ABS chain and miner

1. In fact, this is a kind of technology, which has begun to rise in foreign countries. In China, six degree chain computing introced this technology earlier and used it on the platform, eliminating the supervision of the third-party platform.

2.

Differences:

1. The two instries are different

2. P2P factoring is mainly for the upstream suppliers of the supply chain to transfer the accounts receivable of core enterprises, P2P provides funds, or docking factoring companies

Supply chain ABS is asset securitization, which transforms accounts receivable into securities

the data of enterprise accounts receivable can often directly reflect the proction and sales scale, enterprise benefits, financial status and other information of the enterprise, which is closely related to the development and survival of the enterprise

In recent years, the accounts receivable of various instries in China remain high, which seriously affects the capital turnover of enterprises, and makes the enterprises in the debt chain unable to operate normally, struggling, and even going bankrupt

Therefore, the management of accounts receivable has become a very important issue in business activities

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with the expansion of its own scale, the existing capital flow of P2P online lending platform is no longer enough to support the platform in technology research and development, increasing financial license, online lending system upgrade and other expenses, so they choose to be listed for financing. In the choice of listing channels, the head P2P platform often chooses Hong Kong or overseas listing instead of A-share listing, mainly considering the profit requirements, net profit level and waiting time of domestic listed enterprises

as of December 31, 2017, four Chinese P2P online lending platforms have been listed in the United States: Yiren loan was listed on the New York Stock Exchange in December 2015, and xinerfu, Hechun and paipai loan successively landed on the U.S. stock exchange in 2017

in addition, Lexin, the parent company of orange finance, a P2P online lending platform, was listed on NASDAQ on December 31. According to the judgment of zero one finance and economics, with the continuous maturity of China's Internet financial regulatory environment, more online lending platforms will choose to be listed for financing in the future

3. PP: Polypropylene
is a semi crystalline thermoplastic. It has high impact resistance, strong mechanical properties, resistance to a variety of organic solvents and acid-base corrosion. It is widely used in instry and is one of the common polymer materials. Australian coins are also made of polypropylene

PE: Polyethylene
is one of the most commonly used polymer materials in daily life, which is widely used in the manufacture of plastic bags, plastic films and milk barrels
polyethylene is resistant to a variety of organic solvents and acid-base corrosion, but it is not resistant to antioxidant acids, such as nitric acid. Polyethylene will be oxidized in oxidizing environment
polyethylene can be considered as transparent in the film state, but when the block exists, e to the existence of a large number of crystals in it, there will be strong light scattering and opaque. The degree of crystallization of polyethylene is affected by the number of branches. The more branches, the more difficult it is to crystallize. The melting temperature of polyethylene crystal is also affected by the number of branches, which ranges from 90 ℃ to 130 ℃. The more branches, the lower the melting temperature. Polyethylene single crystals can be prepared by dissolving HDPE in xylene above 130 ℃
structural formula: - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2 - CH2

