of BS6920-2000 standard, and the results are shown in Table 7. It can be seen from the table that the contents of the heavy metal dissolved matters in the obtained hose C do not exceed the standard.
Table 7: content of heavy metal dissolved out
The resulting tube C was tested for the cytotoxin of the examples according to the test method of BS6920-2000 standard, and the results are shown in Table 8. From this, it can be seen that the hose C obtained in this example is non-toxic.
Table 8: cytotoxicity test
The hose C thus obtained was subjected to the test of odor, taste, TOC of the examples according to the test method of the German KTW standard, and the results are shown in Table 9.
Table 9: odor, taste, TOC test
It can be seen from table 9 that the hose C obtained in this example still satisfies the requirements for odor, taste and TOC detection after ten days of cycle testing.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (1)
1. The preparation method of the environment-friendly water supply hose without increasing the total organic carbon content in water is characterized in that the environment-friendly water supply hose is composed of hydrogenated styrene-butadiene block copolymer (SEBS), polypropylene (PP), a heat stabilizer, a dispersant and a filler, and the mass ratio of the components is as follows:
SEBS: 100 parts of (A);
PP: 10-75 parts;
thermal stabilizer: 0.5-2.5 parts;
dispersing agent: 0.3-7.5 parts;
filling agent: 0.5-7.5 parts;
the SEBS is a food-grade polymer which is not filled with oil;
the PP is a food-grade polymer;
the heat stabilizer is an antioxidant capable of effectively inhibiting thermal oxidation degradation at a high temperature, and is specifically formed by compounding an antioxidant 1010 and an auxiliary antioxidant 168 according to a ratio of 1: 1;
the dispersing agent is an inorganic mineral matter anticaking agent, and the anticaking agent is fumed silica;
the filler is nano calcium carbonate without surface treatment;
the preparation method comprises the following steps:
1) weighing SEBS, PP, a heat stabilizer, a dispersant and a filler according to the raw material ratio;
2) putting the weighed raw materials into a high-speed mixer, stirring at a high speed for 15-20 min, and discharging for later use;
3) adding the mixed material obtained in the step 2) into a double-screw extruder for extrusion granulation, wherein the extrusion temperature is 170-200 ℃, and the head temperature is 190 ℃;
4) and (3) carrying out vacuum forming extrusion on the product obtained in the step 3) in an extruder at 190-220 ℃, cooling and forming in cooling water to obtain the water supply hose, or carrying out vacuum injection molding on the product obtained in the step 3) in a mold at 190-220 ℃, keeping the temperature for 2-8 hours under a vacuum condition, cooling and curing to obtain the water supply hose.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811048377.9A CN109280316B (en) | 2018-09-10 | 2018-09-10 | Environment-friendly water supply hose without increasing total organic carbon content in water body and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811048377.9A CN109280316B (en) | 2018-09-10 | 2018-09-10 | Environment-friendly water supply hose without increasing total organic carbon content in water body and preparation method thereof |
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| CN109280316B true CN109280316B (en) | 2021-05-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120167802A1 (en) * | 2009-09-07 | 2012-07-05 | Huh Jung Do | Temperature-Adjusted and Modified Recycled ASCON Composition for Reusing 100% of Waste ASCON for Road Pavement, and Method for Manufacturing Same |
| CN107973996A (en) * | 2017-12-08 | 2018-05-01 | 广东技塑新材料股份有限公司 | A kind of low smell and TPV material and preparation method thereof with sterilizing function |
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- 2018-09-10 CN CN201811048377.9A patent/CN109280316B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120167802A1 (en) * | 2009-09-07 | 2012-07-05 | Huh Jung Do | Temperature-Adjusted and Modified Recycled ASCON Composition for Reusing 100% of Waste ASCON for Road Pavement, and Method for Manufacturing Same |
| CN107973996A (en) * | 2017-12-08 | 2018-05-01 | 广东技塑新材料股份有限公司 | A kind of low smell and TPV material and preparation method thereof with sterilizing function |
Non-Patent Citations (1)
| Title |
|---|
| 《医用输液器软管TPE材料的生产配方研究》;李云豹等;《中国医疗器械信息》;20140325(第03期);第67-70页 * |
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Effective date of registration: 20200624 Address after: No.46, Zhenxing Road, Jianshan town, Pan'an County, Jinhua City, Zhejiang Province Applicant after: Jianshan Xinxing Plastic Factory, Pan'an County, Zhejiang Province Address before: 322300 Jianshan Town Industrial Zone, Pan'an County, Jinhua City, Zhejiang Province Applicant before: Zhou Jinbiao |
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