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High-rigidity low-warpage glass fiber reinforced polypropylene material

A polypropylene material, low warpage technology, applied in the field of polymer materials, can solve problems such as poor cold resistance, achieve the effect of reducing post-shrinkage and improving warpage deformation

Inactive Publication Date: 2014-04-23
SICHUAN GLARY ASIA PLASTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The embrittlement temperature is -35°C, embrittlement will occur below -35°C, and its cold resistance is not as good as that of polyethylene

Method used

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  • High-rigidity low-warpage glass fiber reinforced polypropylene material
  • High-rigidity low-warpage glass fiber reinforced polypropylene material
  • High-rigidity low-warpage glass fiber reinforced polypropylene material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In parts by weight, the components of the raw materials of the high rigidity and low warpage glass fiber reinforced polypropylene material in this embodiment are shown in Table 1.

[0029] Table 1:

[0030]

[0031] .

[0032] The samples obtained in this embodiment were tested for notched Izod impact strength according to ASTM D256-2010, ASTM D790 for flexural modulus, and ASTM D638 for tensile strength. Inject the material described in the invention into a storage box with a length of 300mm, a width of 200mm, a height of 50mm, and a thickness of 4mm. After standing at room temperature for a week, visually inspect the warping and deformation of the lid / bottom junction. The test results are shown in Table 7.

Embodiment 2

[0034] In parts by weight, the components of the raw materials of the high rigidity and low warpage glass fiber reinforced polypropylene material in this embodiment are shown in Table 2.

[0035] Table 2:

[0036]

[0037] .

[0038] The samples obtained in this embodiment were tested for notched Izod impact strength according to ASTM D256-2010, ASTM D790 for flexural modulus, and ASTM D638 for tensile strength. Inject the material described in the invention into a storage box with a length of 300mm, a width of 200mm, a height of 50mm, and a thickness of 4mm. After standing at room temperature for a week, visually inspect the warping and deformation of the lid / bottom junction. The test results are shown in Table 7.

Embodiment 3

[0040] In parts by weight, the components of the raw materials of the high rigidity and low warpage glass fiber reinforced polypropylene material in this embodiment are shown in Table 3.

[0041] table 3:

[0042]

[0043] .

[0044] The samples obtained in this embodiment were tested for notched Izod impact strength according to ASTM D256-2010, ASTM D790 for flexural modulus, and ASTM D638 for tensile strength. Inject the material described in the invention into a storage box with a length of 300mm, a width of 200mm, a height of 50mm, and a thickness of 4mm. After standing at room temperature for a week, visually inspect the warping and deformation of the lid / bottom junction. The test results are shown in Table 7.

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Abstract

The invention discloses a high-rigidity low-warpage glass fiber reinforced polypropylene material comprising the raw materials in parts by weight: polypropylene, short-cut glass fiber, a glass fiber powder, an inorganic filling material, a compatibilizer, a flexibilizer and an antioxidant. The related high-rigidity low-warpage glass fiber reinforced polypropylene material is compared with a reinforced polypropylene material prepared by a traditional technology, in the material injection molding process, the glass fiber orientation is significantly reduced, and the post-contraction of a product is also reduced significantly in the use process; and in the reinforced polypropylene material prepared by the traditional technology, warping and deformation phenomena generated during injection molding of large long-flow pieces are obviously improved, and the product has the characteristics of high rigidity, high heat resistance, low warpage and the like.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a glass fiber reinforced polypropylene material with high rigidity and low warpage. Background technique [0002] Polypropylene is a general-purpose synthetic resin. It is a non-toxic, odorless, and tasteless milky white high-crystallization polymer with a density of only 0.9-0.91 g / cubic centimeter. It is one of the lightest types of plastics at present. Its water absorption rate in water is only 0.01%, and it is easy to form and process, but its shrinkage rate is relatively large (1% to 2.5%), and thick-walled products are easy to sag due to shrinkage. In other words, it is difficult to meet its accuracy requirements. [0003] Polypropylene has high crystallinity and regular structure, so it has excellent mechanical properties, but it is still a relatively low variety in plastic materials, and its tensile strength can only reach 30MPa or a slightly higher level. Polypropylene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/06C08K7/14C08K7/20C08K3/30C08K3/26C08K5/134C08K5/526
CPCC08L23/12C08K2201/003C08K2201/004C08K2201/014C08L2205/03
Inventor 苟凯谭江梅
Owner SICHUAN GLARY ASIA PLASTIC TECH
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