ABS is a synthetic plastic of acrylonitrile, butadiene and styrene. It is a kind of resin with high strength, good toughness and excellent comprehensive performance. It is widely used as engineering plastics. In instry, polybutadiene latex or styrene butadiene rubber with low styrene content as the main chain is prepared by graft copolymerization with acrylonitrile and styrene. In fact, it is often a mixture of graft polymer containing butadiene and acrylonitrile styrene copolymer San (or as). In recent years, styrene and acrylonitrile were copolymerized first, and then mixed with graft copolymerized ABS resin in different proportions to prepare various ABS resins suitable for different uses. Instrial proction began in the United States in the mid-1950s
instrial proction methods can be divided into two categories: one is the mechanical blending of polybutadiene or styrene butadiene rubber with San resin on roller, or the blending and copolymerization of two kinds of latex; In addition, styrene and acrylonitrile monomers are added to styrene butadiene latex with low content of styrene butadiene or styrene, and then emulsion graft copolymerization is used or mixed with SAN resin in different proportions.
structure, properties and application in ABS resin, rubber particles are dispersed in the continuous phase of San resin. When impacted, the crosslinked rubber particles bear and absorb the energy, so that the stress is dispersed and the crack development is prevented, so as to improve the tear resistance
the purpose of graft copolymerization is to improve the compatibility and adhesion between rubber particle surface and resin phase. This is related to the amount of free San resin and the composition of San resin grafted on the main chain of rubber. The difference of acrylonitrile content between the two resins should not be too large, otherwise the poor compatibility will lead to the cracking of rubber resin interface
ABS resin can be processed into plastics by injection molding, extrusion, vacuum, blow molding and rolling, and can also be processed by mechanical, adhesive, coating and vacuum evaporation. Because of its excellent comprehensive performance and wide application, it is mainly used as engineering materials and household appliances. Because of its good oil resistance, acid resistance, alkali resistance, salt resistance and chemical reagent resistance, it can be used to replace some metals because of its good electroplating performance, good luster, light specific gravity and low price. It can also synthesize many varieties such as self extinguishing type and heat-resistant type to adapt to various uses.

4.

ABS (asset backed securities) is called asset-backed securities. In a narrow sense, ABS usually refers to a financing tool that issues bonds to investors after the assets with predictable and stable cash flow, such as bank loans and enterprise accounts receivable, are packaged into an asset pool

MBS (mortgage backed securities) is called housing mortgage-backed securities. Its essence is the same as ABS, but underlying assets are mortgage loans for housing or commercial real estate. MBS procts account for more than 70% of the US asset securitization market

ABN (asset backed medium term notes) is essentially the same as ABS, but it is a private directional fund-raising from investors with a relatively short term. It has been issued in China

PPN (private publication notes) is a kind of non-public directional debt financing tool, which can only be circulated among a certain range of institutional investors by issuing debt financing tools to specific institutional investors (in fact, it is the agreed financing agreement). It has been issued in China

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asset backed securities are issued by the trustee and represent the beneficial share of the trust for a specific purpose. The trustee shall bear the obligation to pay the income of asset-backed securities to the investment institution to the extent of the trust property. The payment basically comes from the cash flow generated by the asset pool supporting the securities. The assets under this item are usually financial assets, such as loans or credit receivables. According to their terms, payment is regular

the time of principal payment in asset-backed securities often depends on the time of principal recovery. The inherent unpredictability of the time of principal recovery and the corresponding time of principal payment in asset-backed securities is one of the main characteristics of asset-backed securities, which is different from other bonds. Assets that can be used as collateral for asset-backed securities fall into two categories: existing assets or receivables and future assets or receivables. The former is called "securitization of existing assets", while the latter is called "securitization of future cash flow"

5. One or two sentences are not clear. You can search for ABS chain machine directly on the Internet.

6.

The parameters of Fabs are double and the return value is also double. The parameters of

ABS are int and the return value is also int

ABS is to find the absolute value of an integer, while Fabs is to find the absolute value of a real number

1, Fabs

usage: # include & lt; math.h>

function: find the absolute value of floating-point number x

Description: calculate | x |, return x when x is not negative, otherwise return - x

number: ABS

2, ABS

< P > usage: math.abs (number)

function: find the absolute value of number

Description: the return value type of function is the same as the data type of numerical expression

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1 ABS logo words:

format

ABS number

Abs: find the absolute value of the input number

examples

? ABS - 30

results: 30

ABS 30

results: 30

ABS - 3 + - 4

results: 7

2, the application of Fabs

program judgment filtering sampling signal, such as often by random interference sensor instability caused by serious distortion, can use this method. The method is: according to the proction experience, determine the maximum allowable deviation △ of two cross sampling ×, If the subtraction value of two successive sampling signals is greater than △ ×, It indicates that the input is interference signal and should be removed; Use the last sampling value as the current sampling value, if it is less than or equal to △ × It shows that there is no interference and the sampling value is valid. This method is suitable for sampling slowly changing physical parameters, such as temperature, physical location and so on

7.

