CN2632451Y

CN2632451Y - Reinforced random copolymer polypropylene pipe materials

Info

Publication number: CN2632451Y
Application number: CN 03267082
Authority: CN
Inventors: 徐凌秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-10
Filing date: 2003-07-10
Publication date: 2004-08-11
Anticipated expiration: 2013-07-10

Abstract

An reinforced random copolymerized polypropylene tube is characterized in that the device consists of an outer layer (1), an inner layer (2), a core layer (3) and an enhance fiber (4); the outer layer (1) covers outside the core layer (3) which cover the inner layer (2); materials between the outer layer (1) and the inner layer (2) are random copolymerized polypropylene (PP-R); the core layer (3) is made from the reinforced fiber (4) distributed in the random copolymerized polypropylene (PP-R); the inner layer (2) can be filled with antibacterial agents. The utility model is powerful in heat resistance and bending resistance capability, low in expansion rate, low in thermal contraction and strong in bacteria proof, which satisfies the requirements about transferring heat media, thereby suitable for transferring fluid-type heat media, such as hot water.

Description

A kind of random copolymerization polypropylene pipe of enhancing

Technical field

The utility model relates to the random copolymerization polypropylene pipe of a kind of plastic tube, particularly a kind of enhancing.

Background technique

Atactic copolymerized polypropene (being called for short PP-R) tubing comes from Europe, with its higher combination property, take off grain husk in the woods of novel plastic tube, surpass polybutylene (PB) tubing that occurs earlier, crosslinked polyethylene (XLPE) tubing, al-plastics composite pipe, be widely used in the water supply field, obtain good effect.Atactic copolymerized polypropene (be called for short PP-R) tubing is compared with metallic conduit, and it is in light weight, non-corrosive, ask in non-scaling year.But use proof, though excellent atactic copolymerized polypropene (PP-R) the tubing application in many aspects of performance also is subjected to certain restriction, also be not enough to replace heavy metallic conduit, main cause is a rigidity deficiency when carrying thermal medium, heat distortion temperature too low (92.4 ℃), rates of thermal expansion too high (4%/130 ℃ of X 2h), resistance to flexure low (31Mpa).So when carrying thermal medium, bending deflection phenomenons such as dangling can appear in tubing, arch.From the health angle, existing atactic copolymerized polypropene (being called for short PP-R) tubing can't solve the topic that germ multiplies.

Content of the present utility model

The purpose of this utility model provides a kind of atactic copolymerized polypropene (being called for short RPP-R) tubing of enhancing, to solve the above problems, compare with existing atactic copolymerized polypropene (PP-R) tubing, that the utility model tubing has is heat-resisting, anti-bending strength is strong, the advantage of low rates of thermal expansion and low percent thermal shrinkage.Can reach the requirement of carrying the higher temperature thermal medium.And can have long-term antibiotic property.

The utility model is realized by following technological scheme.The utility model is a kind of atactic copolymerized polypropene (RPP-R) tubing of enhancing, it is characterized in that: it comprises skin, internal layer, sandwich layer and reinforcing fiber, described skin clads the outside in described sandwich layer, described sandwich layer clads the outside in described internal layer, the material of described skin and internal layer is atactic copolymerized polypropene (PP-R), the material of described sandwich layer is the atactic copolymerized polypropene of reinforcing fiber modification, promptly is mixed with the atactic copolymerized polypropene (RPP-R) of the enhancing of reinforcing fiber formation in atactic copolymerized polypropene (PP-R).In order to make tubing have long-term antibiotic property, can in inner layer material, mix antibacterial additives, form antibacterial atactic polypropylene (AVPP-R).

Described reinforcing fiber is that alkali-free does not have cured glass fibre.

Described reinforcing fiber also can be carbon fiber.

Described antibacterial additives is a silver zeolite.

The utility model adopts three layers composite pipe, its material outer and internal layer is existing atactic copolymerized polypropene (PP-R), to keep its original wholesomeness, degree of finish and welding performance constant, the structure of sandwich layer is in atactic copolymerized polypropene (PP-R), be distributed with reinforcing fiber, form the atactic copolymerized polypropene (RPP-R) that strengthens, to improve the performance of this tubing, make its anti-bending strength enhancing, not crooked, indeformable under the temperature that improves, have low rates of thermal expansion and low percent thermal shrinkage; Can satisfy the requirement of carrying thermal medium.Because the effect of the antibacterial additives of internal layer makes tubing increase antibacterial functions.

