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A pressurized expansion tank

An expansion tank, pressure-bearing technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of poor heat-sealing welding performance, poor compatibility and limitations of polypropylene and glass fiber, etc.

Active Publication Date: 2019-12-31
RIZHAO DONGDU RUBBER & PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Polypropylene is a plastic material commonly used in auto parts at present. It has the characteristics of rich sources, cheap price, easy processing, good mechanical properties, and low density. However, it also has low low-temperature impact strength and poor high-temperature creep resistance. Poor thermal welding performance and poor material transparency cannot meet the production and use requirements of the expansion tank, so it must be modified to improve its overall performance
[0004] Glass fiber is an inorganic non-metallic material with excellent performance. There are many types. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittleness and poor wear resistance.
At the same time, the compatibility of polypropylene and glass fiber is not very good
[0005] In the current prior art, polypropylene and glass fiber are compounded to improve the comprehensive performance of the material, but the following problems still exist: (1) The wear resistance and mechanical strength of the compounded material are poor, making it The application in automobiles is limited by one; (2) The compatibility of polypropylene and glass fiber is not good, and floating fiber phenomenon often occurs

Method used

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preparation example Construction

[0065] The preparation method of described modified glass fiber is as follows:

[0066] (1) Dissolve 10g of 3-aminopropyltriethoxysilane, 2g of dodecyltrimethoxysilane, and 1g of octadecyltrimethoxysilane in 300mL of absolute ethanol. At ℃, add 100g glass fiber, stir evenly for 2h, and obtain pretreated glass fiber after vacuum drying;

[0067] (2) Take 10g of pretreated glass fibers obtained in step (1), 1.2g of carboxyl-terminated hyperbranched polyester and 100mL of N,N-dimethylformamide, stir at room temperature; react at 60°C After 10 hours, settle in methanol and filter to obtain modified glass fibers.

[0068] The second aspect of the present invention provides a material for manufacturing the body of the expansion tank, the material for manufacturing the body of the expansion tank at least includes,

[0069] (a) PP;

[0070] (b) glass fibers; and

[0071] (c) Modified glass fibers.

[0072] More preferably, the raw materials for the preparation of the expansion ta...

Embodiment 1

[0107] 本发明的实施例1提供了一种用于制造上述膨胀水箱本体的材质,所述膨胀水箱本体的材质,至少包括,

[0108] (a)100份的PP;

[0109] (b)1份的玻璃纤维;以及

[0110] (c)1份的改性玻璃纤维。

[0111] 所述PP为均聚PP、无规共聚PP和嵌段共聚PP的混合,均聚PP、无规共聚PP和嵌段共聚PP之间的重量比为1:3:5。

[0112] 所述的玻璃纤维为短切玻璃纤维,长度为12mm。

[0113] 所述改性玻璃纤维的制备方法如下:

[0114] (1)将10g 3-氨基丙基三乙氧基硅烷、2g十二烷基三甲氧基硅烷、1g十八烷基三甲氧基硅烷溶于300mL无水乙醇中,超声搅拌溶解后,在75℃下,加入100g玻璃纤维,均匀搅拌2h,真空干燥后,得到预处理的玻璃纤维;

[0115] (2)取步骤(1)中得到的10g的预处理的玻璃纤维、1.2g端羧基超支化聚酯以及N,N-二甲基甲酰胺100mL,室温下搅拌均匀后;在60℃下反应10小时后,在甲醇中沉降和过滤,得到改性玻璃纤维。

[0116] 本申请中,各个原料均为市售获得,其中,端羧基超支化聚酯购于武汉超支化树脂科技有限公司。

[0117] 膨胀水箱本体的材质的制备工艺,至少包括以下步骤:

[0118] 在双螺杆挤出机中,将PP从主喂料器中加入到挤出机中,待PP熔融后,然后在将玻璃纤维和改性玻璃纤维从侧喂料器中加入到挤出机中,进行均匀混合,其中,双螺杆挤出机从一区到机头温度依次为:260℃、270℃、275℃、290℃、280℃、280℃、265℃;螺杆转速为40r / min;注射压力60MPa;注塑温度为280℃。