1、 Different properties

1. Polystyrene Plastics: plastics containing styrene group in polymer chain, including styrene and its copolymer. Specific varieties are common polystyrene (GPPS), high impact polystyrene (HIPS), expandable polystyrene (EPS), metallocene polystyrene (SPS), etc

ABS Plastics: acrylonitrile (a), butadiene (b) and styrene (s) terpolymer. The relative content of the three monomers can be changed arbitrarily to make various resins

(1) mechanical properties: high strength, fatigue resistance, dimensional stability, low creep (small change at high temperature)

(2) heat aging resistance: the enhanced UL temperature index is 120-140 C (long-term outdoor aging is also good)

(3) solvent resistance: no stress cracking

(4) water stability: easy to decompose when meeting water (attention should be paid when using in high temperature and humid environment)

(1) it has good comprehensive properties, high impact strength, chemical stability and electrical properties

(2) it has good fusibility with 372 plexiglass and can be made into two-color plastic parts with surface chrome plating and painting

(3) it has high impact resistance, high heat resistance, flame retardant, reinforced and transparent grade

(4) the fluidity is worse than hips, better than PMMA, PC and so on, and the flexibility is good

(5) it is suitable for manufacturing general mechanical parts, wear-resistant parts, transmission parts and communication parts

Different uses the biggest application fields of ABS resin are automobile, electronics and building materials. Automotive applications include dashboard, body outer panel, interior panel, steering wheel, soundproof panel, door lock, bumper, ventilation pipe and other components, which are widely used in refrigerator, TV, washing machine, air conditioner, computer and other instries, copier and other electronic equipment

PS is widely used in optical instry because of its good light transmittance. It can be used to manufacture optical glass and optical instruments, as well as transparent or colorful optical glass and optical instruments, such as lampshade, lighting appliances, etc. PS can also make many electrical components and instruments work in high frequency environment. As PS plastic is a hard inert surface material, it needs professional PS adhesive in instry

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there are many ways to distinguish PS and ABS

there are many ways to distinguish ABS and PS. as far as ABS is concerned, its surface brightness is better than PS, its toughness is better than PS, there will be dense holes on the surface after combustion, and its taste is sweet

PS is divided into GPPS, hips and EPS. There are more crisp and transparent procts. The hip is generally brighter and more resilient than the abdominal muscles. After burning, the surface is bright and has the smell of styrene

the hips are white, but GPPS is not. EPS is mainly used for foaming

for TV shell materials, there are ABS and hips, which are generally distinguished according to surface characteristics and physical characteristics

Generally, ABS has good surface finish. When broken with pliers, ABS is better than hips, with high hardness and strength. And then it's based on the flame and the taste

8.

Tensile strength: 166 ~ 610 (10 ^-2 / kPa)

flexural strength: 248 ~ 930 (10 ^-2 / kPa)

flexural strength: 248 ~ 930 (10 ^-2 / kPa)

< P >

impact strength: 5.3 ~ 53 (10 ^-1 / J * J * M-1 / J * J * m-1)

tensile molus: 166 ~ 166 ~ 166 ~ 166 ~ 166 ~ 166 ~ 166 ~ 166 (10 ^-4 / kPa)

flexural molus: 296 (* 10 ^-4 / kPa))

nylon 66: <

< P > nylon 66: <

<

strong impact Degree: 5.3 ~ 15.9 (* 10 ^ - 1 / J * m-1)

tensile molus: 314 ~ 324 (* 10 ^ - 4 / kPa)

bending molus: 287 ~ 294 (* 10 ^ - 4 / kPa)

