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Polypropylene composite material with low emission and excellent weather resistance and preparation method thereof

A composite material and polypropylene technology, which is applied in the field of polypropylene composite materials with low emission and excellent weather resistance and its preparation, can solve the problem of long contact time between eluent and polypropylene composite materials, which affects the mechanical properties and weather resistance of finished products , water or jellyfish pellets are difficult to add, to achieve the possible effects of easy implementation and operation, overcoming the shortcomings of adsorption balance, and reducing degradation

Active Publication Date: 2015-12-30
CGN JUNER NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are two disadvantages with this method: first, the difficulty of adding water or jellyfish particles is too high, and the amount of addition is too low
Due to the low boiling point of small molecule eluents such as water, it is easy to cause leakage when adding through the main feed or side feed, making feeding difficult, and the amount of addition is limited, and the maximum amount of addition is difficult to exceed 5 parts by weight
Second, adding small molecule elution from the main feed or side feed will cause the eluent to contact with the polypropylene composite for too long, and some eluents may be harmful to the substrate or additives especially Antioxidants and light stabilizers cause degradation, affecting the mechanical properties and weatherability of the final product

Method used

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  • Polypropylene composite material with low emission and excellent weather resistance and preparation method thereof
  • Polypropylene composite material with low emission and excellent weather resistance and preparation method thereof
  • Polypropylene composite material with low emission and excellent weather resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 68.5 parts by weight of polypropylene BJ368MO, 10 parts by weight of POE (8150), 20 parts by weight of 10000 mesh talcum powder, 0.2 parts by weight of antioxidant 1010, 0.2 parts by weight of antioxidant 168, 0.1 parts by weight of light stabilizer and 1 part by weight of Carbon black was added into a high-speed mixer with a rotation speed of 1000rpm and mixed for 5 minutes to obtain a mixture, and then the mixture was added to a twin-screw extruder from the feed port for melt blending. The aspect ratio of the twin-screw extruder was 52: 1. The twin-screw extruder includes 11 heating working areas connected in sequence. The temperature of the 11 heating working areas of the twin-screw extruder from the feeding port to the extrusion granulation is: 195 ° C ~ 200 ° C, 195 ° C ~ 200℃, 200℃~205℃, 200℃~205℃, 205℃~210℃, 205℃~210℃, 205℃~210℃, 210℃~215℃, 205℃~210℃, 205℃~210℃ , 200 ℃ ~ 205 ℃, two high-power vacuum pumps are installed in the 5th heating work area and the 8th hea...

Embodiment 2

[0041] The amount of water injected into the seventh heating working area was changed from 8 parts by mass to 10 parts by mass, and the other formulations and steps were the same as in Example 1 to obtain a polypropylene composite material with low emission and excellent weather resistance.

Embodiment 3

[0043] The amount of water injected into the 7th heating working area is changed from 8 parts by mass to 12 parts by mass, and other formulas and steps are the same as in Example 1.

[0044] The polypropylene composite materials prepared in Comparative Examples 1-3 and the polypropylene composite materials prepared in Examples 1-3 with low emission and excellent weather resistance were injected into standard specimens, and their mechanical properties and weather resistance were tested. The results are shown in the table 1.

[0045] Table 1 The mechanical and weather resistance properties of imported materials

[0046]

[0047]

[0048] It can be seen from Table 1 that using the method of the present invention to carry out air stripping treatment on PP, when the water injection amount is greater than 8 parts by mass, the TVOC value of the material system can be effectively reduced, and the TVOC value is ≤ 20UgC / g. With the further increase of the water injection volume, ...

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Abstract

The invention discloses a polypropylene composite material with low emission and excellent weather resistance and a preparation method thereof. The polypropylene composite material is prepared from 40%-90% of polypropylene, 5%-15% of flexibilizer, 18%-40% of mineral fillers, 7%-13% of water, 0.1%-3% of antioxidants, 0.02%-2% of light stabilizers and 0-3% of colorants. The method comprises the steps that the polypropylene, the flexibilizer, the mineral fillers, the antioxidants, the light stabilizers and the colorants are mixed, then the mixture is added to a double-screw extruder for melt blending, the vacuum degree of a sixth heating working area and a seventh heating working area is controlled to be over minus 0.05 MPa, the water is fed into the seventh heating working area of the double-screw extruder, vacuum extrusion granulation is conducted through the double-screw extruder, and the polypropylene composite material is obtained. According to the polypropylene composite material with the low emission and the excellent weather resistance and the preparation method thereof, the production technology is simple, the cost is low, the obtained polypropylene composite material can meet the requirements of automobile set machine factories at home and abroad, and a wide application prospect is achieved.

Description

technical field [0001] The invention relates to the field of polypropylene composite materials, in particular to a polypropylene composite material with low emission and excellent weather resistance and a preparation method thereof. Background technique [0002] Polypropylene has always been concerned by the automobile industry and the plastics industry because of its advantages such as low density, high strength, high hardness, wear resistance, bending fatigue resistance, high heat resistance, excellent moisture resistance and chemical resistance, easy processing and molding, and low price. focus. In order to meet the requirements of automobile standards, polypropylene composite materials are often added with inorganic fillers, elastomers, antioxidants, scratch-resistant agents and other substances. These materials generate volatile substances during processing. [0003] In the current prior art, the addition of an adsorbent or a devolatilization process is generally used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/12C08L53/00C08L23/16C08L23/08C08K13/02C08K3/34C08K3/26C08K3/30C08K3/18C08K5/134C08K5/526B29B9/00B29C47/92B29C48/92
CPCB29B9/00B29C48/92B29C2948/92704C08K2201/003C08L23/10C08L23/14C08L2201/08C08L23/0815C08K13/02C08K3/34C08K5/1345C08K5/526C08K3/04C08K3/18
Inventor 孙心克李俊郑京连安孝善陈玉莹沈岳新黄志杰
Owner CGN JUNER NEW MATERIALS
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