CN113248894A - Preparation method of 180 ℃ boiling water resistant PC modified material - Google Patents

Preparation method of 180 ℃ boiling water resistant PC modified material Download PDF

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Publication number
CN113248894A
CN113248894A CN202110441699.5A CN202110441699A CN113248894A CN 113248894 A CN113248894 A CN 113248894A CN 202110441699 A CN202110441699 A CN 202110441699A CN 113248894 A CN113248894 A CN 113248894A
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CN
China
Prior art keywords
boiling water
modified material
preparation
added
compatilizer
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.)
Withdrawn
Application number
CN202110441699.5A
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Chinese (zh)
Inventor
沈文祥
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.)
NANJING TANGCHENG PLASTIC CO Ltd
Original Assignee
NANJING TANGCHENG PLASTIC 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 NANJING TANGCHENG PLASTIC CO Ltd filed Critical NANJING TANGCHENG PLASTIC CO Ltd
Priority to CN202110441699.5A priority Critical patent/CN113248894A/en
Publication of CN113248894A publication Critical patent/CN113248894A/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

Abstract

The invention belongs to the field of polymer modified materials, and provides a preparation method of a PC modified material capable of resisting boiling water at 180 ℃, which is characterized in that a compatilizer is added to carry out blending modification on PC and PE. The compatibilizer is maleic anhydride grafted LLDPE. The PC modified material prepared by the method has better performance of resisting boiling water at 180 ℃ than unmodified PC, and can completely meet the use requirement of products under the condition of boiling water at 180 ℃.

Description

Preparation method of 180 ℃ boiling water resistant PC modified material
Technical Field
The invention belongs to the field of polymer modified materials, and provides a preparation method of a PC modified material capable of resisting boiling water at 180 ℃.
Background
Polycarbonate (PC for short) is colorless and transparent, has excellent comprehensive performance, and can be widely used in the fields of automobiles, medical treatment, aerospace packaging, electronic and electric appliances and the like.
Although PC has good overall properties, it has some defects such as susceptibility to stress cracking, notch sensitivity, poor abrasion resistance, and poor processing fluidity, and products made of pure PC (e.g., release films) do not resist boiling water at 180 ℃ and are easily deformed in boiling water, so that improvement is necessary.
By blending the modified PC, a plurality of properties can be improved, and the application field of the modified PC is expanded.
The PC and polyethylene (hereinafter referred to as PE) blending modification effect is obvious, especially the boiling water resistance is obviously improved, the tensile strength and the flexural strength are almost unchanged, the aging resistance is good, the melt viscosity is reduced, and the processing and the forming are facilitated. However, PC and PE have poor compatibility, and direct blending is likely to cause a layered and incompatible state.
Disclosure of Invention
The invention provides a preparation method of a PC modified material capable of resisting boiling water at 180 ℃ aiming at the problems in the prior art, which can meet the basic technical requirements of a release film used in a boiling water state at 180 ℃.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation method of a 180 ℃ boiling water resistant PC modified material comprises the following steps: the method is characterized in that the blending modification is carried out on PC and PE by adding a compatilizer.
In general, the preparation process of the present invention: 70-80% of PC, 15-25% of PE, 5-10% of compatilizer and dispersing auxiliary agent are added simultaneously, the mixture is fully and uniformly mixed through a high-speed mixer, and the PC modified material resistant to boiling water at 180 ℃ is prepared through extrusion and granulation through a double-screw extruder.
The PE is low-density polyethylene LDPE.
The compatibilizer is maleic anhydride grafted LLDPE.
0.01-0.08% of dispersing aid is added.
Preferably, the dispersing aid is rosin glycerol ester.
The PC modified material prepared by the method has better performance of resisting boiling water at 180 ℃ than unmodified PC, and can completely meet the use requirement of products under the condition of boiling water at 180 ℃.
Detailed Description
The process of the present invention is described in detail below with reference to examples.
Example 1
PC 80%
PE (Low Density polyethylene LDPE) 15%
Maleic anhydride grafted LLDPE 5%
0.02 percent of rosin glyceride.
Example 2
PC 75%
PE (Low Density polyethylene LDPE) 20%
Maleic anhydride grafted LLDPE 5%
0.02 percent of rosin glyceride.
Example 3
PC 70%
PE (Low Density polyethylene LDPE) 25%
Maleic anhydride grafted LLDPE 5%
0.02 percent of rosin glyceride.
According to the formula of the embodiment, the PC modified material capable of resisting boiling water at 180 ℃ is prepared by fully and uniformly mixing the components through a high-speed mixer and extruding and granulating the mixture through a double-screw extruder.
The processing temperature of each section of the double-screw extruder is 180-280 ℃.
The example product was formed by casting into a film, the relevant properties of which after boiling water at 180 ℃ were compared to those of a pure PC film, as shown in the table below.
Item Pure PC film Example 1 films Example 2 membranes Example 3 films
Elongation% 92 81 84 90
Tensile strength MPa 67 79 72 59
Impact strength KJ/m2 5.1 19 23 30
。
The data show that the PC modified material prepared by the invention has better performance of resisting boiling water at 180 ℃ than unmodified PC, and can completely meet the use requirement of products under the condition of boiling water at 180 ℃.

