Novel environment-friendly functional polypropylene and preparation method thereof

A technology for polypropylene and functionalization, which is applied in the field of new environmentally friendly functionalized polypropylene and its preparation, and can solve the problems of increased content of irritating volatiles in modified polypropylene, restrictions on the application of polypropylene materials, strong irritation and volatility, etc. , to achieve the effects of ensuring safety and health, reducing total migration and pungent odor, low volatility and irritation

Active Publication Date: 2021-10-01
SHANTOU SAMMA PLASTIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing graft monomers such as maleic anhydride and glycidyl methacrylate have strong irritation and volatility, which will limit the application of polypropylene materials in food contact products and low VOC products
Moreover, in the existing graft modification process of polypropylene, small molecular additives such as styrene are often added as free radical stabilizers to increase the grafting rate of modified polypropylene, which will further cause irritation in modified polypropylene. Increased volatile matter content
In addition, under the induction of organic peroxides and high-energy radiation, polypropylene is extremely prone to degradation reactions, resulting in a significant reduction in material properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, the preparation method of the novel environmentally friendly functionalized polypropylene comprises the following steps in sequence:

[0023] (1) By weight, the following raw materials are equipped: 99.42% polypropylene (both homopolypropylene), 0.08% organic peroxide (both 2,5-dimethyl-2,5-di(t-butyl peroxy) hexane), o-diallyl bisphenol A diglycidyl ether 0.50%;

[0024] (2) First mix the organic peroxy compound and o-diallyl bisphenol A diglycidyl ether to obtain a mixture A; then mix the mixture A with polypropylene to obtain a mixed material;

[0025] (3) Melt and extrude the mixed material through a twin-screw extruder, and the extruded material strands are cooled and then pelletized to obtain granular new environmentally friendly functional polypropylene.

[0026] The screw aspect ratio of the twin-screw extruder in the above step (3) is 48:1.

[0027] The temperature in the barrel of the twin-screw extruder in the above step (3) is 170-200°C...

Embodiment 2

[0029] In this embodiment, the preparation method of the novel environmentally friendly functionalized polypropylene comprises the following steps in sequence:

[0030] (1) By weight, equipped with the following raw materials: 98.38% polypropylene (both block copolymerized polypropylene), 0.12% organic peroxide (both tert-butyl peroxy-2-ethylhexanoate), o-diallyl bisphenol A diglycidyl ether 1.50%;

[0031] (2) First mix the organic peroxy compound and o-diallyl bisphenol A diglycidyl ether to obtain a mixture A; then mix the mixture A with polypropylene to obtain a mixed material;

[0032] (3) Melt and extrude the mixed material through a twin-screw extruder, and the extruded material strands are cooled and then pelletized to obtain granular new environmentally friendly functional polypropylene.

[0033] The screw aspect ratio of the twin-screw extruder in the above step (3) is 44:1.

[0034] The temperature in the barrel of the twin-screw extruder in the above step (3) is ...

Embodiment 3

[0036] In this embodiment, the preparation method of the novel environmentally friendly functionalized polypropylene comprises the following steps in sequence:

[0037] (1) By weight, the following raw materials are equipped: 97.30% polypropylene (both homopolypropylene), 0.20% organic peroxide (both 2,5-dimethyl-2,5-di(t-butyl peroxy) hexane), o-diallyl bisphenol A diglycidyl ether 2.50%;

[0038] (2) First mix the organic peroxy compound and o-diallyl bisphenol A diglycidyl ether to obtain a mixture A; then mix the mixture A with polypropylene to obtain a mixed material;

[0039] (3) Melting and extruding the mixed material through a twin-screw extruder, and cutting the extruded material into pellets after cooling to obtain a new type of environmentally friendly functional polypropylene in granular form.

[0040] The screw aspect ratio of the twin-screw extruder in the above step (3) is 52:1.

[0041] The temperature in the barrel of the twin-screw extruder in the above st...

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PUM

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Abstract

The invention relates to novel environment-friendly functional polypropylene, which is characterized by being prepared from the following raw materials in percentage by weight: 94.50 to 99.89 percent of polypropylene, 0.01 to 0.50 percent of organic peroxide and 0.10 to 5.00 percent of o-diallyl bisphenol A diglycidyl ether. The invention also provides a preparation method of the novel environment-friendly functional polypropylene. The novel environment-friendly functional polypropylene not only has excellent interface interaction with the inorganic filler, the organic additive and the polar polymer material, but also has extremely low total migration volume and VOC (volatile organic compound) value, so that the novel environment-friendly functional polypropylene has high performance and high safety at the same time.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a novel environmentally friendly functionalized polypropylene and a preparation method thereof. Background technique [0002] Due to the advantages of low density, excellent balance of strength and toughness, chemical corrosion resistance and processability, polypropylene is widely used in the fields of automobile industry, household appliances, electronic products, packaging products and furniture. As a typical non-polar polymer material, polypropylene has very weak interfacial interactions with most inorganic fillers and polar polymers, which greatly limits the modification space of polypropylene. Moreover, polypropylene and metal materials also have very weak adhesion, which limits the application field of polypropylene. At present, the graft modification of polypropylene by inducing maleic anhydride or glycidyl methacrylate by organic peroxide or high-energy radiat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F212/34
CPCC08F255/02C08F212/34
Inventor 李鹏张晓智詹卡斯
Owner SHANTOU SAMMA PLASTIC IND CO LTD
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