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Boiling-resistant polymer film material and preparation method thereof

A polymer film and cooking-resistant technology, applied in the field of polypropylene composite materials, can solve the problems of general transparency and achieve high thermal stability and purity, high strength, and high bonding strength

Pending Publication Date: 2021-05-25
HUIZHOU HAOMING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The composite material has good strength and heat resistance, but the transparency is average
[0004] At present, a polypropylene composite material with high strength, good heat resistance and high transparency has not been developed to meet the needs of the food industry

Method used

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  • Boiling-resistant polymer film material and preparation method thereof
  • Boiling-resistant polymer film material and preparation method thereof
  • Boiling-resistant polymer film material and preparation method thereof

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preparation example Construction

[0047] Wherein, the novel sorbitol nucleating agent of embodiment 4 is 1,3-2,4-bis(p-methylbenzylidene)-1-allyl sorbitol, and its synthetic method comprises the following steps:

[0048] (1) configuration concentration is the HBr alcohol aqueous solution of 0.5mol / L, wherein the volume percentage of ethanol is 10%; With 3 parts of glucose, 2.02 parts of allyl bromide, 1.98 parts of Sn powder, 50 parts of HBr alcohol aqueous solution of 0.5mo / L Place in a reaction kettle, stir and react at room temperature for 48 hours to obtain a mixed solution; add 5 mol / L NaOH aqueous solution dropwise to the mixed solution to neutralize to pH=7, a large amount of white precipitates are formed during the dropping process, and a suspension is obtained; Suction filtration of the suspension was performed to remove the precipitate to obtain a filtrate; the filtrate was subjected to rotary evaporation to remove the solvent to obtain milky white solid 1-allyl sorbitol;

[0049] (2) Put 3.7 parts o...

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Abstract

The invention relates to the technical field of polypropylene composite materials, and discloses a boiling-resistant polymer film material and a preparation method thereof. The film material comprises the following components by weight: 40-80 parts of polypropylene, 20-40 parts of modified hollow glass fibers, 1-5 parts of a compatilizer, 0.2-1 part of a lubricant, 0.2-1 part of a heat stabilizer, and 0.2-1 part of a light stabilizer, wherein the modified hollow glass fibers are hollow glass fibers of which the surfaces are loaded with a nucleating agent and a coupling agent, and the mass ratio of the hollow glass fibers to the nucleating agent to the coupling agent is (20-40): (0.4-0.8): (0.4-0.8). The film material has relatively high strength, heat resistance and transparency.

Description

technical field [0001] The invention relates to the technical field of polypropylene composite materials, in particular to a cooking-resistant polymer film material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a semi-crystalline thermoplastic with the advantages of white, odorless, tasteless, non-toxic, low cost, and easy to process. It can be widely used in food packaging, tableware and other food fields. However, polypropylene is a semi-crystalline resin, and the disadvantages of slow crystallization speed, large spherulite size, low strength, poor heat resistance, and low transparency also greatly limit its application. At present, generally adding a nucleating agent can effectively shorten the polypropylene molding cycle, refine the polypropylene grain size and increase the crystallinity. Combining glass fiber as a reinforcing filler can effectively improve the strength and heat resistance of polypropylene, thereby improving the q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/12C08K7/14C08K9/06C08K5/1575C08J5/18
CPCC08J5/18C08J2323/12C08K9/12C08K7/14C08K9/06C08K5/1575C08K2201/003
Inventor 蒋友兵何振梅
Owner HUIZHOU HAOMING SCI & TECH