Claims (6)

1. A preparation method of a PC modified material resisting boiling water of 180 ℃ is characterized in that a compatilizer is added to carry out blending modification on PC and PE.
2. The method of claim 1, wherein: 70-80% of PC, 15-25% of PE, 5-10% of compatilizer and dispersing auxiliary agent are added simultaneously, the mixture is fully and uniformly mixed through a high-speed mixer, and the PC modified material resistant to boiling water at 180 ℃ is prepared through extrusion and granulation through a double-screw extruder.
3. The process according to claim 1, wherein the PE is low density polyethylene LDPE.
4. The process according to claim 1 or 2, wherein the compatibilizer is maleic anhydride-grafted LLDPE.
5. The production method according to claim 1 or 2, characterized in that 0.01 to 0.08% by mass of a dispersing aid is added.
6. The process according to claim 2 or 5, wherein the dispersing aid is glycerol ester of rosin.
CN202110441699.5A 2021-04-23 2021-04-23 Preparation method of 180 ℃ boiling water resistant PC modified material Withdrawn CN113248894A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110441699.5A CN113248894A (en) 2021-04-23 2021-04-23 Preparation method of 180 ℃ boiling water resistant PC modified material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110441699.5A CN113248894A (en) 2021-04-23 2021-04-23 Preparation method of 180 ℃ boiling water resistant PC modified material

Publications (1)

Publication Number Publication Date
CN113248894A true CN113248894A (en) 2021-08-13

Family

ID=77221353

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110441699.5A Withdrawn CN113248894A (en) 2021-04-23 2021-04-23 Preparation method of 180 ℃ boiling water resistant PC modified material

Country Status (1)

Country Link
CN (1) CN113248894A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1388178A (en) * 2002-06-03 2003-01-01 上海交通大学 Prepn of low-temperature resistant intermingled polycarbonate material
CN1415661A (en) * 2002-10-18 2003-05-07 上海氯碱化工股份有限公司 Cross blend material based on polycarbonate and its prepn. method
CN102040817A (en) * 2010-12-08 2011-05-04 惠州市沃特新材料有限公司 Polycarbonate (PC)/poly ethylene (PE) plastic alloy as well as preparation method and application thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1388178A (en) * 2002-06-03 2003-01-01 上海交通大学 Prepn of low-temperature resistant intermingled polycarbonate material
CN1415661A (en) * 2002-10-18 2003-05-07 上海氯碱化工股份有限公司 Cross blend material based on polycarbonate and its prepn. method
CN102040817A (en) * 2010-12-08 2011-05-04 惠州市沃特新材料有限公司 Polycarbonate (PC)/poly ethylene (PE) plastic alloy as well as preparation method and application thereof

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Application publication date: 20210813