High-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material and preparation method thereof
A technology of composite material and polypropylene, which is applied in the field of high-impact and low-temperature-resistant glass fiber reinforced polypropylene composite materials and its preparation, can solve the problems of poor mechanical properties and low-temperature impact resistance, so as to improve impact resistance and structure Defects, the effect of increasing the cooling crystallization rate
Inactive Publication Date: 2015-09-30
中广核俊尔(上海)新材料有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide an improved high-impact and low-temperature-resistant glass fiber reinforced polypropylene composite material and its preparation method, which can overcome some shortcomings of the prior art in mechanical properties, especially poor low-temperature impact resistance
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] According to the data in Example 1 in Table 1, weigh β-type nucleating agent-1, β-type nucleating agent-2, whisker-1, and whisker-2, stir and mix evenly, and then the composite nucleating agent can be prepared Agent-1.
Embodiment 2
[0038] According to the data in Example 2 in Table 1, weigh β-type nucleating agent-1, β-type nucleating agent-2, whisker-1, and whisker-2, stir and mix evenly, and then a composite nucleating agent can be prepared Agent-2.
Embodiment 3
[0040] According to the data in Example 3 in Table 1, weigh β-type nucleating agent-1, β-type nucleating agent-2, whisker-1, and whisker-2, stir and mix evenly, and then a composite nucleating agent can be prepared Agent-3.
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The invention relates to a high-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material and a preparation method thereof. The invention is characterized in that the high-impact-resistance low-temperature-resistant glass-fiber-reinforced polypropylene composite material is prepared from the following raw materials in percentage by weight: 50-80% of polypropylene, 2-15% of graft compatilizer, 10-30% of glass fiber chopped felt, 3-10% of elastomer toughener and 0.5-10% of compound crystal nucleator. In order to solve the problem of poor low-temperature toughening effect in the traditional elastomer, nucleators and auxiliary nucleators for different crystal forms are compounded to regulate the crystal structure and content of the base phase and interface phase in the polypropylene composite material, thereby improving the normal-temperature / low-temperature impact property (especially notch impact property at the low temperature of lower than -30 DEG C) of the reinforced polypropylene composite material on the premise of avoiding over reduction of the rigidity of the composite material. The performance testing indicates that the retentivity of the normal-temperature stretching and bending strength of the modified composite material is 90% above, the low-temperature (-40 DEG C) notch strength can be enhanced by 80-120%, and the comprehensive properties are obviously better than those of the conventional elastomer toughened modified material.
Description
technical field [0001] The invention relates to the technical field of polymer materials, in particular to a glass fiber reinforced polypropylene composite material with high impact resistance and low temperature resistance and a preparation method thereof. Background technique [0002] Polypropylene is one of the most widely used general-purpose plastics at present. It has relatively balanced comprehensive properties, excellent chemical resistance, good processing fluidity and relatively low price, so it can be used in industrial fields such as automobiles, electrical appliances, and building materials. Used a lot. However, the defects in the structure and performance of polypropylene are also very obvious. Due to the existence and regular distribution of side chain methyl groups in the molecular chain, the polymer molecular chains are easy to stack in a direction, and the material has a strong tendency to crystallize, but the crystallization process is slow and the crystal...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C08L23/14C08L51/06C08L23/08C08K5/18C08K5/098C08K7/08C08K7/02C08K7/14
CPCC08L23/14C08K2201/003C08K2201/004C08K2201/016C08L2205/03C08L2205/24C08L2207/10C08L51/06C08L23/0815C08K5/18C08K7/08C08K7/14C08K5/098C08K7/02
Inventor 郑云龙黄志杰杨仓先
Owner 中广核俊尔(上海)新材料有限公司