CN1316328A - Technology for making water supply pipe with nm-class antibacterial plastics - Google Patents
Technology for making water supply pipe with nm-class antibacterial plastics Download PDFInfo
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- CN1316328A CN1316328A CN 01105328 CN01105328A CN1316328A CN 1316328 A CN1316328 A CN 1316328A CN 01105328 CN01105328 CN 01105328 CN 01105328 A CN01105328 A CN 01105328A CN 1316328 A CN1316328 A CN 1316328A
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Abstract
A process for preparing water supply pipe of antibacteria nm-class plastics includes such steps as proportionally premixing nm-class material with titanate, proportioned mixing with antibacterial agent and resin, extrusion granulating, baking the mother particles, dewatering, mixing them with resin, and extruding out to form a pipe. Said water supply pipe features high mechanical performance and thermal stability, smooth surface, and improved anti-ageing nature.
Description
The present invention relates to be used for material of construction, more specifically refer to a kind of technology for making water supply pipe with nm-class antibacterial plastics.
In material of construction, plastics tubing is as the water service pipe of new generation of galvanized steel pipe substitute, once huge leap has taken place on feed-water quality, but plastics tubing is as water service pipe, especially is to cause easily bacterium growing at the water service pipe internal surface as tap water to the shortcoming of branch's feedwater piping of user.According to World Health Organization's investigation result in 1996, human 80% disease was relevant with drinking-water, and particularly with relevant by the drinking-water of courses of infection, about disease more than 60% is propagated by drinking-water.Solve traditional plastic water supply pipe at present the drinking water pollution way is mainly adopted ozone sterilization and increases circulating line, reduce water in the residence time of feedwater piping, but make the cost of tap water significantly rise again like this.This shows that the antibiotic plastic water service pipe of Development of New Generation is only bacterium that basic solution plastic water supply pipe the grown approach to human infection.
For this reason, the objective of the invention is shortcoming, propose a kind of technology for making water supply pipe with nm-class antibacterial plastics at the existence of conventional plastic water service pipe.
To achieve these goals, the present invention adopts following technical scheme, and this technology for making water supply pipe with nm-class antibacterial plastics may further comprise the steps successively:
A carries out pre-mixing in proportion with nano material, phthalate, obtains premix;
B will be mixed with antiseptic-germicide and resin in proportion by the resulting premix of above-mentioned steps a more again, obtain compound;
C will place forcing machine to extrude by the resulting compound of above-mentioned steps b and make material, obtain the nano composite antibacterial masterbatch;
D is dried the resulting nano composite antibacterial masterbatch of above-mentioned steps c, dewater;
E, the nano composite antibacterial masterbatch after will drying at last, dewatering mixes in proportion with resin again, places forcing machine to carry out extrusion molding after the mixing again.
Among the described step a, nano material is selected titanium dioxide for use, and the ratio of mixture of nano material and phthalate is 50: 1 to 100: 1;
Among the described step b, the ratio of said premix, antiseptic-germicide and resin was respectively 10: 20: 100;
Among the described step e, the ratio of said masterbatch and resin is 1: 20.
Said antiseptic-germicide and resin are selected zinc oxide and polypropylene respectively for use;
When making premix, add a spot of dispersant liq paraffin again.
Among described step a and the step b, pre-mixing temperature and pre-mixing temperature are about 20 degree Celsius;
In the described steps d, the temperature that the nano composite antibacterial masterbatch is dried is about 80 degree Celsius.
The present invention has adopted the above-mentioned making method that nano material and antiseptic-germicide is used for plastic water supply pipe, because nano material itself strengthens especially significantly, increase thread, advantage such as uvioresistant, make plastic water supply pipe mechanical property, surface appearance, thermostability and ageing resistance be improved significantly; Owing to the use of antiseptic-germicide, changed people's idea and the quality that improved tap water traditional to water service pipe simultaneously, concrete advantage embodies from the following aspects,
1. temperature tolerance:＞300 ℃;
2. persistence: under normal service condition, the germ resistance life-span is more than 50 years, with the same life-span of water service pipe;
3. high efficiency: consumption is compared with non-antimicrobial form plastic water supply pipe less than 1%, increases cost only in 10%;
4. wholesomeness: nontoxic, tasteless, do not move out, meet relative national standards;
5. germ resistance: under the normal temperature to removing from office blue formula positive and negative bacterium: all effective as intestinal bacteria, staphylococcus aureus, streptococcus pneumoniae and fungi, good sterilization and fungistatic effect are arranged, and sterilizing rate can reach more than 90%;
6. surface property: smooth finish is good, and outside surface and internal surface are smooth, no projection and depressed phenomenon;
7. mechanical property; Meet or exceed relevant national standard, and reach external respective standard;
8. resistance to deterioration: water service pipe nondiscoloration under the life-time service condition, mechanical property does not descend.
