Low-density high-strength reinforced rubber sheet convenient for low-temperature construction and preparation method thereof

A reinforcing film and low-density technology, applied in the direction of adhesives, epoxy resin glue, film/sheet adhesive, etc., can solve the problem of inability to obtain high expansion ratio reinforcing film, large initial viscosity of the matrix, and reinforcing effect Poor and other problems, to achieve the effect of reducing epoxy dispersion force, low density, and good construction effect

Active Publication Date: 2015-10-07
北京龙苑伟业新材料有限公司
View PDF7 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese Patent Publication CN1433453A describes a reinforced film with an improved oil-impregnated metal surface, which has an adhesive layer comprising an epoxy-terminated addition of epoxy resin to rubber containing a small amount of nitrile monomer Compound, the reinforcement effect of the reinforced film is not good

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-density high-strength reinforced rubber sheet convenient for low-temperature construction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The embodiment of the present invention also provides a method for preparing a low-density, high-strength reinforcing film that is convenient for low-temperature construction, which is used to prepare the above-mentioned reinforcing film, including the following steps:

[0030] Take each raw material and glass fiber reinforced layer according to the adhesive layer formula of the above-mentioned reinforced film;

[0031] 1) After mixing the solid epoxy resin and non-polar rubber in the raw materials, knead in a pressurized kneader for 5 to 10 minutes;

[0032] 2) After preparing the remaining raw materials in the raw materials, gradually add 50% of the total weight into the pressurized kneader, and knead in the pressurized kneader for 5 to 10 minutes , after all raw materials are added and mixed uniformly, an adhesive layer matrix composition is obtained;

[0033] 3) Extrude the adhesive layer matrix composition prepared above into a film with a thickness of 0.8-1.0mm t...

Embodiment 1

[0044] This embodiment provides a low-density, high-strength reinforcing film with good low-temperature construction. The preparation method of the reinforcing film is as follows:

[0045] Preparation of the adhesive layer: Add BR900018 parts of butadiene rubber and 50 parts of solid epoxy resin E2050 into a pressurized kneader and knead for 10 minutes; mix 18 parts of liquid polybutadiene (1,2-LPB), foaming agent After 9 parts of A50009, 4 parts of dicyandiamide, 0.8 part of bis-tert-butylperoxycumene PIPB and 9 parts of spray carbon black are prepared, gradually add the pressurized kneader, adding 50% of the total weight each time, Knead for 8 minutes after each addition; add all the raw materials and mix them evenly to obtain the adhesive layer matrix composition, and use a rubber extruder to extrude the adhesive layer matrix composition into a width of 300mm, a thickness of 0.8mm, and a length of 1m. layer to use;

[0046] The glass fiber cloth base material is 7667 glass...

Embodiment 2

[0048] The adhesive layer of the reinforcing film provided in this example is the same as in Example 1, and the glass fiber cloth is 0.4 mm thick impregnated glass fiber cloth from Shandong Sanhe Fiber Industry Co., Ltd., and its preparation method is the same as in Example 1. As Example 2 sample.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a low-density high-strength reinforced rubber sheet convenient for low-temperature construction and a preparation method thereof. The reinforced rubber sheet is compounded from an adhesive layer and a glass fiber reinforcement layer. The adhesive layer is composed of the following raw materials in percentage by mass: 40-60% of solid epoxy resin, 15-20% of non-polar rubber, 15-20% of liquid rubber, 3-6% of epoxy resin curing agent, 0.5-1% of rubber vulcanizing agent, 5-10% of foaming agent and 5-10% of thixotropic agent. The adhesive layer of the reinforced rubber sheet adopts the non-polar rubber with favorable compatibility with the oil surface and the liquid rubber with favorable low-temperature viscosity ratio to lower the epoxy dispersion force, so that the reinforced rubber sheet can be constructed on a steel plate at low temperature, thereby ensuring the bonding effect. The solid epoxy resin is creatively adopted, thereby avoiding the problems of incapability of forming due to excessive liquid epoxy resin, poor oil surface construction, and poor reinforcing effect due to phase separation and precipitation in the system in the adhesive layer composition on the premise of satisfying that the epoxy resin consumption ensures the reinforcing effect.

Description

technical field [0001] The invention relates to the field of reinforcing films for thin steel plates of automobile bodies, in particular to a low-density, high-strength reinforcing film which is convenient for low-temperature construction and a preparation method thereof. Background technique [0002] In the modern automobile industry, the automobile body uses thinner steel plates to reduce the weight of the vehicle and achieve lightweight, which is one of the important means to save energy and reduce pollution. However, the thinning of the steel plate will bring some negative effects: the local stiffness of the outer body panel will decrease, and large-area sheet metal parts such as the door, top cover, and side wall will easily vibrate and generate noise during the driving process of the car, which will affect the NVH performance of the whole vehicle . In order to solve the above-mentioned drawbacks, one of the measures taken by the automobile industry is to apply a reinf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09J7/04C09J163/00C09J109/00C09J109/06C09J123/16
Inventor 聂志华张晓光雷文民秦成博
Owner 北京龙苑伟业新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap