CN102504114A - Method for blending graft modification of PE (polyethylene)/PP (polypropylene) - Google Patents

Method for blending graft modification of PE (polyethylene)/PP (polypropylene) Download PDF

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Publication number
CN102504114A
CN102504114A CN2011104256225A CN201110425622A CN102504114A CN 102504114 A CN102504114 A CN 102504114A CN 2011104256225 A CN2011104256225 A CN 2011104256225A CN 201110425622 A CN201110425622 A CN 201110425622A CN 102504114 A CN102504114 A CN 102504114A
Authority
CN
China
Prior art keywords
mass parts
weight
graft modification
composite structure
blending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011104256225A
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Chinese (zh)
Inventor
冯新良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sanrong Plastic & Rubber Co Ltd
Original Assignee
Zhejiang Sanrong Plastic & Rubber Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sanrong Plastic & Rubber Co Ltd filed Critical Zhejiang Sanrong Plastic & Rubber Co Ltd
Priority to CN2011104256225A priority Critical patent/CN102504114A/en
Publication of CN102504114A publication Critical patent/CN102504114A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The invention relates to a method for blending graft modification of PE (polyethylene)/PP (polypropylene). The formula comprises 100 parts by weight of PE or PP, 4.0-7.0 parts by weight of maleic anhydride, 0.1-1.0 part by weight of complex peroxide initiator and 0.2-0.7 part by weight of mixed polymerization inhibitor. According to the formula, a blending technology is adopted, extrusion pelletization is performed in a single-screw extruder, a twin-screw extruder or a Brabender plasticizing instrument, the temperature is controlled at 160-175 DEG C, and the rotational speed of a screw/screws is controlled at 30-45r/min (revolutions per minute). The method disclosed by the invention has the beneficial effects that the PE/PP after graft modification can be directly compounded with a non-polar barrier material, such as EVAL (ethylene vinyl alcohol) or EVOH (ethylene vinyl alcohol copolymer), and an expensive imported compatibilizer is not required any more; a five-layer composite structure of a flexible pipe can also be changed into a three-layer composite structure, the number of extrusion heads is reduced and the process control is simplified; and the production cost is reduced and the product quality is improved.