Below in conjunction with embodiment, the present invention is done one explains:
Technology for making water supply pipe with nm-class antibacterial plastics of the present invention may further comprise the steps successively:
A, nano material, phthalate are carried out pre-mixing in proportion, obtain premix, add phthalate ester coupling agent, be because the affinity of nano material and resin matrix is relatively poor, can not between nano material and resin matrix, form effective the combination, cause a plurality of premium propertiess of nano material can not obtain embodiment, after adding phthalate, can make the whole substrate material have the characteristic of nano material;
B, to be mixed in proportion with antiseptic-germicide and resin by the resulting premix of above-mentioned steps a, (in the present invention, employed antiseptic-germicide generally is with antimicrobial powder or antibacterial plastic concentrate and mixed with resin to obtain compound again again, by various polymer shaping methods, make various goods);
C will place forcing machine to extrude by the resulting compound of above-mentioned steps b and make material, obtain the nano composite antibacterial masterbatch;
D is dried the resulting nano composite antibacterial masterbatch of above-mentioned steps c, dewater;
E, the nano composite antibacterial masterbatch that will dry at last after (moisture is driven away in master batch oven dry, is the requirement of road, back expressing technique to raw material), the dehydration mixes in proportion with resin again, places forcing machine to carry out extrusion molding after the mixing again.
Among the described step a, nano material is selected titanium dioxide for use, and the ratio of mixture of nano material and phthalate is 50: 1 to 100: 1;
Among the described step b, the ratio of said premix, antiseptic-germicide and resin was respectively 10: 20: 100;
Among the described step e, the ratio of said masterbatch and resin is 1: 20.
Said antiseptic-germicide and resin are selected zinc oxide and polypropylene respectively for use;
When making premix, add a spot of dispersant liq paraffin again, add dispersant liq paraffin, its reason is that resin particle mixes with nanometer powder and anti-bacterial powder, and particle is bad with mixing of powder, can make product surface easily produce aberration and piebald, quality problems such as goods each several part composition is variant, the annex solution paraffin body can significantly improve the mixed effect of material, improves the performance of goods;
Among described step a and the step b, pre-mixing temperature and pre-mixing temperature are about 20 degree Celsius;
In the described steps d, the temperature that the nano composite antibacterial masterbatch is dried is about 80 degree Celsius,
Embodiment 1,
With nano material and phthalate according to 100/1 ratio and the pre-mixing of paucidisperse agent whiteruss, in high-speed mixer, mix then, mixing temperature is 20 ℃, logical water coolant is taken away and is mixed the heat that produces, mixing time is about 15 minutes.
2. will be by the compound of 1 gained and antiseptic-germicide and block copolymerization polypropylene according to 10/20/100 ratio pre-mixing, mix in low speed mixer the back, mixing temperature is 20 ℃, mixing time is about 10 minutes, with compound by twin screw extruder according to the certain processing technique extruding pelletization, obtain the nano composite antibacterial master batch.
3. will as far back as about 80 ℃, dry 60 minutes by 2 master batches that obtain, drive away moisture, in low speed mixer, mix according to 1/20 ratio with polypropylene then, mixing temperature is 20 ℃, mixing time is about 10 minutes, with compound by forcing machine and specific device of plastic processing according to the certain processing technique extrusion moulding, obtain the plastic water supply pipe and the pipe connecting piece of all size.
Embodiment 2,
1. with nano-TiO
2With phthalate according to 50/1 ratio and the pre-mixing of paucidisperse agent whiteruss, in high-speed mixer, mix then, mixing temperature is a room temperature, logical water coolant is taken away and is mixed the heat that produces, mixing time is 15 minutes.
2. will be by the compound of 1 gained and antiseptic-germicide ZnO and polypropylene according to 10/20/100 ratio pre-mixing, mix in low speed mixer the back, mixing temperature is a room temperature, mixing time is 10 minutes, with compound by twin screw extruder according to the certain processing technique extruding pelletization, obtain particle diameter homogeneous diameter 2-3mm, the nano composite antibacterial master batch of long 3-5mm.