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ABS plastic properties:

most ABS are non-toxic and impermeable, but slightly permeable to steam, with low water absorption, water absorption less than 1% after soaking in water at room temperature for one year, and no change in physical properties. The surface of ABS resin procts can be polished to get high gloss procts. It is 3-5 times stronger than ordinary plastics

Plastic ABS resin is the most widely used polymer with the largest output. It organically integrates various properties of Pb, pan and PS, and has excellent mechanical properties of toughness, hardness and rigid phase balance. ABS is a terpolymer of acrylonitrile, butadiene and styrene. A represents acrylonitrile, B represents butadiene and s represents styrene. After practical use, it is found that ABS plastic pipe is not resistant to sulfuric acid corrosion, and it will break when it meets sulfuric acid

purpose:

polyamide plastic procts are widely used in various mechanical and electrical parts, including bearing, gear, pulley pump impeller, blade, high pressure sealing ring, gasket, valve seat, bushing, oil pipe, oil reservoir, rope, drive belt, grinding wheel adhesive, battery box, electrical coil, cable joint, etc

main varieties of nylon:

include aliphatic polyamide, aliphatic aromatic polyamide and aromatic polyamide. Aliphatic polyamides have many varieties, large output and wide application. They can be used as both fiber and plastic. Polyamide fiber, also known as nylon, has a yield ratio of 9:1 to polyamide plastic

there were few varieties of aliphatic aromatic polyamide, and the yield was also small. Aromatic polyamide is often referred to as polyarylamide, mainly used as fiber, the latter is called aromatic polyamide fiber, commonly known as aramid fiber. The name of polyamide is usually characterized by the number of carbon atoms in the unit chain in instry. It can be generally divided into p-type and MP type according to the polymer monomer

9.

Differences:

1, different functions

the outstanding point of ABS is that the surface can be electroplated, vacuum coated, printed, painted and painted.

PC is the best impact resistant plastic variety, but the disadvantages are that the procts are easy to crack, low fatigue strength

2, different materials

PC is an engineering plastic with high price, but it has the advantages of transparency, high impact resistance, high temperature resistance and high dimensional accuracy, But it also has the weakness of forming difficulty and strong internal stress. Mainly used in home appliances lighting instry

ABS is a common plastic, which has the characteristics of easy molding and post-processing. Mainly used for shell procts

Different advantages

PC has good transparency, excellent comprehensive performance, high mechanical strength, good toughness, good heat and weather resistance, high dimensional stability, easy coloring and low water absorption

ABS has high mechanical strength and good comprehensive properties of "hardness, toughness and steel". ABS is easy to absorb moisture, low shrinkage (0.60%), stable in size, easy to process and widely used

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ABC plastic performance details:

1. Material performance

comprehensive performance is better, impact strength is higher, chemical stability and electrical performance are good

It can be made into two-color plastic parts, and the surface can be plated with chromium and sprayed with paint

with high impact resistance, high heat resistance, flame retardant, reinforced, transparent and other levels

the fluidity is a little worse than hips, better than PMMA and PC, and the flexibility is good

It is suitable for making general mechanical parts, wear-resistant parts, transmission parts and telecommunication parts

2, molding performance

amorphous material, medium fluidity, high moisture absorption, must be fully dried, the surface of the plastic parts required gloss must be preheated for a long time, dried at 80-90 degrees, 3 hours

It is better to choose high material temperature and high mold temperature, but it is easy to decompose when the material temperature is too high (decomposition temperature is & gt; 270℃) For high precision plastic parts, the mold temperature should be 50-60 ℃, for high gloss, heat-resistant plastic parts, the mold temperature should be 60-80 ℃

In order to solve the problem of water inclusion, the fluidity of the material should be improved, high material temperature and mold temperature should be adopted, or the water level should be changed

If heat-resistant or flame-retardant materials are formed, plastic decomposition procts will remain on the surface of the mold after 3-7 days of proction, which will cause the surface of the mold to be bright. It is necessary to clean the mold in time and increase the exhaust position on the surface of the mold