A kind of multi-component toughening modified pp-r pipe special material and preparation method thereof

A special material for pipes, PP-R technology, which is applied in the field of polymer materials, can solve the problems of not really improving the comprehensive performance of PP-R pipes, limited application scope, prone to brittle fracture, etc. Performance improvements, the effect of improving interface performance

Active Publication Date: 2019-10-01
浙江中财管道科技股份有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a multi-component toughened and modified PP-R pipe special material and its preparation method, which aims to solve the problem of PP-R pipes in the prior art when used under low temperature conditions. , prone to brittle fracture, the scope of application is limited, and the current toughening modification method can not really achieve the technical problem of improving the comprehensive performance of PP-R pipes

Method used

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  • A kind of multi-component toughening modified pp-r pipe special material and preparation method thereof
  • A kind of multi-component toughening modified pp-r pipe special material and preparation method thereof

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[0028] The embodiment of the present invention also provides a method for preparing a multi-component toughened modified PP-R pipe special material, which includes the following steps:

[0029] A), prepare toughening agent I, toughening agent II and inorganic rigid particles:

[0030] a1) Preparation of toughening agent I: select TMB series compounds, CHB-5 compounds, NU-100 compounds and NAB compounds, rare earth β nucleating agents as WGB series compounds, organic acid β nucleating agents as DCHT compounds, One or more of hydrazine diacid and suberic acid are used as β-nucleating agent, fully pre-mixed with PP-R resin in proportion, and then the pre-mixed material is placed in a twin-screw extrusion granulator for Blend molding, cooling, and pelletizing to obtain the toughening agent I, which is set aside.

[0031] Among them, the sufficient premixing of the β-nucleating agent and PP-R resin means that the β-nucleating agent is uniformly dispersed in the PP-R material by us...

Embodiment 1

[0039] A multi-component toughened and modified PP-R pipe special material, the raw material unit is 55-95 parts of PP-R resin, 2-20 parts of toughening agent I, and 1-20 parts of toughening agent II. 5 parts, 2 to 20 parts of inorganic rigid particles, the raw materials are configured within the range.

[0040] The PP-R resin is random copolymerized polypropylene, brand: PA14-D, PetroChina Daqing Oilfield Co., Ltd. (the PP-R resins described below are all resins of this brand), and the content is 78 parts.

[0041] Toughening agent I content is 2 parts, and its composition is PP-R resin and β nucleating agent. Based on 100 parts by weight of the toughening agent I, wherein, the content of PP-R resin is 95 parts, and the beta nucleating agent is an aromatic amide compound (TMB) with a content of 5 parts. Trademark: TMB-5, Shanxi Chemical Industry graduate School.

[0042] The content of toughening agent II is 10 parts, and its composition is PP-R resin, elastomer and compati...

Embodiment 2

[0050] A multi-component toughening modified PP-R pipe special material, the raw material unit is 55-95 parts of PP-R resin, 1-5 parts of toughening agent I, and 2-5 parts of toughening agent II. 20 parts, inorganic rigid particles are 2 to 20 parts, and the raw materials are configured within the range.

[0051] PP-R resin is random copolymerized polypropylene with a content of 83 parts.

[0052] Toughening agent I content is 2 parts, and its composition is PP-R resin and nucleating agent. Based on 100 parts by weight of toughening agent I, wherein, the content of PP-R resin is 95 parts, and the beta nucleating agent is an aromatic amide compound (NAB), with a content of 5 parts. Trademark: NAB-82, Shanxi Chemical Industry graduate School.

[0053] The content of toughening agent II is 5 parts, and its composition is PP-R resin, elastomer and compatibilizer. Based on 100 parts by weight of toughening agent II, wherein, the content of PP-R resin is 80 parts, the elastomer i...

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Abstract

The invention discloses a multi-element toughened and modified special material for a PP-R pipe. The multi-element toughened and modified special material for the PP-R pipe comprises, by weight, 85-95 parts of PP-R resin, 1-5 parts of a toughening agent I, 2-5 parts of a toughening agent II, and 2-5 parts of inorganic rigid particles; the PP-R resin is a III type polypropylene randon coplymer and comprises natural color granules, colored granules and powder materials; main components in the toughening agent I, the toughening agent II and the inorganic rigid particles are all PP-R resin; the toughening agent I further comprises a beta nucleating agent; the toughening agent II further comprises elastomer and compatilizer; and the inorganic rigid particles further comprise inorganic rigid powder materials. The invention further provides a preparation method of the multi-element toughened and modified special material for the PP-R pipe; by preparing the toughening agent I, the toughening agent II and the inorganic rigid particles, then the low temperature toughed special material for the pipe is prepared in a compositing manner, and the method is simple. The special material for the PP-R pipe has a good toughening effect, the hydraulic performance of the pipe is not lowered, the rigidity of the pipe is improved, and good application prospects are achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of polymer materials, in particular to a multi-component toughening modified PP-R pipe special material and a preparation method thereof. 【Background technique】 [0002] Random copolymerized polypropylene (PP-R) is a type III polypropylene developed by random copolymerization of ethylene monomers into the main chain of polypropylene (PP). It has excellent performance and is widely used in various fields of national production. Among them, pipes made of PP-R have excellent comprehensive properties such as low thermal conductivity, high temperature resistance, corrosion resistance, and hot-melt welding, and are suitable for cold and hot water transportation such as residential home improvement, office buildings, and municipal administration. In the domestic hot and cold water pipe demand, polypropylene pipe accounts for more than 50%, and has become one of the most important materials in the domestic pipelin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08L23/08C08L53/00C08K3/26C08K3/36C08J3/22
Inventor 陈建春吴锫程裕鑫卢昱文
Owner 浙江中财管道科技股份有限公司
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