In sum, the utlity model has heat-resisting, anti-bending strength is strong, low-thermal-expansion rate and low heat shrinkage and antibiotic advantage.Can reach the requirement of carrying thermal medium, for example delivering hot water.

Description of drawings

Fig. 1 is a structural representation of the present utility model,

Fig. 2 is the A place enlarged view among Fig. 1.

Code name explanation among the figure

1 outer 2 internal layers, 3 sandwich layers

4 reinforcing fibers

Embodiment's present embodiment is an example for atactic copolymerized polypropene (RPP-R) the pipe material of the enhancing that the delivering hot water uses, and the utility model is done specifying.

The structural representation of atactic copolymerized polypropene (RPP-R) pipe that strengthens for the utility model as shown in Figure 1, 2, it comprises skin 1, internal layer 2, sandwich layer 3 and reinforcing fiber 4, described outer 1 clads in the outside of sandwich layer 3, sandwich layer 3 clads in the outside of internal layer 2, skin 1, internal layer 2 are all used atactic copolymerized polypropene (PP-R) material, the material of sandwich layer 3 is to be distributed with reinforcing fiber 4 in atactic copolymerized polypropene (PP-R) material, forms atactic copolymerized polypropene (RPP-R) material of reinforcing fiber modification.The glass fibre that the reinforcing fiber 4 that adopts in the present embodiment is cured for alkali-free does not have.Reinforcing fiber 4 also can be carbon fiber.In order to make tubing have long-term antibiotic property, also in internal layer 2, mix silver zeolite, form antibacterial atactic polypropylene (AVPP-R) internal layer.

In the present embodiment, the material of sandwich layer 3 does not have cured glass fibre as reinforcing fiber for the alkali-free that has added percent 10-15 in atactic copolymerized polypropene (PP-R), form the atactic copolymerized polypropene (RPP-R) that strengthens, so that present embodiment tubing improves performance, become the tubing that has superior heat resistance and low caloric deformation rate and improved resistance to flexure.After tested, the heat distortion temperature of the pipe material product of present embodiment is up to 116.4～124.9 ℃, and rates of thermal expansion only is 0.8～1.2%/130 ℃ of X 2h, and shrinkage is 0.2%～0.4%, and resistance to flexure is 31～37Mpa, has reached the requirement of delivering hot water's pipeline.In internal layer 2, dope the silver zeolite antimicrobial agent of 1%-2%, after tested, the kill ratios of harmful germs such as Escherichia coli, staphylococcus is reached respectively more than 95% and 99%.Disperse and function such as antistatic for the bonding that improves sandwich layer 3, also can in sandwich layer 3, add infiltration Bond on a small quantity.

Tubing used in the present embodiment adopts the expressing technique manufacturing, adopts the ZL00235969.3 of patent formerly single screw rod plastic pipe extruder of claimant, and the extruder head of employing is three-layer co-extruded spiral head (all not shown).

Claims

1, a kind of random copolymerization polypropylene pipe of enhancing is characterized in that:

It comprises skin (1), internal layer (2), sandwich layer (3) and reinforcing fiber (4), described skin (1) clads in the outside of described sandwich layer (3), described sandwich layer (3) clads in the outside of described internal layer (2), the material of described skin (1) and internal layer (2) is atactic copolymerized polypropene (PP-R), and the material of described sandwich layer (3) is for being distributed with described reinforcing fiber (4) in atactic copolymerized polypropene (PP-R).

2, the random copolymerization polypropylene pipe of a kind of enhancing of preparation according to claim 1 is characterized in that:

The glass fibre that described reinforcing fiber (4) is cured for alkali-free does not have.

3, the random copolymerization polypropylene pipe of a kind of enhancing of preparation according to claim 1 is characterized in that:

Described reinforcing fiber (4) is a carbon fiber.

4, the random copolymerization polypropylene pipe of a kind of enhancing of preparation according to claim 1 is characterized in that:

In described internal layer (2), be mixed with the silver zeolite of the 1%-2% that accounts for described internal layer (2) weight.