3. will in low speed mixer, mix according to 1/20 ratio with block copolymerization polypropylene by the 2 nano composite antibacterial master batches that obtain, mixing temperature is a room temperature, mixing time is 10 minutes, with compound by specific device of plastic processing according to the certain processing technique extrusion moulding, obtain the water service pipe and the pipe connecting piece of all size.
Plastic water supply pipe with aforesaid method manufacturing of the present invention is the PPR water service pipe, and anti-microbial property is good, reaches national antibacterial test standard, and passes through state health standards; The water service pipe good mechanical properties surpasses German DIN8078 standard, and by the interpolation of nano material, water service pipe ageing resistance and rigidity, toughness significantly improve, and can use homemade PPR raw material substitution imported raw material, saves cost.
Simultaneously, adopt the method for GB15979-1995 and Ministry of Health's " disinfection technology standard " third edition (in November, 1999) first fascicle experimental technique standard to carry out the test of germ resistance to above-mentioned plastics, to the sterilizing rate of intestinal bacteria, streptococcus aureus up to 99%, illustrate that its purpose reaches by after the technical scheme of the present invention.
Claims (4)
1, a kind of technology for making water supply pipe with nm-class antibacterial plastics is characterized in that, this method may further comprise the steps successively:
A carries out pre-mixing in proportion with nano material, phthalate, obtains premix;
B will be mixed with antiseptic-germicide and resin in proportion by the resulting premix of above-mentioned steps a more again, obtain compound;
C will place forcing machine to extrude by the resulting compound of above-mentioned steps b and make material, obtain the nano composite antibacterial masterbatch;
D is dried the resulting nano composite antibacterial masterbatch of above-mentioned steps c, dewater;
E, the nano composite antibacterial masterbatch after will drying at last, dewatering mixes in proportion with resin again, places forcing machine to carry out extrusion molding after the mixing again.
2, technology for making water supply pipe with nm-class antibacterial plastics as claimed in claim 1 is characterized in that:
Among the described step a, nano material is selected titanium dioxide for use, and the ratio of mixture of nano material and phthalate is 50: 1 to 100: 1;
Among the described step b, the ratio of said premix, antiseptic-germicide and resin was respectively 10: 20: 100;
Among the described step e, the ratio of said masterbatch and resin is 1: 20.
3, technology for making water supply pipe with nm-class antibacterial plastics as claimed in claim 1 or 2 is characterized in that:
Said antiseptic-germicide and resin are selected zinc oxide and polypropylene respectively for use;
When making premix, add a spot of dispersant liq paraffin again.
4, technology for making water supply pipe with nm-class antibacterial plastics as claimed in claim 1 is characterized in that:
Among described step a and the step b, pre-mixing temperature and pre-mixing temperature are about 20 degree Celsius;
In the described steps d, the temperature that the nano composite antibacterial masterbatch is dried is about 80 degree Celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01105328 CN1125715C (en) | 2001-02-13 | 2001-02-13 | Technology for making water supply pipe with nm-class antibacterial plastics |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01105328 CN1125715C (en) | 2001-02-13 | 2001-02-13 | Technology for making water supply pipe with nm-class antibacterial plastics |
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| CN1316328A true CN1316328A (en) | 2001-10-10 |
| CN1125715C CN1125715C (en) | 2003-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01105328 Expired - Fee Related CN1125715C (en) | 2001-02-13 | 2001-02-13 | Technology for making water supply pipe with nm-class antibacterial plastics |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336943A (en) * | 2010-07-27 | 2012-02-01 | 江苏广接通管业制造有限公司 | Polyethylene water supply pipe material |
| CN103654422A (en) * | 2013-12-13 | 2014-03-26 | 深圳安吉尔饮水产业集团有限公司 | Anti-microbial polypropylene part of water drinking device and manufacturing method of anti-microbial polypropylene part of water drinking device |
-
2001
- 2001-02-13 CN CN 01105328 patent/CN1125715C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336943A (en) * | 2010-07-27 | 2012-02-01 | 江苏广接通管业制造有限公司 | Polyethylene water supply pipe material |
| CN103654422A (en) * | 2013-12-13 | 2014-03-26 | 深圳安吉尔饮水产业集团有限公司 | Anti-microbial polypropylene part of water drinking device and manufacturing method of anti-microbial polypropylene part of water drinking device |
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| Publication number | Publication date |
|---|---|
| CN1125715C (en) | 2003-10-29 |
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Granted publication date: 20031029 Termination date: 20100213 |