Embodiment 2

[0120] 本发明的实施例2提供了一种用于制造上述膨胀水箱本体的材质,所述膨胀水箱本体的材质,至少包括,

[0121] (a)100份的PP;

[0122] (b)20份的玻璃纤维;以及

[0123] (c)10份的改性玻璃纤维。

[0124] 所述PP为均聚PP、无规共聚PP和嵌段共聚PP的混合,均聚PP、无规共聚PP和嵌段共聚PP之间的重量比为1:3:5。

[0125] 所述的玻璃纤维为短切玻璃纤维,长度为12mm。

[0126] 所述改性玻璃纤维的制备方法如下:

[0127] (1)将10g 3-氨基丙基三乙氧基硅烷、2g十二烷基三甲氧基硅烷、1g十八烷基三甲氧基硅烷溶于300mL无水乙醇中,超声搅拌溶解后,在75℃下,加入100g玻璃纤维,均匀搅拌2h,真空干燥后,得到预处理的玻璃纤维;

[0128] (2)取步骤(1)中得到的10g的预处理的玻璃纤维、1.2g端羧基超支化聚酯以及N,N-二甲基甲酰胺100mL,室温下搅拌均匀后;在60℃下反应10小时后,在甲醇中沉降和过滤,得到改性玻璃纤维。

[0129] 本申请中,各个原料均为市售获得,其中,端羧基超支化聚酯购于武汉超支化树脂科技有限公司。

[0130] 膨胀水箱本体的材质的制备工艺,至少包括以下步骤:

[0131] 在双螺杆挤出机中,将PP从主喂料器中加入到挤出机中,待PP熔融后,然后在将玻璃纤维和改性玻璃纤维从侧喂料器中加入到挤出机中,进行均匀混合,其中,双螺杆挤出机从一区到机头温度依次为:260℃、270℃、275℃、290℃、280℃、280℃、265℃;螺杆转速为40r / min;注射压力60MPa;注塑温度为280℃。

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Abstract

The invention relates to the field of machinery, in particular to a pressure-bearing expansion water tank. The pressure-bearing expansion water tank comprises an expansion water tank body, an an expansion water tank cover body and a flow guide mechanism. The expansion water tank body comprises an expansion water tank upper body and an expansion water tank lower body. The expansion water tank upperbody and the expansion water tank lower body define a cavity. The top of the expansion water tank upper body is provided with a water inlet. The top of the expansion water tank lower body is providedwith a water outlet. The expansion water tank cover body and the expansion water tank upper body are assembled. The flow guide mechanism comprises baffles. The baffles are arranged in the expansion water tank upper body and the expansion water tank lower body correspondingly.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a pressure-bearing expansion tank. Background technique [0002] The expansion tank is a container for adding and compensating liquid in the cooling system. It compensates for the liquid lost in the system during the cooling process, and discharges the gas generated in the system through the pressure relief port to keep the system pressure stable. The working environment requires: Temperature: -40~100℃, pressure: 2.5bar. [0003] Polypropylene is a plastic material commonly used in auto parts at present. It has the characteristics of rich sources, cheap price, easy processing, good mechanical properties, and low density. However, it also has low low-temperature impact strength and poor high-temperature creep resistance. Poor thermal welding performance and poor material transparency cannot meet the production and use requirements of the expansion tank, so it must be modified to improve it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01P11/00F01P11/02C08L23/12C08K13/06C08K9/04C08K7/14C08K3/04
CPCC08K3/041C08K7/14C08K9/04C08K13/06C08K2201/011C08K2201/014F01P11/00F01P11/029C08L23/12
Inventor 徐浩文张守彦徐淑强孙玉光
Owner RIZHAO DONGDU RUBBER & PLASTIC PROD