Description

The method of a kind of blend graft modified PE/PP
Technical field
The invention belongs to the plastics-production technical field, be specifically related to the method for blend graft modified PE/PP.
Background technology
PE and PP are general-purpose plastics, are fit to thermoplastic molding's technology, are that flexible pipe is made the topmost starting material in field.Flexible pipe is commonly used to splendid attire food, medicine, makeup etc., and rotten in order to prevent content, the flexible pipe material is necessary for high barrier material.High barrier material commonly used is an ethylene-vinyl alcohol copolymer, and (PE or PP) is incompatible with nonpolar polyolefine, and method in common is an ABCBA five-layer co-squeezing composite structure in the industry; Wherein A is a polyolefine; B is a compatilizer, and C is a high barrier material, like EVAL or EVOH.This constructed products not only requires the production unit of five extruder heads, also will use expensive import compatilizer, and production cost is usually high, and technology controlling and process is complicated.Adopt the blending technology modified polyolefin, the use of substituting import one compatilizer, changing five layers of composite structure is three-layer composite structure, not only can reduce the equipment and technology controlling unit of making high barrier material, and can enhance productivity greatly and product quality.
Summary of the invention
The present invention is primarily aimed at the existing problem that the high barrier flexible pipe exists of producing; Adopt blending technology, come graft modification PE/PP, make its can be directly and nonpolar barrier material such as EVAL or EVOH compound; No longer need expensive import compatilizer; Also can reduce the flexible pipe number of plies,, improve the quality of products to reduce production costs.
The objective of the invention is to realize like this, the method for a kind of blend graft modified PE/PP, prescription: PE or PP100 mass parts, maleic anhydride 4.0 ~ 7.0 mass parts, composite peroxide initiator 0.1 ~ 1.0 mass parts is mixed stopper 0.2 ~ 0.7 mass parts.Above-mentioned prescription adopts blending technology, extruding pelletization in single screw extrusion machine, twin screw extruder or Brabender plasticizing appearance, 160 ~ 175 ℃ of controlled temperature, screw speed 30 ~ 45r/min.
Said composite peroxide initiator is that Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:1 ~ 3.
Said mixing stopper is that N and N,N-DIMETHYLACETAMIDE mix with 1 ~ 3:1 mass ratio.
The complicated mechanism of blend graft; Often follow serious side reaction; Show as the crosslinked of polycthylene grafted reaction, polyacrylic degraded adds the electronic donor compound capable that contains N, P, S atom; Can suppress side reactions such as these are crosslinked, degraded like N, N,N-DIMETHYLACETAMIDE, also can improve the melting index of graftomer.Percentage of grafting of the present invention is greater than 3.0%, and melting index is greater than 7.0g/10min.
The invention has the beneficial effects as follows: the PE/PP after the blend graft modification is can be directly compound with nonpolar barrier material such as EVAL or EVOH, no longer needs expensive import compatilizer; Five layers of composite structure that also can change flexible pipe are three-layer composite structure, reduce extruder head quantity, simplify technology controlling and process; Reduce production costs, improve the quality of products.
Embodiment
Embodiment one:
PE 100 mass parts, maleic anhydride 4.0 mass parts; Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:1, and consumption is 0.1 mass parts; N and N,N-DIMETHYLACETAMIDE mix with the 1:1 mass ratio, consumption 0.2 mass parts.Above-mentioned prescription extruding pelletization in single screw extrusion machine, 160 ℃ of temperature of reaction, screw speed 40r/min.The resulting polymers percentage of grafting is 3.2%, and melting index is 7.5g/10min.
Embodiment two:
PE 100 mass parts, maleic anhydride 4.5 mass parts; Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:2, and consumption is 0.3 mass parts; N and N,N-DIMETHYLACETAMIDE mix with the 2:1 mass ratio, consumption 0.3 mass parts.Above-mentioned prescription extruding pelletization in twin screw extruder, 165 ℃ of temperature of reaction, screw speed 42r/min.The resulting polymers percentage of grafting is 3.3%, and melting index is 7.3g/10min.
Embodiment three:
PE 100 mass parts, maleic anhydride 5.0 mass parts; Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:3, and consumption is 0.5 mass parts; N and N,N-DIMETHYLACETAMIDE mix with the 3:1 mass ratio, consumption 0.4 mass parts.Above-mentioned prescription is extruding pelletization in Brabender plasticizing appearance, 170 ℃ of temperature of reaction, screw speed 45r/min.The resulting polymers percentage of grafting is 3.5%, and melting index is 7.2g/10min.
Embodiment four:
PP 100 mass parts, maleic anhydride 5.0 mass parts; Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:1, and consumption is 0.2 mass parts; N and N,N-DIMETHYLACETAMIDE mix with the 1:1 mass ratio, consumption 0.4 mass parts.Above-mentioned prescription extruding pelletization in single screw extrusion machine, 170 ℃ of temperature of reaction, screw speed 30r/min.The percentage of grafting of resulting polymers is 3.4%, and melting index is 7.2g/10min.
Embodiment five:
PP 100 mass parts, maleic anhydride 6.0 mass parts; Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:2, and consumption is 0.6 mass parts; N and N,N-DIMETHYLACETAMIDE mix with the 2:1 mass ratio, consumption 0.55 mass parts.Above-mentioned prescription extruding pelletization in twin screw extruder, 172 ℃ of temperature of reaction, screw speed 35r/min.The percentage of grafting of resulting polymers is 3.2%, and melting index is 7.5g/10min.
Embodiment six:
PP 100 mass parts, maleic anhydride 7.0 mass parts; Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:3, and consumption is 1.0 mass parts; N and N,N-DIMETHYLACETAMIDE mix with the 3:1 mass ratio, consumption 0.7 mass parts.Above-mentioned prescription is extruding pelletization in Brabender plasticizing appearance, 175 ℃ of temperature of reaction, screw speed 45r/min.The percentage of grafting of resulting polymers is 3.5%, and melting index is 7.2g/10min.

