A kind of low-voc polypropylene material and its preparation method and application

A polypropylene material and polypropylene technology, applied in the field of modified polypropylene material, low-VOC, low-acetaldehyde polypropylene material and its preparation, can solve problems such as no solution, and achieve the effect of reducing acetaldehyde content

Active Publication Date: 2017-07-14
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on low-VOC automotive polypropylene materials mainly focuses on solutions from different angles for the first point, and does not involve solutions for the second point

Method used

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  • A kind of low-voc polypropylene material and its preparation method and application
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  • A kind of low-voc polypropylene material and its preparation method and application

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Embodiment 1

[0046] A kind of low-VOC polypropylene material, its raw material formula is shown in Table 1, and its preparation method comprises the following steps:

[0047] Add polypropylene, elastomer and dispersant to a low-speed mixer and mix evenly, with a rotation speed of ≤80r / min; then add mineral fillers, lubricants, acid absorbers, antioxidants, and weather-resistant agents for mixing, and finally add molecular sieves. After mixing evenly, add it from the main feeding port of the twin-screw extruder, carry out melt blending, vacuum extrude through the extruder, dry, granulate and classify with the granulator to obtain the low-VOC polypropylene material.

[0048] The aspect ratio of the twin-screw extruder is 48:1, and the temperature of the melting section of the twin-screw extruder is 180°C.

[0049] Among them, the polypropylene used is homopolypropylene, the elastomer is ethylene-butylene copolymer, the dispersant is acetone, the mineral filler is talcum powder, the lubricant...

Embodiment 2

[0051] A kind of low-VOC polypropylene material, its raw material formula is shown in Table 1, and its preparation method is with embodiment 1;

[0052] The aspect ratio of the twin-screw extruder is 48:1, and the temperature of the melting section of the twin-screw extruder is 210°C.

[0053] Among them, the polypropylene used is copolymerized polypropylene, the elastomer is ethylene-hexene copolymer, the dispersant is purified water, the mineral filler is talcum powder, the lubricant is C22 unsaturated aliphatic amide, and the acid absorber is stearic acid A compound of zinc and magnesium oxide in a mass ratio of 1:2, and the antioxidants are hindered phenolic antioxidants (antioxidant 3114) and phosphite antioxidants (antioxidant 168) at a ratio of 1:1 The mass ratio composition, the weather resistance agent is a hindered amine light stabilizer (Chimassorb 944); the molecular sieve is a hydrophobic zeolite molecular sieve with a pore size of 0.2-1 nanometer.

Embodiment 3

[0055] A kind of low-VOC polypropylene material, its raw material formula is shown in Table 1, and its preparation method is with embodiment 1;

[0056] The aspect ratio of the twin-screw extruder is 52:1, and the temperature of the melting section of the twin-screw extruder is 230°C.

[0057] Among them, the polypropylene used is homopolypropylene, the elastomer is ethylene-octene copolymer, the dispersant is a mixture of acetone and purified water at a mass ratio of 1:1, the mineral filler is talcum powder, and the lubricant is C25. Saturated aliphatic amide, the acid absorbing agent is a compound of zinc stearate and zinc oxide at a mass ratio of 1:3, the antioxidant is hindered phenolic antioxidant (antioxidant 1076), phosphite antioxidant The oxygen agent (antioxidant 626) is composed at a mass ratio of 1:1, and the weather resistance agent is a hindered amine light stabilizer (Tinuvin 770); the molecular sieve is a hydrophobic zeolite molecular sieve with a pore size of ...

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Abstract

The invention relates to a low-VOC (volatile organic compound) polypropylene material as well as a preparation method and an application thereof. The polypropylene material is prepared from raw materials in percentage by weight as follows: 15-95% of polypropylene, 0-25% of an elastomer, 5-50% of mineral filler, 0.1-2% of a dispersing agent, 0.05-1% of a lubricant, 0.05-1% of an acid acceptor, 0.1-2% of an antioxidant, 0.1-1% of a weather resistance agent and 0.2-2% of a molecular sieve, wherein the acid acceptor is a compound of stearate and a metal oxide, and the dispersing agent is purified water, acetone or a mixture of the purified water and the acetone. The prepared low-VOC polypropylene material has the characteristics of low VOC and low acetaldehyde, does not produce acetaldehyde during injection molding, can be applied to injection molding of automotive interior parts and can meet the VOC requirement.

Description

technical field [0001] The invention belongs to the field of modified plastics, and specifically relates to a modified polypropylene material, in particular to a low-VOC and low-acetaldehyde polypropylene material suitable for manufacturing automotive interior parts, and a preparation method and application thereof. Background technique [0002] Since GB / T 27630 "Guidelines for Evaluation of Air Quality in Passenger Cars" was implemented on March 1, 2012, major domestic automobile manufacturers and raw material manufacturers have invested a lot of financial resources and energy in research, and good results have been achieved so far . [0003] Patent CN102731901A discloses a low-VOC polypropylene composite material for vehicles and its preparation method. By adding fully vulcanized powdered silicone rubber, volatile organic compounds can be extracted faster and better during the vacuuming process, which is a good solution The residual problem of volatile organic compounds i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L53/00C08L23/16C08L23/08C08K13/02C08K3/34C08K3/36C08K5/20C08K5/098
CPCC08K2201/014C08L23/12C08L23/14C08L2205/02C08L23/0815C08K13/02C08K3/346C08K5/20C08K5/098C08K2003/2296C08K2003/222C08L53/00
Inventor 张春怀杨波丁超罗忠富李欣
Owner TIANJIN KINGFA NEW MATERIAL
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