Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high temperature resistant vacuum bag film and preparation method thereof

A vacuum bag, high temperature resistant technology, used in flat products, other household appliances, applications, etc., can solve the problems of low occupancy rate and slow localization process

Active Publication Date: 2017-07-18
厦门新旺新材料科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the successful research and development of high-temperature resins, the requirements for vacuum consumables have also increased. The traditional nylon composite film (mainly composed of PA+PE) cannot meet the molding temperature requirements above 120°C. It is necessary to use a vacuum bag film containing a certain amount of PA66 to withstand high temperature environment
The high-temperature vacuum bags in the existing market basically rely on imports, the localization process is slow and the market share is low, and there is a huge market prospect and space

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of high temperature resistant vacuum bag film and preparation method thereof
  • A kind of high temperature resistant vacuum bag film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the preparation of high temperature resistant vacuum bag film

[0039] Preparation of comprehensive additives: Mix and granulate heat stabilizer and slip agent in a ratio of 2:1 by weight to obtain the required comprehensive additives;

[0040] The mixture (main material) and comprehensive additives mixed with PA6 and PA66 in a ratio of 2:1 by weight are mixed and stirred, and added to the barrel of the extruder; the finished film is extruded according to the general method, and the finished product is rolled and packaged. The weight ratio of main material: comprehensive additive is 99:1.

[0041] The resulting film is cut and rolled, and packaged.

[0042] According to the temperature resistance test standard ASTM-D648, the finished product was baked at 170°C for 2 hours, and no abnormalities such as curling, melting, and cracking occurred. According to ASTM-D882, the measured tensile strength was 75MPa and the fracture rate was 300%.

Embodiment 2

[0043] Embodiment 2: the preparation of high temperature resistant vacuum bag film

[0044] Preparation of comprehensive additives: Mix and granulate heat stabilizer and slip agent in a ratio of 1:2 by weight to obtain the required comprehensive additives;

[0045]Mix PA6 and PA66 in a ratio of 5:1 by weight (the main material) and comprehensive additives, and add them to the barrel of the extruder; extrude the finished film according to the general method, and wind and pack it to become the finished product; the main material : The weight ratio of comprehensive additives is 95:5.

[0046] The resulting film is cut and rolled, and packaged.

[0047] The testing standard is the same as above, the finished product was baked at 180°C for 2 hours, no abnormalities such as curling, melting, and cracking occurred, the tensile strength was 80 MPa, and the fracture rate was 350%.

Embodiment 3

[0048] Embodiment 3: the preparation of high temperature resistant vacuum bag film

[0049] Preparation of comprehensive additives: Mix and granulate heat stabilizers and slip agents in a ratio of 3:1 by weight to obtain the required comprehensive additives;

[0050] The mixture of PA6 and PA66 in the ratio of 1:1 by weight (main material) and comprehensive additives are mixed and stirred, and added to the barrel of the extruder; the finished film is extruded according to the general method, and the finished product is rolled and packaged. The weight ratio of main material: comprehensive additive is 97:3.

[0051] The resulting film is cut and rolled, and packaged.

[0052] The testing standard is the same as above. The finished product was baked at 185°C for 2 hours. No abnormalities such as curling, melting, and cracking occurred. The tensile strength was 80 MPa and the fracture rate was 340%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
areaaaaaaaaaaa
tensile strengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-temperature-resistant vacuum bag film and a preparing method thereof. A mixture of PA6 and PA66 or PA66 serves as a base body main material, heat stabilizer and a slipping agent are added to serve as auxiliaries for manufacturing the corresponding film. The weight proportion of PA6 to PA66 in the mixture of PA6 and PA66 ranges from 5 to 1 to 1 to 3. The weight proportion of the heat stabilizer to the slipping agent ranges from 1 to 2 to 3 to 1. 95-99% of the main material is added, and 1-5 wt% of the auxiliaries are added. The obtained vacuum bag film is baked for 2 hours in the environment with the temperature from 170 DEG C to 230 DEG C, no abnormalities such as curling, fusing and cracking occur, the tensile strength ranges from 75 MPa to 85 MPa, the breakage rate is larger than 300 percent, the vacuum bag film can bear the use temperature of 230 DEG C to the maximum extent and meet the requirements of most resin system forming, and the use temperature is far higher than the limitation temperature of 120 DEG C of existing composite films.

Description

technical field [0001] The invention relates to the field of films, in particular to a high-temperature-resistant vacuum bag film and a preparation method thereof. Background technique [0002] Composite material is a new technology in recent years, which is famous for its high strength, high modulus and low weight. Composite materials have a variety of molding processes, such as hand lay-up, vacuum, winding, molding, pultrusion, etc. Vacuum technology is famous for its stable product quality, and its market share has increased year by year. [0003] Vacuum bag film, as an important consumable in the vacuum process, is a main material that determines the quality of the product. With the successful research and development of high-temperature resins, the requirements for vacuum consumables have also increased. The traditional nylon composite film (mainly composed of PA+PE) cannot meet the molding temperature requirements above 120°C. It is necessary to use a vacuum bag film...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L83/04C08K13/02B29D7/01
CPCB29D7/01B29K2995/0016C08J5/18C08J2377/02C08J2377/06C08J2477/02C08J2477/06C08L77/02C08L77/06C08L2201/08C08L2203/16C08L2205/02C08L2205/03C08L83/04C08K13/02
Inventor 刘烈新吴振宇
Owner 厦门新旺新材料科技有限公司