Claims (3)

1. the method for a blend graft modified PE/PP; It is characterized in that PE or PP100 mass parts, maleic anhydride 4.0 ~ 7.0 mass parts, composite peroxide initiator 0.1 ~ 1.0 mass parts, mix stopper 0.2 ~ 0.7 mass parts; Extruding pelletization in single screw extrusion machine, twin screw extruder or plasticizing appearance; 160 ~ 175 ℃ of controlled temperature, screw speed 30 ~ 45r/min.
2. the method for blend graft modified PE/PP according to claim 1 is characterized in that composite peroxide initiator is that Lucidol mixes with the mass ratio of Di Cumyl Peroxide 99 with 1:1 ~ 3.
3. blend graft modified PE according to claim 1 and 2/PP method is characterized in that said mixing stopper is that N and N,N-DIMETHYLACETAMIDE mix with 1 ~ 3:1 mass ratio.
CN2011104256225A 2011-12-19 2011-12-19 Method for blending graft modification of PE (polyethylene)/PP (polypropylene) Pending CN102504114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011104256225A CN102504114A (en) 2011-12-19 2011-12-19 Method for blending graft modification of PE (polyethylene)/PP (polypropylene)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011104256225A CN102504114A (en) 2011-12-19 2011-12-19 Method for blending graft modification of PE (polyethylene)/PP (polypropylene)

Publications (1)

Publication Number Publication Date
CN102504114A true CN102504114A (en) 2012-06-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103275630A (en) * 2013-04-28 2013-09-04 须建明 Polar membrane material with adsorptivity, unidirectional check valve and air bag
CN103772612A (en) * 2012-10-25 2014-05-07 合肥杰事杰新材料股份有限公司 Preparation method for maleic anhydride-grafted polypropylene
CN109180867A (en) * 2018-08-01 2019-01-11 南京京锦元科技实业有限公司 A kind of maleic anhydride grafting PE for bonding EVOH
CN113136005A (en) * 2021-04-20 2021-07-20 南京棠城塑胶有限公司 Method for grafting maleic anhydride onto low molecular weight polyethylene

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07118488A (en) * 1993-10-20 1995-05-09 Nissan Motor Co Ltd Olefin resin composition for exterior trim part of automobile
CN101423589A (en) * 2008-12-12 2009-05-06 江苏工业学院 Method for preparing polyethylene/maleic anhydride melt grafting high condensing pre-mixed master batch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07118488A (en) * 1993-10-20 1995-05-09 Nissan Motor Co Ltd Olefin resin composition for exterior trim part of automobile
CN101423589A (en) * 2008-12-12 2009-05-06 江苏工业学院 Method for preparing polyethylene/maleic anhydride melt grafting high condensing pre-mixed master batch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103772612A (en) * 2012-10-25 2014-05-07 合肥杰事杰新材料股份有限公司 Preparation method for maleic anhydride-grafted polypropylene
CN103772612B (en) * 2012-10-25 2018-01-23 合肥杰事杰新材料股份有限公司 A kind of preparation method of maleic anhydride inoculated polypropylene
CN103275630A (en) * 2013-04-28 2013-09-04 须建明 Polar membrane material with adsorptivity, unidirectional check valve and air bag
CN109180867A (en) * 2018-08-01 2019-01-11 南京京锦元科技实业有限公司 A kind of maleic anhydride grafting PE for bonding EVOH
CN113136005A (en) * 2021-04-20 2021-07-20 南京棠城塑胶有限公司 Method for grafting maleic anhydride onto low molecular weight polyethylene

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Application publication date: 20120620