CN202118389U

CN202118389U - Double-layer PP-R (polypropylene random) pipe containing bi-crystal

Info

Publication number: CN202118389U
Application number: CN2011200867051U
Authority: CN
Inventors: 陈厚忠
Original assignee: Wuhan Kingbull Economic Development Co Ltd
Current assignee: Wuhan Kingbull Economic Development Co Ltd
Priority date: 2011-03-29
Filing date: 2011-03-29
Publication date: 2012-01-18
Anticipated expiration: 2021-03-29

Abstract

The utility model discloses a double-layer PP-R (polypropylene random) pipe containing beta-crystal, which comprises a PP-R pipe layer with an external or internal reinforcing layer. The reinforcing layer made of PP-RCT (polypropylene-random copolymer temperature enhanced) is added on the outer layer or inner layer of an existing PP-R pipe and improves low-temperature impact resistance of the pipe. Meanwhile, the PP-R pipe layer and/or the PP-RCT layer is set to be gray or in other lightproof color so that the problem about light transmission of the pipe is solved. The structure is suitable for pipes.

Description

A kind of brilliant double-deck PP-R pipe of β that contains

Technical field

The utility model relates to tubing, particularly relates to the brilliant double-deck PP-R pipe of a kind of β of containing.

Background technique

Before the utility model proposes; Atactic copolymerized polypropene (PP-R) got into China Building Cooling water pipe material field from 1999; Because of good characteristic such as it has that health, environmental protection, resistance to water-flow are little, hot and cold water dual-purpose, hot melt attended operation are convenient, safe and reliable; And price is more moderate, has become the main product of China's Building Cooling water water-feeding pipes.But the low-temperature impact resistance of PP-R tubing is relatively poor, and white and green PP-R tubing have the printing opacity problem.

The model utility content

The purpose of the utility model is in order to overcome the deficiency of above-mentioned background technology, the double-deck PP-R pipe that a kind of low-temperature impact property is good and the lighttight β of containing is brilliant to be provided.

In order to realize above purpose, the double-deck PP-R pipe that a kind of β of containing that the utility model provides is brilliant comprises one deck PP-R pipe, and the skin or the internal layer of said one deck PP-R pipe are provided with reinforced layer, and this reinforced layer is to contain the brilliant PP-RCT layer of β.

In such scheme, the thickness of said reinforced layer is the 10-50% of total thickness, like this, has guaranteed that the low-temperature impact property of tubing and cost are low.

The utility model adds the reinforced layer that one deck is processed by the PP-RCT material through skin or the internal layer at existing PP-R pipe, has improved the low-temperature impact property of tubing; Simultaneously, the color of PP-R layer and/or PP-RCT layer is made as grey or other lighttight colors, thereby solves the printing opacity problem of tubing.

The utility model and existing technology contrast, show that fully its superiority is: low-temperature impact property is good and light tight etc.

Description of drawings

Fig. 1 is the structural representation of

embodiment

1 and 2;

Fig. 2 is the stravismus structural representation of Fig. 1;

Fig. 3 is the structural representation of embodiment 3 and 4;

Fig. 4 is the stravismus structural representation of Fig. 3.

Among the figure: reinforced layer 1PP-R pipe 2.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe in detail, but this embodiment should not be construed as the restriction to the utility model.

Embodiment 1: as shown in Figure 1; A kind of brilliant double-deck PP-R pipe of β that contains; Comprise that one deck is the PP-R pipe 2 of grey or other light tight color; The skin of this PP-R pipe 2 is provided with the reinforced layer 1 into white, green or other printing opacity color, and the wall thickness of this reinforced layer 1 is the 10-50% (referring to Fig. 2) of total wall thickness.

Embodiment 2: as shown in Figure 1; A kind of brilliant double-deck PP-R pipe of β that contains; Comprise that one deck is that white, PP-R green or other printing opacity color manage 2; The skin of this PP-R pipe 2 is provided with the reinforced layer 1 into grey or other light tight color, and the wall thickness of this reinforced layer 1 is the 10-50% (referring to Fig. 2) of total wall thickness.

Embodiment 3: as shown in Figure 3; A kind of brilliant double-deck PP-R pipe of β that contains; Comprise that one deck is the PP-R pipe 2 of grey or other light tight color; The internal layer of this PP-R pipe 2 is provided with the reinforced layer 1 into white, green or other printing opacity color, and the wall thickness of this reinforced layer 1 is the 10-50% (referring to Fig. 4) of total wall thickness.

Embodiment 4: as shown in Figure 3; A kind of brilliant double-deck PP-R pipe of β that contains; Comprise that one deck is that white, PP-R green or other printing opacity color manage 2; The internal layer of this PP-R pipe 2 is provided with the reinforced layer 1 into grey or other light tight color, and the wall thickness of this reinforced layer 1 is the 10-50% (referring to Fig. 4) of total wall thickness.

The making method of the foregoing description is: pass through the once-combined moulding of co-extrusion die head by two pipe extruders; Said reinforced layer 1 adopts special P P-RCT raw material and production technology to extrude processing, and other flow is identical with the flow of PP-R pipe 2.

Size of the foregoing description and performance meet the GB/T18742.2-2002 standard-required; Reinforced layer 1 has better low-temperature impact resistance and high-temperature creep resistance than PP-R layer; Can adopt identical instrument to carry out hot melt with the PP-R pipe fitting and be connected with technology, easy to operate, more safe and reliable.

Claims

1. one kind contains the brilliant double-deck PP-R pipe of β, comprises one deck PP-R pipe, and it is characterized in that: the skin or the internal layer of said one deck PP-R pipe are provided with reinforced layer.

2. a kind of brilliant double-deck PP-R pipe of β that contains as claimed in claim 1, it is characterized in that: the thickness of said reinforced layer is the 10-50% of total thickness.