Low floating fiber high gloss glass fiber reinforced polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of composite materials and their preparation, can solve the problems of not too much glass fiber content, poor appearance of parts, obvious floating fiber problems, etc., and achieve good dimensional stability and improve gloss. , Improve the effect of surface gloss

Inactive Publication Date: 2016-04-13
SHANGHAI SUNNY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent document CN103265761A discloses a low-floating fiber-reinforced polypropylene material prepared by modifying the surface of polypropylene with a low-molecular polar substance, maleic anhydride, etc., and an initiator. However, although the material has greater mechanical properties improved, but the floating fiber problem is still obvious
[0004] The above technologies improve the compatibility of polymer materials such as polypropylene and glass fibers by processing glass fibers or adding compatibilizers; the disadvantage is that the content of glass fibers added should not be too much, otherwise the exposure of floating fibers will still be serious, and the processing performance will be poor. Poor, resulting in poor appearance of the part
The problem of floating fibers on the surface of the product can be improved by adding calcium sulfate whiskers to partially replace glass fibers and elastomers. The current application in polypropylene has not been involved

Method used

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  • Low floating fiber high gloss glass fiber reinforced polypropylene composite material and preparation method thereof
  • Low floating fiber high gloss glass fiber reinforced polypropylene composite material and preparation method thereof
  • Low floating fiber high gloss glass fiber reinforced polypropylene composite material and preparation method thereof

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Embodiment 1～6

[0031] Embodiments 1 to 6 relate to the present invention and also relate to the aforementioned low-floating fiber high-gloss glass fiber reinforced polypropylene composite material and a preparation method thereof; the method includes the following steps:

[0032] Step 1, weigh each component according to the ratio in Table 1:

[0033] Table 1

[0034] Unit:kg

[0035]

[0036] in FIG. 1:

Embodiment 1

[0037] In Example 1: the polypropylene is atactic polypropylene, the polypropylene has a mass melt flow rate of 2.0 to 50.0 g / 10 min at a temperature of 230° C. and a load of 21.17 N, and the tensile strength is ≥ 20 MPa;

[0038] The polyethylene is high-density polyethylene, and the polyethylene has a mass melt flow rate of 10.0-40.0g / 10min and a tensile strength of ≥15Mpa under the conditions of a temperature of 230°C and a load of 21.17N;

[0039] The glass fiber is alkali-free glass fiber, and its fiber diameter is 8-20 μm;

[0040] The particle size of calcium sulfate whiskers is 3-15 μm;

[0041] The elastomer is polybutadiene rubber;

[0042] The compatibilizer is polypropylene grafted acrylic acid;

[0043] The initiator is tert-butyl peroxyacetate;

[0044] The antioxidant is a hindered phenolic antioxidant;

[0045] Other additives are heat stabilizers.

Embodiment 2

[0046] In Example 2: the polypropylene is isotactic polypropylene, the polypropylene has a mass melt flow rate of 2.0 to 50.0 g / 10 min at a temperature of 230° C. and a load of 21.17 N, and the tensile strength is ≥ 20 Mpa;

[0047] The polyethylene is low-density polyethylene, and the polyethylene has a mass melt flow rate of 10.0-40.0g / 10min and a tensile strength of ≥15Mpa under the conditions of a temperature of 230°C and a load of 21.17N;

[0048] The glass fiber is alkali-free glass fiber, and its fiber diameter is 8-20 μm;

[0049] The particle size of calcium sulfate whiskers is 3-15 μm;

[0050] The elastomer is styrene-butadiene rubber;

[0051] The compatibilizer is polypropylene grafted maleic acid;

[0052] Initiator is dicumyl peroxide;

[0053] The antioxidant is a hindered phenolic antioxidant;

[0054] Other additives are lubricants;

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Abstract

The invention provides a low-revealed high-gloss glass fiber reinforced polypropylene composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 30-80 parts of polypropylene, 10-20 parts of polyethylene, 10-20 parts of calcium sulfate whiskers, 0-40 parts of glass fibers, 3-12 parts of an elastomer, 3-8 parts of a compatilizer, 0.2-1 part of an antioxidant and 0.2-2.0 parts of other aids, wherein the particle size of the calcium sulfate whiskers is 3-15 microns, and the elastomer is one or a mixture of two of a thermoplastic elastomer and a thermosetting elastomer. The invention further relates to the preparation method of the composite material. According to the composite material, the glass fibers are partially replaced with the calcium sulfate whiskers, so that the inherent strength of the composite material is kept, the usage amount of the glass fibers is reduced, revealed fibers are reduced, and the surface gloss of the material is improved.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a low floating fiber high gloss glass fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] As one of the five general-purpose plastics, polypropylene PP has the advantages of low density, low production cost, good comprehensive mechanical properties, non-toxicity, corrosion resistance, easy processing and recycling, etc., and is widely used in various places, such as household appliances, automobile interior and exterior decoration Parts, fitness equipment, office supplies, daily necessities, toys and sanitary ware, etc., occupy an important position in plastics, but when making home appliance parts, its strength, stiffness, impact resistance and often fail to meet the requirements, and the surface gloss of the product Poor density and severe floating fibers also limit the application of polypropy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/06C08L23/08C08K13/04C08K7/14C08K7/08B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08K2201/003C08L23/12C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L2207/12C08L2207/14C08L23/06C08L9/00C08K13/04C08K7/14C08K7/08C08L9/06C08L23/0815B29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29B9/14B29C48/04B29C48/40B29C48/875B29C48/911B29C2948/92514B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 沈叶龙娄小安孟成铭裘浩成路海冰
Owner SHANGHAI SUNNY
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